[layerindex-web,4/4] Chart.js: upgrade from 2.9.3 to 2.9.4

Message ID	20231017005921.2618459-5-tim.orling@konsulko.com
State	New
Headers	show Return-Path: <ticotimo@gmail.com> ip: 209.85.214.178, mailfrom: ticotimo@gmail.com) From: Tim Orling <ticotimo@gmail.com> To: yocto@lists.yoctoproject.org Cc: Tim Orling <tim.orling@konsulko.com> Subject: [layerindex-web][PATCH 4/4] Chart.js: upgrade from 2.9.3 to 2.9.4 Date: Mon, 16 Oct 2023 17:59:26 -0700 Message-Id: <20231017005921.2618459-5-tim.orling@konsulko.com> In-Reply-To: <20231017005921.2618459-1-tim.orling@konsulko.com> References: <20231017005921.2618459-1-tim.orling@konsulko.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Series	JavaScript libraries upgrade for CVEs \| expand [layerindex-web,0/4] JavaScript libraries upgrade for CVEs [layerindex-web,1/4] jquery: upgrade 3.4.1 -> 3.7.1 [layerindex-web,2/4] bootstrap: add version to filenames [layerindex-web,3/4] Chart.js: add version to filenames [layerindex-web,4/4] Chart.js: upgrade from 2.9.3 to 2.9.4

diff --git a/layerindex/static/js/Chart-2.9.3.min.js b/layerindex/static/js/Chart-2.9.3.min.js deleted file mode 100644 index 7c16b0d..0000000 --- a/layerindex/static/js/Chart-2.9.3.min.js +++ /dev/null @@ -1,7 +0,0 @@ -/*! - * Chart.js v2.9.3 - * https://www.chartjs.org - * (c) 2019 Chart.js Contributors - * Released under the MIT License - */ -!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e(function(){try{return require("moment")}catch(t){}}()):"function"==typeof define&&define.amd?define(["require"],(function(t){return e(function(){try{return t("moment")}catch(t){}}())})):(t=t||self).Chart=e(t.moment)}(this,(function(t){"use strict";t=t&&t.hasOwnProperty("default")?t.default:t;var 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a,r=n.endAngle;for(i&&(n.endAngle=n.startAngle+it,at(t,n),n.endAngle=r,n.endAngle===n.startAngle&&n.fullCircles&&(n.endAngle+=it,n.fullCircles--)),t.beginPath(),t.arc(n.x,n.y,n.innerRadius,n.startAngle+it,n.startAngle,!0),a=0;a<n.fullCircles;++a)t.stroke();for(t.beginPath(),t.arc(n.x,n.y,e.outerRadius,n.startAngle,n.startAngle+it),a=0;a<n.fullCircles;++a)t.stroke()}(t,e,n,i),i&&at(t,n),t.beginPath(),t.arc(n.x,n.y,e.outerRadius,n.startAngle,n.endAngle),t.arc(n.x,n.y,n.innerRadius,n.endAngle,n.startAngle,!0),t.closePath(),t.stroke()}z._set("global",{elements:{arc:{backgroundColor:z.global.defaultColor,borderColor:"#fff",borderWidth:2,borderAlign:"center"}}});var ot=X.extend({_type:"arc",inLabelRange:function(t){var e=this._view;return!!e&&Math.pow(t-e.x,2)<Math.pow(e.radius+e.hoverRadius,2)},inRange:function(t,e){var n=this._view;if(n){for(var i=V.getAngleFromPoint(n,{x:t,y:e}),a=i.angle,r=i.distance,o=n.startAngle,s=n.endAngle;s<o;)s+=it;for(;a>s;)a-=it;for(;a<o;)a+=it;var l=a>=o&&a<=s,u=r>=n.innerRadius&&r<=n.outerRadius;return l&&u}return!1},getCenterPoint:function(){var t=this._view,e=(t.startAngle+t.endAngle)/2,n=(t.innerRadius+t.outerRadius)/2;return{x:t.x+Math.cos(e)*n,y:t.y+Math.sin(e)*n}},getArea:function(){var t=this._view;return Math.PI*((t.endAngle-t.startAngle)/(2*Math.PI))*(Math.pow(t.outerRadius,2)-Math.pow(t.innerRadius,2))},tooltipPosition:function(){var t=this._view,e=t.startAngle+(t.endAngle-t.startAngle)/2,n=(t.outerRadius-t.innerRadius)/2+t.innerRadius;return{x:t.x+Math.cos(e)*n,y:t.y+Math.sin(e)*n}},draw:function(){var t,e=this._chart.ctx,n=this._view,i="inner"===n.borderAlign?.33:0,a={x:n.x,y:n.y,innerRadius:n.innerRadius,outerRadius:Math.max(n.outerRadius-i,0),pixelMargin:i,startAngle:n.startAngle,endAngle:n.endAngle,fullCircles:Math.floor(n.circumference/it)};if(e.save(),e.fillStyle=n.backgroundColor,e.strokeStyle=n.borderColor,a.fullCircles){for(a.endAngle=a.startAngle+it,e.beginPath(),e.arc(a.x,a.y,a.outerRadius,a.startAngle,a.endAngle),e.arc(a.x,a.y,a.innerRadius,a.endAngle,a.startAngle,!0),e.closePath(),t=0;t<a.fullCircles;++t)e.fill();a.endAngle=a.startAngle+n.circumference%it}e.beginPath(),e.arc(a.x,a.y,a.outerRadius,a.startAngle,a.endAngle),e.arc(a.x,a.y,a.innerRadius,a.endAngle,a.startAngle,!0),e.closePath(),e.fill(),n.borderWidth&&rt(e,n,a),e.restore()}}),st=V.valueOrDefault,lt=z.global.defaultColor;z._set("global",{elements:{line:{tension:.4,backgroundColor:lt,borderWidth:3,borderColor:lt,borderCapStyle:"butt",borderDash:[],borderDashOffset:0,borderJoinStyle:"miter",capBezierPoints:!0,fill:!0}}});var ut=X.extend({_type:"line",draw:function(){var t,e,n,i=this,a=i._view,r=i._chart.ctx,o=a.spanGaps,s=i._children.slice(),l=z.global,u=l.elements.line,d=-1,h=i._loop;if(s.length){if(i._loop){for(t=0;t<s.length;++t)if(e=V.previousItem(s,t),!s[t]._view.skip&&e._view.skip){s=s.slice(t).concat(s.slice(0,t)),h=o;break}h&&s.push(s[0])}for(r.save(),r.lineCap=a.borderCapStyle||u.borderCapStyle,r.setLineDash&&r.setLineDash(a.borderDash||u.borderDash),r.lineDashOffset=st(a.borderDashOffset,u.borderDashOffset),r.lineJoin=a.borderJoinStyle||u.borderJoinStyle,r.lineWidth=st(a.borderWidth,u.borderWidth),r.strokeStyle=a.borderColor||l.defaultColor,r.beginPath(),(n=s[0]._view).skip||(r.moveTo(n.x,n.y),d=0),t=1;t<s.length;++t)n=s[t]._view,e=-1===d?V.previousItem(s,t):s[d],n.skip||(d!==t-1&&!o||-1===d?r.moveTo(n.x,n.y):V.canvas.lineTo(r,e._view,n),d=t);h&&r.closePath(),r.stroke(),r.restore()}}}),dt=V.valueOrDefault,ht=z.global.defaultColor;function ct(t){var e=this._view;return!!e&&Math.abs(t-e.x)<e.radius+e.hitRadius}z._set("global",{elements:{point:{radius:3,pointStyle:"circle",backgroundColor:ht,borderColor:ht,borderWidth:1,hitRadius:1,hoverRadius:4,hoverBorderWidth:1}}});var ft=X.extend({_type:"point",inRange:function(t,e){var n=this._view;return!!n&&Math.pow(t-n.x,2)+Math.pow(e-n.y,2)<Math.pow(n.hitRadius+n.radius,2)},inLabelRange:ct,inXRange:ct,inYRange:function(t){var e=this._view;return!!e&&Math.abs(t-e.y)<e.radius+e.hitRadius},getCenterPoint:function(){var t=this._view;return{x:t.x,y:t.y}},getArea:function(){return Math.PI*Math.pow(this._view.radius,2)},tooltipPosition:function(){var t=this._view;return{x:t.x,y:t.y,padding:t.radius+t.borderWidth}},draw:function(t){var e=this._view,n=this._chart.ctx,i=e.pointStyle,a=e.rotation,r=e.radius,o=e.x,s=e.y,l=z.global,u=l.defaultColor;e.skip||(void 0===t||V.canvas._isPointInArea(e,t))&&(n.strokeStyle=e.borderColor||u,n.lineWidth=dt(e.borderWidth,l.elements.point.borderWidth),n.fillStyle=e.backgroundColor||u,V.canvas.drawPoint(n,i,r,o,s,a))}}),gt=z.global.defaultColor;function pt(t){return t&&void 0!==t.width}function mt(t){var e,n,i,a,r;return pt(t)?(r=t.width/2,e=t.x-r,n=t.x+r,i=Math.min(t.y,t.base),a=Math.max(t.y,t.base)):(r=t.height/2,e=Math.min(t.x,t.base),n=Math.max(t.x,t.base),i=t.y-r,a=t.y+r),{left:e,top:i,right:n,bottom:a}}function vt(t,e,n){return t===e?n:t===n?e:t}function bt(t,e,n){var i,a,r,o,s=t.borderWidth,l=function(t){var e=t.borderSkipped,n={};return e?(t.horizontal?t.base>t.x&&(e=vt(e,"left","right")):t.base<t.y&&(e=vt(e,"bottom","top")),n[e]=!0,n):n}(t);return V.isObject(s)?(i=+s.top||0,a=+s.right||0,r=+s.bottom||0,o=+s.left||0):i=a=r=o=+s||0,{t:l.top||i<0?0:i>n?n:i,r:l.right||a<0?0:a>e?e:a,b:l.bottom||r<0?0:r>n?n:r,l:l.left||o<0?0:o>e?e:o}}function xt(t,e,n){var i=null===e,a=null===n,r=!(!t||i&&a)&&mt(t);return r&&(i||e>=r.left&&e<=r.right)&&(a||n>=r.top&&n<=r.bottom)}z._set("global",{elements:{rectangle:{backgroundColor:gt,borderColor:gt,borderSkipped:"bottom",borderWidth:0}}});var yt=X.extend({_type:"rectangle",draw:function(){var t=this._chart.ctx,e=this._view,n=function(t){var e=mt(t),n=e.right-e.left,i=e.bottom-e.top,a=bt(t,n/2,i/2);return{outer:{x:e.left,y:e.top,w:n,h:i},inner:{x:e.left+a.l,y:e.top+a.t,w:n-a.l-a.r,h:i-a.t-a.b}}}(e),i=n.outer,a=n.inner;t.fillStyle=e.backgroundColor,t.fillRect(i.x,i.y,i.w,i.h),i.w===a.w&&i.h===a.h||(t.save(),t.beginPath(),t.rect(i.x,i.y,i.w,i.h),t.clip(),t.fillStyle=e.borderColor,t.rect(a.x,a.y,a.w,a.h),t.fill("evenodd"),t.restore())},height:function(){var t=this._view;return t.base-t.y},inRange:function(t,e){return xt(this._view,t,e)},inLabelRange:function(t,e){var n=this._view;return pt(n)?xt(n,t,null):xt(n,null,e)},inXRange:function(t){return xt(this._view,t,null)},inYRange:function(t){return xt(this._view,null,t)},getCenterPoint:function(){var t,e,n=this._view;return pt(n)?(t=n.x,e=(n.y+n.base)/2):(t=(n.x+n.base)/2,e=n.y),{x:t,y:e}},getArea:function(){var t=this._view;return pt(t)?t.width*Math.abs(t.y-t.base):t.height*Math.abs(t.x-t.base)},tooltipPosition:function(){var t=this._view;return{x:t.x,y:t.y}}}),_t={},kt=ot,wt=ut,Mt=ft,St=yt;_t.Arc=kt,_t.Line=wt,_t.Point=Mt,_t.Rectangle=St;var Ct=V._deprecated,Pt=V.valueOrDefault;function At(t,e,n){var i,a,r=n.barThickness,o=e.stackCount,s=e.pixels[t],l=V.isNullOrUndef(r)?function(t,e){var n,i,a,r,o=t._length;for(a=1,r=e.length;a<r;++a)o=Math.min(o,Math.abs(e[a]-e[a-1]));for(a=0,r=t.getTicks().length;a<r;++a)i=t.getPixelForTick(a),o=a>0?Math.min(o,Math.abs(i-n)):o,n=i;return o}(e.scale,e.pixels):-1;return V.isNullOrUndef(r)?(i=l*n.categoryPercentage,a=n.barPercentage):(i=r*o,a=1),{chunk:i/o,ratio:a,start:s-i/2}}z._set("bar",{hover:{mode:"label"},scales:{xAxes:[{type:"category",offset:!0,gridLines:{offsetGridLines:!0}}],yAxes:[{type:"linear"}]}}),z._set("global",{datasets:{bar:{categoryPercentage:.8,barPercentage:.9}}});var Dt=nt.extend({dataElementType:_t.Rectangle,_dataElementOptions:["backgroundColor","borderColor","borderSkipped","borderWidth","barPercentage","barThickness","categoryPercentage","maxBarThickness","minBarLength"],initialize:function(){var t,e,n=this;nt.prototype.initialize.apply(n,arguments),(t=n.getMeta()).stack=n.getDataset().stack,t.bar=!0,e=n._getIndexScale().options,Ct("bar chart",e.barPercentage,"scales.[x/y]Axes.barPercentage","dataset.barPercentage"),Ct("bar chart",e.barThickness,"scales.[x/y]Axes.barThickness","dataset.barThickness"),Ct("bar chart",e.categoryPercentage,"scales.[x/y]Axes.categoryPercentage","dataset.categoryPercentage"),Ct("bar 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a=this,r=t._model,o=a._getValueScale(),s=o.getBasePixel(),l=o.isHorizontal(),u=a._ruler||a.getRuler(),d=a.calculateBarValuePixels(a.index,e,i),h=a.calculateBarIndexPixels(a.index,e,u,i);r.horizontal=l,r.base=n?s:d.base,r.x=l?n?s:d.head:h.center,r.y=l?h.center:n?s:d.head,r.height=l?h.size:void 0,r.width=l?void 0:h.size},_getStacks:function(t){var e,n,i=this._getIndexScale(),a=i._getMatchingVisibleMetas(this._type),r=i.options.stacked,o=a.length,s=[];for(e=0;e<o&&(n=a[e],(!1===r||-1===s.indexOf(n.stack)||void 0===r&&void 0===n.stack)&&s.push(n.stack),n.index!==t);++e);return s},getStackCount:function(){return this._getStacks().length},getStackIndex:function(t,e){var n=this._getStacks(t),i=void 0!==e?n.indexOf(e):-1;return-1===i?n.length-1:i},getRuler:function(){var t,e,n=this._getIndexScale(),i=[];for(t=0,e=this.getMeta().data.length;t<e;++t)i.push(n.getPixelForValue(null,t,this.index));return{pixels:i,start:n._startPixel,end:n._endPixel,stackCount:this.getStackCount(),scale:n}},calculateBarValuePixels:function(t,e,n){var i,a,r,o,s,l,u,d=this.chart,h=this._getValueScale(),c=h.isHorizontal(),f=d.data.datasets,g=h._getMatchingVisibleMetas(this._type),p=h._parseValue(f[t].data[e]),m=n.minBarLength,v=h.options.stacked,b=this.getMeta().stack,x=void 0===p.start?0:p.max>=0&&p.min>=0?p.min:p.max,y=void 0===p.start?p.end:p.max>=0&&p.min>=0?p.max-p.min:p.min-p.max,_=g.length;if(v||void 0===v&&void 0!==b)for(i=0;i<_&&(a=g[i]).index!==t;++i)a.stack===b&&(r=void 0===(u=h._parseValue(f[a.index].data[e])).start?u.end:u.min>=0&&u.max>=0?u.max:u.min,(p.min<0&&r<0||p.max>=0&&r>0)&&(x+=r));return o=h.getPixelForValue(x),l=(s=h.getPixelForValue(x+y))-o,void 0!==m&&Math.abs(l)<m&&(l=m,s=y>=0&&!c||y<0&&c?o-m:o+m),{size:l,base:o,head:s,center:s+l/2}},calculateBarIndexPixels:function(t,e,n,i){var a="flex"===i.barThickness?function(t,e,n){var i,a=e.pixels,r=a[t],o=t>0?a[t-1]:null,s=t<a.length-1?a[t+1]:null,l=n.categoryPercentage;return null===o&&(o=r-(null===s?e.end-e.start:s-r)),null===s&&(s=r+r-o),i=r-(r-Math.min(o,s))/2*l,{chunk:Math.abs(s-o)/2*l/e.stackCount,ratio:n.barPercentage,start:i}}(e,n,i):At(e,n,i),r=this.getStackIndex(t,this.getMeta().stack),o=a.start+a.chunk*r+a.chunk/2,s=Math.min(Pt(i.maxBarThickness,1/0),a.chunk*a.ratio);return{base:o-s/2,head:o+s/2,center:o,size:s}},draw:function(){var t=this.chart,e=this._getValueScale(),n=this.getMeta().data,i=this.getDataset(),a=n.length,r=0;for(V.canvas.clipArea(t.ctx,t.chartArea);r<a;++r){var o=e._parseValue(i.data[r]);isNaN(o.min)||isNaN(o.max)||n[r].draw()}V.canvas.unclipArea(t.ctx)},_resolveDataElementOptions:function(){var t=this,e=V.extend({},nt.prototype._resolveDataElementOptions.apply(t,arguments)),n=t._getIndexScale().options,i=t._getValueScale().options;return e.barPercentage=Pt(n.barPercentage,e.barPercentage),e.barThickness=Pt(n.barThickness,e.barThickness),e.categoryPercentage=Pt(n.categoryPercentage,e.categoryPercentage),e.maxBarThickness=Pt(n.maxBarThickness,e.maxBarThickness),e.minBarLength=Pt(i.minBarLength,e.minBarLength),e}}),Tt=V.valueOrDefault,It=V.options.resolve;z._set("bubble",{hover:{mode:"single"},scales:{xAxes:[{type:"linear",position:"bottom",id:"x-axis-0"}],yAxes:[{type:"linear",position:"left",id:"y-axis-0"}]},tooltips:{callbacks:{title:function(){return""},label:function(t,e){var n=e.datasets[t.datasetIndex].label||"",i=e.datasets[t.datasetIndex].data[t.index];return n+": ("+t.xLabel+", "+t.yLabel+", "+i.r+")"}}}});var Ft=nt.extend({dataElementType:_t.Point,_dataElementOptions:["backgroundColor","borderColor","borderWidth","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth","hoverRadius","hitRadius","pointStyle","rotation"],update:function(t){var e=this,n=e.getMeta().data;V.each(n,(function(n,i){e.updateElement(n,i,t)}))},updateElement:function(t,e,n){var i=this,a=i.getMeta(),r=t.custom||{},o=i.getScaleForId(a.xAxisID),s=i.getScaleForId(a.yAxisID),l=i._resolveDataElementOptions(t,e),u=i.getDataset().data[e],d=i.index,h=n?o.getPixelForDecimal(.5):o.getPixelForValue("object"==typeof u?u:NaN,e,d),c=n?s.getBasePixel():s.getPixelForValue(u,e,d);t._xScale=o,t._yScale=s,t._options=l,t._datasetIndex=d,t._index=e,t._model={backgroundColor:l.backgroundColor,borderColor:l.borderColor,borderWidth:l.borderWidth,hitRadius:l.hitRadius,pointStyle:l.pointStyle,rotation:l.rotation,radius:n?0:l.radius,skip:r.skip||isNaN(h)||isNaN(c),x:h,y:c},t.pivot()},setHoverStyle:function(t){var e=t._model,n=t._options,i=V.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=Tt(n.hoverBackgroundColor,i(n.backgroundColor)),e.borderColor=Tt(n.hoverBorderColor,i(n.borderColor)),e.borderWidth=Tt(n.hoverBorderWidth,n.borderWidth),e.radius=n.radius+n.hoverRadius},_resolveDataElementOptions:function(t,e){var n=this,i=n.chart,a=n.getDataset(),r=t.custom||{},o=a.data[e]||{},s=nt.prototype._resolveDataElementOptions.apply(n,arguments),l={chart:i,dataIndex:e,dataset:a,datasetIndex:n.index};return n._cachedDataOpts===s&&(s=V.extend({},s)),s.radius=It([r.radius,o.r,n._config.radius,i.options.elements.point.radius],l,e),s}}),Lt=V.valueOrDefault,Ot=Math.PI,Rt=2*Ot,zt=Ot/2;z._set("doughnut",{animation:{animateRotate:!0,animateScale:!1},hover:{mode:"single"},legendCallback:function(t){var e,n,i,a=document.createElement("ul"),r=t.data,o=r.datasets,s=r.labels;if(a.setAttribute("class",t.id+"-legend"),o.length)for(e=0,n=o[0].data.length;e<n;++e)(i=a.appendChild(document.createElement("li"))).appendChild(document.createElement("span")).style.backgroundColor=o[0].backgroundColor[e],s[e]&&i.appendChild(document.createTextNode(s[e]));return a.outerHTML},legend:{labels:{generateLabels:function(t){var e=t.data;return e.labels.length&&e.datasets.length?e.labels.map((function(n,i){var a=t.getDatasetMeta(0),r=a.controller.getStyle(i);return{text:n,fillStyle:r.backgroundColor,strokeStyle:r.borderColor,lineWidth:r.borderWidth,hidden:isNaN(e.datasets[0].data[i])||a.data[i].hidden,index:i}})):[]}},onClick:function(t,e){var n,i,a,r=e.index,o=this.chart;for(n=0,i=(o.data.datasets||[]).length;n<i;++n)(a=o.getDatasetMeta(n)).data[r]&&(a.data[r].hidden=!a.data[r].hidden);o.update()}},cutoutPercentage:50,rotation:-zt,circumference:Rt,tooltips:{callbacks:{title:function(){return""},label:function(t,e){var n=e.labels[t.index],i=": "+e.datasets[t.datasetIndex].data[t.index];return V.isArray(n)?(n=n.slice())[0]+=i:n+=i,n}}}});var Nt=nt.extend({dataElementType:_t.Arc,linkScales:V.noop,_dataElementOptions:["backgroundColor","borderColor","borderWidth","borderAlign","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth"],getRingIndex:function(t){for(var e=0,n=0;n<t;++n)this.chart.isDatasetVisible(n)&&++e;return e},update:function(t){var e,n,i,a,r=this,o=r.chart,s=o.chartArea,l=o.options,u=1,d=1,h=0,c=0,f=r.getMeta(),g=f.data,p=l.cutoutPercentage/100||0,m=l.circumference,v=r._getRingWeight(r.index);if(m<Rt){var b=l.rotation%Rt,x=(b+=b>=Ot?-Rt:b<-Ot?Rt:0)+m,y=Math.cos(b),_=Math.sin(b),k=Math.cos(x),w=Math.sin(x),M=b<=0&&x>=0||x>=Rt,S=b<=zt&&x>=zt||x>=Rt+zt,C=b<=-zt&&x>=-zt||x>=Ot+zt,P=b===-Ot||x>=Ot?-1:Math.min(y,y*p,k,k*p),A=C?-1:Math.min(_,_*p,w,w*p),D=M?1:Math.max(y,y*p,k,k*p),T=S?1:Math.max(_,_*p,w,w*p);u=(D-P)/2,d=(T-A)/2,h=-(D+P)/2,c=-(T+A)/2}for(i=0,a=g.length;i<a;++i)g[i]._options=r._resolveDataElementOptions(g[i],i);for(o.borderWidth=r.getMaxBorderWidth(),e=(s.right-s.left-o.borderWidth)/u,n=(s.bottom-s.top-o.borderWidth)/d,o.outerRadius=Math.max(Math.min(e,n)/2,0),o.innerRadius=Math.max(o.outerRadius*p,0),o.radiusLength=(o.outerRadius-o.innerRadius)/(r._getVisibleDatasetWeightTotal()||1),o.offsetX=h*o.outerRadius,o.offsetY=c*o.outerRadius,f.total=r.calculateTotal(),r.outerRadius=o.outerRadius-o.radiusLength*r._getRingWeightOffset(r.index),r.innerRadius=Math.max(r.outerRadius-o.radiusLength*v,0),i=0,a=g.length;i<a;++i)r.updateElement(g[i],i,t)},updateElement:function(t,e,n){var i=this,a=i.chart,r=a.chartArea,o=a.options,s=o.animation,l=(r.left+r.right)/2,u=(r.top+r.bottom)/2,d=o.rotation,h=o.rotation,c=i.getDataset(),f=n&&s.animateRotate?0:t.hidden?0:i.calculateCircumference(c.data[e])*(o.circumference/Rt),g=n&&s.animateScale?0:i.innerRadius,p=n&&s.animateScale?0:i.outerRadius,m=t._options||{};V.extend(t,{_datasetIndex:i.index,_index:e,_model:{backgroundColor:m.backgroundColor,borderColor:m.borderColor,borderWidth:m.borderWidth,borderAlign:m.borderAlign,x:l+a.offsetX,y:u+a.offsetY,startAngle:d,endAngle:h,circumference:f,outerRadius:p,innerRadius:g,label:V.valueAtIndexOrDefault(c.label,e,a.data.labels[e])}});var v=t._model;n&&s.animateRotate||(v.startAngle=0===e?o.rotation:i.getMeta().data[e-1]._model.endAngle,v.endAngle=v.startAngle+v.circumference),t.pivot()},calculateTotal:function(){var t,e=this.getDataset(),n=this.getMeta(),i=0;return V.each(n.data,(function(n,a){t=e.data[a],isNaN(t)||n.hidden||(i+=Math.abs(t))})),i},calculateCircumference:function(t){var e=this.getMeta().total;return e>0&&!isNaN(t)?Rt*(Math.abs(t)/e):0},getMaxBorderWidth:function(t){var e,n,i,a,r,o,s,l,u=0,d=this.chart;if(!t)for(e=0,n=d.data.datasets.length;e<n;++e)if(d.isDatasetVisible(e)){t=(i=d.getDatasetMeta(e)).data,e!==this.index&&(r=i.controller);break}if(!t)return 0;for(e=0,n=t.length;e<n;++e)a=t[e],r?(r._configure(),o=r._resolveDataElementOptions(a,e)):o=a._options,"inner"!==o.borderAlign&&(s=o.borderWidth,u=(l=o.hoverBorderWidth)>(u=s>u?s:u)?l:u);return u},setHoverStyle:function(t){var e=t._model,n=t._options,i=V.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth},e.backgroundColor=Lt(n.hoverBackgroundColor,i(n.backgroundColor)),e.borderColor=Lt(n.hoverBorderColor,i(n.borderColor)),e.borderWidth=Lt(n.hoverBorderWidth,n.borderWidth)},_getRingWeightOffset:function(t){for(var e=0,n=0;n<t;++n)this.chart.isDatasetVisible(n)&&(e+=this._getRingWeight(n));return e},_getRingWeight:function(t){return Math.max(Lt(this.chart.data.datasets[t].weight,1),0)},_getVisibleDatasetWeightTotal:function(){return this._getRingWeightOffset(this.chart.data.datasets.length)}});z._set("horizontalBar",{hover:{mode:"index",axis:"y"},scales:{xAxes:[{type:"linear",position:"bottom"}],yAxes:[{type:"category",position:"left",offset:!0,gridLines:{offsetGridLines:!0}}]},elements:{rectangle:{borderSkipped:"left"}},tooltips:{mode:"index",axis:"y"}}),z._set("global",{datasets:{horizontalBar:{categoryPercentage:.8,barPercentage:.9}}});var Bt=Dt.extend({_getValueScaleId:function(){return this.getMeta().xAxisID},_getIndexScaleId:function(){return this.getMeta().yAxisID}}),Et=V.valueOrDefault,Wt=V.options.resolve,Vt=V.canvas._isPointInArea;function Ht(t,e){var n=t&&t.options.ticks||{},i=n.reverse,a=void 0===n.min?e:0,r=void 0===n.max?e:0;return{start:i?r:a,end:i?a:r}}function jt(t,e,n){var i=n/2,a=Ht(t,i),r=Ht(e,i);return{top:r.end,right:a.end,bottom:r.start,left:a.start}}function qt(t){var e,n,i,a;return V.isObject(t)?(e=t.top,n=t.right,i=t.bottom,a=t.left):e=n=i=a=t,{top:e,right:n,bottom:i,left:a}}z._set("line",{showLines:!0,spanGaps:!1,hover:{mode:"label"},scales:{xAxes:[{type:"category",id:"x-axis-0"}],yAxes:[{type:"linear",id:"y-axis-0"}]}});var Ut=nt.extend({datasetElementType:_t.Line,dataElementType:_t.Point,_datasetElementOptions:["backgroundColor","borderCapStyle","borderColor","borderDash","borderDashOffset","borderJoinStyle","borderWidth","cubicInterpolationMode","fill"],_dataElementOptions:{backgroundColor:"pointBackgroundColor",borderColor:"pointBorderColor",borderWidth:"pointBorderWidth",hitRadius:"pointHitRadius",hoverBackgroundColor:"pointHoverBackgroundColor",hoverBorderColor:"pointHoverBorderColor",hoverBorderWidth:"pointHoverBorderWidth",hoverRadius:"pointHoverRadius",pointStyle:"pointStyle",radius:"pointRadius",rotation:"pointRotation"},update:function(t){var e,n,i=this,a=i.getMeta(),r=a.dataset,o=a.data||[],s=i.chart.options,l=i._config,u=i._showLine=Et(l.showLine,s.showLines);for(i._xScale=i.getScaleForId(a.xAxisID),i._yScale=i.getScaleForId(a.yAxisID),u&&(void 0!==l.tension&&void 0===l.lineTension&&(l.lineTension=l.tension),r._scale=i._yScale,r._datasetIndex=i.index,r._children=o,r._model=i._resolveDatasetElementOptions(r),r.pivot()),e=0,n=o.length;e<n;++e)i.updateElement(o[e],e,t);for(u&&0!==r._model.tension&&i.updateBezierControlPoints(),e=0,n=o.length;e<n;++e)o[e].pivot()},updateElement:function(t,e,n){var i,a,r=this,o=r.getMeta(),s=t.custom||{},l=r.getDataset(),u=r.index,d=l.data[e],h=r._xScale,c=r._yScale,f=o.dataset._model,g=r._resolveDataElementOptions(t,e);i=h.getPixelForValue("object"==typeof d?d:NaN,e,u),a=n?c.getBasePixel():r.calculatePointY(d,e,u),t._xScale=h,t._yScale=c,t._options=g,t._datasetIndex=u,t._index=e,t._model={x:i,y:a,skip:s.skip||isNaN(i)||isNaN(a),radius:g.radius,pointStyle:g.pointStyle,rotation:g.rotation,backgroundColor:g.backgroundColor,borderColor:g.borderColor,borderWidth:g.borderWidth,tension:Et(s.tension,f?f.tension:0),steppedLine:!!f&&f.steppedLine,hitRadius:g.hitRadius}},_resolveDatasetElementOptions:function(t){var e=this,n=e._config,i=t.custom||{},a=e.chart.options,r=a.elements.line,o=nt.prototype._resolveDatasetElementOptions.apply(e,arguments);return o.spanGaps=Et(n.spanGaps,a.spanGaps),o.tension=Et(n.lineTension,r.tension),o.steppedLine=Wt([i.steppedLine,n.steppedLine,r.stepped]),o.clip=qt(Et(n.clip,jt(e._xScale,e._yScale,o.borderWidth))),o},calculatePointY:function(t,e,n){var i,a,r,o,s,l,u,d=this.chart,h=this._yScale,c=0,f=0;if(h.options.stacked){for(s=+h.getRightValue(t),u=(l=d._getSortedVisibleDatasetMetas()).length,i=0;i<u&&(r=l[i]).index!==n;++i)a=d.data.datasets[r.index],"line"===r.type&&r.yAxisID===h.id&&((o=+h.getRightValue(a.data[e]))<0?f+=o||0:c+=o||0);return s<0?h.getPixelForValue(f+s):h.getPixelForValue(c+s)}return h.getPixelForValue(t)},updateBezierControlPoints:function(){var t,e,n,i,a=this.chart,r=this.getMeta(),o=r.dataset._model,s=a.chartArea,l=r.data||[];function u(t,e,n){return Math.max(Math.min(t,n),e)}if(o.spanGaps&&(l=l.filter((function(t){return!t._model.skip}))),"monotone"===o.cubicInterpolationMode)V.splineCurveMonotone(l);else for(t=0,e=l.length;t<e;++t)n=l[t]._model,i=V.splineCurve(V.previousItem(l,t)._model,n,V.nextItem(l,t)._model,o.tension),n.controlPointPreviousX=i.previous.x,n.controlPointPreviousY=i.previous.y,n.controlPointNextX=i.next.x,n.controlPointNextY=i.next.y;if(a.options.elements.line.capBezierPoints)for(t=0,e=l.length;t<e;++t)n=l[t]._model,Vt(n,s)&&(t>0&&Vt(l[t-1]._model,s)&&(n.controlPointPreviousX=u(n.controlPointPreviousX,s.left,s.right),n.controlPointPreviousY=u(n.controlPointPreviousY,s.top,s.bottom)),t<l.length-1&&Vt(l[t+1]._model,s)&&(n.controlPointNextX=u(n.controlPointNextX,s.left,s.right),n.controlPointNextY=u(n.controlPointNextY,s.top,s.bottom)))},draw:function(){var t,e=this.chart,n=this.getMeta(),i=n.data||[],a=e.chartArea,r=e.canvas,o=0,s=i.length;for(this._showLine&&(t=n.dataset._model.clip,V.canvas.clipArea(e.ctx,{left:!1===t.left?0:a.left-t.left,right:!1===t.right?r.width:a.right+t.right,top:!1===t.top?0:a.top-t.top,bottom:!1===t.bottom?r.height:a.bottom+t.bottom}),n.dataset.draw(),V.canvas.unclipArea(e.ctx));o<s;++o)i[o].draw(a)},setHoverStyle:function(t){var e=t._model,n=t._options,i=V.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=Et(n.hoverBackgroundColor,i(n.backgroundColor)),e.borderColor=Et(n.hoverBorderColor,i(n.borderColor)),e.borderWidth=Et(n.hoverBorderWidth,n.borderWidth),e.radius=Et(n.hoverRadius,n.radius)}}),Yt=V.options.resolve;z._set("polarArea",{scale:{type:"radialLinear",angleLines:{display:!1},gridLines:{circular:!0},pointLabels:{display:!1},ticks:{beginAtZero:!0}},animation:{animateRotate:!0,animateScale:!0},startAngle:-.5*Math.PI,legendCallback:function(t){var e,n,i,a=document.createElement("ul"),r=t.data,o=r.datasets,s=r.labels;if(a.setAttribute("class",t.id+"-legend"),o.length)for(e=0,n=o[0].data.length;e<n;++e)(i=a.appendChild(document.createElement("li"))).appendChild(document.createElement("span")).style.backgroundColor=o[0].backgroundColor[e],s[e]&&i.appendChild(document.createTextNode(s[e]));return a.outerHTML},legend:{labels:{generateLabels:function(t){var e=t.data;return e.labels.length&&e.datasets.length?e.labels.map((function(n,i){var a=t.getDatasetMeta(0),r=a.controller.getStyle(i);return{text:n,fillStyle:r.backgroundColor,strokeStyle:r.borderColor,lineWidth:r.borderWidth,hidden:isNaN(e.datasets[0].data[i])||a.data[i].hidden,index:i}})):[]}},onClick:function(t,e){var n,i,a,r=e.index,o=this.chart;for(n=0,i=(o.data.datasets||[]).length;n<i;++n)(a=o.getDatasetMeta(n)).data[r].hidden=!a.data[r].hidden;o.update()}},tooltips:{callbacks:{title:function(){return""},label:function(t,e){return e.labels[t.index]+": "+t.yLabel}}}});var Gt=nt.extend({dataElementType:_t.Arc,linkScales:V.noop,_dataElementOptions:["backgroundColor","borderColor","borderWidth","borderAlign","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth"],_getIndexScaleId:function(){return this.chart.scale.id},_getValueScaleId:function(){return this.chart.scale.id},update:function(t){var e,n,i,a=this,r=a.getDataset(),o=a.getMeta(),s=a.chart.options.startAngle||0,l=a._starts=[],u=a._angles=[],d=o.data;for(a._updateRadius(),o.count=a.countVisibleElements(),e=0,n=r.data.length;e<n;e++)l[e]=s,i=a._computeAngle(e),u[e]=i,s+=i;for(e=0,n=d.length;e<n;++e)d[e]._options=a._resolveDataElementOptions(d[e],e),a.updateElement(d[e],e,t)},_updateRadius:function(){var t=this,e=t.chart,n=e.chartArea,i=e.options,a=Math.min(n.right-n.left,n.bottom-n.top);e.outerRadius=Math.max(a/2,0),e.innerRadius=Math.max(i.cutoutPercentage?e.outerRadius/100*i.cutoutPercentage:1,0),e.radiusLength=(e.outerRadius-e.innerRadius)/e.getVisibleDatasetCount(),t.outerRadius=e.outerRadius-e.radiusLength*t.index,t.innerRadius=t.outerRadius-e.radiusLength},updateElement:function(t,e,n){var i=this,a=i.chart,r=i.getDataset(),o=a.options,s=o.animation,l=a.scale,u=a.data.labels,d=l.xCenter,h=l.yCenter,c=o.startAngle,f=t.hidden?0:l.getDistanceFromCenterForValue(r.data[e]),g=i._starts[e],p=g+(t.hidden?0:i._angles[e]),m=s.animateScale?0:l.getDistanceFromCenterForValue(r.data[e]),v=t._options||{};V.extend(t,{_datasetIndex:i.index,_index:e,_scale:l,_model:{backgroundColor:v.backgroundColor,borderColor:v.borderColor,borderWidth:v.borderWidth,borderAlign:v.borderAlign,x:d,y:h,innerRadius:0,outerRadius:n?m:f,startAngle:n&&s.animateRotate?c:g,endAngle:n&&s.animateRotate?c:p,label:V.valueAtIndexOrDefault(u,e,u[e])}}),t.pivot()},countVisibleElements:function(){var t=this.getDataset(),e=this.getMeta(),n=0;return V.each(e.data,(function(e,i){isNaN(t.data[i])||e.hidden||n++})),n},setHoverStyle:function(t){var e=t._model,n=t._options,i=V.getHoverColor,a=V.valueOrDefault;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth},e.backgroundColor=a(n.hoverBackgroundColor,i(n.backgroundColor)),e.borderColor=a(n.hoverBorderColor,i(n.borderColor)),e.borderWidth=a(n.hoverBorderWidth,n.borderWidth)},_computeAngle:function(t){var e=this,n=this.getMeta().count,i=e.getDataset(),a=e.getMeta();if(isNaN(i.data[t])||a.data[t].hidden)return 0;var r={chart:e.chart,dataIndex:t,dataset:i,datasetIndex:e.index};return Yt([e.chart.options.elements.arc.angle,2*Math.PI/n],r,t)}});z._set("pie",V.clone(z.doughnut)),z._set("pie",{cutoutPercentage:0});var Xt=Nt,Kt=V.valueOrDefault;z._set("radar",{spanGaps:!1,scale:{type:"radialLinear"},elements:{line:{fill:"start",tension:0}}});var Zt=nt.extend({datasetElementType:_t.Line,dataElementType:_t.Point,linkScales:V.noop,_datasetElementOptions:["backgroundColor","borderWidth","borderColor","borderCapStyle","borderDash","borderDashOffset","borderJoinStyle","fill"],_dataElementOptions:{backgroundColor:"pointBackgroundColor",borderColor:"pointBorderColor",borderWidth:"pointBorderWidth",hitRadius:"pointHitRadius",hoverBackgroundColor:"pointHoverBackgroundColor",hoverBorderColor:"pointHoverBorderColor",hoverBorderWidth:"pointHoverBorderWidth",hoverRadius:"pointHoverRadius",pointStyle:"pointStyle",radius:"pointRadius",rotation:"pointRotation"},_getIndexScaleId:function(){return this.chart.scale.id},_getValueScaleId:function(){return this.chart.scale.id},update:function(t){var e,n,i=this,a=i.getMeta(),r=a.dataset,o=a.data||[],s=i.chart.scale,l=i._config;for(void 0!==l.tension&&void 0===l.lineTension&&(l.lineTension=l.tension),r._scale=s,r._datasetIndex=i.index,r._children=o,r._loop=!0,r._model=i._resolveDatasetElementOptions(r),r.pivot(),e=0,n=o.length;e<n;++e)i.updateElement(o[e],e,t);for(i.updateBezierControlPoints(),e=0,n=o.length;e<n;++e)o[e].pivot()},updateElement:function(t,e,n){var i=this,a=t.custom||{},r=i.getDataset(),o=i.chart.scale,s=o.getPointPositionForValue(e,r.data[e]),l=i._resolveDataElementOptions(t,e),u=i.getMeta().dataset._model,d=n?o.xCenter:s.x,h=n?o.yCenter:s.y;t._scale=o,t._options=l,t._datasetIndex=i.index,t._index=e,t._model={x:d,y:h,skip:a.skip||isNaN(d)||isNaN(h),radius:l.radius,pointStyle:l.pointStyle,rotation:l.rotation,backgroundColor:l.backgroundColor,borderColor:l.borderColor,borderWidth:l.borderWidth,tension:Kt(a.tension,u?u.tension:0),hitRadius:l.hitRadius}},_resolveDatasetElementOptions:function(){var t=this,e=t._config,n=t.chart.options,i=nt.prototype._resolveDatasetElementOptions.apply(t,arguments);return i.spanGaps=Kt(e.spanGaps,n.spanGaps),i.tension=Kt(e.lineTension,n.elements.line.tension),i},updateBezierControlPoints:function(){var t,e,n,i,a=this.getMeta(),r=this.chart.chartArea,o=a.data||[];function s(t,e,n){return Math.max(Math.min(t,n),e)}for(a.dataset._model.spanGaps&&(o=o.filter((function(t){return!t._model.skip}))),t=0,e=o.length;t<e;++t)n=o[t]._model,i=V.splineCurve(V.previousItem(o,t,!0)._model,n,V.nextItem(o,t,!0)._model,n.tension),n.controlPointPreviousX=s(i.previous.x,r.left,r.right),n.controlPointPreviousY=s(i.previous.y,r.top,r.bottom),n.controlPointNextX=s(i.next.x,r.left,r.right),n.controlPointNextY=s(i.next.y,r.top,r.bottom)},setHoverStyle:function(t){var 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t,e,n,i,a,r,o,s=this,l=s.options,u=l.ticks,d=s.getTicks().length,h=u.minRotation||0,c=u.maxRotation,f=h;!s._isVisible()||!u.display||h>=c||d<=1||!s.isHorizontal()?s.labelRotation=h:(e=(t=s._getLabelSizes()).widest.width,n=t.highest.height-t.highest.offset,i=Math.min(s.maxWidth,s.chart.width-e),e+6>(a=l.offset?s.maxWidth/d:i/(d-1))&&(a=i/(d-(l.offset?.5:1)),r=s.maxHeight-cn(l.gridLines)-u.padding-fn(l.scaleLabel),o=Math.sqrt(e*e+n*n),f=V.toDegrees(Math.min(Math.asin(Math.min((t.highest.height+6)/a,1)),Math.asin(Math.min(r/o,1))-Math.asin(n/o))),f=Math.max(h,Math.min(c,f))),s.labelRotation=f)},afterCalculateTickRotation:function(){V.callback(this.options.afterCalculateTickRotation,[this])},beforeFit:function(){V.callback(this.options.beforeFit,[this])},fit:function(){var 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e,n,i,a,r,o,s,l,u,d,h,c,f,g,p,m,v,b=this,x=b.chart,y=b.options,_=y.gridLines,k=y.position,w=_.offsetGridLines,M=b.isHorizontal(),S=b._ticksToDraw,C=S.length+(w?1:0),P=cn(_),A=[],D=_.drawBorder?un(_.lineWidth,0,0):0,T=D/2,I=V._alignPixel,F=function(t){return I(x,t,D)};for("top"===k?(e=F(b.bottom),s=b.bottom-P,u=e-T,h=F(t.top)+T,f=t.bottom):"bottom"===k?(e=F(b.top),h=t.top,f=F(t.bottom)-T,s=e+T,u=b.top+P):"left"===k?(e=F(b.right),o=b.right-P,l=e-T,d=F(t.left)+T,c=t.right):(e=F(b.left),d=t.left,c=F(t.right)-T,o=e+T,l=b.left+P),n=0;n<C;++n)i=S[n]||{},sn(i.label)&&n<S.length||(n===b.zeroLineIndex&&y.offset===w?(g=_.zeroLineWidth,p=_.zeroLineColor,m=_.zeroLineBorderDash||[],v=_.zeroLineBorderDashOffset||0):(g=un(_.lineWidth,n,1),p=un(_.color,n,"rgba(0,0,0,0.1)"),m=_.borderDash||[],v=_.borderDashOffset||0),void 0!==(a=dn(b,i._index||n,w))&&(r=I(x,a,g),M?o=l=d=c=r:s=u=h=f=r,A.push({tx1:o,ty1:s,tx2:l,ty2:u,x1:d,y1:h,x2:c,y2:f,width:g,color:p,borderDash:m,borderDashOffset:v})));return A.ticksLength=C,A.borderValue=e,A},_computeLabelItems:function(){var t,e,n,i,a,r,o,s,l,u,d,h,c=this,f=c.options,g=f.ticks,p=f.position,m=g.mirror,v=c.isHorizontal(),b=c._ticksToDraw,x=pn(g),y=g.padding,_=cn(f.gridLines),k=-V.toRadians(c.labelRotation),w=[];for("top"===p?(r=c.bottom-_-y,o=k?"left":"center"):"bottom"===p?(r=c.top+_+y,o=k?"right":"center"):"left"===p?(a=c.right-(m?0:_)-y,o=m?"left":"right"):(a=c.left+(m?0:_)+y,o=m?"right":"left"),t=0,e=b.length;t<e;++t)i=(n=b[t]).label,sn(i)||(s=c.getPixelForTick(n._index||t)+g.labelOffset,u=(l=n.major?x.major:x.minor).lineHeight,d=on(i)?i.length:1,v?(a=s,h="top"===p?((k?1:.5)-d)*u:(k?0:.5)*u):(r=s,h=(1-d)*u/2),w.push({x:a,y:r,rotation:k,label:i,font:l,textOffset:h,textAlign:o}));return w},_drawGrid:function(t){var e=this,n=e.options.gridLines;if(n.display){var i,a,r,o,s,l=e.ctx,u=e.chart,d=V._alignPixel,h=n.drawBorder?un(n.lineWidth,0,0):0,c=e._gridLineItems||(e._gridLineItems=e._computeGridLineItems(t));for(r=0,o=c.length;r<o;++r)i=(s=c[r]).width,a=s.color,i&&a&&(l.save(),l.lineWidth=i,l.strokeStyle=a,l.setLineDash&&(l.setLineDash(s.borderDash),l.lineDashOffset=s.borderDashOffset),l.beginPath(),n.drawTicks&&(l.moveTo(s.tx1,s.ty1),l.lineTo(s.tx2,s.ty2)),n.drawOnChartArea&&(l.moveTo(s.x1,s.y1),l.lineTo(s.x2,s.y2)),l.stroke(),l.restore());if(h){var f,g,p,m,v=h,b=un(n.lineWidth,c.ticksLength-1,1),x=c.borderValue;e.isHorizontal()?(f=d(u,e.left,v)-v/2,g=d(u,e.right,b)+b/2,p=m=x):(p=d(u,e.top,v)-v/2,m=d(u,e.bottom,b)+b/2,f=g=x),l.lineWidth=h,l.strokeStyle=un(n.color,0),l.beginPath(),l.moveTo(f,p),l.lineTo(g,m),l.stroke()}}},_drawLabels:function(){var t=this;if(t.options.ticks.display){var e,n,i,a,r,o,s,l,u=t.ctx,d=t._labelItems||(t._labelItems=t._computeLabelItems());for(e=0,i=d.length;e<i;++e){if(o=(r=d[e]).font,u.save(),u.translate(r.x,r.y),u.rotate(r.rotation),u.font=o.string,u.fillStyle=o.color,u.textBaseline="middle",u.textAlign=r.textAlign,s=r.label,l=r.textOffset,on(s))for(n=0,a=s.length;n<a;++n)u.fillText(""+s[n],0,l),l+=o.lineHeight;else u.fillText(s,0,l);u.restore()}}},_drawTitle:function(){var t=this,e=t.ctx,n=t.options,i=n.scaleLabel;if(i.display){var a,r,o=ln(i.fontColor,z.global.defaultFontColor),s=V.options._parseFont(i),l=V.options.toPadding(i.padding),u=s.lineHeight/2,d=n.position,h=0;if(t.isHorizontal())a=t.left+t.width/2,r="bottom"===d?t.bottom-u-l.bottom:t.top+u+l.top;else{var c="left"===d;a=c?t.left+u+l.top:t.right-u-l.top,r=t.top+t.height/2,h=c?-.5*Math.PI:.5*Math.PI}e.save(),e.translate(a,r),e.rotate(h),e.textAlign="center",e.textBaseline="middle",e.fillStyle=o,e.font=s.string,e.fillText(i.labelString,0,0),e.restore()}},draw:function(t){this._isVisible()&&(this._drawGrid(t),this._drawTitle(),this._drawLabels())},_layers:function(){var t=this,e=t.options,n=e.ticks&&e.ticks.z||0,i=e.gridLines&&e.gridLines.z||0;return t._isVisible()&&n!==i&&t.draw===t._draw?[{z:i,draw:function(){t._drawGrid.apply(t,arguments),t._drawTitle.apply(t,arguments)}},{z:n,draw:function(){t._drawLabels.apply(t,arguments)}}]:[{z:n,draw:function(){t.draw.apply(t,arguments)}}]},_getMatchingVisibleMetas:function(t){var e=this,n=e.isHorizontal();return e.chart._getSortedVisibleDatasetMetas().filter((function(i){return(!t||i.type===t)&&(n?i.xAxisID===e.id:i.yAxisID===e.id)}))}});bn.prototype._draw=bn.prototype.draw;var xn=bn,yn=V.isNullOrUndef,_n=xn.extend({determineDataLimits:function(){var t,e=this,n=e._getLabels(),i=e.options.ticks,a=i.min,r=i.max,o=0,s=n.length-1;void 0!==a&&(t=n.indexOf(a))>=0&&(o=t),void 0!==r&&(t=n.indexOf(r))>=0&&(s=t),e.minIndex=o,e.maxIndex=s,e.min=n[o],e.max=n[s]},buildTicks:function(){var t=this._getLabels(),e=this.minIndex,n=this.maxIndex;this.ticks=0===e&&n===t.length-1?t:t.slice(e,n+1)},getLabelForIndex:function(t,e){var n=this.chart;return n.getDatasetMeta(e).controller._getValueScaleId()===this.id?this.getRightValue(n.data.datasets[e].data[t]):this._getLabels()[t]},_configure:function(){var t=this,e=t.options.offset,n=t.ticks;xn.prototype._configure.call(t),t.isHorizontal()||(t._reversePixels=!t._reversePixels),n&&(t._startValue=t.minIndex-(e?.5:0),t._valueRange=Math.max(n.length-(e?0:1),1))},getPixelForValue:function(t,e,n){var i,a,r,o=this;return yn(e)||yn(n)||(t=o.chart.data.datasets[n].data[e]),yn(t)||(i=o.isHorizontal()?t.x:t.y),(void 0!==i||void 0!==t&&isNaN(e))&&(a=o._getLabels(),t=V.valueOrDefault(i,t),e=-1!==(r=a.indexOf(t))?r:e,isNaN(e)&&(e=t)),o.getPixelForDecimal((e-o._startValue)/o._valueRange)},getPixelForTick:function(t){var e=this.ticks;return t<0||t>e.length-1?null:this.getPixelForValue(e[t],t+this.minIndex)},getValueForPixel:function(t){var e=Math.round(this._startValue+this.getDecimalForPixel(t)*this._valueRange);return Math.min(Math.max(e,0),this.ticks.length-1)},getBasePixel:function(){return this.bottom}}),kn={position:"bottom"};_n._defaults=kn;var wn=V.noop,Mn=V.isNullOrUndef;var Sn=xn.extend({getRightValue:function(t){return"string"==typeof t?+t:xn.prototype.getRightValue.call(this,t)},handleTickRangeOptions:function(){var t=this,e=t.options.ticks;if(e.beginAtZero){var n=V.sign(t.min),i=V.sign(t.max);n<0&&i<0?t.max=0:n>0&&i>0&&(t.min=0)}var a=void 0!==e.min||void 0!==e.suggestedMin,r=void 0!==e.max||void 0!==e.suggestedMax;void 0!==e.min?t.min=e.min:void 0!==e.suggestedMin&&(null===t.min?t.min=e.suggestedMin:t.min=Math.min(t.min,e.suggestedMin)),void 0!==e.max?t.max=e.max:void 0!==e.suggestedMax&&(null===t.max?t.max=e.suggestedMax:t.max=Math.max(t.max,e.suggestedMax)),a!==r&&t.min>=t.max&&(a?t.max=t.min+1:t.min=t.max-1),t.min===t.max&&(t.max++,e.beginAtZero||t.min--)},getTickLimit:function(){var t,e=this.options.ticks,n=e.stepSize,i=e.maxTicksLimit;return n?t=Math.ceil(this.max/n)-Math.floor(this.min/n)+1:(t=this._computeTickLimit(),i=i||11),i&&(t=Math.min(i,t)),t},_computeTickLimit:function(){return Number.POSITIVE_INFINITY},handleDirectionalChanges:wn,buildTicks:function(){var t=this,e=t.options.ticks,n=t.getTickLimit(),i={maxTicks:n=Math.max(2,n),min:e.min,max:e.max,precision:e.precision,stepSize:V.valueOrDefault(e.fixedStepSize,e.stepSize)},a=t.ticks=function(t,e){var n,i,a,r,o=[],s=t.stepSize,l=s||1,u=t.maxTicks-1,d=t.min,h=t.max,c=t.precision,f=e.min,g=e.max,p=V.niceNum((g-f)/u/l)*l;if(p<1e-14&&Mn(d)&&Mn(h))return[f,g];(r=Math.ceil(g/p)-Math.floor(f/p))>u&&(p=V.niceNum(r*p/u/l)*l),s||Mn(c)?n=Math.pow(10,V._decimalPlaces(p)):(n=Math.pow(10,c),p=Math.ceil(p*n)/n),i=Math.floor(f/p)*p,a=Math.ceil(g/p)*p,s&&(!Mn(d)&&V.almostWhole(d/p,p/1e3)&&(i=d),!Mn(h)&&V.almostWhole(h/p,p/1e3)&&(a=h)),r=(a-i)/p,r=V.almostEquals(r,Math.round(r),p/1e3)?Math.round(r):Math.ceil(r),i=Math.round(i*n)/n,a=Math.round(a*n)/n,o.push(Mn(d)?i:d);for(var m=1;m<r;++m)o.push(Math.round((i+m*p)*n)/n);return o.push(Mn(h)?a:h),o}(i,t);t.handleDirectionalChanges(),t.max=V.max(a),t.min=V.min(a),e.reverse?(a.reverse(),t.start=t.max,t.end=t.min):(t.start=t.min,t.end=t.max)},convertTicksToLabels:function(){var t=this;t.ticksAsNumbers=t.ticks.slice(),t.zeroLineIndex=t.ticks.indexOf(0),xn.prototype.convertTicksToLabels.call(t)},_configure:function(){var t,e=this,n=e.getTicks(),i=e.min,a=e.max;xn.prototype._configure.call(e),e.options.offset&&n.length&&(i-=t=(a-i)/Math.max(n.length-1,1)/2,a+=t),e._startValue=i,e._endValue=a,e._valueRange=a-i}}),Cn={position:"left",ticks:{callback:rn.formatters.linear}};function Pn(t,e,n,i){var a,r,o=t.options,s=function(t,e,n){var i=[n.type,void 0===e&&void 0===n.stack?n.index:"",n.stack].join(".");return void 0===t[i]&&(t[i]={pos:[],neg:[]}),t[i]}(e,o.stacked,n),l=s.pos,u=s.neg,d=i.length;for(a=0;a<d;++a)r=t._parseValue(i[a]),isNaN(r.min)||isNaN(r.max)||n.data[a].hidden||(l[a]=l[a]||0,u[a]=u[a]||0,o.relativePoints?l[a]=100:r.min<0||r.max<0?u[a]+=r.min:l[a]+=r.max)}function An(t,e,n){var i,a,r=n.length;for(i=0;i<r;++i)a=t._parseValue(n[i]),isNaN(a.min)||isNaN(a.max)||e.data[i].hidden||(t.min=Math.min(t.min,a.min),t.max=Math.max(t.max,a.max))}var Dn=Sn.extend({determineDataLimits:function(){var t,e,n,i,a=this,r=a.options,o=a.chart.data.datasets,s=a._getMatchingVisibleMetas(),l=r.stacked,u={},d=s.length;if(a.min=Number.POSITIVE_INFINITY,a.max=Number.NEGATIVE_INFINITY,void 0===l)for(t=0;!l&&t<d;++t)l=void 0!==(e=s[t]).stack;for(t=0;t<d;++t)n=o[(e=s[t]).index].data,l?Pn(a,u,e,n):An(a,e,n);V.each(u,(function(t){i=t.pos.concat(t.neg),a.min=Math.min(a.min,V.min(i)),a.max=Math.max(a.max,V.max(i))})),a.min=V.isFinite(a.min)&&!isNaN(a.min)?a.min:0,a.max=V.isFinite(a.max)&&!isNaN(a.max)?a.max:1,a.handleTickRangeOptions()},_computeTickLimit:function(){var t;return this.isHorizontal()?Math.ceil(this.width/40):(t=V.options._parseFont(this.options.ticks),Math.ceil(this.height/t.lineHeight))},handleDirectionalChanges:function(){this.isHorizontal()||this.ticks.reverse()},getLabelForIndex:function(t,e){return this._getScaleLabel(this.chart.data.datasets[e].data[t])},getPixelForValue:function(t){return this.getPixelForDecimal((+this.getRightValue(t)-this._startValue)/this._valueRange)},getValueForPixel:function(t){return this._startValue+this.getDecimalForPixel(t)*this._valueRange},getPixelForTick:function(t){var e=this.ticksAsNumbers;return t<0||t>e.length-1?null:this.getPixelForValue(e[t])}}),Tn=Cn;Dn._defaults=Tn;var In=V.valueOrDefault,Fn=V.math.log10;var Ln={position:"left",ticks:{callback:rn.formatters.logarithmic}};function On(t,e){return V.isFinite(t)&&t>=0?t:e}var Rn=xn.extend({determineDataLimits:function(){var t,e,n,i,a,r,o=this,s=o.options,l=o.chart,u=l.data.datasets,d=o.isHorizontal();function h(t){return d?t.xAxisID===o.id:t.yAxisID===o.id}o.min=Number.POSITIVE_INFINITY,o.max=Number.NEGATIVE_INFINITY,o.minNotZero=Number.POSITIVE_INFINITY;var c=s.stacked;if(void 0===c)for(t=0;t<u.length;t++)if(e=l.getDatasetMeta(t),l.isDatasetVisible(t)&&h(e)&&void 0!==e.stack){c=!0;break}if(s.stacked||c){var f={};for(t=0;t<u.length;t++){var g=[(e=l.getDatasetMeta(t)).type,void 0===s.stacked&&void 0===e.stack?t:"",e.stack].join(".");if(l.isDatasetVisible(t)&&h(e))for(void 0===f[g]&&(f[g]=[]),a=0,r=(i=u[t].data).length;a<r;a++){var p=f[g];n=o._parseValue(i[a]),isNaN(n.min)||isNaN(n.max)||e.data[a].hidden||n.min<0||n.max<0||(p[a]=p[a]||0,p[a]+=n.max)}}V.each(f,(function(t){if(t.length>0){var e=V.min(t),n=V.max(t);o.min=Math.min(o.min,e),o.max=Math.max(o.max,n)}}))}else for(t=0;t<u.length;t++)if(e=l.getDatasetMeta(t),l.isDatasetVisible(t)&&h(e))for(a=0,r=(i=u[t].data).length;a<r;a++)n=o._parseValue(i[a]),isNaN(n.min)||isNaN(n.max)||e.data[a].hidden||n.min<0||n.max<0||(o.min=Math.min(n.min,o.min),o.max=Math.max(n.max,o.max),0!==n.min&&(o.minNotZero=Math.min(n.min,o.minNotZero)));o.min=V.isFinite(o.min)?o.min:null,o.max=V.isFinite(o.max)?o.max:null,o.minNotZero=V.isFinite(o.minNotZero)?o.minNotZero:null,this.handleTickRangeOptions()},handleTickRangeOptions:function(){var t=this,e=t.options.ticks;t.min=On(e.min,t.min),t.max=On(e.max,t.max),t.min===t.max&&(0!==t.min&&null!==t.min?(t.min=Math.pow(10,Math.floor(Fn(t.min))-1),t.max=Math.pow(10,Math.floor(Fn(t.max))+1)):(t.min=1,t.max=10)),null===t.min&&(t.min=Math.pow(10,Math.floor(Fn(t.max))-1)),null===t.max&&(t.max=0!==t.min?Math.pow(10,Math.floor(Fn(t.min))+1):10),null===t.minNotZero&&(t.min>0?t.minNotZero=t.min:t.max<1?t.minNotZero=Math.pow(10,Math.floor(Fn(t.max))):t.minNotZero=1)},buildTicks:function(){var t=this,e=t.options.ticks,n=!t.isHorizontal(),i={min:On(e.min),max:On(e.max)},a=t.ticks=function(t,e){var n,i,a=[],r=In(t.min,Math.pow(10,Math.floor(Fn(e.min)))),o=Math.floor(Fn(e.max)),s=Math.ceil(e.max/Math.pow(10,o));0===r?(n=Math.floor(Fn(e.minNotZero)),i=Math.floor(e.minNotZero/Math.pow(10,n)),a.push(r),r=i*Math.pow(10,n)):(n=Math.floor(Fn(r)),i=Math.floor(r/Math.pow(10,n)));var l=n<0?Math.pow(10,Math.abs(n)):1;do{a.push(r),10===++i&&(i=1,l=++n>=0?1:l),r=Math.round(i*Math.pow(10,n)*l)/l}while(n<o||n===o&&i<s);var u=In(t.max,r);return a.push(u),a}(i,t);t.max=V.max(a),t.min=V.min(a),e.reverse?(n=!n,t.start=t.max,t.end=t.min):(t.start=t.min,t.end=t.max),n&&a.reverse()},convertTicksToLabels:function(){this.tickValues=this.ticks.slice(),xn.prototype.convertTicksToLabels.call(this)},getLabelForIndex:function(t,e){return this._getScaleLabel(this.chart.data.datasets[e].data[t])},getPixelForTick:function(t){var e=this.tickValues;return t<0||t>e.length-1?null:this.getPixelForValue(e[t])},_getFirstTickValue:function(t){var e=Math.floor(Fn(t));return Math.floor(t/Math.pow(10,e))*Math.pow(10,e)},_configure:function(){var t=this,e=t.min,n=0;xn.prototype._configure.call(t),0===e&&(e=t._getFirstTickValue(t.minNotZero),n=In(t.options.ticks.fontSize,z.global.defaultFontSize)/t._length),t._startValue=Fn(e),t._valueOffset=n,t._valueRange=(Fn(t.max)-Fn(e))/(1-n)},getPixelForValue:function(t){var e=this,n=0;return(t=+e.getRightValue(t))>e.min&&t>0&&(n=(Fn(t)-e._startValue)/e._valueRange+e._valueOffset),e.getPixelForDecimal(n)},getValueForPixel:function(t){var e=this,n=e.getDecimalForPixel(t);return 0===n&&0===e.min?0:Math.pow(10,e._startValue+(n-e._valueOffset)*e._valueRange)}}),zn=Ln;Rn._defaults=zn;var Nn=V.valueOrDefault,Bn=V.valueAtIndexOrDefault,En=V.options.resolve,Wn={display:!0,animate:!0,position:"chartArea",angleLines:{display:!0,color:"rgba(0,0,0,0.1)",lineWidth:1,borderDash:[],borderDashOffset:0},gridLines:{circular:!1},ticks:{showLabelBackdrop:!0,backdropColor:"rgba(255,255,255,0.75)",backdropPaddingY:2,backdropPaddingX:2,callback:rn.formatters.linear},pointLabels:{display:!0,fontSize:10,callback:function(t){return t}}};function Vn(t){var e=t.ticks;return e.display&&t.display?Nn(e.fontSize,z.global.defaultFontSize)+2*e.backdropPaddingY:0}function Hn(t,e,n,i,a){return t===i||t===a?{start:e-n/2,end:e+n/2}:t<i||t>a?{start:e-n,end:e}:{start:e,end:e+n}}function jn(t){return 0===t||180===t?"center":t<180?"left":"right"}function qn(t,e,n,i){var a,r,o=n.y+i/2;if(V.isArray(e))for(a=0,r=e.length;a<r;++a)t.fillText(e[a],n.x,o),o+=i;else t.fillText(e,n.x,o)}function Un(t,e,n){90===t||270===t?n.y-=e.h/2:(t>270||t<90)&&(n.y-=e.h)}function Yn(t){return V.isNumber(t)?t:0}var Gn=Sn.extend({setDimensions:function(){var t=this;t.width=t.maxWidth,t.height=t.maxHeight,t.paddingTop=Vn(t.options)/2,t.xCenter=Math.floor(t.width/2),t.yCenter=Math.floor((t.height-t.paddingTop)/2),t.drawingArea=Math.min(t.height-t.paddingTop,t.width)/2},determineDataLimits:function(){var t=this,e=t.chart,n=Number.POSITIVE_INFINITY,i=Number.NEGATIVE_INFINITY;V.each(e.data.datasets,(function(a,r){if(e.isDatasetVisible(r)){var o=e.getDatasetMeta(r);V.each(a.data,(function(e,a){var r=+t.getRightValue(e);isNaN(r)||o.data[a].hidden||(n=Math.min(r,n),i=Math.max(r,i))}))}})),t.min=n===Number.POSITIVE_INFINITY?0:n,t.max=i===Number.NEGATIVE_INFINITY?0:i,t.handleTickRangeOptions()},_computeTickLimit:function(){return Math.ceil(this.drawingArea/Vn(this.options))},convertTicksToLabels:function(){var t=this;Sn.prototype.convertTicksToLabels.call(t),t.pointLabels=t.chart.data.labels.map((function(){var e=V.callback(t.options.pointLabels.callback,arguments,t);return e||0===e?e:""}))},getLabelForIndex:function(t,e){return+this.getRightValue(this.chart.data.datasets[e].data[t])},fit:function(){var t=this.options;t.display&&t.pointLabels.display?function(t){var e,n,i,a=V.options._parseFont(t.options.pointLabels),r={l:0,r:t.width,t:0,b:t.height-t.paddingTop},o={};t.ctx.font=a.string,t._pointLabelSizes=[];var s,l,u,d=t.chart.data.labels.length;for(e=0;e<d;e++){i=t.getPointPosition(e,t.drawingArea+5),s=t.ctx,l=a.lineHeight,u=t.pointLabels[e],n=V.isArray(u)?{w:V.longestText(s,s.font,u),h:u.length*l}:{w:s.measureText(u).width,h:l},t._pointLabelSizes[e]=n;var h=t.getIndexAngle(e),c=V.toDegrees(h)%360,f=Hn(c,i.x,n.w,0,180),g=Hn(c,i.y,n.h,90,270);f.start<r.l&&(r.l=f.start,o.l=h),f.end>r.r&&(r.r=f.end,o.r=h),g.start<r.t&&(r.t=g.start,o.t=h),g.end>r.b&&(r.b=g.end,o.b=h)}t.setReductions(t.drawingArea,r,o)}(this):this.setCenterPoint(0,0,0,0)},setReductions:function(t,e,n){var i=this,a=e.l/Math.sin(n.l),r=Math.max(e.r-i.width,0)/Math.sin(n.r),o=-e.t/Math.cos(n.t),s=-Math.max(e.b-(i.height-i.paddingTop),0)/Math.cos(n.b);a=Yn(a),r=Yn(r),o=Yn(o),s=Yn(s),i.drawingArea=Math.min(Math.floor(t-(a+r)/2),Math.floor(t-(o+s)/2)),i.setCenterPoint(a,r,o,s)},setCenterPoint:function(t,e,n,i){var a=this,r=a.width-e-a.drawingArea,o=t+a.drawingArea,s=n+a.drawingArea,l=a.height-a.paddingTop-i-a.drawingArea;a.xCenter=Math.floor((o+r)/2+a.left),a.yCenter=Math.floor((s+l)/2+a.top+a.paddingTop)},getIndexAngle:function(t){var e=this.chart,n=(t*(360/e.data.labels.length)+((e.options||{}).startAngle||0))%360;return(n<0?n+360:n)*Math.PI*2/360},getDistanceFromCenterForValue:function(t){var e=this;if(V.isNullOrUndef(t))return NaN;var n=e.drawingArea/(e.max-e.min);return e.options.ticks.reverse?(e.max-t)*n:(t-e.min)*n},getPointPosition:function(t,e){var 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window&&(window.Chart=tn),tn.Chart=tn,tn.Legend=Li.legend._element,tn.Title=Li.title._element,tn.pluginService=tn.plugins,tn.PluginBase=tn.Element.extend({}),tn.canvasHelpers=tn.helpers.canvas,tn.layoutService=tn.layouts,tn.LinearScaleBase=Sn,tn.helpers.each(["Bar","Bubble","Doughnut","Line","PolarArea","Radar","Scatter"],(function(t){tn[t]=function(e,n){return new tn(e,tn.helpers.merge(n||{},{type:t.charAt(0).toLowerCase()+t.slice(1)}))}})),Bi})); diff --git a/layerindex/static/js/Chart-2.9.3.js b/layerindex/static/js/Chart-2.9.4.js similarity index 96% rename from layerindex/static/js/Chart-2.9.3.js rename to layerindex/static/js/Chart-2.9.4.js index e8d937c..7a1a28d 100644 --- a/layerindex/static/js/Chart-2.9.3.js +++ b/layerindex/static/js/Chart-2.9.4.js @@ -1,7 +1,7 @@ /*! - * Chart.js v2.9.3 + * Chart.js v2.9.4 * https://www.chartjs.org - * (c) 2019 Chart.js Contributors + * (c) 2020 Chart.js Contributors * Released under the MIT License */ (function (global, factory) { @@ -2103,14047 +2103,14068 @@ if (typeof window !== 'undefined') { var chartjsColor = Color; -/** - * @namespace Chart.helpers - */ -var helpers = { - /** - * An empty function that can be used, for example, for optional callback. - */ - noop: function() {}, - - /** - * Returns a unique id, sequentially generated from a global variable. - * @returns {number} - * @function - */ - uid: (function() { - var id = 0; - return function() { - return id++; - }; - }()), - - /** - * Returns true if `value` is neither null nor undefined, else returns false. - * @param {*} value - The value to test. - * @returns {boolean} - * @since 2.7.0 - */ - isNullOrUndef: function(value) { - return value === null || typeof value === 'undefined'; - }, - - /** - * Returns true if `value` is an array (including typed arrays), else returns false. - * @param {*} value - The value to test. - * @returns {boolean} - * @function - */ - isArray: function(value) { - if (Array.isArray && Array.isArray(value)) { - return true; - } - var type = Object.prototype.toString.call(value); - if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') { - return true; - } - return false; - }, - - /** - * Returns true if `value` is an object (excluding null), else returns false. - * @param {*} value - The value to test. - * @returns {boolean} - * @since 2.7.0 - */ - isObject: function(value) { - return value !== null && Object.prototype.toString.call(value) === '[object Object]'; - }, - - /** - * Returns true if `value` is a finite number, else returns false - * @param {*} value - The value to test. - * @returns {boolean} - */ - isFinite: function(value) { - return (typeof value === 'number' || value instanceof Number) && isFinite(value); - }, - - /** - * Returns `value` if defined, else returns `defaultValue`. - * @param {*} value - The value to return if defined. - * @param {*} defaultValue - The value to return if `value` is undefined. - * @returns {*} - */ - valueOrDefault: function(value, defaultValue) { - return typeof value === 'undefined' ? defaultValue : value; - }, - - /** - * Returns value at the given `index` in array if defined, else returns `defaultValue`. - * @param {Array} value - The array to lookup for value at `index`. - * @param {number} index - The index in `value` to lookup for value. - * @param {*} defaultValue - The value to return if `value[index]` is undefined. - * @returns {*} - */ - valueAtIndexOrDefault: function(value, index, defaultValue) { - return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue); - }, - - /** - * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the - * value returned by `fn`. If `fn` is not a function, this method returns undefined. - * @param {function} fn - The function to call. - * @param {Array|undefined|null} args - The arguments with which `fn` should be called. - * @param {object} [thisArg] - The value of `this` provided for the call to `fn`. - * @returns {*} - */ - callback: function(fn, args, thisArg) { - if (fn && typeof fn.call === 'function') { - return fn.apply(thisArg, args); - } - }, - - /** - * Note(SB) for performance sake, this method should only be used when loopable type - * is unknown or in none intensive code (not called often and small loopable). Else - * it's preferable to use a regular for() loop and save extra function calls. - * @param {object|Array} loopable - The object or array to be iterated. - * @param {function} fn - The function to call for each item. - * @param {object} [thisArg] - The value of `this` provided for the call to `fn`. - * @param {boolean} [reverse] - If true, iterates backward on the loopable. - */ - each: function(loopable, fn, thisArg, reverse) { - var i, len, keys; - if (helpers.isArray(loopable)) { - len = loopable.length; - if (reverse) { - for (i = len - 1; i >= 0; i--) { - fn.call(thisArg, loopable[i], i); - } - } else { - for (i = 0; i < len; i++) { - fn.call(thisArg, loopable[i], i); - } - } - } else if (helpers.isObject(loopable)) { - keys = Object.keys(loopable); - len = keys.length; - for (i = 0; i < len; i++) { - fn.call(thisArg, loopable[keys[i]], keys[i]); - } - } - }, - - /** - * Returns true if the `a0` and `a1` arrays have the same content, else returns false. - * @see https://stackoverflow.com/a/14853974 - * @param {Array} a0 - The array to compare - * @param {Array} a1 - The array to compare - * @returns {boolean} - */ - arrayEquals: function(a0, a1) { - var i, ilen, v0, v1; - - if (!a0 || !a1 || a0.length !== a1.length) { - return false; - } - - for (i = 0, ilen = a0.length; i < ilen; ++i) { - v0 = a0[i]; - v1 = a1[i]; - - if (v0 instanceof Array && v1 instanceof Array) { - if (!helpers.arrayEquals(v0, v1)) { - return false; - } - } else if (v0 !== v1) { - // NOTE: two different object instances will never be equal: {x:20} != {x:20} - return false; - } - } - - return true; - }, - - /** - * Returns a deep copy of `source` without keeping references on objects and arrays. - * @param {*} source - The value to clone. - * @returns {*} - */ - clone: function(source) { - if (helpers.isArray(source)) { - return source.map(helpers.clone); - } - - if (helpers.isObject(source)) { - var target = {}; - var keys = Object.keys(source); - var klen = keys.length; - var k = 0; - - for (; k < klen; ++k) { - target[keys[k]] = helpers.clone(source[keys[k]]); - } - - return target; - } - - return source; - }, - - /** - * The default merger when Chart.helpers.merge is called without merger option. - * Note(SB): also used by mergeConfig and mergeScaleConfig as fallback. - * @private - */ - _merger: function(key, target, source, options) { - var tval = target[key]; - var sval = source[key]; - - if (helpers.isObject(tval) && helpers.isObject(sval)) { - helpers.merge(tval, sval, options); - } else { - target[key] = helpers.clone(sval); - } - }, - - /** - * Merges source[key] in target[key] only if target[key] is undefined. - * @private - */ - _mergerIf: function(key, target, source) { - var tval = target[key]; - var sval = source[key]; - - if (helpers.isObject(tval) && helpers.isObject(sval)) { - helpers.mergeIf(tval, sval); - } else if (!target.hasOwnProperty(key)) { - target[key] = helpers.clone(sval); - } - }, - - /** - * Recursively deep copies `source` properties into `target` with the given `options`. - * IMPORTANT: `target` is not cloned and will be updated with `source` properties. - * @param {object} target - The target object in which all sources are merged into. - * @param {object|object[]} source - Object(s) to merge into `target`. - * @param {object} [options] - Merging options: - * @param {function} [options.merger] - The merge method (key, target, source, options) - * @returns {object} The `target` object. - */ - merge: function(target, source, options) { - var sources = helpers.isArray(source) ? source : [source]; - var ilen = sources.length; - var merge, i, keys, klen, k; - - if (!helpers.isObject(target)) { - return target; - } - - options = options || {}; - merge = options.merger || helpers._merger; - - for (i = 0; i < ilen; ++i) { - source = sources[i]; - if (!helpers.isObject(source)) { - continue; - } - - keys = Object.keys(source); - for (k = 0, klen = keys.length; k < klen; ++k) { - merge(keys[k], target, source, options); - } - } - - return target; - }, - - /** - * Recursively deep copies `source` properties into `target` *only* if not defined in target. - * IMPORTANT: `target` is not cloned and will be updated with `source` properties. - * @param {object} target - The target object in which all sources are merged into. - * @param {object|object[]} source - Object(s) to merge into `target`. - * @returns {object} The `target` object. - */ - mergeIf: function(target, source) { - return helpers.merge(target, source, {merger: helpers._mergerIf}); - }, - - /** - * Applies the contents of two or more objects together into the first object. - * @param {object} target - The target object in which all objects are merged into. - * @param {object} arg1 - Object containing additional properties to merge in target. - * @param {object} argN - Additional objects containing properties to merge in target. - * @returns {object} The `target` object. - */ - extend: Object.assign || function(target) { - return helpers.merge(target, [].slice.call(arguments, 1), { - merger: function(key, dst, src) { - dst[key] = src[key]; - } - }); - }, - - /** - * Basic javascript inheritance based on the model created in Backbone.js - */ - inherits: function(extensions) { - var me = this; - var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() { - return me.apply(this, arguments); - }; - - var Surrogate = function() { - this.constructor = ChartElement; - }; - - Surrogate.prototype = me.prototype; - ChartElement.prototype = new Surrogate(); - ChartElement.extend = helpers.inherits; - - if (extensions) { - helpers.extend(ChartElement.prototype, extensions); - } - - ChartElement.__super__ = me.prototype; - return ChartElement; - }, - - _deprecated: function(scope, value, previous, current) { - if (value !== undefined) { - console.warn(scope + ': "' + previous + - '" is deprecated. Please use "' + current + '" instead'); - } - } -}; - -var helpers_core = helpers; - -// DEPRECATIONS - -/** - * Provided for backward compatibility, use Chart.helpers.callback instead. - * @function Chart.helpers.callCallback - * @deprecated since version 2.6.0 - * @todo remove at version 3 - * @private - */ -helpers.callCallback = helpers.callback; - -/** - * Provided for backward compatibility, use Array.prototype.indexOf instead. - * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+ - * @function Chart.helpers.indexOf - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers.indexOf = function(array, item, fromIndex) { - return Array.prototype.indexOf.call(array, item, fromIndex); -}; - -/** - * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead. - * @function Chart.helpers.getValueOrDefault - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers.getValueOrDefault = helpers.valueOrDefault; - -/** - * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead. - * @function Chart.helpers.getValueAtIndexOrDefault - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault; - -/** - * Easing functions adapted from Robert Penner's easing equations. - * @namespace Chart.helpers.easingEffects - * @see http://www.robertpenner.com/easing/ - */ -var effects = { - linear: function(t) { - return t; - }, - - easeInQuad: function(t) { - return t * t; - }, - - easeOutQuad: function(t) { - return -t * (t - 2); - }, - - easeInOutQuad: function(t) { - if ((t /= 0.5) < 1) { - return 0.5 * t * t; - } - return -0.5 * ((--t) * (t - 2) - 1); - }, - - easeInCubic: function(t) { - return t * t * t; - }, - - easeOutCubic: function(t) { - return (t = t - 1) * t * t + 1; - }, - - easeInOutCubic: function(t) { - if ((t /= 0.5) < 1) { - return 0.5 * t * t * t; - } - return 0.5 * ((t -= 2) * t * t + 2); - }, - - easeInQuart: function(t) { - return t * t * t * t; - }, - - easeOutQuart: function(t) { - return -((t = t - 1) * t * t * t - 1); - }, - - easeInOutQuart: function(t) { - if ((t /= 0.5) < 1) { - return 0.5 * t * t * t * t; - } - return -0.5 * ((t -= 2) * t * t * t - 2); - }, - - easeInQuint: function(t) { - return t * t * t * t * t; - }, - - easeOutQuint: function(t) { - return (t = t - 1) * t * t * t * t + 1; - }, - - easeInOutQuint: function(t) { - if ((t /= 0.5) < 1) { - return 0.5 * t * t * t * t * t; - } - return 0.5 * ((t -= 2) * t * t * t * t + 2); - }, - - easeInSine: function(t) { - return -Math.cos(t * (Math.PI / 2)) + 1; - }, - - easeOutSine: function(t) { - return Math.sin(t * (Math.PI / 2)); - }, - - easeInOutSine: function(t) { - return -0.5 * (Math.cos(Math.PI * t) - 1); - }, - - easeInExpo: function(t) { - return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1)); - }, - - easeOutExpo: function(t) { - return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1; - }, - - easeInOutExpo: function(t) { - if (t === 0) { - return 0; - } - if (t === 1) { - return 1; - } - if ((t /= 0.5) < 1) { - return 0.5 * Math.pow(2, 10 * (t - 1)); - } - return 0.5 * (-Math.pow(2, -10 * --t) + 2); - }, - - easeInCirc: function(t) { - if (t >= 1) { - return t; - } - return -(Math.sqrt(1 - t * t) - 1); - }, - - easeOutCirc: function(t) { - return Math.sqrt(1 - (t = t - 1) * t); - }, - - easeInOutCirc: function(t) { - if ((t /= 0.5) < 1) { - return -0.5 * (Math.sqrt(1 - t * t) - 1); - } - return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1); - }, - - easeInElastic: function(t) { - var s = 1.70158; - var p = 0; - var a = 1; - if (t === 0) { - return 0; - } - if (t === 1) { - return 1; - } - if (!p) { - p = 0.3; - } - if (a < 1) { - a = 1; - s = p / 4; - } else { - s = p / (2 * Math.PI) * Math.asin(1 / a); - } - return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p)); - }, - - easeOutElastic: function(t) { - var s = 1.70158; - var p = 0; - var a = 1; - if (t === 0) { - return 0; - } - if (t === 1) { - return 1; - } - if (!p) { - p = 0.3; - } - if (a < 1) { - a = 1; - s = p / 4; - } else { - s = p / (2 * Math.PI) * Math.asin(1 / a); - } - return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1; - }, - - easeInOutElastic: function(t) { - var s = 1.70158; - var p = 0; - var a = 1; - if (t === 0) { - return 0; - } - if ((t /= 0.5) === 2) { - return 1; - } - if (!p) { - p = 0.45; - } - if (a < 1) { - a = 1; - s = p / 4; - } else { - s = p / (2 * Math.PI) * Math.asin(1 / a); - } - if (t < 1) { - return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p)); - } - return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1; - }, - easeInBack: function(t) { - var s = 1.70158; - return t * t * ((s + 1) * t - s); - }, - - easeOutBack: function(t) { - var s = 1.70158; - return (t = t - 1) * t * ((s + 1) * t + s) + 1; - }, - - easeInOutBack: function(t) { - var s = 1.70158; - if ((t /= 0.5) < 1) { - return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s)); - } - return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2); - }, - - easeInBounce: function(t) { - return 1 - effects.easeOutBounce(1 - t); - }, - - easeOutBounce: function(t) { - if (t < (1 / 2.75)) { - return 7.5625 * t * t; - } - if (t < (2 / 2.75)) { - return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75; - } - if (t < (2.5 / 2.75)) { - return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375; - } - return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375; - }, - - easeInOutBounce: function(t) { - if (t < 0.5) { - return effects.easeInBounce(t * 2) * 0.5; - } - return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5; - } -}; - -var helpers_easing = { - effects: effects -}; - -// DEPRECATIONS - -/** - * Provided for backward compatibility, use Chart.helpers.easing.effects instead. - * @function Chart.helpers.easingEffects - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers_core.easingEffects = effects; - -var PI = Math.PI; -var RAD_PER_DEG = PI / 180; -var DOUBLE_PI = PI * 2; -var HALF_PI = PI / 2; -var QUARTER_PI = PI / 4; -var TWO_THIRDS_PI = PI * 2 / 3; - -/** - * @namespace Chart.helpers.canvas - */ -var exports$1 = { - /** - * Clears the entire canvas associated to the given `chart`. - * @param {Chart} chart - The chart for which to clear the canvas. - */ - clear: function(chart) { - chart.ctx.clearRect(0, 0, chart.width, chart.height); - }, - - /** - * Creates a "path" for a rectangle with rounded corners at position (x, y) with a - * given size (width, height) and the same `radius` for all corners. - * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context. - * @param {number} x - The x axis of the coordinate for the rectangle starting point. - * @param {number} y - The y axis of the coordinate for the rectangle starting point. - * @param {number} width - The rectangle's width. - * @param {number} height - The rectangle's height. - * @param {number} radius - The rounded amount (in pixels) for the four corners. - * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object? - */ - roundedRect: function(ctx, x, y, width, height, radius) { - if (radius) { - var r = Math.min(radius, height / 2, width / 2); - var left = x + r; - var top = y + r; - var right = x + width - r; - var bottom = y + height - r; - - ctx.moveTo(x, top); - if (left < right && top < bottom) { - ctx.arc(left, top, r, -PI, -HALF_PI); - ctx.arc(right, top, r, -HALF_PI, 0); - ctx.arc(right, bottom, r, 0, HALF_PI); - ctx.arc(left, bottom, r, HALF_PI, PI); - } else if (left < right) { - ctx.moveTo(left, y); - ctx.arc(right, top, r, -HALF_PI, HALF_PI); - ctx.arc(left, top, r, HALF_PI, PI + HALF_PI); - } else if (top < bottom) { - ctx.arc(left, top, r, -PI, 0); - ctx.arc(left, bottom, r, 0, PI); - } else { - ctx.arc(left, top, r, -PI, PI); - } - ctx.closePath(); - ctx.moveTo(x, y); - } else { - ctx.rect(x, y, width, height); - } - }, - - drawPoint: function(ctx, style, radius, x, y, rotation) { - var type, xOffset, yOffset, size, cornerRadius; - var rad = (rotation || 0) * RAD_PER_DEG; - - if (style && typeof style === 'object') { - type = style.toString(); - if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') { - ctx.save(); - ctx.translate(x, y); - ctx.rotate(rad); - ctx.drawImage(style, -style.width / 2, -style.height / 2, style.width, style.height); - ctx.restore(); - return; - } - } - - if (isNaN(radius) || radius <= 0) { - return; - } - - ctx.beginPath(); - - switch (style) { - // Default includes circle - default: - ctx.arc(x, y, radius, 0, DOUBLE_PI); - ctx.closePath(); - break; - case 'triangle': - ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); - rad += TWO_THIRDS_PI; - ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); - rad += TWO_THIRDS_PI; - ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); - ctx.closePath(); - break; - case 'rectRounded': - // NOTE: the rounded rect implementation changed to use `arc` instead of - // `quadraticCurveTo` since it generates better results when rect is - // almost a circle. 0.516 (instead of 0.5) produces results with visually - // closer proportion to the previous impl and it is inscribed in the - // circle with `radius`. For more details, see the following PRs: - // https://github.com/chartjs/Chart.js/issues/5597 - // https://github.com/chartjs/Chart.js/issues/5858 - cornerRadius = radius * 0.516; - size = radius - cornerRadius; - xOffset = Math.cos(rad + QUARTER_PI) * size; - yOffset = Math.sin(rad + QUARTER_PI) * size; - ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI); - ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad); - ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI); - ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI); - ctx.closePath(); - break; - case 'rect': - if (!rotation) { - size = Math.SQRT1_2 * radius; - ctx.rect(x - size, y - size, 2 * size, 2 * size); - break; - } - rad += QUARTER_PI; - /* falls through */ - case 'rectRot': - xOffset = Math.cos(rad) * radius; - yOffset = Math.sin(rad) * radius; - ctx.moveTo(x - xOffset, y - yOffset); - ctx.lineTo(x + yOffset, y - xOffset); - ctx.lineTo(x + xOffset, y + yOffset); - ctx.lineTo(x - yOffset, y + xOffset); - ctx.closePath(); - break; - case 'crossRot': - rad += QUARTER_PI; - /* falls through */ - case 'cross': - xOffset = Math.cos(rad) * radius; - yOffset = Math.sin(rad) * radius; - ctx.moveTo(x - xOffset, y - yOffset); - ctx.lineTo(x + xOffset, y + yOffset); - ctx.moveTo(x + yOffset, y - xOffset); - ctx.lineTo(x - yOffset, y + xOffset); - break; - case 'star': - xOffset = Math.cos(rad) * radius; - yOffset = Math.sin(rad) * radius; - ctx.moveTo(x - xOffset, y - yOffset); - ctx.lineTo(x + xOffset, y + yOffset); - ctx.moveTo(x + yOffset, y - xOffset); - ctx.lineTo(x - yOffset, y + xOffset); - rad += QUARTER_PI; - xOffset = Math.cos(rad) * radius; - yOffset = Math.sin(rad) * radius; - ctx.moveTo(x - xOffset, y - yOffset); - ctx.lineTo(x + xOffset, y + yOffset); - ctx.moveTo(x + yOffset, y - xOffset); - ctx.lineTo(x - yOffset, y + xOffset); - break; - case 'line': - xOffset = Math.cos(rad) * radius; - yOffset = Math.sin(rad) * radius; - ctx.moveTo(x - xOffset, y - yOffset); - ctx.lineTo(x + xOffset, y + yOffset); - break; - case 'dash': - ctx.moveTo(x, y); - ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius); - break; - } - - ctx.fill(); - ctx.stroke(); - }, - - /** - * Returns true if the point is inside the rectangle - * @param {object} point - The point to test - * @param {object} area - The rectangle - * @returns {boolean} - * @private - */ - _isPointInArea: function(point, area) { - var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error. - - return point.x > area.left - epsilon && point.x < area.right + epsilon && - point.y > area.top - epsilon && point.y < area.bottom + epsilon; - }, - - clipArea: function(ctx, area) { - ctx.save(); - ctx.beginPath(); - ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top); - ctx.clip(); - }, - - unclipArea: function(ctx) { - ctx.restore(); - }, - - lineTo: function(ctx, previous, target, flip) { - var stepped = target.steppedLine; - if (stepped) { - if (stepped === 'middle') { - var midpoint = (previous.x + target.x) / 2.0; - ctx.lineTo(midpoint, flip ? target.y : previous.y); - ctx.lineTo(midpoint, flip ? previous.y : target.y); - } else if ((stepped === 'after' && !flip) || (stepped !== 'after' && flip)) { - ctx.lineTo(previous.x, target.y); - } else { - ctx.lineTo(target.x, previous.y); - } - ctx.lineTo(target.x, target.y); - return; - } - - if (!target.tension) { - ctx.lineTo(target.x, target.y); - return; - } - - ctx.bezierCurveTo( - flip ? previous.controlPointPreviousX : previous.controlPointNextX, - flip ? previous.controlPointPreviousY : previous.controlPointNextY, - flip ? target.controlPointNextX : target.controlPointPreviousX, - flip ? target.controlPointNextY : target.controlPointPreviousY, - target.x, - target.y); - } -}; - -var helpers_canvas = exports$1; - -// DEPRECATIONS - -/** - * Provided for backward compatibility, use Chart.helpers.canvas.clear instead. - * @namespace Chart.helpers.clear - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers_core.clear = exports$1.clear; - -/** - * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead. - * @namespace Chart.helpers.drawRoundedRectangle - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers_core.drawRoundedRectangle = function(ctx) { - ctx.beginPath(); - exports$1.roundedRect.apply(exports$1, arguments); -}; - -var defaults = { - /** - * @private - */ - _set: function(scope, values) { - return helpers_core.merge(this[scope] || (this[scope] = {}), values); - } -}; - -// TODO(v3): remove 'global' from namespace. all default are global and -// there's inconsistency around which options are under 'global' -defaults._set('global', { - defaultColor: 'rgba(0,0,0,0.1)', - defaultFontColor: '#666', - defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif", - defaultFontSize: 12, - defaultFontStyle: 'normal', - defaultLineHeight: 1.2, - showLines: true -}); - -var core_defaults = defaults; - -var valueOrDefault = helpers_core.valueOrDefault; - -/** - * Converts the given font object into a CSS font string. - * @param {object} font - A font object. - * @return {string} The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font - * @private - */ -function toFontString(font) { - if (!font || helpers_core.isNullOrUndef(font.size) || helpers_core.isNullOrUndef(font.family)) { - return null; - } - - return (font.style ? font.style + ' ' : '') - + (font.weight ? font.weight + ' ' : '') - + font.size + 'px ' - + font.family; -} - -/** - * @alias Chart.helpers.options - * @namespace - */ -var helpers_options = { - /** - * Converts the given line height `value` in pixels for a specific font `size`. - * @param {number|string} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em'). - * @param {number} size - The font size (in pixels) used to resolve relative `value`. - * @returns {number} The effective line height in pixels (size * 1.2 if value is invalid). - * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height - * @since 2.7.0 - */ - toLineHeight: function(value, size) { - var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/); - if (!matches || matches[1] === 'normal') { - return size * 1.2; - } - - value = +matches[2]; - - switch (matches[3]) { - case 'px': - return value; - case '%': - value /= 100; - break; - } - - return size * value; - }, - - /** - * Converts the given value into a padding object with pre-computed width/height. - * @param {number|object} value - If a number, set the value to all TRBL component, - * else, if and object, use defined properties and sets undefined ones to 0. - * @returns {object} The padding values (top, right, bottom, left, width, height) - * @since 2.7.0 - */ - toPadding: function(value) { - var t, r, b, l; - - if (helpers_core.isObject(value)) { - t = +value.top || 0; - r = +value.right || 0; - b = +value.bottom || 0; - l = +value.left || 0; - } else { - t = r = b = l = +value || 0; - } - - return { - top: t, - right: r, - bottom: b, - left: l, - height: t + b, - width: l + r - }; - }, - - /** - * Parses font options and returns the font object. - * @param {object} options - A object that contains font options to be parsed. - * @return {object} The font object. - * @todo Support font.* options and renamed to toFont(). - * @private - */ - _parseFont: function(options) { - var globalDefaults = core_defaults.global; - var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize); - var font = { - family: valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily), - lineHeight: helpers_core.options.toLineHeight(valueOrDefault(options.lineHeight, globalDefaults.defaultLineHeight), size), - size: size, - style: valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle), - weight: null, - string: '' - }; - - font.string = toFontString(font); - return font; - }, - - /** - * Evaluates the given `inputs` sequentially and returns the first defined value. - * @param {Array} inputs - An array of values, falling back to the last value. - * @param {object} [context] - If defined and the current value is a function, the value - * is called with `context` as first argument and the result becomes the new input. - * @param {number} [index] - If defined and the current value is an array, the value - * at `index` become the new input. - * @param {object} [info] - object to return information about resolution in - * @param {boolean} [info.cacheable] - Will be set to `false` if option is not cacheable. - * @since 2.7.0 - */ - resolve: function(inputs, context, index, info) { - var cacheable = true; - var i, ilen, value; - - for (i = 0, ilen = inputs.length; i < ilen; ++i) { - value = inputs[i]; - if (value === undefined) { - continue; - } - if (context !== undefined && typeof value === 'function') { - value = value(context); - cacheable = false; - } - if (index !== undefined && helpers_core.isArray(value)) { - value = value[index]; - cacheable = false; - } - if (value !== undefined) { - if (info && !cacheable) { - info.cacheable = false; - } - return value; - } - } - } -}; - -/** - * @alias Chart.helpers.math - * @namespace - */ -var exports$2 = { - /** - * Returns an array of factors sorted from 1 to sqrt(value) - * @private - */ - _factorize: function(value) { - var result = []; - var sqrt = Math.sqrt(value); - var i; - - for (i = 1; i < sqrt; i++) { - if (value % i === 0) { - result.push(i); - result.push(value / i); - } - } - if (sqrt === (sqrt | 0)) { // if value is a square number - result.push(sqrt); - } - - result.sort(function(a, b) { - return a - b; - }).pop(); - return result; - }, - - log10: Math.log10 || function(x) { - var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10. - // Check for whole powers of 10, - // which due to floating point rounding error should be corrected. - var powerOf10 = Math.round(exponent); - var isPowerOf10 = x === Math.pow(10, powerOf10); - - return isPowerOf10 ? powerOf10 : exponent; - } -}; - -var helpers_math = exports$2; - -// DEPRECATIONS - -/** - * Provided for backward compatibility, use Chart.helpers.math.log10 instead. - * @namespace Chart.helpers.log10 - * @deprecated since version 2.9.0 - * @todo remove at version 3 - * @private - */ -helpers_core.log10 = exports$2.log10; - -var getRtlAdapter = function(rectX, width) { - return { - x: function(x) { - return rectX + rectX + width - x; - }, - setWidth: function(w) { - width = w; - }, - textAlign: function(align) { - if (align === 'center') { - return align; - } - return align === 'right' ? 'left' : 'right'; - }, - xPlus: function(x, value) { - return x - value; - }, - leftForLtr: function(x, itemWidth) { - return x - itemWidth; - }, - }; -}; - -var getLtrAdapter = function() { - return { - x: function(x) { - return x; - }, - setWidth: function(w) { // eslint-disable-line no-unused-vars - }, - textAlign: function(align) { - return align; - }, - xPlus: function(x, value) { - return x + value; - }, - leftForLtr: function(x, _itemWidth) { // eslint-disable-line no-unused-vars - return x; - }, - }; -}; - -var getAdapter = function(rtl, rectX, width) { - return rtl ? getRtlAdapter(rectX, width) : getLtrAdapter(); -}; - -var overrideTextDirection = function(ctx, direction) { - var style, original; - if (direction === 'ltr' || direction === 'rtl') { - style = ctx.canvas.style; - original = [ - style.getPropertyValue('direction'), - style.getPropertyPriority('direction'), - ]; - - style.setProperty('direction', direction, 'important'); - ctx.prevTextDirection = original; - } -}; - -var restoreTextDirection = function(ctx) { - var original = ctx.prevTextDirection; - if (original !== undefined) { - delete ctx.prevTextDirection; - ctx.canvas.style.setProperty('direction', original[0], original[1]); - } -}; - -var helpers_rtl = { - getRtlAdapter: getAdapter, - overrideTextDirection: overrideTextDirection, - restoreTextDirection: restoreTextDirection, -}; - -var helpers$1 = helpers_core; -var easing = helpers_easing; -var canvas = helpers_canvas; -var options = helpers_options; -var math = helpers_math; -var rtl = helpers_rtl; -helpers$1.easing = easing; -helpers$1.canvas = canvas; -helpers$1.options = options; -helpers$1.math = math; -helpers$1.rtl = rtl; - -function interpolate(start, view, model, ease) { - var keys = Object.keys(model); - var i, ilen, key, actual, origin, target, type, c0, c1; - - for (i = 0, ilen = keys.length; i < ilen; ++i) { - key = keys[i]; - - target = model[key]; - - // if a value is added to the model after pivot() has been called, the view - // doesn't contain it, so let's initialize the view to the target value. - if (!view.hasOwnProperty(key)) { - view[key] = target; - } - - actual = view[key]; - - if (actual === target || key[0] === '_') { - continue; - } - - if (!start.hasOwnProperty(key)) { - start[key] = actual; - } - - origin = start[key]; - - type = typeof target; - - if (type === typeof origin) { - if (type === 'string') { - c0 = chartjsColor(origin); - if (c0.valid) { - c1 = chartjsColor(target); - if (c1.valid) { - view[key] = c1.mix(c0, ease).rgbString(); - continue; - } - } - } else if (helpers$1.isFinite(origin) && helpers$1.isFinite(target)) { - view[key] = origin + (target - origin) * ease; - continue; - } - } - - view[key] = target; - } -} - -var Element = function(configuration) { - helpers$1.extend(this, configuration); - this.initialize.apply(this, arguments); -}; - -helpers$1.extend(Element.prototype, { - _type: undefined, - - initialize: function() { - this.hidden = false; - }, - - pivot: function() { - var me = this; - if (!me._view) { - me._view = helpers$1.extend({}, me._model); - } - me._start = {}; - return me; - }, - - transition: function(ease) { - var me = this; - var model = me._model; - var start = me._start; - var view = me._view; - - // No animation -> No Transition - if (!model || ease === 1) { - me._view = helpers$1.extend({}, model); - me._start = null; - return me; - } - - if (!view) { - view = me._view = {}; - } - - if (!start) { - start = me._start = {}; - } - - interpolate(start, view, model, ease); - - return me; - }, - - tooltipPosition: function() { - return { - x: this._model.x, - y: this._model.y - }; - }, - - hasValue: function() { - return helpers$1.isNumber(this._model.x) && helpers$1.isNumber(this._model.y); - } -}); - -Element.extend = helpers$1.inherits; - -var core_element = Element; - -var exports$3 = core_element.extend({ - chart: null, // the animation associated chart instance - currentStep: 0, // the current animation step - numSteps: 60, // default number of steps - easing: '', // the easing to use for this animation - render: null, // render function used by the animation service - - onAnimationProgress: null, // user specified callback to fire on each step of the animation - onAnimationComplete: null, // user specified callback to fire when the animation finishes -}); - -var core_animation = exports$3; - -// DEPRECATIONS - -/** - * Provided for backward compatibility, use Chart.Animation instead - * @prop Chart.Animation#animationObject - * @deprecated since version 2.6.0 - * @todo remove at version 3 - */ -Object.defineProperty(exports$3.prototype, 'animationObject', { - get: function() { - return this; - } -}); - -/** - * Provided for backward compatibility, use Chart.Animation#chart instead - * @prop Chart.Animation#chartInstance - * @deprecated since version 2.6.0 - * @todo remove at version 3 - */ -Object.defineProperty(exports$3.prototype, 'chartInstance', { - get: function() { - return this.chart; - }, - set: function(value) { - this.chart = value; - } -}); - -core_defaults._set('global', { - animation: { - duration: 1000, - easing: 'easeOutQuart', - onProgress: helpers$1.noop, - onComplete: helpers$1.noop - } -}); - -var core_animations = { - animations: [], - request: null, - - /** - * @param {Chart} chart - The chart to animate. - * @param {Chart.Animation} animation - The animation that we will animate. - * @param {number} duration - The animation duration in ms. - * @param {boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions - */ - addAnimation: function(chart, animation, duration, lazy) { - var animations = this.animations; - var i, ilen; - - animation.chart = chart; - animation.startTime = Date.now(); - animation.duration = duration; - - if (!lazy) { - chart.animating = true; - } - - for (i = 0, ilen = animations.length; i < ilen; ++i) { - if (animations[i].chart === chart) { - animations[i] = animation; - return; - } - } - - animations.push(animation); - - // If there are no animations queued, manually kickstart a digest, for lack of a better word - if (animations.length === 1) { - this.requestAnimationFrame(); - } - }, - - cancelAnimation: function(chart) { - var index = helpers$1.findIndex(this.animations, function(animation) { - return animation.chart === chart; - }); - - if (index !== -1) { - this.animations.splice(index, 1); - chart.animating = false; - } - }, - - requestAnimationFrame: function() { - var me = this; - if (me.request === null) { - // Skip animation frame requests until the active one is executed. - // This can happen when processing mouse events, e.g. 'mousemove' - // and 'mouseout' events will trigger multiple renders. - me.request = helpers$1.requestAnimFrame.call(window, function() { - me.request = null; - me.startDigest(); - }); - } - }, - - /** - * @private - */ - startDigest: function() { - var me = this; - - me.advance(); - - // Do we have more stuff to animate? - if (me.animations.length > 0) { - me.requestAnimationFrame(); - } - }, - - /** - * @private - */ - advance: function() { - var animations = this.animations; - var animation, chart, numSteps, nextStep; - var i = 0; - - // 1 animation per chart, so we are looping charts here - while (i < animations.length) { - animation = animations[i]; - chart = animation.chart; - numSteps = animation.numSteps; - - // Make sure that currentStep starts at 1 - // https://github.com/chartjs/Chart.js/issues/6104 - nextStep = Math.floor((Date.now() - animation.startTime) / animation.duration * numSteps) + 1; - animation.currentStep = Math.min(nextStep, numSteps); - - helpers$1.callback(animation.render, [chart, animation], chart); - helpers$1.callback(animation.onAnimationProgress, [animation], chart); - - if (animation.currentStep >= numSteps) { - helpers$1.callback(animation.onAnimationComplete, [animation], chart); - chart.animating = false; - animations.splice(i, 1); - } else { - ++i; - } - } - } -}; - -var resolve = helpers$1.options.resolve; - -var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift']; - -/** - * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice', - * 'unshift') and notify the listener AFTER the array has been altered. Listeners are - * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments. - */ -function listenArrayEvents(array, listener) { - if (array._chartjs) { - array._chartjs.listeners.push(listener); - return; - } - - Object.defineProperty(array, '_chartjs', { - configurable: true, - enumerable: false, - value: { - listeners: [listener] - } - }); - - arrayEvents.forEach(function(key) { - var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1); - var base = array[key]; - - Object.defineProperty(array, key, { - configurable: true, - enumerable: false, - value: function() { - var args = Array.prototype.slice.call(arguments); - var res = base.apply(this, args); - - helpers$1.each(array._chartjs.listeners, function(object) { - if (typeof object[method] === 'function') { - object[method].apply(object, args); - } - }); - - return res; - } - }); - }); -} - -/** - * Removes the given array event listener and cleanup extra attached properties (such as - * the _chartjs stub and overridden methods) if array doesn't have any more listeners. - */ -function unlistenArrayEvents(array, listener) { - var stub = array._chartjs; - if (!stub) { - return; - } - - var listeners = stub.listeners; - var index = listeners.indexOf(listener); - if (index !== -1) { - listeners.splice(index, 1); - } - - if (listeners.length > 0) { - return; - } - - arrayEvents.forEach(function(key) { - delete array[key]; - }); - - delete array._chartjs; -} - -// Base class for all dataset controllers (line, bar, etc) -var DatasetController = function(chart, datasetIndex) { - this.initialize(chart, datasetIndex); -}; - -helpers$1.extend(DatasetController.prototype, { - - /** - * Element type used to generate a meta dataset (e.g. Chart.element.Line). - * @type {Chart.core.element} - */ - datasetElementType: null, - - /** - * Element type used to generate a meta data (e.g. Chart.element.Point). - * @type {Chart.core.element} - */ - dataElementType: null, - - /** - * Dataset element option keys to be resolved in _resolveDatasetElementOptions. - * A derived controller may override this to resolve controller-specific options. - * The keys defined here are for backward compatibility for legend styles. - * @private - */ - _datasetElementOptions: [ - 'backgroundColor', - 'borderCapStyle', - 'borderColor', - 'borderDash', - 'borderDashOffset', - 'borderJoinStyle', - 'borderWidth' - ], - - /** - * Data element option keys to be resolved in _resolveDataElementOptions. - * A derived controller may override this to resolve controller-specific options. - * The keys defined here are for backward compatibility for legend styles. - * @private - */ - _dataElementOptions: [ - 'backgroundColor', - 'borderColor', - 'borderWidth', - 'pointStyle' - ], - - initialize: function(chart, datasetIndex) { - var me = this; - me.chart = chart; - me.index = datasetIndex; - me.linkScales(); - me.addElements(); - me._type = me.getMeta().type; - }, - - updateIndex: function(datasetIndex) { - this.index = datasetIndex; - }, - - linkScales: function() { - var me = this; - var meta = me.getMeta(); - var chart = me.chart; - var scales = chart.scales; - var dataset = me.getDataset(); - var scalesOpts = chart.options.scales; - - if (meta.xAxisID === null || !(meta.xAxisID in scales) || dataset.xAxisID) { - meta.xAxisID = dataset.xAxisID || scalesOpts.xAxes[0].id; - } - if (meta.yAxisID === null || !(meta.yAxisID in scales) || dataset.yAxisID) { - meta.yAxisID = dataset.yAxisID || scalesOpts.yAxes[0].id; - } - }, - - getDataset: function() { - return this.chart.data.datasets[this.index]; - }, - - getMeta: function() { - return this.chart.getDatasetMeta(this.index); - }, - - getScaleForId: function(scaleID) { - return this.chart.scales[scaleID]; - }, - - /** - * @private - */ - _getValueScaleId: function() { - return this.getMeta().yAxisID; - }, - - /** - * @private - */ - _getIndexScaleId: function() { - return this.getMeta().xAxisID; - }, - - /** - * @private - */ - _getValueScale: function() { - return this.getScaleForId(this._getValueScaleId()); - }, - - /** - * @private - */ - _getIndexScale: function() { - return this.getScaleForId(this._getIndexScaleId()); - }, - - reset: function() { - this._update(true); - }, - - /** - * @private - */ - destroy: function() { - if (this._data) { - unlistenArrayEvents(this._data, this); - } - }, - - createMetaDataset: function() { - var me = this; - var type = me.datasetElementType; - return type && new type({ - _chart: me.chart, - _datasetIndex: me.index - }); - }, - - createMetaData: function(index) { - var me = this; - var type = me.dataElementType; - return type && new type({ - _chart: me.chart, - _datasetIndex: me.index, - _index: index - }); - }, - - addElements: function() { - var me = this; - var meta = me.getMeta(); - var data = me.getDataset().data || []; - var metaData = meta.data; - var i, ilen; - - for (i = 0, ilen = data.length; i < ilen; ++i) { - metaData[i] = metaData[i] || me.createMetaData(i); - } - - meta.dataset = meta.dataset || me.createMetaDataset(); - }, - - addElementAndReset: function(index) { - var element = this.createMetaData(index); - this.getMeta().data.splice(index, 0, element); - this.updateElement(element, index, true); - }, - - buildOrUpdateElements: function() { - var me = this; - var dataset = me.getDataset(); - var data = dataset.data || (dataset.data = []); - - // In order to correctly handle data addition/deletion animation (an thus simulate - // real-time charts), we need to monitor these data modifications and synchronize - // the internal meta data accordingly. - if (me._data !== data) { - if (me._data) { - // This case happens when the user replaced the data array instance. - unlistenArrayEvents(me._data, me); - } - - if (data && Object.isExtensible(data)) { - listenArrayEvents(data, me); - } - me._data = data; - } - - // Re-sync meta data in case the user replaced the data array or if we missed - // any updates and so make sure that we handle number of datapoints changing. - me.resyncElements(); - }, - - /** - * Returns the merged user-supplied and default dataset-level options - * @private - */ - _configure: function() { - var me = this; - me._config = helpers$1.merge({}, [ - me.chart.options.datasets[me._type], - me.getDataset(), - ], { - merger: function(key, target, source) { - if (key !== '_meta' && key !== 'data') { - helpers$1._merger(key, target, source); - } - } - }); - }, - - _update: function(reset) { - var me = this; - me._configure(); - me._cachedDataOpts = null; - me.update(reset); - }, - - update: helpers$1.noop, - - transition: function(easingValue) { - var meta = this.getMeta(); - var elements = meta.data || []; - var ilen = elements.length; - var i = 0; - - for (; i < ilen; ++i) { - elements[i].transition(easingValue); - } - - if (meta.dataset) { - meta.dataset.transition(easingValue); - } - }, - - draw: function() { - var meta = this.getMeta(); - var elements = meta.data || []; - var ilen = elements.length; - var i = 0; - - if (meta.dataset) { - meta.dataset.draw(); - } - - for (; i < ilen; ++i) { - elements[i].draw(); - } - }, - - /** - * Returns a set of predefined style properties that should be used to represent the dataset - * or the data if the index is specified - * @param {number} index - data index - * @return {IStyleInterface} style object - */ - getStyle: function(index) { - var me = this; - var meta = me.getMeta(); - var dataset = meta.dataset; - var style; - - me._configure(); - if (dataset && index === undefined) { - style = me._resolveDatasetElementOptions(dataset || {}); - } else { - index = index || 0; - style = me._resolveDataElementOptions(meta.data[index] || {}, index); - } - - if (style.fill === false || style.fill === null) { - style.backgroundColor = style.borderColor; - } - - return style; - }, - - /** - * @private - */ - _resolveDatasetElementOptions: function(element, hover) { - var me = this; - var chart = me.chart; - var datasetOpts = me._config; - var custom = element.custom || {}; - var options = chart.options.elements[me.datasetElementType.prototype._type] || {}; - var elementOptions = me._datasetElementOptions; - var values = {}; - var i, ilen, key, readKey; - - // Scriptable options - var context = { - chart: chart, - dataset: me.getDataset(), - datasetIndex: me.index, - hover: hover - }; - - for (i = 0, ilen = elementOptions.length; i < ilen; ++i) { - key = elementOptions[i]; - readKey = hover ? 'hover' + key.charAt(0).toUpperCase() + key.slice(1) : key; - values[key] = resolve([ - custom[readKey], - datasetOpts[readKey], - options[readKey] - ], context); - } - - return values; - }, - - /** - * @private - */ - _resolveDataElementOptions: function(element, index) { - var me = this; - var custom = element && element.custom; - var cached = me._cachedDataOpts; - if (cached && !custom) { - return cached; - } - var chart = me.chart; - var datasetOpts = me._config; - var options = chart.options.elements[me.dataElementType.prototype._type] || {}; - var elementOptions = me._dataElementOptions; - var values = {}; - - // Scriptable options - var context = { - chart: chart, - dataIndex: index, - dataset: me.getDataset(), - datasetIndex: me.index - }; - - // `resolve` sets cacheable to `false` if any option is indexed or scripted - var info = {cacheable: !custom}; - - var keys, i, ilen, key; - - custom = custom || {}; - - if (helpers$1.isArray(elementOptions)) { - for (i = 0, ilen = elementOptions.length; i < ilen; ++i) { - key = elementOptions[i]; - values[key] = resolve([ - custom[key], - datasetOpts[key], - options[key] - ], context, index, info); - } - } else { - keys = Object.keys(elementOptions); - for (i = 0, ilen = keys.length; i < ilen; ++i) { - key = keys[i]; - values[key] = resolve([ - custom[key], - datasetOpts[elementOptions[key]], - datasetOpts[key], - options[key] - ], context, index, info); - } - } - - if (info.cacheable) { - me._cachedDataOpts = Object.freeze(values); - } - - return values; - }, - - removeHoverStyle: function(element) { - helpers$1.merge(element._model, element.$previousStyle || {}); - delete element.$previousStyle; - }, - - setHoverStyle: function(element) { - var dataset = this.chart.data.datasets[element._datasetIndex]; - var index = element._index; - var custom = element.custom || {}; - var model = element._model; - var getHoverColor = helpers$1.getHoverColor; - - element.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth - }; - - model.backgroundColor = resolve([custom.hoverBackgroundColor, dataset.hoverBackgroundColor, getHoverColor(model.backgroundColor)], undefined, index); - model.borderColor = resolve([custom.hoverBorderColor, dataset.hoverBorderColor, getHoverColor(model.borderColor)], undefined, index); - model.borderWidth = resolve([custom.hoverBorderWidth, dataset.hoverBorderWidth, model.borderWidth], undefined, index); - }, - - /** - * @private - */ - _removeDatasetHoverStyle: function() { - var element = this.getMeta().dataset; - - if (element) { - this.removeHoverStyle(element); - } - }, - - /** - * @private - */ - _setDatasetHoverStyle: function() { - var element = this.getMeta().dataset; - var prev = {}; - var i, ilen, key, keys, hoverOptions, model; - - if (!element) { - return; - } - - model = element._model; - hoverOptions = this._resolveDatasetElementOptions(element, true); - - keys = Object.keys(hoverOptions); - for (i = 0, ilen = keys.length; i < ilen; ++i) { - key = keys[i]; - prev[key] = model[key]; - model[key] = hoverOptions[key]; - } - - element.$previousStyle = prev; - }, - - /** - * @private - */ - resyncElements: function() { - var me = this; - var meta = me.getMeta(); - var data = me.getDataset().data; - var numMeta = meta.data.length; - var numData = data.length; - - if (numData < numMeta) { - meta.data.splice(numData, numMeta - numData); - } else if (numData > numMeta) { - me.insertElements(numMeta, numData - numMeta); - } - }, - - /** - * @private - */ - insertElements: function(start, count) { - for (var i = 0; i < count; ++i) { - this.addElementAndReset(start + i); - } - }, - - /** - * @private - */ - onDataPush: function() { - var count = arguments.length; - this.insertElements(this.getDataset().data.length - count, count); - }, - - /** - * @private - */ - onDataPop: function() { - this.getMeta().data.pop(); - }, - - /** - * @private - */ - onDataShift: function() { - this.getMeta().data.shift(); - }, - - /** - * @private - */ - onDataSplice: function(start, count) { - this.getMeta().data.splice(start, count); - this.insertElements(start, arguments.length - 2); - }, - - /** - * @private - */ - onDataUnshift: function() { - this.insertElements(0, arguments.length); - } -}); - -DatasetController.extend = helpers$1.inherits; - -var core_datasetController = DatasetController; - -var TAU = Math.PI * 2; - -core_defaults._set('global', { - elements: { - arc: { - backgroundColor: core_defaults.global.defaultColor, - borderColor: '#fff', - borderWidth: 2, - borderAlign: 'center' - } - } -}); - -function clipArc(ctx, arc) { - var startAngle = arc.startAngle; - var endAngle = arc.endAngle; - var pixelMargin = arc.pixelMargin; - var angleMargin = pixelMargin / arc.outerRadius; - var x = arc.x; - var y = arc.y; - - // Draw an inner border by cliping the arc and drawing a double-width border - // Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders - ctx.beginPath(); - ctx.arc(x, y, arc.outerRadius, startAngle - angleMargin, endAngle + angleMargin); - if (arc.innerRadius > pixelMargin) { - angleMargin = pixelMargin / arc.innerRadius; - ctx.arc(x, y, arc.innerRadius - pixelMargin, endAngle + angleMargin, startAngle - angleMargin, true); - } else { - ctx.arc(x, y, pixelMargin, endAngle + Math.PI / 2, startAngle - Math.PI / 2); - } - ctx.closePath(); - ctx.clip(); -} - -function drawFullCircleBorders(ctx, vm, arc, inner) { - var endAngle = arc.endAngle; - var i; - - if (inner) { - arc.endAngle = arc.startAngle + TAU; - clipArc(ctx, arc); - arc.endAngle = endAngle; - if (arc.endAngle === arc.startAngle && arc.fullCircles) { - arc.endAngle += TAU; - arc.fullCircles--; - } - } - - ctx.beginPath(); - ctx.arc(arc.x, arc.y, arc.innerRadius, arc.startAngle + TAU, arc.startAngle, true); - for (i = 0; i < arc.fullCircles; ++i) { - ctx.stroke(); - } - - ctx.beginPath(); - ctx.arc(arc.x, arc.y, vm.outerRadius, arc.startAngle, arc.startAngle + TAU); - for (i = 0; i < arc.fullCircles; ++i) { - ctx.stroke(); - } -} - -function drawBorder(ctx, vm, arc) { - var inner = vm.borderAlign === 'inner'; - - if (inner) { - ctx.lineWidth = vm.borderWidth * 2; - ctx.lineJoin = 'round'; - } else { - ctx.lineWidth = vm.borderWidth; - ctx.lineJoin = 'bevel'; - } - - if (arc.fullCircles) { - drawFullCircleBorders(ctx, vm, arc, inner); - } - - if (inner) { - clipArc(ctx, arc); - } - - ctx.beginPath(); - ctx.arc(arc.x, arc.y, vm.outerRadius, arc.startAngle, arc.endAngle); - ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true); - ctx.closePath(); - ctx.stroke(); -} - -var element_arc = core_element.extend({ - _type: 'arc', - - inLabelRange: function(mouseX) { - var vm = this._view; - - if (vm) { - return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2)); - } - return false; - }, - - inRange: function(chartX, chartY) { - var vm = this._view; - - if (vm) { - var pointRelativePosition = helpers$1.getAngleFromPoint(vm, {x: chartX, y: chartY}); - var angle = pointRelativePosition.angle; - var distance = pointRelativePosition.distance; - - // Sanitise angle range - var startAngle = vm.startAngle; - var endAngle = vm.endAngle; - while (endAngle < startAngle) { - endAngle += TAU; - } - while (angle > endAngle) { - angle -= TAU; - } - while (angle < startAngle) { - angle += TAU; - } - - // Check if within the range of the open/close angle - var betweenAngles = (angle >= startAngle && angle <= endAngle); - var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius); - - return (betweenAngles && withinRadius); - } - return false; - }, - - getCenterPoint: function() { - var vm = this._view; - var halfAngle = (vm.startAngle + vm.endAngle) / 2; - var halfRadius = (vm.innerRadius + vm.outerRadius) / 2; - return { - x: vm.x + Math.cos(halfAngle) * halfRadius, - y: vm.y + Math.sin(halfAngle) * halfRadius - }; - }, - - getArea: function() { - var vm = this._view; - return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2)); - }, - - tooltipPosition: function() { - var vm = this._view; - var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2); - var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius; - - return { - x: vm.x + (Math.cos(centreAngle) * rangeFromCentre), - y: vm.y + (Math.sin(centreAngle) * rangeFromCentre) - }; - }, - - draw: function() { - var ctx = this._chart.ctx; - var vm = this._view; - var pixelMargin = (vm.borderAlign === 'inner') ? 0.33 : 0; - var arc = { - x: vm.x, - y: vm.y, - innerRadius: vm.innerRadius, - outerRadius: Math.max(vm.outerRadius - pixelMargin, 0), - pixelMargin: pixelMargin, - startAngle: vm.startAngle, - endAngle: vm.endAngle, - fullCircles: Math.floor(vm.circumference / TAU) - }; - var i; - - ctx.save(); - - ctx.fillStyle = vm.backgroundColor; - ctx.strokeStyle = vm.borderColor; - - if (arc.fullCircles) { - arc.endAngle = arc.startAngle + TAU; - ctx.beginPath(); - ctx.arc(arc.x, arc.y, arc.outerRadius, arc.startAngle, arc.endAngle); - ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true); - ctx.closePath(); - for (i = 0; i < arc.fullCircles; ++i) { - ctx.fill(); - } - arc.endAngle = arc.startAngle + vm.circumference % TAU; - } - - ctx.beginPath(); - ctx.arc(arc.x, arc.y, arc.outerRadius, arc.startAngle, arc.endAngle); - ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true); - ctx.closePath(); - ctx.fill(); - - if (vm.borderWidth) { - drawBorder(ctx, vm, arc); - } - - ctx.restore(); - } -}); - -var valueOrDefault$1 = helpers$1.valueOrDefault; - -var defaultColor = core_defaults.global.defaultColor; - -core_defaults._set('global', { - elements: { - line: { - tension: 0.4, - backgroundColor: defaultColor, - borderWidth: 3, - borderColor: defaultColor, - borderCapStyle: 'butt', - borderDash: [], - borderDashOffset: 0.0, - borderJoinStyle: 'miter', - capBezierPoints: true, - fill: true, // do we fill in the area between the line and its base axis - } - } -}); - -var element_line = core_element.extend({ - _type: 'line', - - draw: function() { - var me = this; - var vm = me._view; - var ctx = me._chart.ctx; - var spanGaps = vm.spanGaps; - var points = me._children.slice(); // clone array - var globalDefaults = core_defaults.global; - var globalOptionLineElements = globalDefaults.elements.line; - var lastDrawnIndex = -1; - var closePath = me._loop; - var index, previous, currentVM; - - if (!points.length) { - return; - } - - if (me._loop) { - for (index = 0; index < points.length; ++index) { - previous = helpers$1.previousItem(points, index); - // If the line has an open path, shift the point array - if (!points[index]._view.skip && previous._view.skip) { - points = points.slice(index).concat(points.slice(0, index)); - closePath = spanGaps; - break; - } - } - // If the line has a close path, add the first point again - if (closePath) { - points.push(points[0]); - } - } - - ctx.save(); - - // Stroke Line Options - ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle; - - // IE 9 and 10 do not support line dash - if (ctx.setLineDash) { - ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash); - } - - ctx.lineDashOffset = valueOrDefault$1(vm.borderDashOffset, globalOptionLineElements.borderDashOffset); - ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle; - ctx.lineWidth = valueOrDefault$1(vm.borderWidth, globalOptionLineElements.borderWidth); - ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor; - - // Stroke Line - ctx.beginPath(); - - // First point moves to it's starting position no matter what - currentVM = points[0]._view; - if (!currentVM.skip) { - ctx.moveTo(currentVM.x, currentVM.y); - lastDrawnIndex = 0; - } - - for (index = 1; index < points.length; ++index) { - currentVM = points[index]._view; - previous = lastDrawnIndex === -1 ? helpers$1.previousItem(points, index) : points[lastDrawnIndex]; - - if (!currentVM.skip) { - if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) { - // There was a gap and this is the first point after the gap - ctx.moveTo(currentVM.x, currentVM.y); - } else { - // Line to next point - helpers$1.canvas.lineTo(ctx, previous._view, currentVM); - } - lastDrawnIndex = index; - } - } - - if (closePath) { - ctx.closePath(); - } - - ctx.stroke(); - ctx.restore(); - } -}); - -var valueOrDefault$2 = helpers$1.valueOrDefault; - -var defaultColor$1 = core_defaults.global.defaultColor; - -core_defaults._set('global', { - elements: { - point: { - radius: 3, - pointStyle: 'circle', - backgroundColor: defaultColor$1, - borderColor: defaultColor$1, - borderWidth: 1, - // Hover - hitRadius: 1, - hoverRadius: 4, - hoverBorderWidth: 1 - } - } -}); - -function xRange(mouseX) { - var vm = this._view; - return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false; -} - -function yRange(mouseY) { - var vm = this._view; - return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false; -} - -var element_point = core_element.extend({ - _type: 'point', - - inRange: function(mouseX, mouseY) { - var vm = this._view; - return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false; - }, - - inLabelRange: xRange, - inXRange: xRange, - inYRange: yRange, - - getCenterPoint: function() { - var vm = this._view; - return { - x: vm.x, - y: vm.y - }; - }, - - getArea: function() { - return Math.PI * Math.pow(this._view.radius, 2); - }, - - tooltipPosition: function() { - var vm = this._view; - return { - x: vm.x, - y: vm.y, - padding: vm.radius + vm.borderWidth - }; - }, - - draw: function(chartArea) { - var vm = this._view; - var ctx = this._chart.ctx; - var pointStyle = vm.pointStyle; - var rotation = vm.rotation; - var radius = vm.radius; - var x = vm.x; - var y = vm.y; - var globalDefaults = core_defaults.global; - var defaultColor = globalDefaults.defaultColor; // eslint-disable-line no-shadow - - if (vm.skip) { - return; - } - - // Clipping for Points. - if (chartArea === undefined || helpers$1.canvas._isPointInArea(vm, chartArea)) { - ctx.strokeStyle = vm.borderColor || defaultColor; - ctx.lineWidth = valueOrDefault$2(vm.borderWidth, globalDefaults.elements.point.borderWidth); - ctx.fillStyle = vm.backgroundColor || defaultColor; - helpers$1.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation); - } - } -}); - -var defaultColor$2 = core_defaults.global.defaultColor; - -core_defaults._set('global', { - elements: { - rectangle: { - backgroundColor: defaultColor$2, - borderColor: defaultColor$2, - borderSkipped: 'bottom', - borderWidth: 0 - } - } -}); - -function isVertical(vm) { - return vm && vm.width !== undefined; -} - -/** - * Helper function to get the bounds of the bar regardless of the orientation - * @param bar {Chart.Element.Rectangle} the bar - * @return {Bounds} bounds of the bar - * @private - */ -function getBarBounds(vm) { - var x1, x2, y1, y2, half; - - if (isVertical(vm)) { - half = vm.width / 2; - x1 = vm.x - half; - x2 = vm.x + half; - y1 = Math.min(vm.y, vm.base); - y2 = Math.max(vm.y, vm.base); - } else { - half = vm.height / 2; - x1 = Math.min(vm.x, vm.base); - x2 = Math.max(vm.x, vm.base); - y1 = vm.y - half; - y2 = vm.y + half; - } - - return { - left: x1, - top: y1, - right: x2, - bottom: y2 - }; -} - -function swap(orig, v1, v2) { - return orig === v1 ? v2 : orig === v2 ? v1 : orig; -} - -function parseBorderSkipped(vm) { - var edge = vm.borderSkipped; - var res = {}; - - if (!edge) { - return res; - } - - if (vm.horizontal) { - if (vm.base > vm.x) { - edge = swap(edge, 'left', 'right'); - } - } else if (vm.base < vm.y) { - edge = swap(edge, 'bottom', 'top'); - } - - res[edge] = true; - return res; -} - -function parseBorderWidth(vm, maxW, maxH) { - var value = vm.borderWidth; - var skip = parseBorderSkipped(vm); - var t, r, b, l; - - if (helpers$1.isObject(value)) { - t = +value.top || 0; - r = +value.right || 0; - b = +value.bottom || 0; - l = +value.left || 0; - } else { - t = r = b = l = +value || 0; - } - - return { - t: skip.top || (t < 0) ? 0 : t > maxH ? maxH : t, - r: skip.right || (r < 0) ? 0 : r > maxW ? maxW : r, - b: skip.bottom || (b < 0) ? 0 : b > maxH ? maxH : b, - l: skip.left || (l < 0) ? 0 : l > maxW ? maxW : l - }; -} - -function boundingRects(vm) { - var bounds = getBarBounds(vm); - var width = bounds.right - bounds.left; - var height = bounds.bottom - bounds.top; - var border = parseBorderWidth(vm, width / 2, height / 2); - - return { - outer: { - x: bounds.left, - y: bounds.top, - w: width, - h: height - }, - inner: { - x: bounds.left + border.l, - y: bounds.top + border.t, - w: width - border.l - border.r, - h: height - border.t - border.b - } - }; -} - -function inRange(vm, x, y) { - var skipX = x === null; - var skipY = y === null; - var bounds = !vm || (skipX && skipY) ? false : getBarBounds(vm); - - return bounds - && (skipX || x >= bounds.left && x <= bounds.right) - && (skipY || y >= bounds.top && y <= bounds.bottom); -} - -var element_rectangle = core_element.extend({ - _type: 'rectangle', - - draw: function() { - var ctx = this._chart.ctx; - var vm = this._view; - var rects = boundingRects(vm); - var outer = rects.outer; - var inner = rects.inner; - - ctx.fillStyle = vm.backgroundColor; - ctx.fillRect(outer.x, outer.y, outer.w, outer.h); - - if (outer.w === inner.w && outer.h === inner.h) { - return; - } - - ctx.save(); - ctx.beginPath(); - ctx.rect(outer.x, outer.y, outer.w, outer.h); - ctx.clip(); - ctx.fillStyle = vm.borderColor; - ctx.rect(inner.x, inner.y, inner.w, inner.h); - ctx.fill('evenodd'); - ctx.restore(); - }, - - height: function() { - var vm = this._view; - return vm.base - vm.y; - }, - - inRange: function(mouseX, mouseY) { - return inRange(this._view, mouseX, mouseY); - }, - - inLabelRange: function(mouseX, mouseY) { - var vm = this._view; - return isVertical(vm) - ? inRange(vm, mouseX, null) - : inRange(vm, null, mouseY); - }, - - inXRange: function(mouseX) { - return inRange(this._view, mouseX, null); - }, - - inYRange: function(mouseY) { - return inRange(this._view, null, mouseY); - }, - - getCenterPoint: function() { - var vm = this._view; - var x, y; - if (isVertical(vm)) { - x = vm.x; - y = (vm.y + vm.base) / 2; - } else { - x = (vm.x + vm.base) / 2; - y = vm.y; - } - - return {x: x, y: y}; - }, - - getArea: function() { - var vm = this._view; - - return isVertical(vm) - ? vm.width * Math.abs(vm.y - vm.base) - : vm.height * Math.abs(vm.x - vm.base); - }, - - tooltipPosition: function() { - var vm = this._view; - return { - x: vm.x, - y: vm.y - }; - } -}); - -var elements = {}; -var Arc = element_arc; -var Line = element_line; -var Point = element_point; -var Rectangle = element_rectangle; -elements.Arc = Arc; -elements.Line = Line; -elements.Point = Point; -elements.Rectangle = Rectangle; - -var deprecated = helpers$1._deprecated; -var valueOrDefault$3 = helpers$1.valueOrDefault; - -core_defaults._set('bar', { - hover: { - mode: 'label' - }, - - scales: { - xAxes: [{ - type: 'category', - offset: true, - gridLines: { - offsetGridLines: true - } - }], - - yAxes: [{ - type: 'linear' - }] - } -}); - -core_defaults._set('global', { - datasets: { - bar: { - categoryPercentage: 0.8, - barPercentage: 0.9 - } - } -}); - -/** - * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap. - * @private - */ -function computeMinSampleSize(scale, pixels) { - var min = scale._length; - var prev, curr, i, ilen; - - for (i = 1, ilen = pixels.length; i < ilen; ++i) { - min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1])); - } - - for (i = 0, ilen = scale.getTicks().length; i < ilen; ++i) { - curr = scale.getPixelForTick(i); - min = i > 0 ? Math.min(min, Math.abs(curr - prev)) : min; - prev = curr; - } - - return min; -} - -/** - * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null, - * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This - * mode currently always generates bars equally sized (until we introduce scriptable options?). - * @private - */ -function computeFitCategoryTraits(index, ruler, options) { - var thickness = options.barThickness; - var count = ruler.stackCount; - var curr = ruler.pixels[index]; - var min = helpers$1.isNullOrUndef(thickness) - ? computeMinSampleSize(ruler.scale, ruler.pixels) - : -1; - var size, ratio; - - if (helpers$1.isNullOrUndef(thickness)) { - size = min * options.categoryPercentage; - ratio = options.barPercentage; - } else { - // When bar thickness is enforced, category and bar percentages are ignored. - // Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%') - // and deprecate barPercentage since this value is ignored when thickness is absolute. - size = thickness * count; - ratio = 1; - } - - return { - chunk: size / count, - ratio: ratio, - start: curr - (size / 2) - }; -} - -/** - * Computes an "optimal" category that globally arranges bars side by side (no gap when - * percentage options are 1), based on the previous and following categories. This mode - * generates bars with different widths when data are not evenly spaced. - * @private - */ -function computeFlexCategoryTraits(index, ruler, options) { - var pixels = ruler.pixels; - var curr = pixels[index]; - var prev = index > 0 ? pixels[index - 1] : null; - var next = index < pixels.length - 1 ? pixels[index + 1] : null; - var percent = options.categoryPercentage; - var start, size; - - if (prev === null) { - // first data: its size is double based on the next point or, - // if it's also the last data, we use the scale size. - prev = curr - (next === null ? ruler.end - ruler.start : next - curr); - } - - if (next === null) { - // last data: its size is also double based on the previous point. - next = curr + curr - prev; - } - - start = curr - (curr - Math.min(prev, next)) / 2 * percent; - size = Math.abs(next - prev) / 2 * percent; - - return { - chunk: size / ruler.stackCount, - ratio: options.barPercentage, - start: start - }; -} - -var controller_bar = core_datasetController.extend({ - - dataElementType: elements.Rectangle, - - /** - * @private - */ - _dataElementOptions: [ - 'backgroundColor', - 'borderColor', - 'borderSkipped', - 'borderWidth', - 'barPercentage', - 'barThickness', - 'categoryPercentage', - 'maxBarThickness', - 'minBarLength' - ], - - initialize: function() { - var me = this; - var meta, scaleOpts; - - core_datasetController.prototype.initialize.apply(me, arguments); - - meta = me.getMeta(); - meta.stack = me.getDataset().stack; - meta.bar = true; - - scaleOpts = me._getIndexScale().options; - deprecated('bar chart', scaleOpts.barPercentage, 'scales.[x/y]Axes.barPercentage', 'dataset.barPercentage'); - deprecated('bar chart', scaleOpts.barThickness, 'scales.[x/y]Axes.barThickness', 'dataset.barThickness'); - deprecated('bar chart', scaleOpts.categoryPercentage, 'scales.[x/y]Axes.categoryPercentage', 'dataset.categoryPercentage'); - deprecated('bar chart', me._getValueScale().options.minBarLength, 'scales.[x/y]Axes.minBarLength', 'dataset.minBarLength'); - deprecated('bar chart', scaleOpts.maxBarThickness, 'scales.[x/y]Axes.maxBarThickness', 'dataset.maxBarThickness'); - }, - - update: function(reset) { - var me = this; - var rects = me.getMeta().data; - var i, ilen; - - me._ruler = me.getRuler(); - - for (i = 0, ilen = rects.length; i < ilen; ++i) { - me.updateElement(rects[i], i, reset); - } - }, - - updateElement: function(rectangle, index, reset) { - var me = this; - var meta = me.getMeta(); - var dataset = me.getDataset(); - var options = me._resolveDataElementOptions(rectangle, index); - - rectangle._xScale = me.getScaleForId(meta.xAxisID); - rectangle._yScale = me.getScaleForId(meta.yAxisID); - rectangle._datasetIndex = me.index; - rectangle._index = index; - rectangle._model = { - backgroundColor: options.backgroundColor, - borderColor: options.borderColor, - borderSkipped: options.borderSkipped, - borderWidth: options.borderWidth, - datasetLabel: dataset.label, - label: me.chart.data.labels[index] - }; - - if (helpers$1.isArray(dataset.data[index])) { - rectangle._model.borderSkipped = null; - } - - me._updateElementGeometry(rectangle, index, reset, options); - - rectangle.pivot(); - }, - - /** - * @private - */ - _updateElementGeometry: function(rectangle, index, reset, options) { - var me = this; - var model = rectangle._model; - var vscale = me._getValueScale(); - var base = vscale.getBasePixel(); - var horizontal = vscale.isHorizontal(); - var ruler = me._ruler || me.getRuler(); - var vpixels = me.calculateBarValuePixels(me.index, index, options); - var ipixels = me.calculateBarIndexPixels(me.index, index, ruler, options); - - model.horizontal = horizontal; - model.base = reset ? base : vpixels.base; - model.x = horizontal ? reset ? base : vpixels.head : ipixels.center; - model.y = horizontal ? ipixels.center : reset ? base : vpixels.head; - model.height = horizontal ? ipixels.size : undefined; - model.width = horizontal ? undefined : ipixels.size; - }, - - /** - * Returns the stacks based on groups and bar visibility. - * @param {number} [last] - The dataset index - * @returns {string[]} The list of stack IDs - * @private - */ - _getStacks: function(last) { - var me = this; - var scale = me._getIndexScale(); - var metasets = scale._getMatchingVisibleMetas(me._type); - var stacked = scale.options.stacked; - var ilen = metasets.length; - var stacks = []; - var i, meta; - - for (i = 0; i < ilen; ++i) { - meta = metasets[i]; - // stacked | meta.stack - // | found | not found | undefined - // false | x | x | x - // true | | x | - // undefined | | x | x - if (stacked === false || stacks.indexOf(meta.stack) === -1 || - (stacked === undefined && meta.stack === undefined)) { - stacks.push(meta.stack); - } - if (meta.index === last) { - break; - } - } - - return stacks; - }, - - /** - * Returns the effective number of stacks based on groups and bar visibility. - * @private - */ - getStackCount: function() { - return this._getStacks().length; - }, - - /** - * Returns the stack index for the given dataset based on groups and bar visibility. - * @param {number} [datasetIndex] - The dataset index - * @param {string} [name] - The stack name to find - * @returns {number} The stack index - * @private - */ - getStackIndex: function(datasetIndex, name) { - var stacks = this._getStacks(datasetIndex); - var index = (name !== undefined) - ? stacks.indexOf(name) - : -1; // indexOf returns -1 if element is not present - - return (index === -1) - ? stacks.length - 1 - : index; - }, - - /** - * @private - */ - getRuler: function() { - var me = this; - var scale = me._getIndexScale(); - var pixels = []; - var i, ilen; - - for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) { - pixels.push(scale.getPixelForValue(null, i, me.index)); - } - - return { - pixels: pixels, - start: scale._startPixel, - end: scale._endPixel, - stackCount: me.getStackCount(), - scale: scale - }; - }, - - /** - * Note: pixel values are not clamped to the scale area. - * @private - */ - calculateBarValuePixels: function(datasetIndex, index, options) { - var me = this; - var chart = me.chart; - var scale = me._getValueScale(); - var isHorizontal = scale.isHorizontal(); - var datasets = chart.data.datasets; - var metasets = scale._getMatchingVisibleMetas(me._type); - var value = scale._parseValue(datasets[datasetIndex].data[index]); - var minBarLength = options.minBarLength; - var stacked = scale.options.stacked; - var stack = me.getMeta().stack; - var start = value.start === undefined ? 0 : value.max >= 0 && value.min >= 0 ? value.min : value.max; - var length = value.start === undefined ? value.end : value.max >= 0 && value.min >= 0 ? value.max - value.min : value.min - value.max; - var ilen = metasets.length; - var i, imeta, ivalue, base, head, size, stackLength; - - if (stacked || (stacked === undefined && stack !== undefined)) { - for (i = 0; i < ilen; ++i) { - imeta = metasets[i]; - - if (imeta.index === datasetIndex) { - break; - } - - if (imeta.stack === stack) { - stackLength = scale._parseValue(datasets[imeta.index].data[index]); - ivalue = stackLength.start === undefined ? stackLength.end : stackLength.min >= 0 && stackLength.max >= 0 ? stackLength.max : stackLength.min; - - if ((value.min < 0 && ivalue < 0) || (value.max >= 0 && ivalue > 0)) { - start += ivalue; - } - } - } - } - - base = scale.getPixelForValue(start); - head = scale.getPixelForValue(start + length); - size = head - base; - - if (minBarLength !== undefined && Math.abs(size) < minBarLength) { - size = minBarLength; - if (length >= 0 && !isHorizontal || length < 0 && isHorizontal) { - head = base - minBarLength; - } else { - head = base + minBarLength; - } - } - - return { - size: size, - base: base, - head: head, - center: head + size / 2 - }; - }, - - /** - * @private - */ - calculateBarIndexPixels: function(datasetIndex, index, ruler, options) { - var me = this; - var range = options.barThickness === 'flex' - ? computeFlexCategoryTraits(index, ruler, options) - : computeFitCategoryTraits(index, ruler, options); - - var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack); - var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2); - var size = Math.min( - valueOrDefault$3(options.maxBarThickness, Infinity), - range.chunk * range.ratio); - - return { - base: center - size / 2, - head: center + size / 2, - center: center, - size: size - }; - }, - - draw: function() { - var me = this; - var chart = me.chart; - var scale = me._getValueScale(); - var rects = me.getMeta().data; - var dataset = me.getDataset(); - var ilen = rects.length; - var i = 0; - - helpers$1.canvas.clipArea(chart.ctx, chart.chartArea); - - for (; i < ilen; ++i) { - var val = scale._parseValue(dataset.data[i]); - if (!isNaN(val.min) && !isNaN(val.max)) { - rects[i].draw(); - } - } - - helpers$1.canvas.unclipArea(chart.ctx); - }, - - /** - * @private - */ - _resolveDataElementOptions: function() { - var me = this; - var values = helpers$1.extend({}, core_datasetController.prototype._resolveDataElementOptions.apply(me, arguments)); - var indexOpts = me._getIndexScale().options; - var valueOpts = me._getValueScale().options; - - values.barPercentage = valueOrDefault$3(indexOpts.barPercentage, values.barPercentage); - values.barThickness = valueOrDefault$3(indexOpts.barThickness, values.barThickness); - values.categoryPercentage = valueOrDefault$3(indexOpts.categoryPercentage, values.categoryPercentage); - values.maxBarThickness = valueOrDefault$3(indexOpts.maxBarThickness, values.maxBarThickness); - values.minBarLength = valueOrDefault$3(valueOpts.minBarLength, values.minBarLength); - - return values; - } - -}); - -var valueOrDefault$4 = helpers$1.valueOrDefault; -var resolve$1 = helpers$1.options.resolve; - -core_defaults._set('bubble', { - hover: { - mode: 'single' - }, - - scales: { - xAxes: [{ - type: 'linear', // bubble should probably use a linear scale by default - position: 'bottom', - id: 'x-axis-0' // need an ID so datasets can reference the scale - }], - yAxes: [{ - type: 'linear', - position: 'left', - id: 'y-axis-0' - }] - }, - - tooltips: { - callbacks: { - title: function() { - // Title doesn't make sense for scatter since we format the data as a point - return ''; - }, - label: function(item, data) { - var datasetLabel = data.datasets[item.datasetIndex].label || ''; - var dataPoint = data.datasets[item.datasetIndex].data[item.index]; - return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')'; - } - } - } -}); - -var controller_bubble = core_datasetController.extend({ - /** - * @protected - */ - dataElementType: elements.Point, - - /** - * @private - */ - _dataElementOptions: [ - 'backgroundColor', - 'borderColor', - 'borderWidth', - 'hoverBackgroundColor', - 'hoverBorderColor', - 'hoverBorderWidth', - 'hoverRadius', - 'hitRadius', - 'pointStyle', - 'rotation' - ], - - /** - * @protected - */ - update: function(reset) { - var me = this; - var meta = me.getMeta(); - var points = meta.data; - - // Update Points - helpers$1.each(points, function(point, index) { - me.updateElement(point, index, reset); - }); - }, - - /** - * @protected - */ - updateElement: function(point, index, reset) { - var me = this; - var meta = me.getMeta(); - var custom = point.custom || {}; - var xScale = me.getScaleForId(meta.xAxisID); - var yScale = me.getScaleForId(meta.yAxisID); - var options = me._resolveDataElementOptions(point, index); - var data = me.getDataset().data[index]; - var dsIndex = me.index; - - var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex); - var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex); - - point._xScale = xScale; - point._yScale = yScale; - point._options = options; - point._datasetIndex = dsIndex; - point._index = index; - point._model = { - backgroundColor: options.backgroundColor, - borderColor: options.borderColor, - borderWidth: options.borderWidth, - hitRadius: options.hitRadius, - pointStyle: options.pointStyle, - rotation: options.rotation, - radius: reset ? 0 : options.radius, - skip: custom.skip || isNaN(x) || isNaN(y), - x: x, - y: y, - }; - - point.pivot(); - }, - - /** - * @protected - */ - setHoverStyle: function(point) { - var model = point._model; - var options = point._options; - var getHoverColor = helpers$1.getHoverColor; - - point.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth, - radius: model.radius - }; - - model.backgroundColor = valueOrDefault$4(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); - model.borderColor = valueOrDefault$4(options.hoverBorderColor, getHoverColor(options.borderColor)); - model.borderWidth = valueOrDefault$4(options.hoverBorderWidth, options.borderWidth); - model.radius = options.radius + options.hoverRadius; - }, - - /** - * @private - */ - _resolveDataElementOptions: function(point, index) { - var me = this; - var chart = me.chart; - var dataset = me.getDataset(); - var custom = point.custom || {}; - var data = dataset.data[index] || {}; - var values = core_datasetController.prototype._resolveDataElementOptions.apply(me, arguments); - - // Scriptable options - var context = { - chart: chart, - dataIndex: index, - dataset: dataset, - datasetIndex: me.index - }; - - // In case values were cached (and thus frozen), we need to clone the values - if (me._cachedDataOpts === values) { - values = helpers$1.extend({}, values); - } - - // Custom radius resolution - values.radius = resolve$1([ - custom.radius, - data.r, - me._config.radius, - chart.options.elements.point.radius - ], context, index); - - return values; - } -}); - -var valueOrDefault$5 = helpers$1.valueOrDefault; - -var PI$1 = Math.PI; -var DOUBLE_PI$1 = PI$1 * 2; -var HALF_PI$1 = PI$1 / 2; - -core_defaults._set('doughnut', { - animation: { - // Boolean - Whether we animate the rotation of the Doughnut - animateRotate: true, - // Boolean - Whether we animate scaling the Doughnut from the centre - animateScale: false - }, - hover: { - mode: 'single' - }, - legendCallback: function(chart) { - var list = document.createElement('ul'); - var data = chart.data; - var datasets = data.datasets; - var labels = data.labels; - var i, ilen, listItem, listItemSpan; - - list.setAttribute('class', chart.id + '-legend'); - if (datasets.length) { - for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) { - listItem = list.appendChild(document.createElement('li')); - listItemSpan = listItem.appendChild(document.createElement('span')); - listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i]; - if (labels[i]) { - listItem.appendChild(document.createTextNode(labels[i])); - } - } - } - - return list.outerHTML; - }, - legend: { - labels: { - generateLabels: function(chart) { - var data = chart.data; - if (data.labels.length && data.datasets.length) { - return data.labels.map(function(label, i) { - var meta = chart.getDatasetMeta(0); - var style = meta.controller.getStyle(i); - - return { - text: label, - fillStyle: style.backgroundColor, - strokeStyle: style.borderColor, - lineWidth: style.borderWidth, - hidden: isNaN(data.datasets[0].data[i]) || meta.data[i].hidden, - - // Extra data used for toggling the correct item - index: i - }; - }); - } - return []; - } - }, - - onClick: function(e, legendItem) { - var index = legendItem.index; - var chart = this.chart; - var i, ilen, meta; - - for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { - meta = chart.getDatasetMeta(i); - // toggle visibility of index if exists - if (meta.data[index]) { - meta.data[index].hidden = !meta.data[index].hidden; - } - } - - chart.update(); - } - }, - - // The percentage of the chart that we cut out of the middle. - cutoutPercentage: 50, - - // The rotation of the chart, where the first data arc begins. - rotation: -HALF_PI$1, - - // The total circumference of the chart. - circumference: DOUBLE_PI$1, - - // Need to override these to give a nice default - tooltips: { - callbacks: { - title: function() { - return ''; - }, - label: function(tooltipItem, data) { - var dataLabel = data.labels[tooltipItem.index]; - var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index]; - - if (helpers$1.isArray(dataLabel)) { - // show value on first line of multiline label - // need to clone because we are changing the value - dataLabel = dataLabel.slice(); - dataLabel[0] += value; - } else { - dataLabel += value; - } - - return dataLabel; - } - } - } -}); - -var controller_doughnut = core_datasetController.extend({ - - dataElementType: elements.Arc, - - linkScales: helpers$1.noop, - - /** - * @private - */ - _dataElementOptions: [ - 'backgroundColor', - 'borderColor', - 'borderWidth', - 'borderAlign', - 'hoverBackgroundColor', - 'hoverBorderColor', - 'hoverBorderWidth', - ], - - // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly - getRingIndex: function(datasetIndex) { - var ringIndex = 0; - - for (var j = 0; j < datasetIndex; ++j) { - if (this.chart.isDatasetVisible(j)) { - ++ringIndex; - } - } - - return ringIndex; - }, - - update: function(reset) { - var me = this; - var chart = me.chart; - var chartArea = chart.chartArea; - var opts = chart.options; - var ratioX = 1; - var ratioY = 1; - var offsetX = 0; - var offsetY = 0; - var meta = me.getMeta(); - var arcs = meta.data; - var cutout = opts.cutoutPercentage / 100 || 0; - var circumference = opts.circumference; - var chartWeight = me._getRingWeight(me.index); - var maxWidth, maxHeight, i, ilen; - - // If the chart's circumference isn't a full circle, calculate size as a ratio of the width/height of the arc - if (circumference < DOUBLE_PI$1) { - var startAngle = opts.rotation % DOUBLE_PI$1; - startAngle += startAngle >= PI$1 ? -DOUBLE_PI$1 : startAngle < -PI$1 ? DOUBLE_PI$1 : 0; - var endAngle = startAngle + circumference; - var startX = Math.cos(startAngle); - var startY = Math.sin(startAngle); - var endX = Math.cos(endAngle); - var endY = Math.sin(endAngle); - var contains0 = (startAngle <= 0 && endAngle >= 0) || endAngle >= DOUBLE_PI$1; - var contains90 = (startAngle <= HALF_PI$1 && endAngle >= HALF_PI$1) || endAngle >= DOUBLE_PI$1 + HALF_PI$1; - var contains180 = startAngle === -PI$1 || endAngle >= PI$1; - var contains270 = (startAngle <= -HALF_PI$1 && endAngle >= -HALF_PI$1) || endAngle >= PI$1 + HALF_PI$1; - var minX = contains180 ? -1 : Math.min(startX, startX * cutout, endX, endX * cutout); - var minY = contains270 ? -1 : Math.min(startY, startY * cutout, endY, endY * cutout); - var maxX = contains0 ? 1 : Math.max(startX, startX * cutout, endX, endX * cutout); - var maxY = contains90 ? 1 : Math.max(startY, startY * cutout, endY, endY * cutout); - ratioX = (maxX - minX) / 2; - ratioY = (maxY - minY) / 2; - offsetX = -(maxX + minX) / 2; - offsetY = -(maxY + minY) / 2; - } - - for (i = 0, ilen = arcs.length; i < ilen; ++i) { - arcs[i]._options = me._resolveDataElementOptions(arcs[i], i); - } - - chart.borderWidth = me.getMaxBorderWidth(); - maxWidth = (chartArea.right - chartArea.left - chart.borderWidth) / ratioX; - maxHeight = (chartArea.bottom - chartArea.top - chart.borderWidth) / ratioY; - chart.outerRadius = Math.max(Math.min(maxWidth, maxHeight) / 2, 0); - chart.innerRadius = Math.max(chart.outerRadius * cutout, 0); - chart.radiusLength = (chart.outerRadius - chart.innerRadius) / (me._getVisibleDatasetWeightTotal() || 1); - chart.offsetX = offsetX * chart.outerRadius; - chart.offsetY = offsetY * chart.outerRadius; - - meta.total = me.calculateTotal(); - - me.outerRadius = chart.outerRadius - chart.radiusLength * me._getRingWeightOffset(me.index); - me.innerRadius = Math.max(me.outerRadius - chart.radiusLength * chartWeight, 0); - - for (i = 0, ilen = arcs.length; i < ilen; ++i) { - me.updateElement(arcs[i], i, reset); - } - }, - - updateElement: function(arc, index, reset) { - var me = this; - var chart = me.chart; - var chartArea = chart.chartArea; - var opts = chart.options; - var animationOpts = opts.animation; - var centerX = (chartArea.left + chartArea.right) / 2; - var centerY = (chartArea.top + chartArea.bottom) / 2; - var startAngle = opts.rotation; // non reset case handled later - var endAngle = opts.rotation; // non reset case handled later - var dataset = me.getDataset(); - var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / DOUBLE_PI$1); - var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius; - var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius; - var options = arc._options || {}; - - helpers$1.extend(arc, { - // Utility - _datasetIndex: me.index, - _index: index, - - // Desired view properties - _model: { - backgroundColor: options.backgroundColor, - borderColor: options.borderColor, - borderWidth: options.borderWidth, - borderAlign: options.borderAlign, - x: centerX + chart.offsetX, - y: centerY + chart.offsetY, - startAngle: startAngle, - endAngle: endAngle, - circumference: circumference, - outerRadius: outerRadius, - innerRadius: innerRadius, - label: helpers$1.valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index]) - } - }); - - var model = arc._model; - - // Set correct angles if not resetting - if (!reset || !animationOpts.animateRotate) { - if (index === 0) { - model.startAngle = opts.rotation; - } else { - model.startAngle = me.getMeta().data[index - 1]._model.endAngle; - } - - model.endAngle = model.startAngle + model.circumference; - } - - arc.pivot(); - }, - - calculateTotal: function() { - var dataset = this.getDataset(); - var meta = this.getMeta(); - var total = 0; - var value; - - helpers$1.each(meta.data, function(element, index) { - value = dataset.data[index]; - if (!isNaN(value) && !element.hidden) { - total += Math.abs(value); - } - }); - - /* if (total === 0) { - total = NaN; - }*/ - - return total; - }, - - calculateCircumference: function(value) { - var total = this.getMeta().total; - if (total > 0 && !isNaN(value)) { - return DOUBLE_PI$1 * (Math.abs(value) / total); - } - return 0; - }, - - // gets the max border or hover width to properly scale pie charts - getMaxBorderWidth: function(arcs) { - var me = this; - var max = 0; - var chart = me.chart; - var i, ilen, meta, arc, controller, options, borderWidth, hoverWidth; - - if (!arcs) { - // Find the outmost visible dataset - for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) { - if (chart.isDatasetVisible(i)) { - meta = chart.getDatasetMeta(i); - arcs = meta.data; - if (i !== me.index) { - controller = meta.controller; - } - break; - } - } - } - - if (!arcs) { - return 0; - } - - for (i = 0, ilen = arcs.length; i < ilen; ++i) { - arc = arcs[i]; - if (controller) { - controller._configure(); - options = controller._resolveDataElementOptions(arc, i); - } else { - options = arc._options; - } - if (options.borderAlign !== 'inner') { - borderWidth = options.borderWidth; - hoverWidth = options.hoverBorderWidth; - - max = borderWidth > max ? borderWidth : max; - max = hoverWidth > max ? hoverWidth : max; - } - } - return max; - }, - - /** - * @protected - */ - setHoverStyle: function(arc) { - var model = arc._model; - var options = arc._options; - var getHoverColor = helpers$1.getHoverColor; - - arc.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth, - }; - - model.backgroundColor = valueOrDefault$5(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); - model.borderColor = valueOrDefault$5(options.hoverBorderColor, getHoverColor(options.borderColor)); - model.borderWidth = valueOrDefault$5(options.hoverBorderWidth, options.borderWidth); - }, - - /** - * Get radius length offset of the dataset in relation to the visible datasets weights. This allows determining the inner and outer radius correctly - * @private - */ - _getRingWeightOffset: function(datasetIndex) { - var ringWeightOffset = 0; - - for (var i = 0; i < datasetIndex; ++i) { - if (this.chart.isDatasetVisible(i)) { - ringWeightOffset += this._getRingWeight(i); - } - } - - return ringWeightOffset; - }, - - /** - * @private - */ - _getRingWeight: function(dataSetIndex) { - return Math.max(valueOrDefault$5(this.chart.data.datasets[dataSetIndex].weight, 1), 0); - }, - - /** - * Returns the sum of all visibile data set weights. This value can be 0. - * @private - */ - _getVisibleDatasetWeightTotal: function() { - return this._getRingWeightOffset(this.chart.data.datasets.length); - } -}); - -core_defaults._set('horizontalBar', { - hover: { - mode: 'index', - axis: 'y' - }, - - scales: { - xAxes: [{ - type: 'linear', - position: 'bottom' - }], - - yAxes: [{ - type: 'category', - position: 'left', - offset: true, - gridLines: { - offsetGridLines: true - } - }] - }, - - elements: { - rectangle: { - borderSkipped: 'left' - } - }, - - tooltips: { - mode: 'index', - axis: 'y' - } -}); - -core_defaults._set('global', { - datasets: { - horizontalBar: { - categoryPercentage: 0.8, - barPercentage: 0.9 - } - } -}); - -var controller_horizontalBar = controller_bar.extend({ - /** - * @private - */ - _getValueScaleId: function() { - return this.getMeta().xAxisID; - }, - - /** - * @private - */ - _getIndexScaleId: function() { - return this.getMeta().yAxisID; - } -}); - -var valueOrDefault$6 = helpers$1.valueOrDefault; -var resolve$2 = helpers$1.options.resolve; -var isPointInArea = helpers$1.canvas._isPointInArea; - -core_defaults._set('line', { - showLines: true, - spanGaps: false, - - hover: { - mode: 'label' - }, - - scales: { - xAxes: [{ - type: 'category', - id: 'x-axis-0' - }], - yAxes: [{ - type: 'linear', - id: 'y-axis-0' - }] - } -}); - -function scaleClip(scale, halfBorderWidth) { - var tickOpts = scale && scale.options.ticks || {}; - var reverse = tickOpts.reverse; - var min = tickOpts.min === undefined ? halfBorderWidth : 0; - var max = tickOpts.max === undefined ? halfBorderWidth : 0; - return { - start: reverse ? max : min, - end: reverse ? min : max - }; -} - -function defaultClip(xScale, yScale, borderWidth) { - var halfBorderWidth = borderWidth / 2; - var x = scaleClip(xScale, halfBorderWidth); - var y = scaleClip(yScale, halfBorderWidth); - - return { - top: y.end, - right: x.end, - bottom: y.start, - left: x.start - }; -} - -function toClip(value) { - var t, r, b, l; - - if (helpers$1.isObject(value)) { - t = value.top; - r = value.right; - b = value.bottom; - l = value.left; - } else { - t = r = b = l = value; - } - - return { - top: t, - right: r, - bottom: b, - left: l - }; -} - - -var controller_line = core_datasetController.extend({ - - datasetElementType: elements.Line, - - dataElementType: elements.Point, - - /** - * @private - */ - _datasetElementOptions: [ - 'backgroundColor', - 'borderCapStyle', - 'borderColor', - 'borderDash', - 'borderDashOffset', - 'borderJoinStyle', - 'borderWidth', - 'cubicInterpolationMode', - 'fill' - ], - - /** - * @private - */ - _dataElementOptions: { - backgroundColor: 'pointBackgroundColor', - borderColor: 'pointBorderColor', - borderWidth: 'pointBorderWidth', - hitRadius: 'pointHitRadius', - hoverBackgroundColor: 'pointHoverBackgroundColor', - hoverBorderColor: 'pointHoverBorderColor', - hoverBorderWidth: 'pointHoverBorderWidth', - hoverRadius: 'pointHoverRadius', - pointStyle: 'pointStyle', - radius: 'pointRadius', - rotation: 'pointRotation' - }, - - update: function(reset) { - var me = this; - var meta = me.getMeta(); - var line = meta.dataset; - var points = meta.data || []; - var options = me.chart.options; - var config = me._config; - var showLine = me._showLine = valueOrDefault$6(config.showLine, options.showLines); - var i, ilen; - - me._xScale = me.getScaleForId(meta.xAxisID); - me._yScale = me.getScaleForId(meta.yAxisID); - - // Update Line - if (showLine) { - // Compatibility: If the properties are defined with only the old name, use those values - if (config.tension !== undefined && config.lineTension === undefined) { - config.lineTension = config.tension; - } - - // Utility - line._scale = me._yScale; - line._datasetIndex = me.index; - // Data - line._children = points; - // Model - line._model = me._resolveDatasetElementOptions(line); - - line.pivot(); - } - - // Update Points - for (i = 0, ilen = points.length; i < ilen; ++i) { - me.updateElement(points[i], i, reset); - } - - if (showLine && line._model.tension !== 0) { - me.updateBezierControlPoints(); - } - - // Now pivot the point for animation - for (i = 0, ilen = points.length; i < ilen; ++i) { - points[i].pivot(); - } - }, - - updateElement: function(point, index, reset) { - var me = this; - var meta = me.getMeta(); - var custom = point.custom || {}; - var dataset = me.getDataset(); - var datasetIndex = me.index; - var value = dataset.data[index]; - var xScale = me._xScale; - var yScale = me._yScale; - var lineModel = meta.dataset._model; - var x, y; - - var options = me._resolveDataElementOptions(point, index); - - x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex); - y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex); - - // Utility - point._xScale = xScale; - point._yScale = yScale; - point._options = options; - point._datasetIndex = datasetIndex; - point._index = index; - - // Desired view properties - point._model = { - x: x, - y: y, - skip: custom.skip || isNaN(x) || isNaN(y), - // Appearance - radius: options.radius, - pointStyle: options.pointStyle, - rotation: options.rotation, - backgroundColor: options.backgroundColor, - borderColor: options.borderColor, - borderWidth: options.borderWidth, - tension: valueOrDefault$6(custom.tension, lineModel ? lineModel.tension : 0), - steppedLine: lineModel ? lineModel.steppedLine : false, - // Tooltip - hitRadius: options.hitRadius - }; - }, - - /** - * @private - */ - _resolveDatasetElementOptions: function(element) { - var me = this; - var config = me._config; - var custom = element.custom || {}; - var options = me.chart.options; - var lineOptions = options.elements.line; - var values = core_datasetController.prototype._resolveDatasetElementOptions.apply(me, arguments); - - // The default behavior of lines is to break at null values, according - // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158 - // This option gives lines the ability to span gaps - values.spanGaps = valueOrDefault$6(config.spanGaps, options.spanGaps); - values.tension = valueOrDefault$6(config.lineTension, lineOptions.tension); - values.steppedLine = resolve$2([custom.steppedLine, config.steppedLine, lineOptions.stepped]); - values.clip = toClip(valueOrDefault$6(config.clip, defaultClip(me._xScale, me._yScale, values.borderWidth))); - - return values; - }, - - calculatePointY: function(value, index, datasetIndex) { - var me = this; - var chart = me.chart; - var yScale = me._yScale; - var sumPos = 0; - var sumNeg = 0; - var i, ds, dsMeta, stackedRightValue, rightValue, metasets, ilen; - - if (yScale.options.stacked) { - rightValue = +yScale.getRightValue(value); - metasets = chart._getSortedVisibleDatasetMetas(); - ilen = metasets.length; - - for (i = 0; i < ilen; ++i) { - dsMeta = metasets[i]; - if (dsMeta.index === datasetIndex) { - break; - } - - ds = chart.data.datasets[dsMeta.index]; - if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id) { - stackedRightValue = +yScale.getRightValue(ds.data[index]); - if (stackedRightValue < 0) { - sumNeg += stackedRightValue || 0; - } else { - sumPos += stackedRightValue || 0; - } - } - } - - if (rightValue < 0) { - return yScale.getPixelForValue(sumNeg + rightValue); - } - return yScale.getPixelForValue(sumPos + rightValue); - } - return yScale.getPixelForValue(value); - }, - - updateBezierControlPoints: function() { - var me = this; - var chart = me.chart; - var meta = me.getMeta(); - var lineModel = meta.dataset._model; - var area = chart.chartArea; - var points = meta.data || []; - var i, ilen, model, controlPoints; - - // Only consider points that are drawn in case the spanGaps option is used - if (lineModel.spanGaps) { - points = points.filter(function(pt) { - return !pt._model.skip; - }); - } - - function capControlPoint(pt, min, max) { - return Math.max(Math.min(pt, max), min); - } - - if (lineModel.cubicInterpolationMode === 'monotone') { - helpers$1.splineCurveMonotone(points); - } else { - for (i = 0, ilen = points.length; i < ilen; ++i) { - model = points[i]._model; - controlPoints = helpers$1.splineCurve( - helpers$1.previousItem(points, i)._model, - model, - helpers$1.nextItem(points, i)._model, - lineModel.tension - ); - model.controlPointPreviousX = controlPoints.previous.x; - model.controlPointPreviousY = controlPoints.previous.y; - model.controlPointNextX = controlPoints.next.x; - model.controlPointNextY = controlPoints.next.y; - } - } - - if (chart.options.elements.line.capBezierPoints) { - for (i = 0, ilen = points.length; i < ilen; ++i) { - model = points[i]._model; - if (isPointInArea(model, area)) { - if (i > 0 && isPointInArea(points[i - 1]._model, area)) { - model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right); - model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom); - } - if (i < points.length - 1 && isPointInArea(points[i + 1]._model, area)) { - model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right); - model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom); - } - } - } - } - }, - - draw: function() { - var me = this; - var chart = me.chart; - var meta = me.getMeta(); - var points = meta.data || []; - var area = chart.chartArea; - var canvas = chart.canvas; - var i = 0; - var ilen = points.length; - var clip; - - if (me._showLine) { - clip = meta.dataset._model.clip; - - helpers$1.canvas.clipArea(chart.ctx, { - left: clip.left === false ? 0 : area.left - clip.left, - right: clip.right === false ? canvas.width : area.right + clip.right, - top: clip.top === false ? 0 : area.top - clip.top, - bottom: clip.bottom === false ? canvas.height : area.bottom + clip.bottom - }); - - meta.dataset.draw(); - - helpers$1.canvas.unclipArea(chart.ctx); - } - - // Draw the points - for (; i < ilen; ++i) { - points[i].draw(area); - } - }, - - /** - * @protected - */ - setHoverStyle: function(point) { - var model = point._model; - var options = point._options; - var getHoverColor = helpers$1.getHoverColor; - - point.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth, - radius: model.radius - }; - - model.backgroundColor = valueOrDefault$6(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); - model.borderColor = valueOrDefault$6(options.hoverBorderColor, getHoverColor(options.borderColor)); - model.borderWidth = valueOrDefault$6(options.hoverBorderWidth, options.borderWidth); - model.radius = valueOrDefault$6(options.hoverRadius, options.radius); - }, -}); - -var resolve$3 = helpers$1.options.resolve; - -core_defaults._set('polarArea', { - scale: { - type: 'radialLinear', - angleLines: { - display: false - }, - gridLines: { - circular: true - }, - pointLabels: { - display: false - }, - ticks: { - beginAtZero: true - } - }, - - // Boolean - Whether to animate the rotation of the chart - animation: { - animateRotate: true, - animateScale: true - }, - - startAngle: -0.5 * Math.PI, - legendCallback: function(chart) { - var list = document.createElement('ul'); - var data = chart.data; - var datasets = data.datasets; - var labels = data.labels; - var i, ilen, listItem, listItemSpan; - - list.setAttribute('class', chart.id + '-legend'); - if (datasets.length) { - for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) { - listItem = list.appendChild(document.createElement('li')); - listItemSpan = listItem.appendChild(document.createElement('span')); - listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i]; - if (labels[i]) { - listItem.appendChild(document.createTextNode(labels[i])); - } - } - } - - return list.outerHTML; - }, - legend: { - labels: { - generateLabels: function(chart) { - var data = chart.data; - if (data.labels.length && data.datasets.length) { - return data.labels.map(function(label, i) { - var meta = chart.getDatasetMeta(0); - var style = meta.controller.getStyle(i); - - return { - text: label, - fillStyle: style.backgroundColor, - strokeStyle: style.borderColor, - lineWidth: style.borderWidth, - hidden: isNaN(data.datasets[0].data[i]) || meta.data[i].hidden, - - // Extra data used for toggling the correct item - index: i - }; - }); - } - return []; - } - }, - - onClick: function(e, legendItem) { - var index = legendItem.index; - var chart = this.chart; - var i, ilen, meta; - - for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { - meta = chart.getDatasetMeta(i); - meta.data[index].hidden = !meta.data[index].hidden; - } - - chart.update(); - } - }, - - // Need to override these to give a nice default - tooltips: { - callbacks: { - title: function() { - return ''; - }, - label: function(item, data) { - return data.labels[item.index] + ': ' + item.yLabel; - } - } - } -}); - -var controller_polarArea = core_datasetController.extend({ - - dataElementType: elements.Arc, - - linkScales: helpers$1.noop, - - /** - * @private - */ - _dataElementOptions: [ - 'backgroundColor', - 'borderColor', - 'borderWidth', - 'borderAlign', - 'hoverBackgroundColor', - 'hoverBorderColor', - 'hoverBorderWidth', - ], - - /** - * @private - */ - _getIndexScaleId: function() { - return this.chart.scale.id; - }, - - /** - * @private - */ - _getValueScaleId: function() { - return this.chart.scale.id; - }, - - update: function(reset) { - var me = this; - var dataset = me.getDataset(); - var meta = me.getMeta(); - var start = me.chart.options.startAngle || 0; - var starts = me._starts = []; - var angles = me._angles = []; - var arcs = meta.data; - var i, ilen, angle; - - me._updateRadius(); - - meta.count = me.countVisibleElements(); - - for (i = 0, ilen = dataset.data.length; i < ilen; i++) { - starts[i] = start; - angle = me._computeAngle(i); - angles[i] = angle; - start += angle; - } - - for (i = 0, ilen = arcs.length; i < ilen; ++i) { - arcs[i]._options = me._resolveDataElementOptions(arcs[i], i); - me.updateElement(arcs[i], i, reset); - } - }, - - /** - * @private - */ - _updateRadius: function() { - var me = this; - var chart = me.chart; - var chartArea = chart.chartArea; - var opts = chart.options; - var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top); - - chart.outerRadius = Math.max(minSize / 2, 0); - chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0); - chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount(); - - me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index); - me.innerRadius = me.outerRadius - chart.radiusLength; - }, - - updateElement: function(arc, index, reset) { - var me = this; - var chart = me.chart; - var dataset = me.getDataset(); - var opts = chart.options; - var animationOpts = opts.animation; - var scale = chart.scale; - var labels = chart.data.labels; - - var centerX = scale.xCenter; - var centerY = scale.yCenter; - - // var negHalfPI = -0.5 * Math.PI; - var datasetStartAngle = opts.startAngle; - var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]); - var startAngle = me._starts[index]; - var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]); - - var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]); - var options = arc._options || {}; - - helpers$1.extend(arc, { - // Utility - _datasetIndex: me.index, - _index: index, - _scale: scale, - - // Desired view properties - _model: { - backgroundColor: options.backgroundColor, - borderColor: options.borderColor, - borderWidth: options.borderWidth, - borderAlign: options.borderAlign, - x: centerX, - y: centerY, - innerRadius: 0, - outerRadius: reset ? resetRadius : distance, - startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle, - endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle, - label: helpers$1.valueAtIndexOrDefault(labels, index, labels[index]) - } - }); - - arc.pivot(); - }, - - countVisibleElements: function() { - var dataset = this.getDataset(); - var meta = this.getMeta(); - var count = 0; - - helpers$1.each(meta.data, function(element, index) { - if (!isNaN(dataset.data[index]) && !element.hidden) { - count++; - } - }); - - return count; - }, - - /** - * @protected - */ - setHoverStyle: function(arc) { - var model = arc._model; - var options = arc._options; - var getHoverColor = helpers$1.getHoverColor; - var valueOrDefault = helpers$1.valueOrDefault; - - arc.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth, - }; - - model.backgroundColor = valueOrDefault(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); - model.borderColor = valueOrDefault(options.hoverBorderColor, getHoverColor(options.borderColor)); - model.borderWidth = valueOrDefault(options.hoverBorderWidth, options.borderWidth); - }, - - /** - * @private - */ - _computeAngle: function(index) { - var me = this; - var count = this.getMeta().count; - var dataset = me.getDataset(); - var meta = me.getMeta(); - - if (isNaN(dataset.data[index]) || meta.data[index].hidden) { - return 0; - } - - // Scriptable options - var context = { - chart: me.chart, - dataIndex: index, - dataset: dataset, - datasetIndex: me.index - }; - - return resolve$3([ - me.chart.options.elements.arc.angle, - (2 * Math.PI) / count - ], context, index); - } -}); - -core_defaults._set('pie', helpers$1.clone(core_defaults.doughnut)); -core_defaults._set('pie', { - cutoutPercentage: 0 -}); - -// Pie charts are Doughnut chart with different defaults -var controller_pie = controller_doughnut; - -var valueOrDefault$7 = helpers$1.valueOrDefault; - -core_defaults._set('radar', { - spanGaps: false, - scale: { - type: 'radialLinear' - }, - elements: { - line: { - fill: 'start', - tension: 0 // no bezier in radar - } - } -}); - -var controller_radar = core_datasetController.extend({ - datasetElementType: elements.Line, - - dataElementType: elements.Point, - - linkScales: helpers$1.noop, - - /** - * @private - */ - _datasetElementOptions: [ - 'backgroundColor', - 'borderWidth', - 'borderColor', - 'borderCapStyle', - 'borderDash', - 'borderDashOffset', - 'borderJoinStyle', - 'fill' - ], - - /** - * @private - */ - _dataElementOptions: { - backgroundColor: 'pointBackgroundColor', - borderColor: 'pointBorderColor', - borderWidth: 'pointBorderWidth', - hitRadius: 'pointHitRadius', - hoverBackgroundColor: 'pointHoverBackgroundColor', - hoverBorderColor: 'pointHoverBorderColor', - hoverBorderWidth: 'pointHoverBorderWidth', - hoverRadius: 'pointHoverRadius', - pointStyle: 'pointStyle', - radius: 'pointRadius', - rotation: 'pointRotation' - }, - - /** - * @private - */ - _getIndexScaleId: function() { - return this.chart.scale.id; - }, - - /** - * @private - */ - _getValueScaleId: function() { - return this.chart.scale.id; - }, - - update: function(reset) { - var me = this; - var meta = me.getMeta(); - var line = meta.dataset; - var points = meta.data || []; - var scale = me.chart.scale; - var config = me._config; - var i, ilen; - - // Compatibility: If the properties are defined with only the old name, use those values - if (config.tension !== undefined && config.lineTension === undefined) { - config.lineTension = config.tension; - } - - // Utility - line._scale = scale; - line._datasetIndex = me.index; - // Data - line._children = points; - line._loop = true; - // Model - line._model = me._resolveDatasetElementOptions(line); - - line.pivot(); - - // Update Points - for (i = 0, ilen = points.length; i < ilen; ++i) { - me.updateElement(points[i], i, reset); - } - - // Update bezier control points - me.updateBezierControlPoints(); - - // Now pivot the point for animation - for (i = 0, ilen = points.length; i < ilen; ++i) { - points[i].pivot(); - } - }, - - updateElement: function(point, index, reset) { - var me = this; - var custom = point.custom || {}; - var dataset = me.getDataset(); - var scale = me.chart.scale; - var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]); - var options = me._resolveDataElementOptions(point, index); - var lineModel = me.getMeta().dataset._model; - var x = reset ? scale.xCenter : pointPosition.x; - var y = reset ? scale.yCenter : pointPosition.y; - - // Utility - point._scale = scale; - point._options = options; - point._datasetIndex = me.index; - point._index = index; - - // Desired view properties - point._model = { - x: x, // value not used in dataset scale, but we want a consistent API between scales - y: y, - skip: custom.skip || isNaN(x) || isNaN(y), - // Appearance - radius: options.radius, - pointStyle: options.pointStyle, - rotation: options.rotation, - backgroundColor: options.backgroundColor, - borderColor: options.borderColor, - borderWidth: options.borderWidth, - tension: valueOrDefault$7(custom.tension, lineModel ? lineModel.tension : 0), - - // Tooltip - hitRadius: options.hitRadius - }; - }, - - /** - * @private - */ - _resolveDatasetElementOptions: function() { - var me = this; - var config = me._config; - var options = me.chart.options; - var values = core_datasetController.prototype._resolveDatasetElementOptions.apply(me, arguments); - - values.spanGaps = valueOrDefault$7(config.spanGaps, options.spanGaps); - values.tension = valueOrDefault$7(config.lineTension, options.elements.line.tension); - - return values; - }, - - updateBezierControlPoints: function() { - var me = this; - var meta = me.getMeta(); - var area = me.chart.chartArea; - var points = meta.data || []; - var i, ilen, model, controlPoints; - - // Only consider points that are drawn in case the spanGaps option is used - if (meta.dataset._model.spanGaps) { - points = points.filter(function(pt) { - return !pt._model.skip; - }); - } - - function capControlPoint(pt, min, max) { - return Math.max(Math.min(pt, max), min); - } - - for (i = 0, ilen = points.length; i < ilen; ++i) { - model = points[i]._model; - controlPoints = helpers$1.splineCurve( - helpers$1.previousItem(points, i, true)._model, - model, - helpers$1.nextItem(points, i, true)._model, - model.tension - ); - - // Prevent the bezier going outside of the bounds of the graph - model.controlPointPreviousX = capControlPoint(controlPoints.previous.x, area.left, area.right); - model.controlPointPreviousY = capControlPoint(controlPoints.previous.y, area.top, area.bottom); - model.controlPointNextX = capControlPoint(controlPoints.next.x, area.left, area.right); - model.controlPointNextY = capControlPoint(controlPoints.next.y, area.top, area.bottom); - } - }, - - setHoverStyle: function(point) { - var model = point._model; - var options = point._options; - var getHoverColor = helpers$1.getHoverColor; - - point.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth, - radius: model.radius - }; - - model.backgroundColor = valueOrDefault$7(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); - model.borderColor = valueOrDefault$7(options.hoverBorderColor, getHoverColor(options.borderColor)); - model.borderWidth = valueOrDefault$7(options.hoverBorderWidth, options.borderWidth); - model.radius = valueOrDefault$7(options.hoverRadius, options.radius); - } -}); - -core_defaults._set('scatter', { - hover: { - mode: 'single' - }, - - scales: { - xAxes: [{ - id: 'x-axis-1', // need an ID so datasets can reference the scale - type: 'linear', // scatter should not use a category axis - position: 'bottom' - }], - yAxes: [{ - id: 'y-axis-1', - type: 'linear', - position: 'left' - }] - }, - - tooltips: { - callbacks: { - title: function() { - return ''; // doesn't make sense for scatter since data are formatted as a point - }, - label: function(item) { - return '(' + item.xLabel + ', ' + item.yLabel + ')'; - } - } - } -}); - -core_defaults._set('global', { - datasets: { - scatter: { - showLine: false - } - } -}); - -// Scatter charts use line controllers -var controller_scatter = controller_line; - -// NOTE export a map in which the key represents the controller type, not -// the class, and so must be CamelCase in order to be correctly retrieved -// by the controller in core.controller.js (`controllers[meta.type]`). - -var controllers = { - bar: controller_bar, - bubble: controller_bubble, - doughnut: controller_doughnut, - horizontalBar: controller_horizontalBar, - line: controller_line, - polarArea: controller_polarArea, - pie: controller_pie, - radar: controller_radar, - scatter: controller_scatter -}; - -/** - * Helper function to get relative position for an event - * @param {Event|IEvent} event - The event to get the position for - * @param {Chart} chart - The chart - * @returns {object} the event position - */ -function getRelativePosition(e, chart) { - if (e.native) { - return { - x: e.x, - y: e.y - }; - } - - return helpers$1.getRelativePosition(e, chart); -} - -/** - * Helper function to traverse all of the visible elements in the chart - * @param {Chart} chart - the chart - * @param {function} handler - the callback to execute for each visible item - */ -function parseVisibleItems(chart, handler) { - var metasets = chart._getSortedVisibleDatasetMetas(); - var metadata, i, j, ilen, jlen, element; - - for (i = 0, ilen = metasets.length; i < ilen; ++i) { - metadata = metasets[i].data; - for (j = 0, jlen = metadata.length; j < jlen; ++j) { - element = metadata[j]; - if (!element._view.skip) { - handler(element); - } - } - } -} - -/** - * Helper function to get the items that intersect the event position - * @param {ChartElement[]} items - elements to filter - * @param {object} position - the point to be nearest to - * @return {ChartElement[]} the nearest items - */ -function getIntersectItems(chart, position) { - var elements = []; - - parseVisibleItems(chart, function(element) { - if (element.inRange(position.x, position.y)) { - elements.push(element); - } - }); - - return elements; -} - -/** - * Helper function to get the items nearest to the event position considering all visible items in teh chart - * @param {Chart} chart - the chart to look at elements from - * @param {object} position - the point to be nearest to - * @param {boolean} intersect - if true, only consider items that intersect the position - * @param {function} distanceMetric - function to provide the distance between points - * @return {ChartElement[]} the nearest items - */ -function getNearestItems(chart, position, intersect, distanceMetric) { - var minDistance = Number.POSITIVE_INFINITY; - var nearestItems = []; - - parseVisibleItems(chart, function(element) { - if (intersect && !element.inRange(position.x, position.y)) { - return; - } - - var center = element.getCenterPoint(); - var distance = distanceMetric(position, center); - if (distance < minDistance) { - nearestItems = [element]; - minDistance = distance; - } else if (distance === minDistance) { - // Can have multiple items at the same distance in which case we sort by size - nearestItems.push(element); - } - }); - - return nearestItems; -} - -/** - * Get a distance metric function for two points based on the - * axis mode setting - * @param {string} axis - the axis mode. x|y|xy - */ -function getDistanceMetricForAxis(axis) { - var useX = axis.indexOf('x') !== -1; - var useY = axis.indexOf('y') !== -1; - - return function(pt1, pt2) { - var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0; - var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0; - return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2)); - }; -} - -function indexMode(chart, e, options) { - var position = getRelativePosition(e, chart); - // Default axis for index mode is 'x' to match old behaviour - options.axis = options.axis || 'x'; - var distanceMetric = getDistanceMetricForAxis(options.axis); - var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric); - var elements = []; - - if (!items.length) { - return []; - } - - chart._getSortedVisibleDatasetMetas().forEach(function(meta) { - var element = meta.data[items[0]._index]; - - // don't count items that are skipped (null data) - if (element && !element._view.skip) { - elements.push(element); - } - }); - - return elements; -} - -/** - * @interface IInteractionOptions - */ -/** - * If true, only consider items that intersect the point - * @name IInterfaceOptions#boolean - * @type Boolean - */ - -/** - * Contains interaction related functions - * @namespace Chart.Interaction - */ -var core_interaction = { - // Helper function for different modes - modes: { - single: function(chart, e) { - var position = getRelativePosition(e, chart); - var elements = []; - - parseVisibleItems(chart, function(element) { - if (element.inRange(position.x, position.y)) { - elements.push(element); - return elements; - } - }); - - return elements.slice(0, 1); - }, - - /** - * @function Chart.Interaction.modes.label - * @deprecated since version 2.4.0 - * @todo remove at version 3 - * @private - */ - label: indexMode, - - /** - * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something - * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item - * @function Chart.Interaction.modes.index - * @since v2.4.0 - * @param {Chart} chart - the chart we are returning items from - * @param {Event} e - the event we are find things at - * @param {IInteractionOptions} options - options to use during interaction - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - index: indexMode, - - /** - * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something - * If the options.intersect is false, we find the nearest item and return the items in that dataset - * @function Chart.Interaction.modes.dataset - * @param {Chart} chart - the chart we are returning items from - * @param {Event} e - the event we are find things at - * @param {IInteractionOptions} options - options to use during interaction - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - dataset: function(chart, e, options) { - var position = getRelativePosition(e, chart); - options.axis = options.axis || 'xy'; - var distanceMetric = getDistanceMetricForAxis(options.axis); - var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric); - - if (items.length > 0) { - items = chart.getDatasetMeta(items[0]._datasetIndex).data; - } - - return items; - }, - - /** - * @function Chart.Interaction.modes.x-axis - * @deprecated since version 2.4.0. Use index mode and intersect == true - * @todo remove at version 3 - * @private - */ - 'x-axis': function(chart, e) { - return indexMode(chart, e, {intersect: false}); - }, - - /** - * Point mode returns all elements that hit test based on the event position - * of the event - * @function Chart.Interaction.modes.intersect - * @param {Chart} chart - the chart we are returning items from - * @param {Event} e - the event we are find things at - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - point: function(chart, e) { - var position = getRelativePosition(e, chart); - return getIntersectItems(chart, position); - }, - - /** - * nearest mode returns the element closest to the point - * @function Chart.Interaction.modes.intersect - * @param {Chart} chart - the chart we are returning items from - * @param {Event} e - the event we are find things at - * @param {IInteractionOptions} options - options to use - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - nearest: function(chart, e, options) { - var position = getRelativePosition(e, chart); - options.axis = options.axis || 'xy'; - var distanceMetric = getDistanceMetricForAxis(options.axis); - return getNearestItems(chart, position, options.intersect, distanceMetric); - }, - - /** - * x mode returns the elements that hit-test at the current x coordinate - * @function Chart.Interaction.modes.x - * @param {Chart} chart - the chart we are returning items from - * @param {Event} e - the event we are find things at - * @param {IInteractionOptions} options - options to use - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - x: function(chart, e, options) { - var position = getRelativePosition(e, chart); - var items = []; - var intersectsItem = false; - - parseVisibleItems(chart, function(element) { - if (element.inXRange(position.x)) { - items.push(element); - } - - if (element.inRange(position.x, position.y)) { - intersectsItem = true; - } - }); - - // If we want to trigger on an intersect and we don't have any items - // that intersect the position, return nothing - if (options.intersect && !intersectsItem) { - items = []; - } - return items; - }, - - /** - * y mode returns the elements that hit-test at the current y coordinate - * @function Chart.Interaction.modes.y - * @param {Chart} chart - the chart we are returning items from - * @param {Event} e - the event we are find things at - * @param {IInteractionOptions} options - options to use - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - y: function(chart, e, options) { - var position = getRelativePosition(e, chart); - var items = []; - var intersectsItem = false; - - parseVisibleItems(chart, function(element) { - if (element.inYRange(position.y)) { - items.push(element); - } - - if (element.inRange(position.x, position.y)) { - intersectsItem = true; - } - }); - - // If we want to trigger on an intersect and we don't have any items - // that intersect the position, return nothing - if (options.intersect && !intersectsItem) { - items = []; - } - return items; - } - } -}; - -var extend = helpers$1.extend; - -function filterByPosition(array, position) { - return helpers$1.where(array, function(v) { - return v.pos === position; - }); -} - -function sortByWeight(array, reverse) { - return array.sort(function(a, b) { - var v0 = reverse ? b : a; - var v1 = reverse ? a : b; - return v0.weight === v1.weight ? - v0.index - v1.index : - v0.weight - v1.weight; - }); -} - -function wrapBoxes(boxes) { - var layoutBoxes = []; - var i, ilen, box; - - for (i = 0, ilen = (boxes || []).length; i < ilen; ++i) { - box = boxes[i]; - layoutBoxes.push({ - index: i, - box: box, - pos: box.position, - horizontal: box.isHorizontal(), - weight: box.weight - }); - } - return layoutBoxes; -} - -function setLayoutDims(layouts, params) { - var i, ilen, layout; - for (i = 0, ilen = layouts.length; i < ilen; ++i) { - layout = layouts[i]; - // store width used instead of chartArea.w in fitBoxes - layout.width = layout.horizontal - ? layout.box.fullWidth && params.availableWidth - : params.vBoxMaxWidth; - // store height used instead of chartArea.h in fitBoxes - layout.height = layout.horizontal && params.hBoxMaxHeight; - } -} - -function buildLayoutBoxes(boxes) { - var layoutBoxes = wrapBoxes(boxes); - var left = sortByWeight(filterByPosition(layoutBoxes, 'left'), true); - var right = sortByWeight(filterByPosition(layoutBoxes, 'right')); - var top = sortByWeight(filterByPosition(layoutBoxes, 'top'), true); - var bottom = sortByWeight(filterByPosition(layoutBoxes, 'bottom')); - - return { - leftAndTop: left.concat(top), - rightAndBottom: right.concat(bottom), - chartArea: filterByPosition(layoutBoxes, 'chartArea'), - vertical: left.concat(right), - horizontal: top.concat(bottom) - }; -} - -function getCombinedMax(maxPadding, chartArea, a, b) { - return Math.max(maxPadding[a], chartArea[a]) + Math.max(maxPadding[b], chartArea[b]); -} - -function updateDims(chartArea, params, layout) { - var box = layout.box; - var maxPadding = chartArea.maxPadding; - var newWidth, newHeight; - - if (layout.size) { - // this layout was already counted for, lets first reduce old size - chartArea[layout.pos] -= layout.size; - } - layout.size = layout.horizontal ? box.height : box.width; - chartArea[layout.pos] += layout.size; - - if (box.getPadding) { - var boxPadding = box.getPadding(); - maxPadding.top = Math.max(maxPadding.top, boxPadding.top); - maxPadding.left = Math.max(maxPadding.left, boxPadding.left); - maxPadding.bottom = Math.max(maxPadding.bottom, boxPadding.bottom); - maxPadding.right = Math.max(maxPadding.right, boxPadding.right); - } - - newWidth = params.outerWidth - getCombinedMax(maxPadding, chartArea, 'left', 'right'); - newHeight = params.outerHeight - getCombinedMax(maxPadding, chartArea, 'top', 'bottom'); - - if (newWidth !== chartArea.w || newHeight !== chartArea.h) { - chartArea.w = newWidth; - chartArea.h = newHeight; - - // return true if chart area changed in layout's direction - return layout.horizontal ? newWidth !== chartArea.w : newHeight !== chartArea.h; - } -} - -function handleMaxPadding(chartArea) { - var maxPadding = chartArea.maxPadding; - - function updatePos(pos) { - var change = Math.max(maxPadding[pos] - chartArea[pos], 0); - chartArea[pos] += change; - return change; - } - chartArea.y += updatePos('top'); - chartArea.x += updatePos('left'); - updatePos('right'); - updatePos('bottom'); -} - -function getMargins(horizontal, chartArea) { - var maxPadding = chartArea.maxPadding; - - function marginForPositions(positions) { - var margin = {left: 0, top: 0, right: 0, bottom: 0}; - positions.forEach(function(pos) { - margin[pos] = Math.max(chartArea[pos], maxPadding[pos]); - }); - return margin; - } - - return horizontal - ? marginForPositions(['left', 'right']) - : marginForPositions(['top', 'bottom']); -} - -function fitBoxes(boxes, chartArea, params) { - var refitBoxes = []; - var i, ilen, layout, box, refit, changed; - - for (i = 0, ilen = boxes.length; i < ilen; ++i) { - layout = boxes[i]; - box = layout.box; - - box.update( - layout.width || chartArea.w, - layout.height || chartArea.h, - getMargins(layout.horizontal, chartArea) - ); - if (updateDims(chartArea, params, layout)) { - changed = true; - if (refitBoxes.length) { - // Dimensions changed and there were non full width boxes before this - // -> we have to refit those - refit = true; - } - } - if (!box.fullWidth) { // fullWidth boxes don't need to be re-fitted in any case - refitBoxes.push(layout); - } - } - - return refit ? fitBoxes(refitBoxes, chartArea, params) || changed : changed; -} - -function placeBoxes(boxes, chartArea, params) { - var userPadding = params.padding; - var x = chartArea.x; - var y = chartArea.y; - var i, ilen, layout, box; - - for (i = 0, ilen = boxes.length; i < ilen; ++i) { - layout = boxes[i]; - box = layout.box; - if (layout.horizontal) { - box.left = box.fullWidth ? userPadding.left : chartArea.left; - box.right = box.fullWidth ? params.outerWidth - userPadding.right : chartArea.left + chartArea.w; - box.top = y; - box.bottom = y + box.height; - box.width = box.right - box.left; - y = box.bottom; - } else { - box.left = x; - box.right = x + box.width; - box.top = chartArea.top; - box.bottom = chartArea.top + chartArea.h; - box.height = box.bottom - box.top; - x = box.right; - } - } - - chartArea.x = x; - chartArea.y = y; -} - -core_defaults._set('global', { - layout: { - padding: { - top: 0, - right: 0, - bottom: 0, - left: 0 - } - } -}); - -/** - * @interface ILayoutItem - * @prop {string} position - The position of the item in the chart layout. Possible values are - * 'left', 'top', 'right', 'bottom', and 'chartArea' - * @prop {number} weight - The weight used to sort the item. Higher weights are further away from the chart area - * @prop {boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down - * @prop {function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom) - * @prop {function} update - Takes two parameters: width and height. Returns size of item - * @prop {function} getPadding - Returns an object with padding on the edges - * @prop {number} width - Width of item. Must be valid after update() - * @prop {number} height - Height of item. Must be valid after update() - * @prop {number} left - Left edge of the item. Set by layout system and cannot be used in update - * @prop {number} top - Top edge of the item. Set by layout system and cannot be used in update - * @prop {number} right - Right edge of the item. Set by layout system and cannot be used in update - * @prop {number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update - */ - -// The layout service is very self explanatory. It's responsible for the layout within a chart. -// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need -// It is this service's responsibility of carrying out that layout. -var core_layouts = { - defaults: {}, - - /** - * Register a box to a chart. - * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title. - * @param {Chart} chart - the chart to use - * @param {ILayoutItem} item - the item to add to be layed out - */ - addBox: function(chart, item) { - if (!chart.boxes) { - chart.boxes = []; - } - - // initialize item with default values - item.fullWidth = item.fullWidth || false; - item.position = item.position || 'top'; - item.weight = item.weight || 0; - item._layers = item._layers || function() { - return [{ - z: 0, - draw: function() { - item.draw.apply(item, arguments); - } - }]; - }; - - chart.boxes.push(item); - }, - - /** - * Remove a layoutItem from a chart - * @param {Chart} chart - the chart to remove the box from - * @param {ILayoutItem} layoutItem - the item to remove from the layout - */ - removeBox: function(chart, layoutItem) { - var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1; - if (index !== -1) { - chart.boxes.splice(index, 1); - } - }, - - /** - * Sets (or updates) options on the given `item`. - * @param {Chart} chart - the chart in which the item lives (or will be added to) - * @param {ILayoutItem} item - the item to configure with the given options - * @param {object} options - the new item options. - */ - configure: function(chart, item, options) { - var props = ['fullWidth', 'position', 'weight']; - var ilen = props.length; - var i = 0; - var prop; - - for (; i < ilen; ++i) { - prop = props[i]; - if (options.hasOwnProperty(prop)) { - item[prop] = options[prop]; - } - } - }, - - /** - * Fits boxes of the given chart into the given size by having each box measure itself - * then running a fitting algorithm - * @param {Chart} chart - the chart - * @param {number} width - the width to fit into - * @param {number} height - the height to fit into - */ - update: function(chart, width, height) { - if (!chart) { - return; - } - - var layoutOptions = chart.options.layout || {}; - var padding = helpers$1.options.toPadding(layoutOptions.padding); - - var availableWidth = width - padding.width; - var availableHeight = height - padding.height; - var boxes = buildLayoutBoxes(chart.boxes); - var verticalBoxes = boxes.vertical; - var horizontalBoxes = boxes.horizontal; - - // Essentially we now have any number of boxes on each of the 4 sides. - // Our canvas looks like the following. - // The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and - // B1 is the bottom axis - // There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays - // These locations are single-box locations only, when trying to register a chartArea location that is already taken, - // an error will be thrown. - // - // |----------------------------------------------------| - // | T1 (Full Width) | - // |----------------------------------------------------| - // | | | T2 | | - // | |----|-------------------------------------|----| - // | | | C1 | | C2 | | - // | | |----| |----| | - // | | | | | - // | L1 | L2 | ChartArea (C0) | R1 | - // | | | | | - // | | |----| |----| | - // | | | C3 | | C4 | | - // | |----|-------------------------------------|----| - // | | | B1 | | - // |----------------------------------------------------| - // | B2 (Full Width) | - // |----------------------------------------------------| - // - - var params = Object.freeze({ - outerWidth: width, - outerHeight: height, - padding: padding, - availableWidth: availableWidth, - vBoxMaxWidth: availableWidth / 2 / verticalBoxes.length, - hBoxMaxHeight: availableHeight / 2 - }); - var chartArea = extend({ - maxPadding: extend({}, padding), - w: availableWidth, - h: availableHeight, - x: padding.left, - y: padding.top - }, padding); - - setLayoutDims(verticalBoxes.concat(horizontalBoxes), params); - - // First fit vertical boxes - fitBoxes(verticalBoxes, chartArea, params); - - // Then fit horizontal boxes - if (fitBoxes(horizontalBoxes, chartArea, params)) { - // if the area changed, re-fit vertical boxes - fitBoxes(verticalBoxes, chartArea, params); - } - - handleMaxPadding(chartArea); - - // Finally place the boxes to correct coordinates - placeBoxes(boxes.leftAndTop, chartArea, params); - - // Move to opposite side of chart - chartArea.x += chartArea.w; - chartArea.y += chartArea.h; - - placeBoxes(boxes.rightAndBottom, chartArea, params); - - chart.chartArea = { - left: chartArea.left, - top: chartArea.top, - right: chartArea.left + chartArea.w, - bottom: chartArea.top + chartArea.h - }; - - // Finally update boxes in chartArea (radial scale for example) - helpers$1.each(boxes.chartArea, function(layout) { - var box = layout.box; - extend(box, chart.chartArea); - box.update(chartArea.w, chartArea.h); - }); - } -}; - -/** - * Platform fallback implementation (minimal). - * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939 - */ - -var platform_basic = { - acquireContext: function(item) { - if (item && item.canvas) { - // Support for any object associated to a canvas (including a context2d) - item = item.canvas; - } - - return item && item.getContext('2d') || null; - } -}; - -var platform_dom = "/*\n * DOM element rendering detection\n * https://davidwalsh.name/detect-node-insertion\n */\n@keyframes chartjs-render-animation {\n\tfrom { opacity: 0.99; }\n\tto { opacity: 1; }\n}\n\n.chartjs-render-monitor {\n\tanimation: chartjs-render-animation 0.001s;\n}\n\n/*\n * DOM element resizing detection\n * https://github.com/marcj/css-element-queries\n */\n.chartjs-size-monitor,\n.chartjs-size-monitor-expand,\n.chartjs-size-monitor-shrink {\n\tposition: absolute;\n\tdirection: ltr;\n\tleft: 0;\n\ttop: 0;\n\tright: 0;\n\tbottom: 0;\n\toverflow: hidden;\n\tpointer-events: none;\n\tvisibility: hidden;\n\tz-index: -1;\n}\n\n.chartjs-size-monitor-expand > div {\n\tposition: absolute;\n\twidth: 1000000px;\n\theight: 1000000px;\n\tleft: 0;\n\ttop: 0;\n}\n\n.chartjs-size-monitor-shrink > div {\n\tposition: absolute;\n\twidth: 200%;\n\theight: 200%;\n\tleft: 0;\n\ttop: 0;\n}\n"; - -var platform_dom$1 = /*#__PURE__*/Object.freeze({ -__proto__: null, -'default': platform_dom -}); - -var stylesheet = getCjsExportFromNamespace(platform_dom$1); - -var EXPANDO_KEY = '$chartjs'; -var CSS_PREFIX = 'chartjs-'; -var CSS_SIZE_MONITOR = CSS_PREFIX + 'size-monitor'; -var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor'; -var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation'; -var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart']; - -/** - * DOM event types -> Chart.js event types. - * Note: only events with different types are mapped. - * @see https://developer.mozilla.org/en-US/docs/Web/Events - */ -var EVENT_TYPES = { - touchstart: 'mousedown', - touchmove: 'mousemove', - touchend: 'mouseup', - pointerenter: 'mouseenter', - pointerdown: 'mousedown', - pointermove: 'mousemove', - pointerup: 'mouseup', - pointerleave: 'mouseout', - pointerout: 'mouseout' -}; - -/** - * The "used" size is the final value of a dimension property after all calculations have - * been performed. This method uses the computed style of `element` but returns undefined - * if the computed style is not expressed in pixels. That can happen in some cases where - * `element` has a size relative to its parent and this last one is not yet displayed, - * for example because of `display: none` on a parent node. - * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value - * @returns {number} Size in pixels or undefined if unknown. - */ -function readUsedSize(element, property) { - var value = helpers$1.getStyle(element, property); - var matches = value && value.match(/^(\d+)(\.\d+)?px$/); - return matches ? Number(matches[1]) : undefined; -} - -/** - * Initializes the canvas style and render size without modifying the canvas display size, - * since responsiveness is handled by the controller.resize() method. The config is used - * to determine the aspect ratio to apply in case no explicit height has been specified. - */ -function initCanvas(canvas, config) { - var style = canvas.style; - - // NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it - // returns null or '' if no explicit value has been set to the canvas attribute. - var renderHeight = canvas.getAttribute('height'); - var renderWidth = canvas.getAttribute('width'); - - // Chart.js modifies some canvas values that we want to restore on destroy - canvas[EXPANDO_KEY] = { - initial: { - height: renderHeight, - width: renderWidth, - style: { - display: style.display, - height: style.height, - width: style.width - } - } - }; - - // Force canvas to display as block to avoid extra space caused by inline - // elements, which would interfere with the responsive resize process. - // https://github.com/chartjs/Chart.js/issues/2538 - style.display = style.display || 'block'; - - if (renderWidth === null || renderWidth === '') { - var displayWidth = readUsedSize(canvas, 'width'); - if (displayWidth !== undefined) { - canvas.width = displayWidth; - } - } - - if (renderHeight === null || renderHeight === '') { - if (canvas.style.height === '') { - // If no explicit render height and style height, let's apply the aspect ratio, - // which one can be specified by the user but also by charts as default option - // (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2. - canvas.height = canvas.width / (config.options.aspectRatio || 2); - } else { - var displayHeight = readUsedSize(canvas, 'height'); - if (displayWidth !== undefined) { - canvas.height = displayHeight; - } - } - } - - return canvas; -} - -/** - * Detects support for options object argument in addEventListener. - * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support - * @private - */ -var supportsEventListenerOptions = (function() { - var supports = false; - try { - var options = Object.defineProperty({}, 'passive', { - // eslint-disable-next-line getter-return - get: function() { - supports = true; - } - }); - window.addEventListener('e', null, options); - } catch (e) { - // continue regardless of error - } - return supports; -}()); - -// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events. -// https://github.com/chartjs/Chart.js/issues/4287 -var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false; - -function addListener(node, type, listener) { - node.addEventListener(type, listener, eventListenerOptions); -} - -function removeListener(node, type, listener) { - node.removeEventListener(type, listener, eventListenerOptions); -} - -function createEvent(type, chart, x, y, nativeEvent) { - return { - type: type, - chart: chart, - native: nativeEvent || null, - x: x !== undefined ? x : null, - y: y !== undefined ? y : null, - }; -} - -function fromNativeEvent(event, chart) { - var type = EVENT_TYPES[event.type] || event.type; - var pos = helpers$1.getRelativePosition(event, chart); - return createEvent(type, chart, pos.x, pos.y, event); -} - -function throttled(fn, thisArg) { - var ticking = false; - var args = []; - - return function() { - args = Array.prototype.slice.call(arguments); - thisArg = thisArg || this; - - if (!ticking) { - ticking = true; - helpers$1.requestAnimFrame.call(window, function() { - ticking = false; - fn.apply(thisArg, args); - }); - } - }; -} - -function createDiv(cls) { - var el = document.createElement('div'); - el.className = cls || ''; - return el; -} - -// Implementation based on https://github.com/marcj/css-element-queries -function createResizer(handler) { - var maxSize = 1000000; - - // NOTE(SB) Don't use innerHTML because it could be considered unsafe. - // https://github.com/chartjs/Chart.js/issues/5902 - var resizer = createDiv(CSS_SIZE_MONITOR); - var expand = createDiv(CSS_SIZE_MONITOR + '-expand'); - var shrink = createDiv(CSS_SIZE_MONITOR + '-shrink'); - - expand.appendChild(createDiv()); - shrink.appendChild(createDiv()); - - resizer.appendChild(expand); - resizer.appendChild(shrink); - resizer._reset = function() { - expand.scrollLeft = maxSize; - expand.scrollTop = maxSize; - shrink.scrollLeft = maxSize; - shrink.scrollTop = maxSize; - }; - - var onScroll = function() { - resizer._reset(); - handler(); - }; - - addListener(expand, 'scroll', onScroll.bind(expand, 'expand')); - addListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink')); - - return resizer; -} - -// https://davidwalsh.name/detect-node-insertion -function watchForRender(node, handler) { - var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {}); - var proxy = expando.renderProxy = function(e) { - if (e.animationName === CSS_RENDER_ANIMATION) { - handler(); - } - }; - - helpers$1.each(ANIMATION_START_EVENTS, function(type) { - addListener(node, type, proxy); - }); - - // #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class - // is removed then added back immediately (same animation frame?). Accessing the - // `offsetParent` property will force a reflow and re-evaluate the CSS animation. - // https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics - // https://github.com/chartjs/Chart.js/issues/4737 - expando.reflow = !!node.offsetParent; - - node.classList.add(CSS_RENDER_MONITOR); -} - -function unwatchForRender(node) { - var expando = node[EXPANDO_KEY] || {}; - var proxy = expando.renderProxy; - - if (proxy) { - helpers$1.each(ANIMATION_START_EVENTS, function(type) { - removeListener(node, type, proxy); - }); - - delete expando.renderProxy; - } - - node.classList.remove(CSS_RENDER_MONITOR); -} - -function addResizeListener(node, listener, chart) { - var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {}); - - // Let's keep track of this added resizer and thus avoid DOM query when removing it. - var resizer = expando.resizer = createResizer(throttled(function() { - if (expando.resizer) { - var container = chart.options.maintainAspectRatio && node.parentNode; - var w = container ? container.clientWidth : 0; - listener(createEvent('resize', chart)); - if (container && container.clientWidth < w && chart.canvas) { - // If the container size shrank during chart resize, let's assume - // scrollbar appeared. So we resize again with the scrollbar visible - - // effectively making chart smaller and the scrollbar hidden again. - // Because we are inside `throttled`, and currently `ticking`, scroll - // events are ignored during this whole 2 resize process. - // If we assumed wrong and something else happened, we are resizing - // twice in a frame (potential performance issue) - listener(createEvent('resize', chart)); - } - } - })); - - // The resizer needs to be attached to the node parent, so we first need to be - // sure that `node` is attached to the DOM before injecting the resizer element. - watchForRender(node, function() { - if (expando.resizer) { - var container = node.parentNode; - if (container && container !== resizer.parentNode) { - container.insertBefore(resizer, container.firstChild); - } - - // The container size might have changed, let's reset the resizer state. - resizer._reset(); - } - }); -} - -function removeResizeListener(node) { - var expando = node[EXPANDO_KEY] || {}; - var resizer = expando.resizer; - - delete expando.resizer; - unwatchForRender(node); - - if (resizer && resizer.parentNode) { - resizer.parentNode.removeChild(resizer); - } -} - -/** - * Injects CSS styles inline if the styles are not already present. - * @param {HTMLDocument|ShadowRoot} rootNode - the node to contain the <style>. - * @param {string} css - the CSS to be injected. - */ -function injectCSS(rootNode, css) { - // https://stackoverflow.com/q/3922139 - var expando = rootNode[EXPANDO_KEY] || (rootNode[EXPANDO_KEY] = {}); - if (!expando.containsStyles) { - expando.containsStyles = true; - css = '/* Chart.js */\n' + css; - var style = document.createElement('style'); - style.setAttribute('type', 'text/css'); - style.appendChild(document.createTextNode(css)); - rootNode.appendChild(style); - } -} - -var platform_dom$2 = { - /** - * When `true`, prevents the automatic injection of the stylesheet required to - * correctly detect when the chart is added to the DOM and then resized. This - * switch has been added to allow external stylesheet (`dist/Chart(.min)?.js`) - * to be manually imported to make this library compatible with any CSP. - * See https://github.com/chartjs/Chart.js/issues/5208 - */ - disableCSSInjection: false, - - /** - * This property holds whether this platform is enabled for the current environment. - * Currently used by platform.js to select the proper implementation. - * @private - */ - _enabled: typeof window !== 'undefined' && typeof document !== 'undefined', - - /** - * Initializes resources that depend on platform options. - * @param {HTMLCanvasElement} canvas - The Canvas element. - * @private - */ - _ensureLoaded: function(canvas) { - if (!this.disableCSSInjection) { - // If the canvas is in a shadow DOM, then the styles must also be inserted - // into the same shadow DOM. - // https://github.com/chartjs/Chart.js/issues/5763 - var root = canvas.getRootNode ? canvas.getRootNode() : document; - var targetNode = root.host ? root : document.head; - injectCSS(targetNode, stylesheet); - } - }, - - acquireContext: function(item, config) { - if (typeof item === 'string') { - item = document.getElementById(item); - } else if (item.length) { - // Support for array based queries (such as jQuery) - item = item[0]; - } - - if (item && item.canvas) { - // Support for any object associated to a canvas (including a context2d) - item = item.canvas; - } - - // To prevent canvas fingerprinting, some add-ons undefine the getContext - // method, for example: https://github.com/kkapsner/CanvasBlocker - // https://github.com/chartjs/Chart.js/issues/2807 - var context = item && item.getContext && item.getContext('2d'); - - // `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is - // inside an iframe or when running in a protected environment. We could guess the - // types from their toString() value but let's keep things flexible and assume it's - // a sufficient condition if the item has a context2D which has item as `canvas`. - // https://github.com/chartjs/Chart.js/issues/3887 - // https://github.com/chartjs/Chart.js/issues/4102 - // https://github.com/chartjs/Chart.js/issues/4152 - if (context && context.canvas === item) { - // Load platform resources on first chart creation, to make it possible to - // import the library before setting platform options. - this._ensureLoaded(item); - initCanvas(item, config); - return context; - } - - return null; - }, - - releaseContext: function(context) { - var canvas = context.canvas; - if (!canvas[EXPANDO_KEY]) { - return; - } - - var initial = canvas[EXPANDO_KEY].initial; - ['height', 'width'].forEach(function(prop) { - var value = initial[prop]; - if (helpers$1.isNullOrUndef(value)) { - canvas.removeAttribute(prop); - } else { - canvas.setAttribute(prop, value); - } - }); - - helpers$1.each(initial.style || {}, function(value, key) { - canvas.style[key] = value; - }); - - // The canvas render size might have been changed (and thus the state stack discarded), - // we can't use save() and restore() to restore the initial state. So make sure that at - // least the canvas context is reset to the default state by setting the canvas width. - // https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html - // eslint-disable-next-line no-self-assign - canvas.width = canvas.width; - - delete canvas[EXPANDO_KEY]; - }, - - addEventListener: function(chart, type, listener) { - var canvas = chart.canvas; - if (type === 'resize') { - // Note: the resize event is not supported on all browsers. - addResizeListener(canvas, listener, chart); - return; - } - - var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {}); - var proxies = expando.proxies || (expando.proxies = {}); - var proxy = proxies[chart.id + '_' + type] = function(event) { - listener(fromNativeEvent(event, chart)); - }; - - addListener(canvas, type, proxy); - }, - - removeEventListener: function(chart, type, listener) { - var canvas = chart.canvas; - if (type === 'resize') { - // Note: the resize event is not supported on all browsers. - removeResizeListener(canvas); - return; - } - - var expando = listener[EXPANDO_KEY] || {}; - var proxies = expando.proxies || {}; - var proxy = proxies[chart.id + '_' + type]; - if (!proxy) { - return; - } - - removeListener(canvas, type, proxy); - } -}; - -// DEPRECATIONS - -/** - * Provided for backward compatibility, use EventTarget.addEventListener instead. - * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+ - * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener - * @function Chart.helpers.addEvent - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers$1.addEvent = addListener; - -/** - * Provided for backward compatibility, use EventTarget.removeEventListener instead. - * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+ - * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener - * @function Chart.helpers.removeEvent - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers$1.removeEvent = removeListener; - -// @TODO Make possible to select another platform at build time. -var implementation = platform_dom$2._enabled ? platform_dom$2 : platform_basic; - -/** - * @namespace Chart.platform - * @see https://chartjs.gitbooks.io/proposals/content/Platform.html - * @since 2.4.0 - */ -var platform = helpers$1.extend({ - /** - * @since 2.7.0 - */ - initialize: function() {}, - - /** - * Called at chart construction time, returns a context2d instance implementing - * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}. - * @param {*} item - The native item from which to acquire context (platform specific) - * @param {object} options - The chart options - * @returns {CanvasRenderingContext2D} context2d instance - */ - acquireContext: function() {}, - - /** - * Called at chart destruction time, releases any resources associated to the context - * previously returned by the acquireContext() method. - * @param {CanvasRenderingContext2D} context - The context2d instance - * @returns {boolean} true if the method succeeded, else false - */ - releaseContext: function() {}, - - /** - * Registers the specified listener on the given chart. - * @param {Chart} chart - Chart from which to listen for event - * @param {string} type - The ({@link IEvent}) type to listen for - * @param {function} listener - Receives a notification (an object that implements - * the {@link IEvent} interface) when an event of the specified type occurs. - */ - addEventListener: function() {}, - - /** - * Removes the specified listener previously registered with addEventListener. - * @param {Chart} chart - Chart from which to remove the listener - * @param {string} type - The ({@link IEvent}) type to remove - * @param {function} listener - The listener function to remove from the event target. - */ - removeEventListener: function() {} - -}, implementation); - -core_defaults._set('global', { - plugins: {} -}); - -/** - * The plugin service singleton - * @namespace Chart.plugins - * @since 2.1.0 - */ -var core_plugins = { - /** - * Globally registered plugins. - * @private - */ - _plugins: [], - - /** - * This identifier is used to invalidate the descriptors cache attached to each chart - * when a global plugin is registered or unregistered. In this case, the cache ID is - * incremented and descriptors are regenerated during following API calls. - * @private - */ - _cacheId: 0, - - /** - * Registers the given plugin(s) if not already registered. - * @param {IPlugin[]|IPlugin} plugins plugin instance(s). - */ - register: function(plugins) { - var p = this._plugins; - ([]).concat(plugins).forEach(function(plugin) { - if (p.indexOf(plugin) === -1) { - p.push(plugin); - } - }); - - this._cacheId++; - }, - - /** - * Unregisters the given plugin(s) only if registered. - * @param {IPlugin[]|IPlugin} plugins plugin instance(s). - */ - unregister: function(plugins) { - var p = this._plugins; - ([]).concat(plugins).forEach(function(plugin) { - var idx = p.indexOf(plugin); - if (idx !== -1) { - p.splice(idx, 1); - } - }); - - this._cacheId++; - }, - - /** - * Remove all registered plugins. - * @since 2.1.5 - */ - clear: function() { - this._plugins = []; - this._cacheId++; - }, - - /** - * Returns the number of registered plugins? - * @returns {number} - * @since 2.1.5 - */ - count: function() { - return this._plugins.length; - }, - - /** - * Returns all registered plugin instances. - * @returns {IPlugin[]} array of plugin objects. - * @since 2.1.5 - */ - getAll: function() { - return this._plugins; - }, - - /** - * Calls enabled plugins for `chart` on the specified hook and with the given args. - * This method immediately returns as soon as a plugin explicitly returns false. The - * returned value can be used, for instance, to interrupt the current action. - * @param {Chart} chart - The chart instance for which plugins should be called. - * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate'). - * @param {Array} [args] - Extra arguments to apply to the hook call. - * @returns {boolean} false if any of the plugins return false, else returns true. - */ - notify: function(chart, hook, args) { - var descriptors = this.descriptors(chart); - var ilen = descriptors.length; - var i, descriptor, plugin, params, method; - - for (i = 0; i < ilen; ++i) { - descriptor = descriptors[i]; - plugin = descriptor.plugin; - method = plugin[hook]; - if (typeof method === 'function') { - params = [chart].concat(args || []); - params.push(descriptor.options); - if (method.apply(plugin, params) === false) { - return false; - } - } - } - - return true; - }, - - /** - * Returns descriptors of enabled plugins for the given chart. - * @returns {object[]} [{ plugin, options }] - * @private - */ - descriptors: function(chart) { - var cache = chart.$plugins || (chart.$plugins = {}); - if (cache.id === this._cacheId) { - return cache.descriptors; - } - - var plugins = []; - var descriptors = []; - var config = (chart && chart.config) || {}; - var options = (config.options && config.options.plugins) || {}; - - this._plugins.concat(config.plugins || []).forEach(function(plugin) { - var idx = plugins.indexOf(plugin); - if (idx !== -1) { - return; - } - - var id = plugin.id; - var opts = options[id]; - if (opts === false) { - return; - } - - if (opts === true) { - opts = helpers$1.clone(core_defaults.global.plugins[id]); - } - - plugins.push(plugin); - descriptors.push({ - plugin: plugin, - options: opts || {} - }); - }); - - cache.descriptors = descriptors; - cache.id = this._cacheId; - return descriptors; - }, - - /** - * Invalidates cache for the given chart: descriptors hold a reference on plugin option, - * but in some cases, this reference can be changed by the user when updating options. - * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167 - * @private - */ - _invalidate: function(chart) { - delete chart.$plugins; - } -}; - -var core_scaleService = { - // Scale registration object. Extensions can register new scale types (such as log or DB scales) and then - // use the new chart options to grab the correct scale - constructors: {}, - // Use a registration function so that we can move to an ES6 map when we no longer need to support - // old browsers - - // Scale config defaults - defaults: {}, - registerScaleType: function(type, scaleConstructor, scaleDefaults) { - this.constructors[type] = scaleConstructor; - this.defaults[type] = helpers$1.clone(scaleDefaults); - }, - getScaleConstructor: function(type) { - return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined; - }, - getScaleDefaults: function(type) { - // Return the scale defaults merged with the global settings so that we always use the latest ones - return this.defaults.hasOwnProperty(type) ? helpers$1.merge({}, [core_defaults.scale, this.defaults[type]]) : {}; - }, - updateScaleDefaults: function(type, additions) { - var me = this; - if (me.defaults.hasOwnProperty(type)) { - me.defaults[type] = helpers$1.extend(me.defaults[type], additions); - } - }, - addScalesToLayout: function(chart) { - // Adds each scale to the chart.boxes array to be sized accordingly - helpers$1.each(chart.scales, function(scale) { - // Set ILayoutItem parameters for backwards compatibility - scale.fullWidth = scale.options.fullWidth; - scale.position = scale.options.position; - scale.weight = scale.options.weight; - core_layouts.addBox(chart, scale); - }); - } -}; - -var valueOrDefault$8 = helpers$1.valueOrDefault; -var getRtlHelper = helpers$1.rtl.getRtlAdapter; - -core_defaults._set('global', { - tooltips: { - enabled: true, - custom: null, - mode: 'nearest', - position: 'average', - intersect: true, - backgroundColor: 'rgba(0,0,0,0.8)', - titleFontStyle: 'bold', - titleSpacing: 2, - titleMarginBottom: 6, - titleFontColor: '#fff', - titleAlign: 'left', - bodySpacing: 2, - bodyFontColor: '#fff', - bodyAlign: 'left', - footerFontStyle: 'bold', - footerSpacing: 2, - footerMarginTop: 6, - footerFontColor: '#fff', - footerAlign: 'left', - yPadding: 6, - xPadding: 6, - caretPadding: 2, - caretSize: 5, - cornerRadius: 6, - multiKeyBackground: '#fff', - displayColors: true, - borderColor: 'rgba(0,0,0,0)', - borderWidth: 0, - callbacks: { - // Args are: (tooltipItems, data) - beforeTitle: helpers$1.noop, - title: function(tooltipItems, data) { - var title = ''; - var labels = data.labels; - var labelCount = labels ? labels.length : 0; - - if (tooltipItems.length > 0) { - var item = tooltipItems[0]; - if (item.label) { - title = item.label; - } else if (item.xLabel) { - title = item.xLabel; - } else if (labelCount > 0 && item.index < labelCount) { - title = labels[item.index]; - } - } - - return title; - }, - afterTitle: helpers$1.noop, - - // Args are: (tooltipItems, data) - beforeBody: helpers$1.noop, - - // Args are: (tooltipItem, data) - beforeLabel: helpers$1.noop, - label: function(tooltipItem, data) { - var label = data.datasets[tooltipItem.datasetIndex].label || ''; - - if (label) { - label += ': '; - } - if (!helpers$1.isNullOrUndef(tooltipItem.value)) { - label += tooltipItem.value; - } else { - label += tooltipItem.yLabel; - } - return label; - }, - labelColor: function(tooltipItem, chart) { - var meta = chart.getDatasetMeta(tooltipItem.datasetIndex); - var activeElement = meta.data[tooltipItem.index]; - var view = activeElement._view; - return { - borderColor: view.borderColor, - backgroundColor: view.backgroundColor - }; - }, - labelTextColor: function() { - return this._options.bodyFontColor; - }, - afterLabel: helpers$1.noop, - - // Args are: (tooltipItems, data) - afterBody: helpers$1.noop, - - // Args are: (tooltipItems, data) - beforeFooter: helpers$1.noop, - footer: helpers$1.noop, - afterFooter: helpers$1.noop - } - } -}); - -var positioners = { - /** - * Average mode places the tooltip at the average position of the elements shown - * @function Chart.Tooltip.positioners.average - * @param elements {ChartElement[]} the elements being displayed in the tooltip - * @returns {object} tooltip position - */ - average: function(elements) { - if (!elements.length) { - return false; - } - - var i, len; - var x = 0; - var y = 0; - var count = 0; - - for (i = 0, len = elements.length; i < len; ++i) { - var el = elements[i]; - if (el && el.hasValue()) { - var pos = el.tooltipPosition(); - x += pos.x; - y += pos.y; - ++count; - } - } - - return { - x: x / count, - y: y / count - }; - }, - - /** - * Gets the tooltip position nearest of the item nearest to the event position - * @function Chart.Tooltip.positioners.nearest - * @param elements {Chart.Element[]} the tooltip elements - * @param eventPosition {object} the position of the event in canvas coordinates - * @returns {object} the tooltip position - */ - nearest: function(elements, eventPosition) { - var x = eventPosition.x; - var y = eventPosition.y; - var minDistance = Number.POSITIVE_INFINITY; - var i, len, nearestElement; - - for (i = 0, len = elements.length; i < len; ++i) { - var el = elements[i]; - if (el && el.hasValue()) { - var center = el.getCenterPoint(); - var d = helpers$1.distanceBetweenPoints(eventPosition, center); - - if (d < minDistance) { - minDistance = d; - nearestElement = el; - } - } - } - - if (nearestElement) { - var tp = nearestElement.tooltipPosition(); - x = tp.x; - y = tp.y; - } - - return { - x: x, - y: y - }; - } -}; - -// Helper to push or concat based on if the 2nd parameter is an array or not -function pushOrConcat(base, toPush) { - if (toPush) { - if (helpers$1.isArray(toPush)) { - // base = base.concat(toPush); - Array.prototype.push.apply(base, toPush); - } else { - base.push(toPush); - } - } - - return base; -} - -/** - * Returns array of strings split by newline - * @param {string} value - The value to split by newline. - * @returns {string[]} value if newline present - Returned from String split() method - * @function - */ -function splitNewlines(str) { - if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) { - return str.split('\n'); - } - return str; -} - - -/** - * Private helper to create a tooltip item model - * @param element - the chart element (point, arc, bar) to create the tooltip item for - * @return new tooltip item - */ -function createTooltipItem(element) { - var xScale = element._xScale; - var yScale = element._yScale || element._scale; // handle radar || polarArea charts - var index = element._index; - var datasetIndex = element._datasetIndex; - var controller = element._chart.getDatasetMeta(datasetIndex).controller; - var indexScale = controller._getIndexScale(); - var valueScale = controller._getValueScale(); - - return { - xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '', - yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '', - label: indexScale ? '' + indexScale.getLabelForIndex(index, datasetIndex) : '', - value: valueScale ? '' + valueScale.getLabelForIndex(index, datasetIndex) : '', - index: index, - datasetIndex: datasetIndex, - x: element._model.x, - y: element._model.y - }; -} - -/** - * Helper to get the reset model for the tooltip - * @param tooltipOpts {object} the tooltip options - */ -function getBaseModel(tooltipOpts) { - var globalDefaults = core_defaults.global; - - return { - // Positioning - xPadding: tooltipOpts.xPadding, - yPadding: tooltipOpts.yPadding, - xAlign: tooltipOpts.xAlign, - yAlign: tooltipOpts.yAlign, - - // Drawing direction and text direction - rtl: tooltipOpts.rtl, - textDirection: tooltipOpts.textDirection, - - // Body - bodyFontColor: tooltipOpts.bodyFontColor, - _bodyFontFamily: valueOrDefault$8(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily), - _bodyFontStyle: valueOrDefault$8(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle), - _bodyAlign: tooltipOpts.bodyAlign, - bodyFontSize: valueOrDefault$8(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize), - bodySpacing: tooltipOpts.bodySpacing, - - // Title - titleFontColor: tooltipOpts.titleFontColor, - _titleFontFamily: valueOrDefault$8(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily), - _titleFontStyle: valueOrDefault$8(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle), - titleFontSize: valueOrDefault$8(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize), - _titleAlign: tooltipOpts.titleAlign, - titleSpacing: tooltipOpts.titleSpacing, - titleMarginBottom: tooltipOpts.titleMarginBottom, - - // Footer - footerFontColor: tooltipOpts.footerFontColor, - _footerFontFamily: valueOrDefault$8(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily), - _footerFontStyle: valueOrDefault$8(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle), - footerFontSize: valueOrDefault$8(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize), - _footerAlign: tooltipOpts.footerAlign, - footerSpacing: tooltipOpts.footerSpacing, - footerMarginTop: tooltipOpts.footerMarginTop, - - // Appearance - caretSize: tooltipOpts.caretSize, - cornerRadius: tooltipOpts.cornerRadius, - backgroundColor: tooltipOpts.backgroundColor, - opacity: 0, - legendColorBackground: tooltipOpts.multiKeyBackground, - displayColors: tooltipOpts.displayColors, - borderColor: tooltipOpts.borderColor, - borderWidth: tooltipOpts.borderWidth - }; -} - -/** - * Get the size of the tooltip - */ -function getTooltipSize(tooltip, model) { - var ctx = tooltip._chart.ctx; - - var height = model.yPadding * 2; // Tooltip Padding - var width = 0; - - // Count of all lines in the body - var body = model.body; - var combinedBodyLength = body.reduce(function(count, bodyItem) { - return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length; - }, 0); - combinedBodyLength += model.beforeBody.length + model.afterBody.length; - - var titleLineCount = model.title.length; - var footerLineCount = model.footer.length; - var titleFontSize = model.titleFontSize; - var bodyFontSize = model.bodyFontSize; - var footerFontSize = model.footerFontSize; - - height += titleLineCount * titleFontSize; // Title Lines - height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing - height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin - height += combinedBodyLength * bodyFontSize; // Body Lines - height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing - height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin - height += footerLineCount * (footerFontSize); // Footer Lines - height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing - - // Title width - var widthPadding = 0; - var maxLineWidth = function(line) { - width = Math.max(width, ctx.measureText(line).width + widthPadding); - }; - - ctx.font = helpers$1.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily); - helpers$1.each(model.title, maxLineWidth); - - // Body width - ctx.font = helpers$1.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily); - helpers$1.each(model.beforeBody.concat(model.afterBody), maxLineWidth); - - // Body lines may include some extra width due to the color box - widthPadding = model.displayColors ? (bodyFontSize + 2) : 0; - helpers$1.each(body, function(bodyItem) { - helpers$1.each(bodyItem.before, maxLineWidth); - helpers$1.each(bodyItem.lines, maxLineWidth); - helpers$1.each(bodyItem.after, maxLineWidth); - }); - - // Reset back to 0 - widthPadding = 0; - - // Footer width - ctx.font = helpers$1.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily); - helpers$1.each(model.footer, maxLineWidth); - - // Add padding - width += 2 * model.xPadding; - - return { - width: width, - height: height - }; -} - -/** - * Helper to get the alignment of a tooltip given the size - */ -function determineAlignment(tooltip, size) { - var model = tooltip._model; - var chart = tooltip._chart; - var chartArea = tooltip._chart.chartArea; - var xAlign = 'center'; - var yAlign = 'center'; - - if (model.y < size.height) { - yAlign = 'top'; - } else if (model.y > (chart.height - size.height)) { - yAlign = 'bottom'; - } - - var lf, rf; // functions to determine left, right alignment - var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart - var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges - var midX = (chartArea.left + chartArea.right) / 2; - var midY = (chartArea.top + chartArea.bottom) / 2; - - if (yAlign === 'center') { - lf = function(x) { - return x <= midX; - }; - rf = function(x) { - return x > midX; - }; - } else { - lf = function(x) { - return x <= (size.width / 2); - }; - rf = function(x) { - return x >= (chart.width - (size.width / 2)); - }; - } - - olf = function(x) { - return x + size.width + model.caretSize + model.caretPadding > chart.width; - }; - orf = function(x) { - return x - size.width - model.caretSize - model.caretPadding < 0; - }; - yf = function(y) { - return y <= midY ? 'top' : 'bottom'; - }; - - if (lf(model.x)) { - xAlign = 'left'; - - // Is tooltip too wide and goes over the right side of the chart.? - if (olf(model.x)) { - xAlign = 'center'; - yAlign = yf(model.y); - } - } else if (rf(model.x)) { - xAlign = 'right'; - - // Is tooltip too wide and goes outside left edge of canvas? - if (orf(model.x)) { - xAlign = 'center'; - yAlign = yf(model.y); - } - } - - var opts = tooltip._options; - return { - xAlign: opts.xAlign ? opts.xAlign : xAlign, - yAlign: opts.yAlign ? opts.yAlign : yAlign - }; -} - -/** - * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment - */ -function getBackgroundPoint(vm, size, alignment, chart) { - // Background Position - var x = vm.x; - var y = vm.y; - - var caretSize = vm.caretSize; - var caretPadding = vm.caretPadding; - var cornerRadius = vm.cornerRadius; - var xAlign = alignment.xAlign; - var yAlign = alignment.yAlign; - var paddingAndSize = caretSize + caretPadding; - var radiusAndPadding = cornerRadius + caretPadding; - - if (xAlign === 'right') { - x -= size.width; - } else if (xAlign === 'center') { - x -= (size.width / 2); - if (x + size.width > chart.width) { - x = chart.width - size.width; - } - if (x < 0) { - x = 0; - } - } - - if (yAlign === 'top') { - y += paddingAndSize; - } else if (yAlign === 'bottom') { - y -= size.height + paddingAndSize; - } else { - y -= (size.height / 2); - } - - if (yAlign === 'center') { - if (xAlign === 'left') { - x += paddingAndSize; - } else if (xAlign === 'right') { - x -= paddingAndSize; - } - } else if (xAlign === 'left') { - x -= radiusAndPadding; - } else if (xAlign === 'right') { - x += radiusAndPadding; - } - - return { - x: x, - y: y - }; -} - -function getAlignedX(vm, align) { - return align === 'center' - ? vm.x + vm.width / 2 - : align === 'right' - ? vm.x + vm.width - vm.xPadding - : vm.x + vm.xPadding; -} - -/** - * Helper to build before and after body lines - */ -function getBeforeAfterBodyLines(callback) { - return pushOrConcat([], splitNewlines(callback)); -} - -var exports$4 = core_element.extend({ - initialize: function() { - this._model = getBaseModel(this._options); - this._lastActive = []; - }, - - // Get the title - // Args are: (tooltipItem, data) - getTitle: function() { - var me = this; - var opts = me._options; - var callbacks = opts.callbacks; - - var beforeTitle = callbacks.beforeTitle.apply(me, arguments); - var title = callbacks.title.apply(me, arguments); - var afterTitle = callbacks.afterTitle.apply(me, arguments); - - var lines = []; - lines = pushOrConcat(lines, splitNewlines(beforeTitle)); - lines = pushOrConcat(lines, splitNewlines(title)); - lines = pushOrConcat(lines, splitNewlines(afterTitle)); - - return lines; - }, - - // Args are: (tooltipItem, data) - getBeforeBody: function() { - return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments)); - }, - - // Args are: (tooltipItem, data) - getBody: function(tooltipItems, data) { - var me = this; - var callbacks = me._options.callbacks; - var bodyItems = []; - - helpers$1.each(tooltipItems, function(tooltipItem) { - var bodyItem = { - before: [], - lines: [], - after: [] - }; - pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data))); - pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data)); - pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data))); - - bodyItems.push(bodyItem); - }); - - return bodyItems; - }, - - // Args are: (tooltipItem, data) - getAfterBody: function() { - return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments)); - }, - - // Get the footer and beforeFooter and afterFooter lines - // Args are: (tooltipItem, data) - getFooter: function() { - var me = this; - var callbacks = me._options.callbacks; - - var beforeFooter = callbacks.beforeFooter.apply(me, arguments); - var footer = callbacks.footer.apply(me, arguments); - var afterFooter = callbacks.afterFooter.apply(me, arguments); - - var lines = []; - lines = pushOrConcat(lines, splitNewlines(beforeFooter)); - lines = pushOrConcat(lines, splitNewlines(footer)); - lines = pushOrConcat(lines, splitNewlines(afterFooter)); - - return lines; - }, - - update: function(changed) { - var me = this; - var opts = me._options; - - // Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition - // that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time - // which breaks any animations. - var existingModel = me._model; - var model = me._model = getBaseModel(opts); - var active = me._active; - - var data = me._data; - - // In the case where active.length === 0 we need to keep these at existing values for good animations - var alignment = { - xAlign: existingModel.xAlign, - yAlign: existingModel.yAlign - }; - var backgroundPoint = { - x: existingModel.x, - y: existingModel.y - }; - var tooltipSize = { - width: existingModel.width, - height: existingModel.height - }; - var tooltipPosition = { - x: existingModel.caretX, - y: existingModel.caretY - }; - - var i, len; - - if (active.length) { - model.opacity = 1; - - var labelColors = []; - var labelTextColors = []; - tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition); - - var tooltipItems = []; - for (i = 0, len = active.length; i < len; ++i) { - tooltipItems.push(createTooltipItem(active[i])); - } - - // If the user provided a filter function, use it to modify the tooltip items - if (opts.filter) { - tooltipItems = tooltipItems.filter(function(a) { - return opts.filter(a, data); - }); - } - - // If the user provided a sorting function, use it to modify the tooltip items - if (opts.itemSort) { - tooltipItems = tooltipItems.sort(function(a, b) { - return opts.itemSort(a, b, data); - }); - } - - // Determine colors for boxes - helpers$1.each(tooltipItems, function(tooltipItem) { - labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart)); - labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart)); - }); - - - // Build the Text Lines - model.title = me.getTitle(tooltipItems, data); - model.beforeBody = me.getBeforeBody(tooltipItems, data); - model.body = me.getBody(tooltipItems, data); - model.afterBody = me.getAfterBody(tooltipItems, data); - model.footer = me.getFooter(tooltipItems, data); - - // Initial positioning and colors - model.x = tooltipPosition.x; - model.y = tooltipPosition.y; - model.caretPadding = opts.caretPadding; - model.labelColors = labelColors; - model.labelTextColors = labelTextColors; - - // data points - model.dataPoints = tooltipItems; - - // We need to determine alignment of the tooltip - tooltipSize = getTooltipSize(this, model); - alignment = determineAlignment(this, tooltipSize); - // Final Size and Position - backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart); - } else { - model.opacity = 0; - } - - model.xAlign = alignment.xAlign; - model.yAlign = alignment.yAlign; - model.x = backgroundPoint.x; - model.y = backgroundPoint.y; - model.width = tooltipSize.width; - model.height = tooltipSize.height; - - // Point where the caret on the tooltip points to - model.caretX = tooltipPosition.x; - model.caretY = tooltipPosition.y; - - me._model = model; - - if (changed && opts.custom) { - opts.custom.call(me, model); - } - - return me; - }, - - drawCaret: function(tooltipPoint, size) { - var ctx = this._chart.ctx; - var vm = this._view; - var caretPosition = this.getCaretPosition(tooltipPoint, size, vm); - - ctx.lineTo(caretPosition.x1, caretPosition.y1); - ctx.lineTo(caretPosition.x2, caretPosition.y2); - ctx.lineTo(caretPosition.x3, caretPosition.y3); - }, - getCaretPosition: function(tooltipPoint, size, vm) { - var x1, x2, x3, y1, y2, y3; - var caretSize = vm.caretSize; - var cornerRadius = vm.cornerRadius; - var xAlign = vm.xAlign; - var yAlign = vm.yAlign; - var ptX = tooltipPoint.x; - var ptY = tooltipPoint.y; - var width = size.width; - var height = size.height; - - if (yAlign === 'center') { - y2 = ptY + (height / 2); - - if (xAlign === 'left') { - x1 = ptX; - x2 = x1 - caretSize; - x3 = x1; - - y1 = y2 + caretSize; - y3 = y2 - caretSize; - } else { - x1 = ptX + width; - x2 = x1 + caretSize; - x3 = x1; - - y1 = y2 - caretSize; - y3 = y2 + caretSize; - } - } else { - if (xAlign === 'left') { - x2 = ptX + cornerRadius + (caretSize); - x1 = x2 - caretSize; - x3 = x2 + caretSize; - } else if (xAlign === 'right') { - x2 = ptX + width - cornerRadius - caretSize; - x1 = x2 - caretSize; - x3 = x2 + caretSize; - } else { - x2 = vm.caretX; - x1 = x2 - caretSize; - x3 = x2 + caretSize; - } - if (yAlign === 'top') { - y1 = ptY; - y2 = y1 - caretSize; - y3 = y1; - } else { - y1 = ptY + height; - y2 = y1 + caretSize; - y3 = y1; - // invert drawing order - var tmp = x3; - x3 = x1; - x1 = tmp; - } - } - return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3}; - }, - - drawTitle: function(pt, vm, ctx) { - var title = vm.title; - var length = title.length; - var titleFontSize, titleSpacing, i; - - if (length) { - var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width); - - pt.x = getAlignedX(vm, vm._titleAlign); - - ctx.textAlign = rtlHelper.textAlign(vm._titleAlign); - ctx.textBaseline = 'middle'; - - titleFontSize = vm.titleFontSize; - titleSpacing = vm.titleSpacing; - - ctx.fillStyle = vm.titleFontColor; - ctx.font = helpers$1.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily); - - for (i = 0; i < length; ++i) { - ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFontSize / 2); - pt.y += titleFontSize + titleSpacing; // Line Height and spacing - - if (i + 1 === length) { - pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing - } - } - } - }, - - drawBody: function(pt, vm, ctx) { - var bodyFontSize = vm.bodyFontSize; - var bodySpacing = vm.bodySpacing; - var bodyAlign = vm._bodyAlign; - var body = vm.body; - var drawColorBoxes = vm.displayColors; - var xLinePadding = 0; - var colorX = drawColorBoxes ? getAlignedX(vm, 'left') : 0; - - var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width); - - var fillLineOfText = function(line) { - ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyFontSize / 2); - pt.y += bodyFontSize + bodySpacing; - }; - - var bodyItem, textColor, labelColors, lines, i, j, ilen, jlen; - var bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign); - - ctx.textAlign = bodyAlign; - ctx.textBaseline = 'middle'; - ctx.font = helpers$1.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily); - - pt.x = getAlignedX(vm, bodyAlignForCalculation); - - // Before body lines - ctx.fillStyle = vm.bodyFontColor; - helpers$1.each(vm.beforeBody, fillLineOfText); - - xLinePadding = drawColorBoxes && bodyAlignForCalculation !== 'right' - ? bodyAlign === 'center' ? (bodyFontSize / 2 + 1) : (bodyFontSize + 2) - : 0; - - // Draw body lines now - for (i = 0, ilen = body.length; i < ilen; ++i) { - bodyItem = body[i]; - textColor = vm.labelTextColors[i]; - labelColors = vm.labelColors[i]; - - ctx.fillStyle = textColor; - helpers$1.each(bodyItem.before, fillLineOfText); - - lines = bodyItem.lines; - for (j = 0, jlen = lines.length; j < jlen; ++j) { - // Draw Legend-like boxes if needed - if (drawColorBoxes) { - var rtlColorX = rtlHelper.x(colorX); - - // Fill a white rect so that colours merge nicely if the opacity is < 1 - ctx.fillStyle = vm.legendColorBackground; - ctx.fillRect(rtlHelper.leftForLtr(rtlColorX, bodyFontSize), pt.y, bodyFontSize, bodyFontSize); - - // Border - ctx.lineWidth = 1; - ctx.strokeStyle = labelColors.borderColor; - ctx.strokeRect(rtlHelper.leftForLtr(rtlColorX, bodyFontSize), pt.y, bodyFontSize, bodyFontSize); - - // Inner square - ctx.fillStyle = labelColors.backgroundColor; - ctx.fillRect(rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), bodyFontSize - 2), pt.y + 1, bodyFontSize - 2, bodyFontSize - 2); - ctx.fillStyle = textColor; - } - - fillLineOfText(lines[j]); - } - - helpers$1.each(bodyItem.after, fillLineOfText); - } - - // Reset back to 0 for after body - xLinePadding = 0; - - // After body lines - helpers$1.each(vm.afterBody, fillLineOfText); - pt.y -= bodySpacing; // Remove last body spacing - }, - - drawFooter: function(pt, vm, ctx) { - var footer = vm.footer; - var length = footer.length; - var footerFontSize, i; - - if (length) { - var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width); - - pt.x = getAlignedX(vm, vm._footerAlign); - pt.y += vm.footerMarginTop; - - ctx.textAlign = rtlHelper.textAlign(vm._footerAlign); - ctx.textBaseline = 'middle'; - - footerFontSize = vm.footerFontSize; - - ctx.fillStyle = vm.footerFontColor; - ctx.font = helpers$1.fontString(footerFontSize, vm._footerFontStyle, vm._footerFontFamily); - - for (i = 0; i < length; ++i) { - ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFontSize / 2); - pt.y += footerFontSize + vm.footerSpacing; - } - } - }, - - drawBackground: function(pt, vm, ctx, tooltipSize) { - ctx.fillStyle = vm.backgroundColor; - ctx.strokeStyle = vm.borderColor; - ctx.lineWidth = vm.borderWidth; - var xAlign = vm.xAlign; - var yAlign = vm.yAlign; - var x = pt.x; - var y = pt.y; - var width = tooltipSize.width; - var height = tooltipSize.height; - var radius = vm.cornerRadius; - - ctx.beginPath(); - ctx.moveTo(x + radius, y); - if (yAlign === 'top') { - this.drawCaret(pt, tooltipSize); - } - ctx.lineTo(x + width - radius, y); - ctx.quadraticCurveTo(x + width, y, x + width, y + radius); - if (yAlign === 'center' && xAlign === 'right') { - this.drawCaret(pt, tooltipSize); - } - ctx.lineTo(x + width, y + height - radius); - ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height); - if (yAlign === 'bottom') { - this.drawCaret(pt, tooltipSize); - } - ctx.lineTo(x + radius, y + height); - ctx.quadraticCurveTo(x, y + height, x, y + height - radius); - if (yAlign === 'center' && xAlign === 'left') { - this.drawCaret(pt, tooltipSize); - } - ctx.lineTo(x, y + radius); - ctx.quadraticCurveTo(x, y, x + radius, y); - ctx.closePath(); - - ctx.fill(); - - if (vm.borderWidth > 0) { - ctx.stroke(); - } - }, - - draw: function() { - var ctx = this._chart.ctx; - var vm = this._view; - - if (vm.opacity === 0) { - return; - } - - var tooltipSize = { - width: vm.width, - height: vm.height - }; - var pt = { - x: vm.x, - y: vm.y - }; - - // IE11/Edge does not like very small opacities, so snap to 0 - var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity; - - // Truthy/falsey value for empty tooltip - var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length; - - if (this._options.enabled && hasTooltipContent) { - ctx.save(); - ctx.globalAlpha = opacity; - - // Draw Background - this.drawBackground(pt, vm, ctx, tooltipSize); - - // Draw Title, Body, and Footer - pt.y += vm.yPadding; - - helpers$1.rtl.overrideTextDirection(ctx, vm.textDirection); - - // Titles - this.drawTitle(pt, vm, ctx); - - // Body - this.drawBody(pt, vm, ctx); - - // Footer - this.drawFooter(pt, vm, ctx); - - helpers$1.rtl.restoreTextDirection(ctx, vm.textDirection); - - ctx.restore(); - } - }, - - /** - * Handle an event - * @private - * @param {IEvent} event - The event to handle - * @returns {boolean} true if the tooltip changed - */ - handleEvent: function(e) { - var me = this; - var options = me._options; - var changed = false; - - me._lastActive = me._lastActive || []; - - // Find Active Elements for tooltips - if (e.type === 'mouseout') { - me._active = []; - } else { - me._active = me._chart.getElementsAtEventForMode(e, options.mode, options); - if (options.reverse) { - me._active.reverse(); - } - } - - // Remember Last Actives - changed = !helpers$1.arrayEquals(me._active, me._lastActive); - - // Only handle target event on tooltip change - if (changed) { - me._lastActive = me._active; - - if (options.enabled || options.custom) { - me._eventPosition = { - x: e.x, - y: e.y - }; - - me.update(true); - me.pivot(); - } - } - - return changed; - } -}); - -/** - * @namespace Chart.Tooltip.positioners - */ -var positioners_1 = positioners; - -var core_tooltip = exports$4; -core_tooltip.positioners = positioners_1; - -var valueOrDefault$9 = helpers$1.valueOrDefault; - -core_defaults._set('global', { - elements: {}, - events: [ - 'mousemove', - 'mouseout', - 'click', - 'touchstart', - 'touchmove' - ], - hover: { - onHover: null, - mode: 'nearest', - intersect: true, - animationDuration: 400 - }, - onClick: null, - maintainAspectRatio: true, - responsive: true, - responsiveAnimationDuration: 0 -}); - -/** - * Recursively merge the given config objects representing the `scales` option - * by incorporating scale defaults in `xAxes` and `yAxes` array items, then - * returns a deep copy of the result, thus doesn't alter inputs. - */ -function mergeScaleConfig(/* config objects ... */) { - return helpers$1.merge({}, [].slice.call(arguments), { - merger: function(key, target, source, options) { - if (key === 'xAxes' || key === 'yAxes') { - var slen = source[key].length; - var i, type, scale; - - if (!target[key]) { - target[key] = []; - } - - for (i = 0; i < slen; ++i) { - scale = source[key][i]; - type = valueOrDefault$9(scale.type, key === 'xAxes' ? 'category' : 'linear'); - - if (i >= target[key].length) { - target[key].push({}); - } - - if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) { - // new/untyped scale or type changed: let's apply the new defaults - // then merge source scale to correctly overwrite the defaults. - helpers$1.merge(target[key][i], [core_scaleService.getScaleDefaults(type), scale]); - } else { - // scales type are the same - helpers$1.merge(target[key][i], scale); - } - } - } else { - helpers$1._merger(key, target, source, options); - } - } - }); -} - -/** - * Recursively merge the given config objects as the root options by handling - * default scale options for the `scales` and `scale` properties, then returns - * a deep copy of the result, thus doesn't alter inputs. - */ -function mergeConfig(/* config objects ... */) { - return helpers$1.merge({}, [].slice.call(arguments), { - merger: function(key, target, source, options) { - var tval = target[key] || {}; - var sval = source[key]; - - if (key === 'scales') { - // scale config merging is complex. Add our own function here for that - target[key] = mergeScaleConfig(tval, sval); - } else if (key === 'scale') { - // used in polar area & radar charts since there is only one scale - target[key] = helpers$1.merge(tval, [core_scaleService.getScaleDefaults(sval.type), sval]); - } else { - helpers$1._merger(key, target, source, options); - } - } - }); -} - -function initConfig(config) { - config = config || {}; - - // Do NOT use mergeConfig for the data object because this method merges arrays - // and so would change references to labels and datasets, preventing data updates. - var data = config.data = config.data || {}; - data.datasets = data.datasets || []; - data.labels = data.labels || []; - - config.options = mergeConfig( - core_defaults.global, - core_defaults[config.type], - config.options || {}); - - return config; -} - -function updateConfig(chart) { - var newOptions = chart.options; - - helpers$1.each(chart.scales, function(scale) { - core_layouts.removeBox(chart, scale); - }); - - newOptions = mergeConfig( - core_defaults.global, - core_defaults[chart.config.type], - newOptions); - - chart.options = chart.config.options = newOptions; - chart.ensureScalesHaveIDs(); - chart.buildOrUpdateScales(); - - // Tooltip - chart.tooltip._options = newOptions.tooltips; - chart.tooltip.initialize(); -} - -function nextAvailableScaleId(axesOpts, prefix, index) { - var id; - var hasId = function(obj) { - return obj.id === id; - }; - - do { - id = prefix + index++; - } while (helpers$1.findIndex(axesOpts, hasId) >= 0); - - return id; -} - -function positionIsHorizontal(position) { - return position === 'top' || position === 'bottom'; -} - -function compare2Level(l1, l2) { - return function(a, b) { - return a[l1] === b[l1] - ? a[l2] - b[l2] - : a[l1] - b[l1]; - }; -} - -var Chart = function(item, config) { - this.construct(item, config); - return this; -}; - -helpers$1.extend(Chart.prototype, /** @lends Chart */ { - /** - * @private - */ - construct: function(item, config) { - var me = this; - - config = initConfig(config); - - var context = platform.acquireContext(item, config); - var canvas = context && context.canvas; - var height = canvas && canvas.height; - var width = canvas && canvas.width; - - me.id = helpers$1.uid(); - me.ctx = context; - me.canvas = canvas; - me.config = config; - me.width = width; - me.height = height; - me.aspectRatio = height ? width / height : null; - me.options = config.options; - me._bufferedRender = false; - me._layers = []; - - /** - * Provided for backward compatibility, Chart and Chart.Controller have been merged, - * the "instance" still need to be defined since it might be called from plugins. - * @prop Chart#chart - * @deprecated since version 2.6.0 - * @todo remove at version 3 - * @private - */ - me.chart = me; - me.controller = me; // chart.chart.controller #inception - - // Add the chart instance to the global namespace - Chart.instances[me.id] = me; - - // Define alias to the config data: `chart.data === chart.config.data` - Object.defineProperty(me, 'data', { - get: function() { - return me.config.data; - }, - set: function(value) { - me.config.data = value; - } - }); - - if (!context || !canvas) { - // The given item is not a compatible context2d element, let's return before finalizing - // the chart initialization but after setting basic chart / controller properties that - // can help to figure out that the chart is not valid (e.g chart.canvas !== null); - // https://github.com/chartjs/Chart.js/issues/2807 - console.error("Failed to create chart: can't acquire context from the given item"); - return; - } - - me.initialize(); - me.update(); - }, - - /** - * @private - */ - initialize: function() { - var me = this; - - // Before init plugin notification - core_plugins.notify(me, 'beforeInit'); - - helpers$1.retinaScale(me, me.options.devicePixelRatio); - - me.bindEvents(); - - if (me.options.responsive) { - // Initial resize before chart draws (must be silent to preserve initial animations). - me.resize(true); - } - - me.initToolTip(); - - // After init plugin notification - core_plugins.notify(me, 'afterInit'); - - return me; - }, - - clear: function() { - helpers$1.canvas.clear(this); - return this; - }, - - stop: function() { - // Stops any current animation loop occurring - core_animations.cancelAnimation(this); - return this; - }, - - resize: function(silent) { - var me = this; - var options = me.options; - var canvas = me.canvas; - var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null; - - // the canvas render width and height will be casted to integers so make sure that - // the canvas display style uses the same integer values to avoid blurring effect. - - // Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed - var newWidth = Math.max(0, Math.floor(helpers$1.getMaximumWidth(canvas))); - var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers$1.getMaximumHeight(canvas))); - - if (me.width === newWidth && me.height === newHeight) { - return; - } - - canvas.width = me.width = newWidth; - canvas.height = me.height = newHeight; - canvas.style.width = newWidth + 'px'; - canvas.style.height = newHeight + 'px'; - - helpers$1.retinaScale(me, options.devicePixelRatio); - - if (!silent) { - // Notify any plugins about the resize - var newSize = {width: newWidth, height: newHeight}; - core_plugins.notify(me, 'resize', [newSize]); - - // Notify of resize - if (options.onResize) { - options.onResize(me, newSize); - } - - me.stop(); - me.update({ - duration: options.responsiveAnimationDuration - }); - } - }, - - ensureScalesHaveIDs: function() { - var options = this.options; - var scalesOptions = options.scales || {}; - var scaleOptions = options.scale; - - helpers$1.each(scalesOptions.xAxes, function(xAxisOptions, index) { - if (!xAxisOptions.id) { - xAxisOptions.id = nextAvailableScaleId(scalesOptions.xAxes, 'x-axis-', index); - } - }); - - helpers$1.each(scalesOptions.yAxes, function(yAxisOptions, index) { - if (!yAxisOptions.id) { - yAxisOptions.id = nextAvailableScaleId(scalesOptions.yAxes, 'y-axis-', index); - } - }); - - if (scaleOptions) { - scaleOptions.id = scaleOptions.id || 'scale'; - } - }, - - /** - * Builds a map of scale ID to scale object for future lookup. - */ - buildOrUpdateScales: function() { - var me = this; - var options = me.options; - var scales = me.scales || {}; - var items = []; - var updated = Object.keys(scales).reduce(function(obj, id) { - obj[id] = false; - return obj; - }, {}); - - if (options.scales) { - items = items.concat( - (options.scales.xAxes || []).map(function(xAxisOptions) { - return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'}; - }), - (options.scales.yAxes || []).map(function(yAxisOptions) { - return {options: yAxisOptions, dtype: 'linear', dposition: 'left'}; - }) - ); - } - - if (options.scale) { - items.push({ - options: options.scale, - dtype: 'radialLinear', - isDefault: true, - dposition: 'chartArea' - }); - } - - helpers$1.each(items, function(item) { - var scaleOptions = item.options; - var id = scaleOptions.id; - var scaleType = valueOrDefault$9(scaleOptions.type, item.dtype); - - if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) { - scaleOptions.position = item.dposition; - } - - updated[id] = true; - var scale = null; - if (id in scales && scales[id].type === scaleType) { - scale = scales[id]; - scale.options = scaleOptions; - scale.ctx = me.ctx; - scale.chart = me; - } else { - var scaleClass = core_scaleService.getScaleConstructor(scaleType); - if (!scaleClass) { - return; - } - scale = new scaleClass({ - id: id, - type: scaleType, - options: scaleOptions, - ctx: me.ctx, - chart: me - }); - scales[scale.id] = scale; - } - - scale.mergeTicksOptions(); - - // TODO(SB): I think we should be able to remove this custom case (options.scale) - // and consider it as a regular scale part of the "scales"" map only! This would - // make the logic easier and remove some useless? custom code. - if (item.isDefault) { - me.scale = scale; - } - }); - // clear up discarded scales - helpers$1.each(updated, function(hasUpdated, id) { - if (!hasUpdated) { - delete scales[id]; - } - }); - - me.scales = scales; - - core_scaleService.addScalesToLayout(this); - }, - - buildOrUpdateControllers: function() { - var me = this; - var newControllers = []; - var datasets = me.data.datasets; - var i, ilen; - - for (i = 0, ilen = datasets.length; i < ilen; i++) { - var dataset = datasets[i]; - var meta = me.getDatasetMeta(i); - var type = dataset.type || me.config.type; - - if (meta.type && meta.type !== type) { - me.destroyDatasetMeta(i); - meta = me.getDatasetMeta(i); - } - meta.type = type; - meta.order = dataset.order || 0; - meta.index = i; - - if (meta.controller) { - meta.controller.updateIndex(i); - meta.controller.linkScales(); - } else { - var ControllerClass = controllers[meta.type]; - if (ControllerClass === undefined) { - throw new Error('"' + meta.type + '" is not a chart type.'); - } - - meta.controller = new ControllerClass(me, i); - newControllers.push(meta.controller); - } - } - - return newControllers; - }, - - /** - * Reset the elements of all datasets - * @private - */ - resetElements: function() { - var me = this; - helpers$1.each(me.data.datasets, function(dataset, datasetIndex) { - me.getDatasetMeta(datasetIndex).controller.reset(); - }, me); - }, - - /** - * Resets the chart back to it's state before the initial animation - */ - reset: function() { - this.resetElements(); - this.tooltip.initialize(); - }, - - update: function(config) { - var me = this; - var i, ilen; - - if (!config || typeof config !== 'object') { - // backwards compatibility - config = { - duration: config, - lazy: arguments[1] - }; - } - - updateConfig(me); - - // plugins options references might have change, let's invalidate the cache - // https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167 - core_plugins._invalidate(me); - - if (core_plugins.notify(me, 'beforeUpdate') === false) { - return; - } - - // In case the entire data object changed - me.tooltip._data = me.data; - - // Make sure dataset controllers are updated and new controllers are reset - var newControllers = me.buildOrUpdateControllers(); - - // Make sure all dataset controllers have correct meta data counts - for (i = 0, ilen = me.data.datasets.length; i < ilen; i++) { - me.getDatasetMeta(i).controller.buildOrUpdateElements(); - } - - me.updateLayout(); - - // Can only reset the new controllers after the scales have been updated - if (me.options.animation && me.options.animation.duration) { - helpers$1.each(newControllers, function(controller) { - controller.reset(); - }); - } - - me.updateDatasets(); - - // Need to reset tooltip in case it is displayed with elements that are removed - // after update. - me.tooltip.initialize(); - - // Last active contains items that were previously in the tooltip. - // When we reset the tooltip, we need to clear it - me.lastActive = []; - - // Do this before render so that any plugins that need final scale updates can use it - core_plugins.notify(me, 'afterUpdate'); - - me._layers.sort(compare2Level('z', '_idx')); - - if (me._bufferedRender) { - me._bufferedRequest = { - duration: config.duration, - easing: config.easing, - lazy: config.lazy - }; - } else { - me.render(config); - } - }, - - /** - * Updates the chart layout unless a plugin returns `false` to the `beforeLayout` - * hook, in which case, plugins will not be called on `afterLayout`. - * @private - */ - updateLayout: function() { - var me = this; - - if (core_plugins.notify(me, 'beforeLayout') === false) { - return; - } - - core_layouts.update(this, this.width, this.height); - - me._layers = []; - helpers$1.each(me.boxes, function(box) { - // _configure is called twice, once in core.scale.update and once here. - // Here the boxes are fully updated and at their final positions. - if (box._configure) { - box._configure(); - } - me._layers.push.apply(me._layers, box._layers()); - }, me); - - me._layers.forEach(function(item, index) { - item._idx = index; - }); - - /** - * Provided for backward compatibility, use `afterLayout` instead. - * @method IPlugin#afterScaleUpdate - * @deprecated since version 2.5.0 - * @todo remove at version 3 - * @private - */ - core_plugins.notify(me, 'afterScaleUpdate'); - core_plugins.notify(me, 'afterLayout'); - }, - - /** - * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate` - * hook, in which case, plugins will not be called on `afterDatasetsUpdate`. - * @private - */ - updateDatasets: function() { - var me = this; - - if (core_plugins.notify(me, 'beforeDatasetsUpdate') === false) { - return; - } - - for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { - me.updateDataset(i); - } - - core_plugins.notify(me, 'afterDatasetsUpdate'); - }, - - /** - * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate` - * hook, in which case, plugins will not be called on `afterDatasetUpdate`. - * @private - */ - updateDataset: function(index) { - var me = this; - var meta = me.getDatasetMeta(index); - var args = { - meta: meta, - index: index - }; - - if (core_plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) { - return; - } - - meta.controller._update(); - - core_plugins.notify(me, 'afterDatasetUpdate', [args]); - }, - - render: function(config) { - var me = this; - - if (!config || typeof config !== 'object') { - // backwards compatibility - config = { - duration: config, - lazy: arguments[1] - }; - } - - var animationOptions = me.options.animation; - var duration = valueOrDefault$9(config.duration, animationOptions && animationOptions.duration); - var lazy = config.lazy; - - if (core_plugins.notify(me, 'beforeRender') === false) { - return; - } - - var onComplete = function(animation) { - core_plugins.notify(me, 'afterRender'); - helpers$1.callback(animationOptions && animationOptions.onComplete, [animation], me); - }; - - if (animationOptions && duration) { - var animation = new core_animation({ - numSteps: duration / 16.66, // 60 fps - easing: config.easing || animationOptions.easing, - - render: function(chart, animationObject) { - var easingFunction = helpers$1.easing.effects[animationObject.easing]; - var currentStep = animationObject.currentStep; - var stepDecimal = currentStep / animationObject.numSteps; - - chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep); - }, - - onAnimationProgress: animationOptions.onProgress, - onAnimationComplete: onComplete - }); - - core_animations.addAnimation(me, animation, duration, lazy); - } else { - me.draw(); - - // See https://github.com/chartjs/Chart.js/issues/3781 - onComplete(new core_animation({numSteps: 0, chart: me})); - } - - return me; - }, - - draw: function(easingValue) { - var me = this; - var i, layers; - - me.clear(); - - if (helpers$1.isNullOrUndef(easingValue)) { - easingValue = 1; - } - - me.transition(easingValue); - - if (me.width <= 0 || me.height <= 0) { - return; - } - - if (core_plugins.notify(me, 'beforeDraw', [easingValue]) === false) { - return; - } - - // Because of plugin hooks (before/afterDatasetsDraw), datasets can't - // currently be part of layers. Instead, we draw - // layers <= 0 before(default, backward compat), and the rest after - layers = me._layers; - for (i = 0; i < layers.length && layers[i].z <= 0; ++i) { - layers[i].draw(me.chartArea); - } - - me.drawDatasets(easingValue); - - // Rest of layers - for (; i < layers.length; ++i) { - layers[i].draw(me.chartArea); - } - - me._drawTooltip(easingValue); - - core_plugins.notify(me, 'afterDraw', [easingValue]); - }, - - /** - * @private - */ - transition: function(easingValue) { - var me = this; - - for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) { - if (me.isDatasetVisible(i)) { - me.getDatasetMeta(i).controller.transition(easingValue); - } - } - - me.tooltip.transition(easingValue); - }, - - /** - * @private - */ - _getSortedDatasetMetas: function(filterVisible) { - var me = this; - var datasets = me.data.datasets || []; - var result = []; - var i, ilen; - - for (i = 0, ilen = datasets.length; i < ilen; ++i) { - if (!filterVisible || me.isDatasetVisible(i)) { - result.push(me.getDatasetMeta(i)); - } - } - - result.sort(compare2Level('order', 'index')); - - return result; - }, - - /** - * @private - */ - _getSortedVisibleDatasetMetas: function() { - return this._getSortedDatasetMetas(true); - }, - - /** - * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw` - * hook, in which case, plugins will not be called on `afterDatasetsDraw`. - * @private - */ - drawDatasets: function(easingValue) { - var me = this; - var metasets, i; - - if (core_plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) { - return; - } - - metasets = me._getSortedVisibleDatasetMetas(); - for (i = metasets.length - 1; i >= 0; --i) { - me.drawDataset(metasets[i], easingValue); - } - - core_plugins.notify(me, 'afterDatasetsDraw', [easingValue]); - }, - - /** - * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw` - * hook, in which case, plugins will not be called on `afterDatasetDraw`. - * @private - */ - drawDataset: function(meta, easingValue) { - var me = this; - var args = { - meta: meta, - index: meta.index, - easingValue: easingValue - }; - - if (core_plugins.notify(me, 'beforeDatasetDraw', [args]) === false) { - return; - } - - meta.controller.draw(easingValue); - - core_plugins.notify(me, 'afterDatasetDraw', [args]); - }, - - /** - * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw` - * hook, in which case, plugins will not be called on `afterTooltipDraw`. - * @private - */ - _drawTooltip: function(easingValue) { - var me = this; - var tooltip = me.tooltip; - var args = { - tooltip: tooltip, - easingValue: easingValue - }; - - if (core_plugins.notify(me, 'beforeTooltipDraw', [args]) === false) { - return; - } - - tooltip.draw(); - - core_plugins.notify(me, 'afterTooltipDraw', [args]); - }, - - /** - * Get the single element that was clicked on - * @return An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw - */ - getElementAtEvent: function(e) { - return core_interaction.modes.single(this, e); - }, - - getElementsAtEvent: function(e) { - return core_interaction.modes.label(this, e, {intersect: true}); - }, - - getElementsAtXAxis: function(e) { - return core_interaction.modes['x-axis'](this, e, {intersect: true}); - }, - - getElementsAtEventForMode: function(e, mode, options) { - var method = core_interaction.modes[mode]; - if (typeof method === 'function') { - return method(this, e, options); - } - - return []; - }, - - getDatasetAtEvent: function(e) { - return core_interaction.modes.dataset(this, e, {intersect: true}); - }, - - getDatasetMeta: function(datasetIndex) { - var me = this; - var dataset = me.data.datasets[datasetIndex]; - if (!dataset._meta) { - dataset._meta = {}; - } - - var meta = dataset._meta[me.id]; - if (!meta) { - meta = dataset._meta[me.id] = { - type: null, - data: [], - dataset: null, - controller: null, - hidden: null, // See isDatasetVisible() comment - xAxisID: null, - yAxisID: null, - order: dataset.order || 0, - index: datasetIndex - }; - } - - return meta; - }, - - getVisibleDatasetCount: function() { - var count = 0; - for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) { - if (this.isDatasetVisible(i)) { - count++; - } - } - return count; - }, - - isDatasetVisible: function(datasetIndex) { - var meta = this.getDatasetMeta(datasetIndex); - - // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false, - // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned. - return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden; - }, - - generateLegend: function() { - return this.options.legendCallback(this); - }, - - /** - * @private - */ - destroyDatasetMeta: function(datasetIndex) { - var id = this.id; - var dataset = this.data.datasets[datasetIndex]; - var meta = dataset._meta && dataset._meta[id]; - - if (meta) { - meta.controller.destroy(); - delete dataset._meta[id]; - } - }, - - destroy: function() { - var me = this; - var canvas = me.canvas; - var i, ilen; - - me.stop(); - - // dataset controllers need to cleanup associated data - for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { - me.destroyDatasetMeta(i); - } - - if (canvas) { - me.unbindEvents(); - helpers$1.canvas.clear(me); - platform.releaseContext(me.ctx); - me.canvas = null; - me.ctx = null; - } - - core_plugins.notify(me, 'destroy'); - - delete Chart.instances[me.id]; - }, - - toBase64Image: function() { - return this.canvas.toDataURL.apply(this.canvas, arguments); - }, - - initToolTip: function() { - var me = this; - me.tooltip = new core_tooltip({ - _chart: me, - _chartInstance: me, // deprecated, backward compatibility - _data: me.data, - _options: me.options.tooltips - }, me); - }, - - /** - * @private - */ - bindEvents: function() { - var me = this; - var listeners = me._listeners = {}; - var listener = function() { - me.eventHandler.apply(me, arguments); - }; - - helpers$1.each(me.options.events, function(type) { - platform.addEventListener(me, type, listener); - listeners[type] = listener; - }); - - // Elements used to detect size change should not be injected for non responsive charts. - // See https://github.com/chartjs/Chart.js/issues/2210 - if (me.options.responsive) { - listener = function() { - me.resize(); - }; - - platform.addEventListener(me, 'resize', listener); - listeners.resize = listener; - } - }, - - /** - * @private - */ - unbindEvents: function() { - var me = this; - var listeners = me._listeners; - if (!listeners) { - return; - } - - delete me._listeners; - helpers$1.each(listeners, function(listener, type) { - platform.removeEventListener(me, type, listener); - }); - }, - - updateHoverStyle: function(elements, mode, enabled) { - var prefix = enabled ? 'set' : 'remove'; - var element, i, ilen; - - for (i = 0, ilen = elements.length; i < ilen; ++i) { - element = elements[i]; - if (element) { - this.getDatasetMeta(element._datasetIndex).controller[prefix + 'HoverStyle'](element); - } - } - - if (mode === 'dataset') { - this.getDatasetMeta(elements[0]._datasetIndex).controller['_' + prefix + 'DatasetHoverStyle'](); - } - }, - - /** - * @private - */ - eventHandler: function(e) { - var me = this; - var tooltip = me.tooltip; - - if (core_plugins.notify(me, 'beforeEvent', [e]) === false) { - return; - } - - // Buffer any update calls so that renders do not occur - me._bufferedRender = true; - me._bufferedRequest = null; - - var changed = me.handleEvent(e); - // for smooth tooltip animations issue #4989 - // the tooltip should be the source of change - // Animation check workaround: - // tooltip._start will be null when tooltip isn't animating - if (tooltip) { - changed = tooltip._start - ? tooltip.handleEvent(e) - : changed | tooltip.handleEvent(e); - } - - core_plugins.notify(me, 'afterEvent', [e]); - - var bufferedRequest = me._bufferedRequest; - if (bufferedRequest) { - // If we have an update that was triggered, we need to do a normal render - me.render(bufferedRequest); - } else if (changed && !me.animating) { - // If entering, leaving, or changing elements, animate the change via pivot - me.stop(); - - // We only need to render at this point. Updating will cause scales to be - // recomputed generating flicker & using more memory than necessary. - me.render({ - duration: me.options.hover.animationDuration, - lazy: true - }); - } - - me._bufferedRender = false; - me._bufferedRequest = null; - - return me; - }, - - /** - * Handle an event - * @private - * @param {IEvent} event the event to handle - * @return {boolean} true if the chart needs to re-render - */ - handleEvent: function(e) { - var me = this; - var options = me.options || {}; - var hoverOptions = options.hover; - var changed = false; - - me.lastActive = me.lastActive || []; - - // Find Active Elements for hover and tooltips - if (e.type === 'mouseout') { - me.active = []; - } else { - me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions); - } - - // Invoke onHover hook - // Need to call with native event here to not break backwards compatibility - helpers$1.callback(options.onHover || options.hover.onHover, [e.native, me.active], me); - - if (e.type === 'mouseup' || e.type === 'click') { - if (options.onClick) { - // Use e.native here for backwards compatibility - options.onClick.call(me, e.native, me.active); - } - } - - // Remove styling for last active (even if it may still be active) - if (me.lastActive.length) { - me.updateHoverStyle(me.lastActive, hoverOptions.mode, false); - } - - // Built in hover styling - if (me.active.length && hoverOptions.mode) { - me.updateHoverStyle(me.active, hoverOptions.mode, true); - } - - changed = !helpers$1.arrayEquals(me.active, me.lastActive); - - // Remember Last Actives - me.lastActive = me.active; - - return changed; - } -}); - -/** - * NOTE(SB) We actually don't use this container anymore but we need to keep it - * for backward compatibility. Though, it can still be useful for plugins that - * would need to work on multiple charts?! - */ -Chart.instances = {}; - -var core_controller = Chart; - -// DEPRECATIONS - -/** - * Provided for backward compatibility, use Chart instead. - * @class Chart.Controller - * @deprecated since version 2.6 - * @todo remove at version 3 - * @private - */ -Chart.Controller = Chart; - -/** - * Provided for backward compatibility, not available anymore. - * @namespace Chart - * @deprecated since version 2.8 - * @todo remove at version 3 - * @private - */ -Chart.types = {}; - -/** - * Provided for backward compatibility, not available anymore. - * @namespace Chart.helpers.configMerge - * @deprecated since version 2.8.0 - * @todo remove at version 3 - * @private - */ -helpers$1.configMerge = mergeConfig; - -/** - * Provided for backward compatibility, not available anymore. - * @namespace Chart.helpers.scaleMerge - * @deprecated since version 2.8.0 - * @todo remove at version 3 - * @private - */ -helpers$1.scaleMerge = mergeScaleConfig; - -var core_helpers = function() { - - // -- Basic js utility methods - - helpers$1.where = function(collection, filterCallback) { - if (helpers$1.isArray(collection) && Array.prototype.filter) { - return collection.filter(filterCallback); - } - var filtered = []; - - helpers$1.each(collection, function(item) { - if (filterCallback(item)) { - filtered.push(item); - } - }); - - return filtered; - }; - helpers$1.findIndex = Array.prototype.findIndex ? - function(array, callback, scope) { - return array.findIndex(callback, scope); - } : - function(array, callback, scope) { - scope = scope === undefined ? array : scope; - for (var i = 0, ilen = array.length; i < ilen; ++i) { - if (callback.call(scope, array[i], i, array)) { - return i; - } - } - return -1; - }; - helpers$1.findNextWhere = function(arrayToSearch, filterCallback, startIndex) { - // Default to start of the array - if (helpers$1.isNullOrUndef(startIndex)) { - startIndex = -1; - } - for (var i = startIndex + 1; i < arrayToSearch.length; i++) { - var currentItem = arrayToSearch[i]; - if (filterCallback(currentItem)) { - return currentItem; - } - } - }; - helpers$1.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) { - // Default to end of the array - if (helpers$1.isNullOrUndef(startIndex)) { - startIndex = arrayToSearch.length; - } - for (var i = startIndex - 1; i >= 0; i--) { - var currentItem = arrayToSearch[i]; - if (filterCallback(currentItem)) { - return currentItem; - } - } - }; - - // -- Math methods - helpers$1.isNumber = function(n) { - return !isNaN(parseFloat(n)) && isFinite(n); - }; - helpers$1.almostEquals = function(x, y, epsilon) { - return Math.abs(x - y) < epsilon; - }; - helpers$1.almostWhole = function(x, epsilon) { - var rounded = Math.round(x); - return ((rounded - epsilon) <= x) && ((rounded + epsilon) >= x); - }; - helpers$1.max = function(array) { - return array.reduce(function(max, value) { - if (!isNaN(value)) { - return Math.max(max, value); - } - return max; - }, Number.NEGATIVE_INFINITY); - }; - helpers$1.min = function(array) { - return array.reduce(function(min, value) { - if (!isNaN(value)) { - return Math.min(min, value); - } - return min; - }, Number.POSITIVE_INFINITY); - }; - helpers$1.sign = Math.sign ? - function(x) { - return Math.sign(x); - } : - function(x) { - x = +x; // convert to a number - if (x === 0 || isNaN(x)) { - return x; - } - return x > 0 ? 1 : -1; - }; - helpers$1.toRadians = function(degrees) { - return degrees * (Math.PI / 180); - }; - helpers$1.toDegrees = function(radians) { - return radians * (180 / Math.PI); - }; - - /** - * Returns the number of decimal places - * i.e. the number of digits after the decimal point, of the value of this Number. - * @param {number} x - A number. - * @returns {number} The number of decimal places. - * @private - */ - helpers$1._decimalPlaces = function(x) { - if (!helpers$1.isFinite(x)) { - return; - } - var e = 1; - var p = 0; - while (Math.round(x * e) / e !== x) { - e *= 10; - p++; - } - return p; - }; - - // Gets the angle from vertical upright to the point about a centre. - helpers$1.getAngleFromPoint = function(centrePoint, anglePoint) { - var distanceFromXCenter = anglePoint.x - centrePoint.x; - var distanceFromYCenter = anglePoint.y - centrePoint.y; - var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter); - - var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter); - - if (angle < (-0.5 * Math.PI)) { - angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2] - } - - return { - angle: angle, - distance: radialDistanceFromCenter - }; - }; - helpers$1.distanceBetweenPoints = function(pt1, pt2) { - return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2)); - }; - - /** - * Provided for backward compatibility, not available anymore - * @function Chart.helpers.aliasPixel - * @deprecated since version 2.8.0 - * @todo remove at version 3 - */ - helpers$1.aliasPixel = function(pixelWidth) { - return (pixelWidth % 2 === 0) ? 0 : 0.5; - }; - - /** - * Returns the aligned pixel value to avoid anti-aliasing blur - * @param {Chart} chart - The chart instance. - * @param {number} pixel - A pixel value. - * @param {number} width - The width of the element. - * @returns {number} The aligned pixel value. - * @private - */ - helpers$1._alignPixel = function(chart, pixel, width) { - var devicePixelRatio = chart.currentDevicePixelRatio; - var halfWidth = width / 2; - return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth; - }; - - helpers$1.splineCurve = function(firstPoint, middlePoint, afterPoint, t) { - // Props to Rob Spencer at scaled innovation for his post on splining between points - // http://scaledinnovation.com/analytics/splines/aboutSplines.html - - // This function must also respect "skipped" points - - var previous = firstPoint.skip ? middlePoint : firstPoint; - var current = middlePoint; - var next = afterPoint.skip ? middlePoint : afterPoint; - - var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2)); - var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2)); - - var s01 = d01 / (d01 + d12); - var s12 = d12 / (d01 + d12); - - // If all points are the same, s01 & s02 will be inf - s01 = isNaN(s01) ? 0 : s01; - s12 = isNaN(s12) ? 0 : s12; - - var fa = t * s01; // scaling factor for triangle Ta - var fb = t * s12; - - return { - previous: { - x: current.x - fa * (next.x - previous.x), - y: current.y - fa * (next.y - previous.y) - }, - next: { - x: current.x + fb * (next.x - previous.x), - y: current.y + fb * (next.y - previous.y) - } - }; - }; - helpers$1.EPSILON = Number.EPSILON || 1e-14; - helpers$1.splineCurveMonotone = function(points) { - // This function calculates Bézier control points in a similar way than |splineCurve|, - // but preserves monotonicity of the provided data and ensures no local extremums are added - // between the dataset discrete points due to the interpolation. - // See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation - - var pointsWithTangents = (points || []).map(function(point) { - return { - model: point._model, - deltaK: 0, - mK: 0 - }; - }); - - // Calculate slopes (deltaK) and initialize tangents (mK) - var pointsLen = pointsWithTangents.length; - var i, pointBefore, pointCurrent, pointAfter; - for (i = 0; i < pointsLen; ++i) { - pointCurrent = pointsWithTangents[i]; - if (pointCurrent.model.skip) { - continue; - } - - pointBefore = i > 0 ? pointsWithTangents[i - 1] : null; - pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null; - if (pointAfter && !pointAfter.model.skip) { - var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x); - - // In the case of two points that appear at the same x pixel, slopeDeltaX is 0 - pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0; - } - - if (!pointBefore || pointBefore.model.skip) { - pointCurrent.mK = pointCurrent.deltaK; - } else if (!pointAfter || pointAfter.model.skip) { - pointCurrent.mK = pointBefore.deltaK; - } else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) { - pointCurrent.mK = 0; - } else { - pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2; - } - } - - // Adjust tangents to ensure monotonic properties - var alphaK, betaK, tauK, squaredMagnitude; - for (i = 0; i < pointsLen - 1; ++i) { - pointCurrent = pointsWithTangents[i]; - pointAfter = pointsWithTangents[i + 1]; - if (pointCurrent.model.skip || pointAfter.model.skip) { - continue; - } - - if (helpers$1.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) { - pointCurrent.mK = pointAfter.mK = 0; - continue; - } - - alphaK = pointCurrent.mK / pointCurrent.deltaK; - betaK = pointAfter.mK / pointCurrent.deltaK; - squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2); - if (squaredMagnitude <= 9) { - continue; - } - - tauK = 3 / Math.sqrt(squaredMagnitude); - pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK; - pointAfter.mK = betaK * tauK * pointCurrent.deltaK; - } - - // Compute control points - var deltaX; - for (i = 0; i < pointsLen; ++i) { - pointCurrent = pointsWithTangents[i]; - if (pointCurrent.model.skip) { - continue; - } - - pointBefore = i > 0 ? pointsWithTangents[i - 1] : null; - pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null; - if (pointBefore && !pointBefore.model.skip) { - deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3; - pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX; - pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK; - } - if (pointAfter && !pointAfter.model.skip) { - deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3; - pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX; - pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK; - } - } - }; - helpers$1.nextItem = function(collection, index, loop) { - if (loop) { - return index >= collection.length - 1 ? collection[0] : collection[index + 1]; - } - return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1]; - }; - helpers$1.previousItem = function(collection, index, loop) { - if (loop) { - return index <= 0 ? collection[collection.length - 1] : collection[index - 1]; - } - return index <= 0 ? collection[0] : collection[index - 1]; - }; - // Implementation of the nice number algorithm used in determining where axis labels will go - helpers$1.niceNum = function(range, round) { - var exponent = Math.floor(helpers$1.log10(range)); - var fraction = range / Math.pow(10, exponent); - var niceFraction; - - if (round) { - if (fraction < 1.5) { - niceFraction = 1; - } else if (fraction < 3) { - niceFraction = 2; - } else if (fraction < 7) { - niceFraction = 5; - } else { - niceFraction = 10; - } - } else if (fraction <= 1.0) { - niceFraction = 1; - } else if (fraction <= 2) { - niceFraction = 2; - } else if (fraction <= 5) { - niceFraction = 5; - } else { - niceFraction = 10; - } - - return niceFraction * Math.pow(10, exponent); - }; - // Request animation polyfill - https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/ - helpers$1.requestAnimFrame = (function() { - if (typeof window === 'undefined') { - return function(callback) { - callback(); - }; - } - return window.requestAnimationFrame || - window.webkitRequestAnimationFrame || - window.mozRequestAnimationFrame || - window.oRequestAnimationFrame || - window.msRequestAnimationFrame || - function(callback) { - return window.setTimeout(callback, 1000 / 60); - }; - }()); - // -- DOM methods - helpers$1.getRelativePosition = function(evt, chart) { - var mouseX, mouseY; - var e = evt.originalEvent || evt; - var canvas = evt.target || evt.srcElement; - var boundingRect = canvas.getBoundingClientRect(); - - var touches = e.touches; - if (touches && touches.length > 0) { - mouseX = touches[0].clientX; - mouseY = touches[0].clientY; - - } else { - mouseX = e.clientX; - mouseY = e.clientY; - } - - // Scale mouse coordinates into canvas coordinates - // by following the pattern laid out by 'jerryj' in the comments of - // https://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/ - var paddingLeft = parseFloat(helpers$1.getStyle(canvas, 'padding-left')); - var paddingTop = parseFloat(helpers$1.getStyle(canvas, 'padding-top')); - var paddingRight = parseFloat(helpers$1.getStyle(canvas, 'padding-right')); - var paddingBottom = parseFloat(helpers$1.getStyle(canvas, 'padding-bottom')); - var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight; - var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom; - - // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However - // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here - mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio); - mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio); - - return { - x: mouseX, - y: mouseY - }; - - }; - - // Private helper function to convert max-width/max-height values that may be percentages into a number - function parseMaxStyle(styleValue, node, parentProperty) { - var valueInPixels; - if (typeof styleValue === 'string') { - valueInPixels = parseInt(styleValue, 10); - - if (styleValue.indexOf('%') !== -1) { - // percentage * size in dimension - valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty]; - } - } else { - valueInPixels = styleValue; - } - - return valueInPixels; - } - - /** - * Returns if the given value contains an effective constraint. - * @private - */ - function isConstrainedValue(value) { - return value !== undefined && value !== null && value !== 'none'; - } - - /** - * Returns the max width or height of the given DOM node in a cross-browser compatible fashion - * @param {HTMLElement} domNode - the node to check the constraint on - * @param {string} maxStyle - the style that defines the maximum for the direction we are using ('max-width' / 'max-height') - * @param {string} percentageProperty - property of parent to use when calculating width as a percentage - * @see {@link https://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser} - */ - function getConstraintDimension(domNode, maxStyle, percentageProperty) { - var view = document.defaultView; - var parentNode = helpers$1._getParentNode(domNode); - var constrainedNode = view.getComputedStyle(domNode)[maxStyle]; - var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle]; - var hasCNode = isConstrainedValue(constrainedNode); - var hasCContainer = isConstrainedValue(constrainedContainer); - var infinity = Number.POSITIVE_INFINITY; - - if (hasCNode || hasCContainer) { - return Math.min( - hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity, - hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity); - } - - return 'none'; - } - // returns Number or undefined if no constraint - helpers$1.getConstraintWidth = function(domNode) { - return getConstraintDimension(domNode, 'max-width', 'clientWidth'); - }; - // returns Number or undefined if no constraint - helpers$1.getConstraintHeight = function(domNode) { - return getConstraintDimension(domNode, 'max-height', 'clientHeight'); - }; - /** - * @private - */ - helpers$1._calculatePadding = function(container, padding, parentDimension) { - padding = helpers$1.getStyle(container, padding); - - return padding.indexOf('%') > -1 ? parentDimension * parseInt(padding, 10) / 100 : parseInt(padding, 10); - }; - /** - * @private - */ - helpers$1._getParentNode = function(domNode) { - var parent = domNode.parentNode; - if (parent && parent.toString() === '[object ShadowRoot]') { - parent = parent.host; - } - return parent; - }; - helpers$1.getMaximumWidth = function(domNode) { - var container = helpers$1._getParentNode(domNode); - if (!container) { - return domNode.clientWidth; - } - - var clientWidth = container.clientWidth; - var paddingLeft = helpers$1._calculatePadding(container, 'padding-left', clientWidth); - var paddingRight = helpers$1._calculatePadding(container, 'padding-right', clientWidth); - - var w = clientWidth - paddingLeft - paddingRight; - var cw = helpers$1.getConstraintWidth(domNode); - return isNaN(cw) ? w : Math.min(w, cw); - }; - helpers$1.getMaximumHeight = function(domNode) { - var container = helpers$1._getParentNode(domNode); - if (!container) { - return domNode.clientHeight; - } - - var clientHeight = container.clientHeight; - var paddingTop = helpers$1._calculatePadding(container, 'padding-top', clientHeight); - var paddingBottom = helpers$1._calculatePadding(container, 'padding-bottom', clientHeight); - - var h = clientHeight - paddingTop - paddingBottom; - var ch = helpers$1.getConstraintHeight(domNode); - return isNaN(ch) ? h : Math.min(h, ch); - }; - helpers$1.getStyle = function(el, property) { - return el.currentStyle ? - el.currentStyle[property] : - document.defaultView.getComputedStyle(el, null).getPropertyValue(property); - }; - helpers$1.retinaScale = function(chart, forceRatio) { - var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1; - if (pixelRatio === 1) { - return; - } - - var canvas = chart.canvas; - var height = chart.height; - var width = chart.width; - - canvas.height = height * pixelRatio; - canvas.width = width * pixelRatio; - chart.ctx.scale(pixelRatio, pixelRatio); - - // If no style has been set on the canvas, the render size is used as display size, - // making the chart visually bigger, so let's enforce it to the "correct" values. - // See https://github.com/chartjs/Chart.js/issues/3575 - if (!canvas.style.height && !canvas.style.width) { - canvas.style.height = height + 'px'; - canvas.style.width = width + 'px'; - } - }; - // -- Canvas methods - helpers$1.fontString = function(pixelSize, fontStyle, fontFamily) { - return fontStyle + ' ' + pixelSize + 'px ' + fontFamily; - }; - helpers$1.longestText = function(ctx, font, arrayOfThings, cache) { - cache = cache || {}; - var data = cache.data = cache.data || {}; - var gc = cache.garbageCollect = cache.garbageCollect || []; - - if (cache.font !== font) { - data = cache.data = {}; - gc = cache.garbageCollect = []; - cache.font = font; - } - - ctx.font = font; - var longest = 0; - var ilen = arrayOfThings.length; - var i, j, jlen, thing, nestedThing; - for (i = 0; i < ilen; i++) { - thing = arrayOfThings[i]; - - // Undefined strings and arrays should not be measured - if (thing !== undefined && thing !== null && helpers$1.isArray(thing) !== true) { - longest = helpers$1.measureText(ctx, data, gc, longest, thing); - } else if (helpers$1.isArray(thing)) { - // if it is an array lets measure each element - // to do maybe simplify this function a bit so we can do this more recursively? - for (j = 0, jlen = thing.length; j < jlen; j++) { - nestedThing = thing[j]; - // Undefined strings and arrays should not be measured - if (nestedThing !== undefined && nestedThing !== null && !helpers$1.isArray(nestedThing)) { - longest = helpers$1.measureText(ctx, data, gc, longest, nestedThing); - } - } - } - } - - var gcLen = gc.length / 2; - if (gcLen > arrayOfThings.length) { - for (i = 0; i < gcLen; i++) { - delete data[gc[i]]; - } - gc.splice(0, gcLen); - } - return longest; - }; - helpers$1.measureText = function(ctx, data, gc, longest, string) { - var textWidth = data[string]; - if (!textWidth) { - textWidth = data[string] = ctx.measureText(string).width; - gc.push(string); - } - if (textWidth > longest) { - longest = textWidth; - } - return longest; - }; - - /** - * @deprecated - */ - helpers$1.numberOfLabelLines = function(arrayOfThings) { - var numberOfLines = 1; - helpers$1.each(arrayOfThings, function(thing) { - if (helpers$1.isArray(thing)) { - if (thing.length > numberOfLines) { - numberOfLines = thing.length; - } - } - }); - return numberOfLines; - }; - - helpers$1.color = !chartjsColor ? - function(value) { - console.error('Color.js not found!'); - return value; - } : - function(value) { - /* global CanvasGradient */ - if (value instanceof CanvasGradient) { - value = core_defaults.global.defaultColor; - } - - return chartjsColor(value); - }; - - helpers$1.getHoverColor = function(colorValue) { - /* global CanvasPattern */ - return (colorValue instanceof CanvasPattern || colorValue instanceof CanvasGradient) ? - colorValue : - helpers$1.color(colorValue).saturate(0.5).darken(0.1).rgbString(); - }; -}; - -function abstract() { - throw new Error( - 'This method is not implemented: either no adapter can ' + - 'be found or an incomplete integration was provided.' - ); -} - -/** - * Date adapter (current used by the time scale) - * @namespace Chart._adapters._date - * @memberof Chart._adapters - * @private - */ - -/** - * Currently supported unit string values. - * @typedef {('millisecond'|'second'|'minute'|'hour'|'day'|'week'|'month'|'quarter'|'year')} - * @memberof Chart._adapters._date - * @name Unit - */ - -/** - * @class - */ -function DateAdapter(options) { - this.options = options || {}; -} - -helpers$1.extend(DateAdapter.prototype, /** @lends DateAdapter */ { - /** - * Returns a map of time formats for the supported formatting units defined - * in Unit as well as 'datetime' representing a detailed date/time string. - * @returns {{string: string}} - */ - formats: abstract, - - /** - * Parses the given `value` and return the associated timestamp. - * @param {any} value - the value to parse (usually comes from the data) - * @param {string} [format] - the expected data format - * @returns {(number|null)} - * @function - */ - parse: abstract, - - /** - * Returns the formatted date in the specified `format` for a given `timestamp`. - * @param {number} timestamp - the timestamp to format - * @param {string} format - the date/time token - * @return {string} - * @function - */ - format: abstract, - - /** - * Adds the specified `amount` of `unit` to the given `timestamp`. - * @param {number} timestamp - the input timestamp - * @param {number} amount - the amount to add - * @param {Unit} unit - the unit as string - * @return {number} - * @function - */ - add: abstract, - - /** - * Returns the number of `unit` between the given timestamps. - * @param {number} max - the input timestamp (reference) - * @param {number} min - the timestamp to substract - * @param {Unit} unit - the unit as string - * @return {number} - * @function - */ - diff: abstract, - - /** - * Returns start of `unit` for the given `timestamp`. - * @param {number} timestamp - the input timestamp - * @param {Unit} unit - the unit as string - * @param {number} [weekday] - the ISO day of the week with 1 being Monday - * and 7 being Sunday (only needed if param *unit* is `isoWeek`). - * @function - */ - startOf: abstract, - - /** - * Returns end of `unit` for the given `timestamp`. - * @param {number} timestamp - the input timestamp - * @param {Unit} unit - the unit as string - * @function - */ - endOf: abstract, - - // DEPRECATIONS - - /** - * Provided for backward compatibility for scale.getValueForPixel(), - * this method should be overridden only by the moment adapter. - * @deprecated since version 2.8.0 - * @todo remove at version 3 - * @private - */ - _create: function(value) { - return value; - } -}); - -DateAdapter.override = function(members) { - helpers$1.extend(DateAdapter.prototype, members); -}; - -var _date = DateAdapter; - -var core_adapters = { - _date: _date -}; - -/** - * Namespace to hold static tick generation functions - * @namespace Chart.Ticks - */ -var core_ticks = { - /** - * Namespace to hold formatters for different types of ticks - * @namespace Chart.Ticks.formatters - */ - formatters: { - /** - * Formatter for value labels - * @method Chart.Ticks.formatters.values - * @param value the value to display - * @return {string|string[]} the label to display - */ - values: function(value) { - return helpers$1.isArray(value) ? value : '' + value; - }, - - /** - * Formatter for linear numeric ticks - * @method Chart.Ticks.formatters.linear - * @param tickValue {number} the value to be formatted - * @param index {number} the position of the tickValue parameter in the ticks array - * @param ticks {number[]} the list of ticks being converted - * @return {string} string representation of the tickValue parameter - */ - linear: function(tickValue, index, ticks) { - // If we have lots of ticks, don't use the ones - var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0]; - - // If we have a number like 2.5 as the delta, figure out how many decimal places we need - if (Math.abs(delta) > 1) { - if (tickValue !== Math.floor(tickValue)) { - // not an integer - delta = tickValue - Math.floor(tickValue); - } - } - - var logDelta = helpers$1.log10(Math.abs(delta)); - var tickString = ''; - - if (tickValue !== 0) { - var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1])); - if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation - var logTick = helpers$1.log10(Math.abs(tickValue)); - var numExponential = Math.floor(logTick) - Math.floor(logDelta); - numExponential = Math.max(Math.min(numExponential, 20), 0); - tickString = tickValue.toExponential(numExponential); - } else { - var numDecimal = -1 * Math.floor(logDelta); - numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places - tickString = tickValue.toFixed(numDecimal); - } - } else { - tickString = '0'; // never show decimal places for 0 - } - - return tickString; - }, - - logarithmic: function(tickValue, index, ticks) { - var remain = tickValue / (Math.pow(10, Math.floor(helpers$1.log10(tickValue)))); - - if (tickValue === 0) { - return '0'; - } else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) { - return tickValue.toExponential(); - } - return ''; - } - } -}; - -var isArray = helpers$1.isArray; -var isNullOrUndef = helpers$1.isNullOrUndef; -var valueOrDefault$a = helpers$1.valueOrDefault; -var valueAtIndexOrDefault = helpers$1.valueAtIndexOrDefault; - -core_defaults._set('scale', { - display: true, - position: 'left', - offset: false, - - // grid line settings - gridLines: { - display: true, - color: 'rgba(0,0,0,0.1)', - lineWidth: 1, - drawBorder: true, - drawOnChartArea: true, - drawTicks: true, - tickMarkLength: 10, - zeroLineWidth: 1, - zeroLineColor: 'rgba(0,0,0,0.25)', - zeroLineBorderDash: [], - zeroLineBorderDashOffset: 0.0, - offsetGridLines: false, - borderDash: [], - borderDashOffset: 0.0 - }, - - // scale label - scaleLabel: { - // display property - display: false, - - // actual label - labelString: '', - - // top/bottom padding - padding: { - top: 4, - bottom: 4 - } - }, - - // label settings - ticks: { - beginAtZero: false, - minRotation: 0, - maxRotation: 50, - mirror: false, - padding: 0, - reverse: false, - display: true, - autoSkip: true, - autoSkipPadding: 0, - labelOffset: 0, - // We pass through arrays to be rendered as multiline labels, we convert Others to strings here. - callback: core_ticks.formatters.values, - minor: {}, - major: {} - } -}); - -/** Returns a new array containing numItems from arr */ -function sample(arr, numItems) { - var result = []; - var increment = arr.length / numItems; - var i = 0; - var len = arr.length; - - for (; i < len; i += increment) { - result.push(arr[Math.floor(i)]); - } - return result; -} - -function getPixelForGridLine(scale, index, offsetGridLines) { - var length = scale.getTicks().length; - var validIndex = Math.min(index, length - 1); - var lineValue = scale.getPixelForTick(validIndex); - var start = scale._startPixel; - var end = scale._endPixel; - var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error. - var offset; - - if (offsetGridLines) { - if (length === 1) { - offset = Math.max(lineValue - start, end - lineValue); - } else if (index === 0) { - offset = (scale.getPixelForTick(1) - lineValue) / 2; - } else { - offset = (lineValue - scale.getPixelForTick(validIndex - 1)) / 2; - } - lineValue += validIndex < index ? offset : -offset; - - // Return undefined if the pixel is out of the range - if (lineValue < start - epsilon || lineValue > end + epsilon) { - return; - } - } - return lineValue; -} - -function garbageCollect(caches, length) { - helpers$1.each(caches, function(cache) { - var gc = cache.gc; - var gcLen = gc.length / 2; - var i; - if (gcLen > length) { - for (i = 0; i < gcLen; ++i) { - delete cache.data[gc[i]]; - } - gc.splice(0, gcLen); - } - }); -} - -/** - * Returns {width, height, offset} objects for the first, last, widest, highest tick - * labels where offset indicates the anchor point offset from the top in pixels. - */ -function computeLabelSizes(ctx, tickFonts, ticks, caches) { - var length = ticks.length; - var widths = []; - var heights = []; - var offsets = []; - var i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel, widest, highest; - - for (i = 0; i < length; ++i) { - label = ticks[i].label; - tickFont = ticks[i].major ? tickFonts.major : tickFonts.minor; - ctx.font = fontString = tickFont.string; - cache = caches[fontString] = caches[fontString] || {data: {}, gc: []}; - lineHeight = tickFont.lineHeight; - width = height = 0; - // Undefined labels and arrays should not be measured - if (!isNullOrUndef(label) && !isArray(label)) { - width = helpers$1.measureText(ctx, cache.data, cache.gc, width, label); - height = lineHeight; - } else if (isArray(label)) { - // if it is an array let's measure each element - for (j = 0, jlen = label.length; j < jlen; ++j) { - nestedLabel = label[j]; - // Undefined labels and arrays should not be measured - if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) { - width = helpers$1.measureText(ctx, cache.data, cache.gc, width, nestedLabel); - height += lineHeight; - } - } - } - widths.push(width); - heights.push(height); - offsets.push(lineHeight / 2); - } - garbageCollect(caches, length); - - widest = widths.indexOf(Math.max.apply(null, widths)); - highest = heights.indexOf(Math.max.apply(null, heights)); - - function valueAt(idx) { - return { - width: widths[idx] || 0, - height: heights[idx] || 0, - offset: offsets[idx] || 0 - }; - } - - return { - first: valueAt(0), - last: valueAt(length - 1), - widest: valueAt(widest), - highest: valueAt(highest) - }; -} - -function getTickMarkLength(options) { - return options.drawTicks ? options.tickMarkLength : 0; -} - -function getScaleLabelHeight(options) { - var font, padding; - - if (!options.display) { - return 0; - } - - font = helpers$1.options._parseFont(options); - padding = helpers$1.options.toPadding(options.padding); - - return font.lineHeight + padding.height; -} - -function parseFontOptions(options, nestedOpts) { - return helpers$1.extend(helpers$1.options._parseFont({ - fontFamily: valueOrDefault$a(nestedOpts.fontFamily, options.fontFamily), - fontSize: valueOrDefault$a(nestedOpts.fontSize, options.fontSize), - fontStyle: valueOrDefault$a(nestedOpts.fontStyle, options.fontStyle), - lineHeight: valueOrDefault$a(nestedOpts.lineHeight, options.lineHeight) - }), { - color: helpers$1.options.resolve([nestedOpts.fontColor, options.fontColor, core_defaults.global.defaultFontColor]) - }); -} - -function parseTickFontOptions(options) { - var minor = parseFontOptions(options, options.minor); - var major = options.major.enabled ? parseFontOptions(options, options.major) : minor; - - return {minor: minor, major: major}; -} - -function nonSkipped(ticksToFilter) { - var filtered = []; - var item, index, len; - for (index = 0, len = ticksToFilter.length; index < len; ++index) { - item = ticksToFilter[index]; - if (typeof item._index !== 'undefined') { - filtered.push(item); - } - } - return filtered; -} - -function getEvenSpacing(arr) { - var len = arr.length; - var i, diff; - - if (len < 2) { - return false; - } - - for (diff = arr[0], i = 1; i < len; ++i) { - if (arr[i] - arr[i - 1] !== diff) { - return false; - } - } - return diff; -} - -function calculateSpacing(majorIndices, ticks, axisLength, ticksLimit) { - var evenMajorSpacing = getEvenSpacing(majorIndices); - var spacing = (ticks.length - 1) / ticksLimit; - var factors, factor, i, ilen; - - // If the major ticks are evenly spaced apart, place the minor ticks - // so that they divide the major ticks into even chunks - if (!evenMajorSpacing) { - return Math.max(spacing, 1); - } - - factors = helpers$1.math._factorize(evenMajorSpacing); - for (i = 0, ilen = factors.length - 1; i < ilen; i++) { - factor = factors[i]; - if (factor > spacing) { - return factor; - } - } - return Math.max(spacing, 1); -} - -function getMajorIndices(ticks) { - var result = []; - var i, ilen; - for (i = 0, ilen = ticks.length; i < ilen; i++) { - if (ticks[i].major) { - result.push(i); - } - } - return result; -} - -function skipMajors(ticks, majorIndices, spacing) { - var count = 0; - var next = majorIndices[0]; - var i, tick; - - spacing = Math.ceil(spacing); - for (i = 0; i < ticks.length; i++) { - tick = ticks[i]; - if (i === next) { - tick._index = i; - count++; - next = majorIndices[count * spacing]; - } else { - delete tick.label; - } - } -} - -function skip(ticks, spacing, majorStart, majorEnd) { - var start = valueOrDefault$a(majorStart, 0); - var end = Math.min(valueOrDefault$a(majorEnd, ticks.length), ticks.length); - var count = 0; - var length, i, tick, next; - - spacing = Math.ceil(spacing); - if (majorEnd) { - length = majorEnd - majorStart; - spacing = length / Math.floor(length / spacing); - } - - next = start; - - while (next < 0) { - count++; - next = Math.round(start + count * spacing); - } - - for (i = Math.max(start, 0); i < end; i++) { - tick = ticks[i]; - if (i === next) { - tick._index = i; - count++; - next = Math.round(start + count * spacing); - } else { - delete tick.label; - } - } -} - -var Scale = core_element.extend({ - - zeroLineIndex: 0, - - /** - * Get the padding needed for the scale - * @method getPadding - * @private - * @returns {Padding} the necessary padding - */ - getPadding: function() { - var me = this; - return { - left: me.paddingLeft || 0, - top: me.paddingTop || 0, - right: me.paddingRight || 0, - bottom: me.paddingBottom || 0 - }; - }, - - /** - * Returns the scale tick objects ({label, major}) - * @since 2.7 - */ - getTicks: function() { - return this._ticks; - }, - - /** - * @private - */ - _getLabels: function() { - var data = this.chart.data; - return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || []; - }, - - // These methods are ordered by lifecyle. Utilities then follow. - // Any function defined here is inherited by all scale types. - // Any function can be extended by the scale type - - /** - * Provided for backward compatibility, not available anymore - * @function Chart.Scale.mergeTicksOptions - * @deprecated since version 2.8.0 - * @todo remove at version 3 - */ - mergeTicksOptions: function() { - // noop - }, - - beforeUpdate: function() { - helpers$1.callback(this.options.beforeUpdate, [this]); - }, - - /** - * @param {number} maxWidth - the max width in pixels - * @param {number} maxHeight - the max height in pixels - * @param {object} margins - the space between the edge of the other scales and edge of the chart - * This space comes from two sources: - * - padding - space that's required to show the labels at the edges of the scale - * - thickness of scales or legends in another orientation - */ - update: function(maxWidth, maxHeight, margins) { - var me = this; - var tickOpts = me.options.ticks; - var sampleSize = tickOpts.sampleSize; - var i, ilen, labels, ticks, samplingEnabled; - - // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;) - me.beforeUpdate(); - - // Absorb the master measurements - me.maxWidth = maxWidth; - me.maxHeight = maxHeight; - me.margins = helpers$1.extend({ - left: 0, - right: 0, - top: 0, - bottom: 0 - }, margins); - - me._ticks = null; - me.ticks = null; - me._labelSizes = null; - me._maxLabelLines = 0; - me.longestLabelWidth = 0; - me.longestTextCache = me.longestTextCache || {}; - me._gridLineItems = null; - me._labelItems = null; - - // Dimensions - me.beforeSetDimensions(); - me.setDimensions(); - me.afterSetDimensions(); - - // Data min/max - me.beforeDataLimits(); - me.determineDataLimits(); - me.afterDataLimits(); - - // Ticks - `this.ticks` is now DEPRECATED! - // Internal ticks are now stored as objects in the PRIVATE `this._ticks` member - // and must not be accessed directly from outside this class. `this.ticks` being - // around for long time and not marked as private, we can't change its structure - // without unexpected breaking changes. If you need to access the scale ticks, - // use scale.getTicks() instead. - - me.beforeBuildTicks(); - - // New implementations should return an array of objects but for BACKWARD COMPAT, - // we still support no return (`this.ticks` internally set by calling this method). - ticks = me.buildTicks() || []; - - // Allow modification of ticks in callback. - ticks = me.afterBuildTicks(ticks) || ticks; - - // Ensure ticks contains ticks in new tick format - if ((!ticks || !ticks.length) && me.ticks) { - ticks = []; - for (i = 0, ilen = me.ticks.length; i < ilen; ++i) { - ticks.push({ - value: me.ticks[i], - major: false - }); - } - } - - me._ticks = ticks; - - // Compute tick rotation and fit using a sampled subset of labels - // We generally don't need to compute the size of every single label for determining scale size - samplingEnabled = sampleSize < ticks.length; - labels = me._convertTicksToLabels(samplingEnabled ? sample(ticks, sampleSize) : ticks); - - // _configure is called twice, once here, once from core.controller.updateLayout. - // Here we haven't been positioned yet, but dimensions are correct. - // Variables set in _configure are needed for calculateTickRotation, and - // it's ok that coordinates are not correct there, only dimensions matter. - me._configure(); - - // Tick Rotation - me.beforeCalculateTickRotation(); - me.calculateTickRotation(); - me.afterCalculateTickRotation(); - - me.beforeFit(); - me.fit(); - me.afterFit(); - - // Auto-skip - me._ticksToDraw = tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto') ? me._autoSkip(ticks) : ticks; - - if (samplingEnabled) { - // Generate labels using all non-skipped ticks - labels = me._convertTicksToLabels(me._ticksToDraw); - } - - me.ticks = labels; // BACKWARD COMPATIBILITY - - // IMPORTANT: after this point, we consider that `this.ticks` will NEVER change! - - me.afterUpdate(); - - // TODO(v3): remove minSize as a public property and return value from all layout boxes. It is unused - // make maxWidth and maxHeight private - return me.minSize; - }, - - /** - * @private - */ - _configure: function() { - var me = this; - var reversePixels = me.options.ticks.reverse; - var startPixel, endPixel; - - if (me.isHorizontal()) { - startPixel = me.left; - endPixel = me.right; - } else { - startPixel = me.top; - endPixel = me.bottom; - // by default vertical scales are from bottom to top, so pixels are reversed - reversePixels = !reversePixels; - } - me._startPixel = startPixel; - me._endPixel = endPixel; - me._reversePixels = reversePixels; - me._length = endPixel - startPixel; - }, - - afterUpdate: function() { - helpers$1.callback(this.options.afterUpdate, [this]); - }, - - // - - beforeSetDimensions: function() { - helpers$1.callback(this.options.beforeSetDimensions, [this]); - }, - setDimensions: function() { - var me = this; - // Set the unconstrained dimension before label rotation - if (me.isHorizontal()) { - // Reset position before calculating rotation - me.width = me.maxWidth; - me.left = 0; - me.right = me.width; - } else { - me.height = me.maxHeight; - - // Reset position before calculating rotation - me.top = 0; - me.bottom = me.height; - } - - // Reset padding - me.paddingLeft = 0; - me.paddingTop = 0; - me.paddingRight = 0; - me.paddingBottom = 0; - }, - afterSetDimensions: function() { - helpers$1.callback(this.options.afterSetDimensions, [this]); - }, - - // Data limits - beforeDataLimits: function() { - helpers$1.callback(this.options.beforeDataLimits, [this]); - }, - determineDataLimits: helpers$1.noop, - afterDataLimits: function() { - helpers$1.callback(this.options.afterDataLimits, [this]); - }, - - // - beforeBuildTicks: function() { - helpers$1.callback(this.options.beforeBuildTicks, [this]); - }, - buildTicks: helpers$1.noop, - afterBuildTicks: function(ticks) { - var me = this; - // ticks is empty for old axis implementations here - if (isArray(ticks) && ticks.length) { - return helpers$1.callback(me.options.afterBuildTicks, [me, ticks]); - } - // Support old implementations (that modified `this.ticks` directly in buildTicks) - me.ticks = helpers$1.callback(me.options.afterBuildTicks, [me, me.ticks]) || me.ticks; - return ticks; - }, - - beforeTickToLabelConversion: function() { - helpers$1.callback(this.options.beforeTickToLabelConversion, [this]); - }, - convertTicksToLabels: function() { - var me = this; - // Convert ticks to strings - var tickOpts = me.options.ticks; - me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this); - }, - afterTickToLabelConversion: function() { - helpers$1.callback(this.options.afterTickToLabelConversion, [this]); - }, - - // - - beforeCalculateTickRotation: function() { - helpers$1.callback(this.options.beforeCalculateTickRotation, [this]); - }, - calculateTickRotation: function() { - var me = this; - var options = me.options; - var tickOpts = options.ticks; - var numTicks = me.getTicks().length; - var minRotation = tickOpts.minRotation || 0; - var maxRotation = tickOpts.maxRotation; - var labelRotation = minRotation; - var labelSizes, maxLabelWidth, maxLabelHeight, maxWidth, tickWidth, maxHeight, maxLabelDiagonal; - - if (!me._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !me.isHorizontal()) { - me.labelRotation = minRotation; - return; - } - - labelSizes = me._getLabelSizes(); - maxLabelWidth = labelSizes.widest.width; - maxLabelHeight = labelSizes.highest.height - labelSizes.highest.offset; - - // Estimate the width of each grid based on the canvas width, the maximum - // label width and the number of tick intervals - maxWidth = Math.min(me.maxWidth, me.chart.width - maxLabelWidth); - tickWidth = options.offset ? me.maxWidth / numTicks : maxWidth / (numTicks - 1); - - // Allow 3 pixels x2 padding either side for label readability - if (maxLabelWidth + 6 > tickWidth) { - tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1)); - maxHeight = me.maxHeight - getTickMarkLength(options.gridLines) - - tickOpts.padding - getScaleLabelHeight(options.scaleLabel); - maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight); - labelRotation = helpers$1.toDegrees(Math.min( - Math.asin(Math.min((labelSizes.highest.height + 6) / tickWidth, 1)), - Math.asin(Math.min(maxHeight / maxLabelDiagonal, 1)) - Math.asin(maxLabelHeight / maxLabelDiagonal) - )); - labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation)); - } - - me.labelRotation = labelRotation; - }, - afterCalculateTickRotation: function() { - helpers$1.callback(this.options.afterCalculateTickRotation, [this]); - }, - - // - - beforeFit: function() { - helpers$1.callback(this.options.beforeFit, [this]); - }, - fit: function() { - var me = this; - // Reset - var minSize = me.minSize = { - width: 0, - height: 0 - }; - - var chart = me.chart; - var opts = me.options; - var tickOpts = opts.ticks; - var scaleLabelOpts = opts.scaleLabel; - var gridLineOpts = opts.gridLines; - var display = me._isVisible(); - var isBottom = opts.position === 'bottom'; - var isHorizontal = me.isHorizontal(); - - // Width - if (isHorizontal) { - minSize.width = me.maxWidth; - } else if (display) { - minSize.width = getTickMarkLength(gridLineOpts) + getScaleLabelHeight(scaleLabelOpts); - } - - // height - if (!isHorizontal) { - minSize.height = me.maxHeight; // fill all the height - } else if (display) { - minSize.height = getTickMarkLength(gridLineOpts) + getScaleLabelHeight(scaleLabelOpts); - } - - // Don't bother fitting the ticks if we are not showing the labels - if (tickOpts.display && display) { - var tickFonts = parseTickFontOptions(tickOpts); - var labelSizes = me._getLabelSizes(); - var firstLabelSize = labelSizes.first; - var lastLabelSize = labelSizes.last; - var widestLabelSize = labelSizes.widest; - var highestLabelSize = labelSizes.highest; - var lineSpace = tickFonts.minor.lineHeight * 0.4; - var tickPadding = tickOpts.padding; - - if (isHorizontal) { - // A horizontal axis is more constrained by the height. - var isRotated = me.labelRotation !== 0; - var angleRadians = helpers$1.toRadians(me.labelRotation); - var cosRotation = Math.cos(angleRadians); - var sinRotation = Math.sin(angleRadians); - - var labelHeight = sinRotation * widestLabelSize.width - + cosRotation * (highestLabelSize.height - (isRotated ? highestLabelSize.offset : 0)) - + (isRotated ? 0 : lineSpace); // padding - - minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding); - - var offsetLeft = me.getPixelForTick(0) - me.left; - var offsetRight = me.right - me.getPixelForTick(me.getTicks().length - 1); - var paddingLeft, paddingRight; - - // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned - // which means that the right padding is dominated by the font height - if (isRotated) { - paddingLeft = isBottom ? - cosRotation * firstLabelSize.width + sinRotation * firstLabelSize.offset : - sinRotation * (firstLabelSize.height - firstLabelSize.offset); - paddingRight = isBottom ? - sinRotation * (lastLabelSize.height - lastLabelSize.offset) : - cosRotation * lastLabelSize.width + sinRotation * lastLabelSize.offset; - } else { - paddingLeft = firstLabelSize.width / 2; - paddingRight = lastLabelSize.width / 2; - } - - // Adjust padding taking into account changes in offsets - // and add 3 px to move away from canvas edges - me.paddingLeft = Math.max((paddingLeft - offsetLeft) * me.width / (me.width - offsetLeft), 0) + 3; - me.paddingRight = Math.max((paddingRight - offsetRight) * me.width / (me.width - offsetRight), 0) + 3; - } else { - // A vertical axis is more constrained by the width. Labels are the - // dominant factor here, so get that length first and account for padding - var labelWidth = tickOpts.mirror ? 0 : - // use lineSpace for consistency with horizontal axis - // tickPadding is not implemented for horizontal - widestLabelSize.width + tickPadding + lineSpace; - - minSize.width = Math.min(me.maxWidth, minSize.width + labelWidth); - - me.paddingTop = firstLabelSize.height / 2; - me.paddingBottom = lastLabelSize.height / 2; - } - } - - me.handleMargins(); - - if (isHorizontal) { - me.width = me._length = chart.width - me.margins.left - me.margins.right; - me.height = minSize.height; - } else { - me.width = minSize.width; - me.height = me._length = chart.height - me.margins.top - me.margins.bottom; - } - }, - - /** - * Handle margins and padding interactions - * @private - */ - handleMargins: function() { - var me = this; - if (me.margins) { - me.margins.left = Math.max(me.paddingLeft, me.margins.left); - me.margins.top = Math.max(me.paddingTop, me.margins.top); - me.margins.right = Math.max(me.paddingRight, me.margins.right); - me.margins.bottom = Math.max(me.paddingBottom, me.margins.bottom); - } - }, - - afterFit: function() { - helpers$1.callback(this.options.afterFit, [this]); - }, - - // Shared Methods - isHorizontal: function() { - var pos = this.options.position; - return pos === 'top' || pos === 'bottom'; - }, - isFullWidth: function() { - return this.options.fullWidth; - }, - - // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not - getRightValue: function(rawValue) { - // Null and undefined values first - if (isNullOrUndef(rawValue)) { - return NaN; - } - // isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values - if ((typeof rawValue === 'number' || rawValue instanceof Number) && !isFinite(rawValue)) { - return NaN; - } - - // If it is in fact an object, dive in one more level - if (rawValue) { - if (this.isHorizontal()) { - if (rawValue.x !== undefined) { - return this.getRightValue(rawValue.x); - } - } else if (rawValue.y !== undefined) { - return this.getRightValue(rawValue.y); - } - } - - // Value is good, return it - return rawValue; - }, - - _convertTicksToLabels: function(ticks) { - var me = this; - var labels, i, ilen; - - me.ticks = ticks.map(function(tick) { - return tick.value; - }); - - me.beforeTickToLabelConversion(); - - // New implementations should return the formatted tick labels but for BACKWARD - // COMPAT, we still support no return (`this.ticks` internally changed by calling - // this method and supposed to contain only string values). - labels = me.convertTicksToLabels(ticks) || me.ticks; - - me.afterTickToLabelConversion(); - - // BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`) - for (i = 0, ilen = ticks.length; i < ilen; ++i) { - ticks[i].label = labels[i]; - } - - return labels; - }, - - /** - * @private - */ - _getLabelSizes: function() { - var me = this; - var labelSizes = me._labelSizes; - - if (!labelSizes) { - me._labelSizes = labelSizes = computeLabelSizes(me.ctx, parseTickFontOptions(me.options.ticks), me.getTicks(), me.longestTextCache); - me.longestLabelWidth = labelSizes.widest.width; - } - - return labelSizes; - }, - - /** - * @private - */ - _parseValue: function(value) { - var start, end, min, max; - - if (isArray(value)) { - start = +this.getRightValue(value[0]); - end = +this.getRightValue(value[1]); - min = Math.min(start, end); - max = Math.max(start, end); - } else { - value = +this.getRightValue(value); - start = undefined; - end = value; - min = value; - max = value; - } - - return { - min: min, - max: max, - start: start, - end: end - }; - }, - - /** - * @private - */ - _getScaleLabel: function(rawValue) { - var v = this._parseValue(rawValue); - if (v.start !== undefined) { - return '[' + v.start + ', ' + v.end + ']'; - } - - return +this.getRightValue(rawValue); - }, - - /** - * Used to get the value to display in the tooltip for the data at the given index - * @param index - * @param datasetIndex - */ - getLabelForIndex: helpers$1.noop, - - /** - * Returns the location of the given data point. Value can either be an index or a numerical value - * The coordinate (0, 0) is at the upper-left corner of the canvas - * @param value - * @param index - * @param datasetIndex - */ - getPixelForValue: helpers$1.noop, - - /** - * Used to get the data value from a given pixel. This is the inverse of getPixelForValue - * The coordinate (0, 0) is at the upper-left corner of the canvas - * @param pixel - */ - getValueForPixel: helpers$1.noop, - - /** - * Returns the location of the tick at the given index - * The coordinate (0, 0) is at the upper-left corner of the canvas - */ - getPixelForTick: function(index) { - var me = this; - var offset = me.options.offset; - var numTicks = me._ticks.length; - var tickWidth = 1 / Math.max(numTicks - (offset ? 0 : 1), 1); - - return index < 0 || index > numTicks - 1 - ? null - : me.getPixelForDecimal(index * tickWidth + (offset ? tickWidth / 2 : 0)); - }, - - /** - * Utility for getting the pixel location of a percentage of scale - * The coordinate (0, 0) is at the upper-left corner of the canvas - */ - getPixelForDecimal: function(decimal) { - var me = this; - - if (me._reversePixels) { - decimal = 1 - decimal; - } - - return me._startPixel + decimal * me._length; - }, - - getDecimalForPixel: function(pixel) { - var decimal = (pixel - this._startPixel) / this._length; - return this._reversePixels ? 1 - decimal : decimal; - }, - - /** - * Returns the pixel for the minimum chart value - * The coordinate (0, 0) is at the upper-left corner of the canvas - */ - getBasePixel: function() { - return this.getPixelForValue(this.getBaseValue()); - }, - - getBaseValue: function() { - var me = this; - var min = me.min; - var max = me.max; - - return me.beginAtZero ? 0 : - min < 0 && max < 0 ? max : - min > 0 && max > 0 ? min : - 0; - }, - - /** - * Returns a subset of ticks to be plotted to avoid overlapping labels. - * @private - */ - _autoSkip: function(ticks) { - var me = this; - var tickOpts = me.options.ticks; - var axisLength = me._length; - var ticksLimit = tickOpts.maxTicksLimit || axisLength / me._tickSize() + 1; - var majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : []; - var numMajorIndices = majorIndices.length; - var first = majorIndices[0]; - var last = majorIndices[numMajorIndices - 1]; - var i, ilen, spacing, avgMajorSpacing; - - // If there are too many major ticks to display them all - if (numMajorIndices > ticksLimit) { - skipMajors(ticks, majorIndices, numMajorIndices / ticksLimit); - return nonSkipped(ticks); - } - - spacing = calculateSpacing(majorIndices, ticks, axisLength, ticksLimit); - - if (numMajorIndices > 0) { - for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) { - skip(ticks, spacing, majorIndices[i], majorIndices[i + 1]); - } - avgMajorSpacing = numMajorIndices > 1 ? (last - first) / (numMajorIndices - 1) : null; - skip(ticks, spacing, helpers$1.isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first); - skip(ticks, spacing, last, helpers$1.isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing); - return nonSkipped(ticks); - } - skip(ticks, spacing); - return nonSkipped(ticks); - }, - - /** - * @private - */ - _tickSize: function() { - var me = this; - var optionTicks = me.options.ticks; - - // Calculate space needed by label in axis direction. - var rot = helpers$1.toRadians(me.labelRotation); - var cos = Math.abs(Math.cos(rot)); - var sin = Math.abs(Math.sin(rot)); - - var labelSizes = me._getLabelSizes(); - var padding = optionTicks.autoSkipPadding || 0; - var w = labelSizes ? labelSizes.widest.width + padding : 0; - var h = labelSizes ? labelSizes.highest.height + padding : 0; - - // Calculate space needed for 1 tick in axis direction. - return me.isHorizontal() - ? h * cos > w * sin ? w / cos : h / sin - : h * sin < w * cos ? h / cos : w / sin; - }, - - /** - * @private - */ - _isVisible: function() { - var me = this; - var chart = me.chart; - var display = me.options.display; - var i, ilen, meta; - - if (display !== 'auto') { - return !!display; - } - - // When 'auto', the scale is visible if at least one associated dataset is visible. - for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) { - if (chart.isDatasetVisible(i)) { - meta = chart.getDatasetMeta(i); - if (meta.xAxisID === me.id || meta.yAxisID === me.id) { - return true; - } - } - } - - return false; - }, - - /** - * @private - */ - _computeGridLineItems: function(chartArea) { - var me = this; - var chart = me.chart; - var options = me.options; - var gridLines = options.gridLines; - var position = options.position; - var offsetGridLines = gridLines.offsetGridLines; - var isHorizontal = me.isHorizontal(); - var ticks = me._ticksToDraw; - var ticksLength = ticks.length + (offsetGridLines ? 1 : 0); - - var tl = getTickMarkLength(gridLines); - var items = []; - var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0; - var axisHalfWidth = axisWidth / 2; - var alignPixel = helpers$1._alignPixel; - var alignBorderValue = function(pixel) { - return alignPixel(chart, pixel, axisWidth); - }; - var borderValue, i, tick, lineValue, alignedLineValue; - var tx1, ty1, tx2, ty2, x1, y1, x2, y2, lineWidth, lineColor, borderDash, borderDashOffset; - - if (position === 'top') { - borderValue = alignBorderValue(me.bottom); - ty1 = me.bottom - tl; - ty2 = borderValue - axisHalfWidth; - y1 = alignBorderValue(chartArea.top) + axisHalfWidth; - y2 = chartArea.bottom; - } else if (position === 'bottom') { - borderValue = alignBorderValue(me.top); - y1 = chartArea.top; - y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth; - ty1 = borderValue + axisHalfWidth; - ty2 = me.top + tl; - } else if (position === 'left') { - borderValue = alignBorderValue(me.right); - tx1 = me.right - tl; - tx2 = borderValue - axisHalfWidth; - x1 = alignBorderValue(chartArea.left) + axisHalfWidth; - x2 = chartArea.right; - } else { - borderValue = alignBorderValue(me.left); - x1 = chartArea.left; - x2 = alignBorderValue(chartArea.right) - axisHalfWidth; - tx1 = borderValue + axisHalfWidth; - tx2 = me.left + tl; - } - - for (i = 0; i < ticksLength; ++i) { - tick = ticks[i] || {}; - - // autoskipper skipped this tick (#4635) - if (isNullOrUndef(tick.label) && i < ticks.length) { - continue; - } - - if (i === me.zeroLineIndex && options.offset === offsetGridLines) { - // Draw the first index specially - lineWidth = gridLines.zeroLineWidth; - lineColor = gridLines.zeroLineColor; - borderDash = gridLines.zeroLineBorderDash || []; - borderDashOffset = gridLines.zeroLineBorderDashOffset || 0.0; - } else { - lineWidth = valueAtIndexOrDefault(gridLines.lineWidth, i, 1); - lineColor = valueAtIndexOrDefault(gridLines.color, i, 'rgba(0,0,0,0.1)'); - borderDash = gridLines.borderDash || []; - borderDashOffset = gridLines.borderDashOffset || 0.0; - } - - lineValue = getPixelForGridLine(me, tick._index || i, offsetGridLines); - - // Skip if the pixel is out of the range - if (lineValue === undefined) { - continue; - } - - alignedLineValue = alignPixel(chart, lineValue, lineWidth); - - if (isHorizontal) { - tx1 = tx2 = x1 = x2 = alignedLineValue; - } else { - ty1 = ty2 = y1 = y2 = alignedLineValue; - } - - items.push({ - tx1: tx1, - ty1: ty1, - tx2: tx2, - ty2: ty2, - x1: x1, - y1: y1, - x2: x2, - y2: y2, - width: lineWidth, - color: lineColor, - borderDash: borderDash, - borderDashOffset: borderDashOffset, - }); - } - - items.ticksLength = ticksLength; - items.borderValue = borderValue; - - return items; - }, - - /** - * @private - */ - _computeLabelItems: function() { - var me = this; - var options = me.options; - var optionTicks = options.ticks; - var position = options.position; - var isMirrored = optionTicks.mirror; - var isHorizontal = me.isHorizontal(); - var ticks = me._ticksToDraw; - var fonts = parseTickFontOptions(optionTicks); - var tickPadding = optionTicks.padding; - var tl = getTickMarkLength(options.gridLines); - var rotation = -helpers$1.toRadians(me.labelRotation); - var items = []; - var i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset; - - if (position === 'top') { - y = me.bottom - tl - tickPadding; - textAlign = !rotation ? 'center' : 'left'; - } else if (position === 'bottom') { - y = me.top + tl + tickPadding; - textAlign = !rotation ? 'center' : 'right'; - } else if (position === 'left') { - x = me.right - (isMirrored ? 0 : tl) - tickPadding; - textAlign = isMirrored ? 'left' : 'right'; - } else { - x = me.left + (isMirrored ? 0 : tl) + tickPadding; - textAlign = isMirrored ? 'right' : 'left'; - } - - for (i = 0, ilen = ticks.length; i < ilen; ++i) { - tick = ticks[i]; - label = tick.label; - - // autoskipper skipped this tick (#4635) - if (isNullOrUndef(label)) { - continue; - } - - pixel = me.getPixelForTick(tick._index || i) + optionTicks.labelOffset; - font = tick.major ? fonts.major : fonts.minor; - lineHeight = font.lineHeight; - lineCount = isArray(label) ? label.length : 1; - - if (isHorizontal) { - x = pixel; - textOffset = position === 'top' - ? ((!rotation ? 0.5 : 1) - lineCount) * lineHeight - : (!rotation ? 0.5 : 0) * lineHeight; - } else { - y = pixel; - textOffset = (1 - lineCount) * lineHeight / 2; - } - - items.push({ - x: x, - y: y, - rotation: rotation, - label: label, - font: font, - textOffset: textOffset, - textAlign: textAlign - }); - } - - return items; - }, - - /** - * @private - */ - _drawGrid: function(chartArea) { - var me = this; - var gridLines = me.options.gridLines; - - if (!gridLines.display) { - return; - } - - var ctx = me.ctx; - var chart = me.chart; - var alignPixel = helpers$1._alignPixel; - var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0; - var items = me._gridLineItems || (me._gridLineItems = me._computeGridLineItems(chartArea)); - var width, color, i, ilen, item; - - for (i = 0, ilen = items.length; i < ilen; ++i) { - item = items[i]; - width = item.width; - color = item.color; - - if (width && color) { - ctx.save(); - ctx.lineWidth = width; - ctx.strokeStyle = color; - if (ctx.setLineDash) { - ctx.setLineDash(item.borderDash); - ctx.lineDashOffset = item.borderDashOffset; - } - - ctx.beginPath(); - - if (gridLines.drawTicks) { - ctx.moveTo(item.tx1, item.ty1); - ctx.lineTo(item.tx2, item.ty2); - } - - if (gridLines.drawOnChartArea) { - ctx.moveTo(item.x1, item.y1); - ctx.lineTo(item.x2, item.y2); - } - - ctx.stroke(); - ctx.restore(); - } - } - - if (axisWidth) { - // Draw the line at the edge of the axis - var firstLineWidth = axisWidth; - var lastLineWidth = valueAtIndexOrDefault(gridLines.lineWidth, items.ticksLength - 1, 1); - var borderValue = items.borderValue; - var x1, x2, y1, y2; - - if (me.isHorizontal()) { - x1 = alignPixel(chart, me.left, firstLineWidth) - firstLineWidth / 2; - x2 = alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2; - y1 = y2 = borderValue; - } else { - y1 = alignPixel(chart, me.top, firstLineWidth) - firstLineWidth / 2; - y2 = alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2; - x1 = x2 = borderValue; - } - - ctx.lineWidth = axisWidth; - ctx.strokeStyle = valueAtIndexOrDefault(gridLines.color, 0); - ctx.beginPath(); - ctx.moveTo(x1, y1); - ctx.lineTo(x2, y2); - ctx.stroke(); - } - }, - - /** - * @private - */ - _drawLabels: function() { - var me = this; - var optionTicks = me.options.ticks; - - if (!optionTicks.display) { - return; - } - - var ctx = me.ctx; - var items = me._labelItems || (me._labelItems = me._computeLabelItems()); - var i, j, ilen, jlen, item, tickFont, label, y; - - for (i = 0, ilen = items.length; i < ilen; ++i) { - item = items[i]; - tickFont = item.font; - - // Make sure we draw text in the correct color and font - ctx.save(); - ctx.translate(item.x, item.y); - ctx.rotate(item.rotation); - ctx.font = tickFont.string; - ctx.fillStyle = tickFont.color; - ctx.textBaseline = 'middle'; - ctx.textAlign = item.textAlign; - - label = item.label; - y = item.textOffset; - if (isArray(label)) { - for (j = 0, jlen = label.length; j < jlen; ++j) { - // We just make sure the multiline element is a string here.. - ctx.fillText('' + label[j], 0, y); - y += tickFont.lineHeight; - } - } else { - ctx.fillText(label, 0, y); - } - ctx.restore(); - } - }, - - /** - * @private - */ - _drawTitle: function() { - var me = this; - var ctx = me.ctx; - var options = me.options; - var scaleLabel = options.scaleLabel; - - if (!scaleLabel.display) { - return; - } - - var scaleLabelFontColor = valueOrDefault$a(scaleLabel.fontColor, core_defaults.global.defaultFontColor); - var scaleLabelFont = helpers$1.options._parseFont(scaleLabel); - var scaleLabelPadding = helpers$1.options.toPadding(scaleLabel.padding); - var halfLineHeight = scaleLabelFont.lineHeight / 2; - var position = options.position; - var rotation = 0; - var scaleLabelX, scaleLabelY; - - if (me.isHorizontal()) { - scaleLabelX = me.left + me.width / 2; // midpoint of the width - scaleLabelY = position === 'bottom' - ? me.bottom - halfLineHeight - scaleLabelPadding.bottom - : me.top + halfLineHeight + scaleLabelPadding.top; - } else { - var isLeft = position === 'left'; - scaleLabelX = isLeft - ? me.left + halfLineHeight + scaleLabelPadding.top - : me.right - halfLineHeight - scaleLabelPadding.top; - scaleLabelY = me.top + me.height / 2; - rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI; - } - - ctx.save(); - ctx.translate(scaleLabelX, scaleLabelY); - ctx.rotate(rotation); - ctx.textAlign = 'center'; - ctx.textBaseline = 'middle'; - ctx.fillStyle = scaleLabelFontColor; // render in correct colour - ctx.font = scaleLabelFont.string; - ctx.fillText(scaleLabel.labelString, 0, 0); - ctx.restore(); - }, - - draw: function(chartArea) { - var me = this; - - if (!me._isVisible()) { - return; - } - - me._drawGrid(chartArea); - me._drawTitle(); - me._drawLabels(); - }, - - /** - * @private - */ - _layers: function() { - var me = this; - var opts = me.options; - var tz = opts.ticks && opts.ticks.z || 0; - var gz = opts.gridLines && opts.gridLines.z || 0; - - if (!me._isVisible() || tz === gz || me.draw !== me._draw) { - // backward compatibility: draw has been overridden by custom scale - return [{ - z: tz, - draw: function() { - me.draw.apply(me, arguments); - } - }]; - } - - return [{ - z: gz, - draw: function() { - me._drawGrid.apply(me, arguments); - me._drawTitle.apply(me, arguments); - } - }, { - z: tz, - draw: function() { - me._drawLabels.apply(me, arguments); - } - }]; - }, - - /** - * @private - */ - _getMatchingVisibleMetas: function(type) { - var me = this; - var isHorizontal = me.isHorizontal(); - return me.chart._getSortedVisibleDatasetMetas() - .filter(function(meta) { - return (!type || meta.type === type) - && (isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id); - }); - } -}); - -Scale.prototype._draw = Scale.prototype.draw; - -var core_scale = Scale; - -var isNullOrUndef$1 = helpers$1.isNullOrUndef; - -var defaultConfig = { - position: 'bottom' -}; - -var scale_category = core_scale.extend({ - determineDataLimits: function() { - var me = this; - var labels = me._getLabels(); - var ticksOpts = me.options.ticks; - var min = ticksOpts.min; - var max = ticksOpts.max; - var minIndex = 0; - var maxIndex = labels.length - 1; - var findIndex; - - if (min !== undefined) { - // user specified min value - findIndex = labels.indexOf(min); - if (findIndex >= 0) { - minIndex = findIndex; - } - } - - if (max !== undefined) { - // user specified max value - findIndex = labels.indexOf(max); - if (findIndex >= 0) { - maxIndex = findIndex; - } - } - - me.minIndex = minIndex; - me.maxIndex = maxIndex; - me.min = labels[minIndex]; - me.max = labels[maxIndex]; - }, - - buildTicks: function() { - var me = this; - var labels = me._getLabels(); - var minIndex = me.minIndex; - var maxIndex = me.maxIndex; - - // If we are viewing some subset of labels, slice the original array - me.ticks = (minIndex === 0 && maxIndex === labels.length - 1) ? labels : labels.slice(minIndex, maxIndex + 1); - }, - - getLabelForIndex: function(index, datasetIndex) { - var me = this; - var chart = me.chart; - - if (chart.getDatasetMeta(datasetIndex).controller._getValueScaleId() === me.id) { - return me.getRightValue(chart.data.datasets[datasetIndex].data[index]); - } - - return me._getLabels()[index]; - }, - - _configure: function() { - var me = this; - var offset = me.options.offset; - var ticks = me.ticks; - - core_scale.prototype._configure.call(me); - - if (!me.isHorizontal()) { - // For backward compatibility, vertical category scale reverse is inverted. - me._reversePixels = !me._reversePixels; - } - - if (!ticks) { - return; - } - - me._startValue = me.minIndex - (offset ? 0.5 : 0); - me._valueRange = Math.max(ticks.length - (offset ? 0 : 1), 1); - }, - - // Used to get data value locations. Value can either be an index or a numerical value - getPixelForValue: function(value, index, datasetIndex) { - var me = this; - var valueCategory, labels, idx; - - if (!isNullOrUndef$1(index) && !isNullOrUndef$1(datasetIndex)) { - value = me.chart.data.datasets[datasetIndex].data[index]; - } - - // If value is a data object, then index is the index in the data array, - // not the index of the scale. We need to change that. - if (!isNullOrUndef$1(value)) { - valueCategory = me.isHorizontal() ? value.x : value.y; - } - if (valueCategory !== undefined || (value !== undefined && isNaN(index))) { - labels = me._getLabels(); - value = helpers$1.valueOrDefault(valueCategory, value); - idx = labels.indexOf(value); - index = idx !== -1 ? idx : index; - if (isNaN(index)) { - index = value; - } - } - return me.getPixelForDecimal((index - me._startValue) / me._valueRange); - }, - - getPixelForTick: function(index) { - var ticks = this.ticks; - return index < 0 || index > ticks.length - 1 - ? null - : this.getPixelForValue(ticks[index], index + this.minIndex); - }, - - getValueForPixel: function(pixel) { - var me = this; - var value = Math.round(me._startValue + me.getDecimalForPixel(pixel) * me._valueRange); - return Math.min(Math.max(value, 0), me.ticks.length - 1); - }, - - getBasePixel: function() { - return this.bottom; - } -}); - -// INTERNAL: static default options, registered in src/index.js -var _defaults = defaultConfig; -scale_category._defaults = _defaults; - -var noop = helpers$1.noop; -var isNullOrUndef$2 = helpers$1.isNullOrUndef; - -/** - * Generate a set of linear ticks - * @param generationOptions the options used to generate the ticks - * @param dataRange the range of the data - * @returns {number[]} array of tick values - */ -function generateTicks(generationOptions, dataRange) { - var ticks = []; - // To get a "nice" value for the tick spacing, we will use the appropriately named - // "nice number" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks - // for details. - - var MIN_SPACING = 1e-14; - var stepSize = generationOptions.stepSize; - var unit = stepSize || 1; - var maxNumSpaces = generationOptions.maxTicks - 1; - var min = generationOptions.min; - var max = generationOptions.max; - var precision = generationOptions.precision; - var rmin = dataRange.min; - var rmax = dataRange.max; - var spacing = helpers$1.niceNum((rmax - rmin) / maxNumSpaces / unit) * unit; - var factor, niceMin, niceMax, numSpaces; - - // Beyond MIN_SPACING floating point numbers being to lose precision - // such that we can't do the math necessary to generate ticks - if (spacing < MIN_SPACING && isNullOrUndef$2(min) && isNullOrUndef$2(max)) { - return [rmin, rmax]; - } - - numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing); - if (numSpaces > maxNumSpaces) { - // If the calculated num of spaces exceeds maxNumSpaces, recalculate it - spacing = helpers$1.niceNum(numSpaces * spacing / maxNumSpaces / unit) * unit; - } - - if (stepSize || isNullOrUndef$2(precision)) { - // If a precision is not specified, calculate factor based on spacing - factor = Math.pow(10, helpers$1._decimalPlaces(spacing)); - } else { - // If the user specified a precision, round to that number of decimal places - factor = Math.pow(10, precision); - spacing = Math.ceil(spacing * factor) / factor; - } - - niceMin = Math.floor(rmin / spacing) * spacing; - niceMax = Math.ceil(rmax / spacing) * spacing; - - // If min, max and stepSize is set and they make an evenly spaced scale use it. - if (stepSize) { - // If very close to our whole number, use it. - if (!isNullOrUndef$2(min) && helpers$1.almostWhole(min / spacing, spacing / 1000)) { - niceMin = min; - } - if (!isNullOrUndef$2(max) && helpers$1.almostWhole(max / spacing, spacing / 1000)) { - niceMax = max; - } - } - - numSpaces = (niceMax - niceMin) / spacing; - // If very close to our rounded value, use it. - if (helpers$1.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) { - numSpaces = Math.round(numSpaces); - } else { - numSpaces = Math.ceil(numSpaces); - } - - niceMin = Math.round(niceMin * factor) / factor; - niceMax = Math.round(niceMax * factor) / factor; - ticks.push(isNullOrUndef$2(min) ? niceMin : min); - for (var j = 1; j < numSpaces; ++j) { - ticks.push(Math.round((niceMin + j * spacing) * factor) / factor); - } - ticks.push(isNullOrUndef$2(max) ? niceMax : max); - - return ticks; -} - -var scale_linearbase = core_scale.extend({ - getRightValue: function(value) { - if (typeof value === 'string') { - return +value; - } - return core_scale.prototype.getRightValue.call(this, value); - }, - - handleTickRangeOptions: function() { - var me = this; - var opts = me.options; - var tickOpts = opts.ticks; - - // If we are forcing it to begin at 0, but 0 will already be rendered on the chart, - // do nothing since that would make the chart weird. If the user really wants a weird chart - // axis, they can manually override it - if (tickOpts.beginAtZero) { - var minSign = helpers$1.sign(me.min); - var maxSign = helpers$1.sign(me.max); - - if (minSign < 0 && maxSign < 0) { - // move the top up to 0 - me.max = 0; - } else if (minSign > 0 && maxSign > 0) { - // move the bottom down to 0 - me.min = 0; - } - } - - var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined; - var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined; - - if (tickOpts.min !== undefined) { - me.min = tickOpts.min; - } else if (tickOpts.suggestedMin !== undefined) { - if (me.min === null) { - me.min = tickOpts.suggestedMin; - } else { - me.min = Math.min(me.min, tickOpts.suggestedMin); - } - } - - if (tickOpts.max !== undefined) { - me.max = tickOpts.max; - } else if (tickOpts.suggestedMax !== undefined) { - if (me.max === null) { - me.max = tickOpts.suggestedMax; - } else { - me.max = Math.max(me.max, tickOpts.suggestedMax); - } - } - - if (setMin !== setMax) { - // We set the min or the max but not both. - // So ensure that our range is good - // Inverted or 0 length range can happen when - // ticks.min is set, and no datasets are visible - if (me.min >= me.max) { - if (setMin) { - me.max = me.min + 1; - } else { - me.min = me.max - 1; - } - } - } - - if (me.min === me.max) { - me.max++; - - if (!tickOpts.beginAtZero) { - me.min--; - } - } - }, - - getTickLimit: function() { - var me = this; - var tickOpts = me.options.ticks; - var stepSize = tickOpts.stepSize; - var maxTicksLimit = tickOpts.maxTicksLimit; - var maxTicks; - - if (stepSize) { - maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1; - } else { - maxTicks = me._computeTickLimit(); - maxTicksLimit = maxTicksLimit || 11; - } - - if (maxTicksLimit) { - maxTicks = Math.min(maxTicksLimit, maxTicks); - } - - return maxTicks; - }, - - _computeTickLimit: function() { - return Number.POSITIVE_INFINITY; - }, - - handleDirectionalChanges: noop, - - buildTicks: function() { - var me = this; - var opts = me.options; - var tickOpts = opts.ticks; - - // Figure out what the max number of ticks we can support it is based on the size of - // the axis area. For now, we say that the minimum tick spacing in pixels must be 40 - // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on - // the graph. Make sure we always have at least 2 ticks - var maxTicks = me.getTickLimit(); - maxTicks = Math.max(2, maxTicks); - - var numericGeneratorOptions = { - maxTicks: maxTicks, - min: tickOpts.min, - max: tickOpts.max, - precision: tickOpts.precision, - stepSize: helpers$1.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize) - }; - var ticks = me.ticks = generateTicks(numericGeneratorOptions, me); - - me.handleDirectionalChanges(); - - // At this point, we need to update our max and min given the tick values since we have expanded the - // range of the scale - me.max = helpers$1.max(ticks); - me.min = helpers$1.min(ticks); - - if (tickOpts.reverse) { - ticks.reverse(); - - me.start = me.max; - me.end = me.min; - } else { - me.start = me.min; - me.end = me.max; - } - }, - - convertTicksToLabels: function() { - var me = this; - me.ticksAsNumbers = me.ticks.slice(); - me.zeroLineIndex = me.ticks.indexOf(0); - - core_scale.prototype.convertTicksToLabels.call(me); - }, - - _configure: function() { - var me = this; - var ticks = me.getTicks(); - var start = me.min; - var end = me.max; - var offset; - - core_scale.prototype._configure.call(me); - - if (me.options.offset && ticks.length) { - offset = (end - start) / Math.max(ticks.length - 1, 1) / 2; - start -= offset; - end += offset; - } - me._startValue = start; - me._endValue = end; - me._valueRange = end - start; - } -}); - -var defaultConfig$1 = { - position: 'left', - ticks: { - callback: core_ticks.formatters.linear - } -}; - -var DEFAULT_MIN = 0; -var DEFAULT_MAX = 1; - -function getOrCreateStack(stacks, stacked, meta) { - var key = [ - meta.type, - // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined - stacked === undefined && meta.stack === undefined ? meta.index : '', - meta.stack - ].join('.'); - - if (stacks[key] === undefined) { - stacks[key] = { - pos: [], - neg: [] - }; - } - - return stacks[key]; -} - -function stackData(scale, stacks, meta, data) { - var opts = scale.options; - var stacked = opts.stacked; - var stack = getOrCreateStack(stacks, stacked, meta); - var pos = stack.pos; - var neg = stack.neg; - var ilen = data.length; - var i, value; - - for (i = 0; i < ilen; ++i) { - value = scale._parseValue(data[i]); - if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden) { - continue; - } - - pos[i] = pos[i] || 0; - neg[i] = neg[i] || 0; - - if (opts.relativePoints) { - pos[i] = 100; - } else if (value.min < 0 || value.max < 0) { - neg[i] += value.min; - } else { - pos[i] += value.max; - } - } -} - -function updateMinMax(scale, meta, data) { - var ilen = data.length; - var i, value; - - for (i = 0; i < ilen; ++i) { - value = scale._parseValue(data[i]); - if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden) { - continue; - } - - scale.min = Math.min(scale.min, value.min); - scale.max = Math.max(scale.max, value.max); - } -} - -var scale_linear = scale_linearbase.extend({ - determineDataLimits: function() { - var me = this; - var opts = me.options; - var chart = me.chart; - var datasets = chart.data.datasets; - var metasets = me._getMatchingVisibleMetas(); - var hasStacks = opts.stacked; - var stacks = {}; - var ilen = metasets.length; - var i, meta, data, values; - - me.min = Number.POSITIVE_INFINITY; - me.max = Number.NEGATIVE_INFINITY; - - if (hasStacks === undefined) { - for (i = 0; !hasStacks && i < ilen; ++i) { - meta = metasets[i]; - hasStacks = meta.stack !== undefined; - } - } - - for (i = 0; i < ilen; ++i) { - meta = metasets[i]; - data = datasets[meta.index].data; - if (hasStacks) { - stackData(me, stacks, meta, data); - } else { - updateMinMax(me, meta, data); - } - } - - helpers$1.each(stacks, function(stackValues) { - values = stackValues.pos.concat(stackValues.neg); - me.min = Math.min(me.min, helpers$1.min(values)); - me.max = Math.max(me.max, helpers$1.max(values)); - }); - - me.min = helpers$1.isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN; - me.max = helpers$1.isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX; - - // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero - me.handleTickRangeOptions(); - }, - - // Returns the maximum number of ticks based on the scale dimension - _computeTickLimit: function() { - var me = this; - var tickFont; - - if (me.isHorizontal()) { - return Math.ceil(me.width / 40); - } - tickFont = helpers$1.options._parseFont(me.options.ticks); - return Math.ceil(me.height / tickFont.lineHeight); - }, - - // Called after the ticks are built. We need - handleDirectionalChanges: function() { - if (!this.isHorizontal()) { - // We are in a vertical orientation. The top value is the highest. So reverse the array - this.ticks.reverse(); - } - }, - - getLabelForIndex: function(index, datasetIndex) { - return this._getScaleLabel(this.chart.data.datasets[datasetIndex].data[index]); - }, - - // Utils - getPixelForValue: function(value) { - var me = this; - return me.getPixelForDecimal((+me.getRightValue(value) - me._startValue) / me._valueRange); - }, - - getValueForPixel: function(pixel) { - return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange; - }, - - getPixelForTick: function(index) { - var ticks = this.ticksAsNumbers; - if (index < 0 || index > ticks.length - 1) { - return null; - } - return this.getPixelForValue(ticks[index]); - } -}); - -// INTERNAL: static default options, registered in src/index.js -var _defaults$1 = defaultConfig$1; -scale_linear._defaults = _defaults$1; - -var valueOrDefault$b = helpers$1.valueOrDefault; -var log10 = helpers$1.math.log10; - -/** - * Generate a set of logarithmic ticks - * @param generationOptions the options used to generate the ticks - * @param dataRange the range of the data - * @returns {number[]} array of tick values - */ -function generateTicks$1(generationOptions, dataRange) { - var ticks = []; - - var tickVal = valueOrDefault$b(generationOptions.min, Math.pow(10, Math.floor(log10(dataRange.min)))); - - var endExp = Math.floor(log10(dataRange.max)); - var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp)); - var exp, significand; - - if (tickVal === 0) { - exp = Math.floor(log10(dataRange.minNotZero)); - significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp)); - - ticks.push(tickVal); - tickVal = significand * Math.pow(10, exp); - } else { - exp = Math.floor(log10(tickVal)); - significand = Math.floor(tickVal / Math.pow(10, exp)); - } - var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1; - - do { - ticks.push(tickVal); - - ++significand; - if (significand === 10) { - significand = 1; - ++exp; - precision = exp >= 0 ? 1 : precision; - } - - tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision; - } while (exp < endExp || (exp === endExp && significand < endSignificand)); - - var lastTick = valueOrDefault$b(generationOptions.max, tickVal); - ticks.push(lastTick); - - return ticks; -} - -var defaultConfig$2 = { - position: 'left', - - // label settings - ticks: { - callback: core_ticks.formatters.logarithmic - } -}; - -// TODO(v3): change this to positiveOrDefault -function nonNegativeOrDefault(value, defaultValue) { - return helpers$1.isFinite(value) && value >= 0 ? value : defaultValue; -} - -var scale_logarithmic = core_scale.extend({ - determineDataLimits: function() { - var me = this; - var opts = me.options; - var chart = me.chart; - var datasets = chart.data.datasets; - var isHorizontal = me.isHorizontal(); - function IDMatches(meta) { - return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id; - } - var datasetIndex, meta, value, data, i, ilen; - - // Calculate Range - me.min = Number.POSITIVE_INFINITY; - me.max = Number.NEGATIVE_INFINITY; - me.minNotZero = Number.POSITIVE_INFINITY; - - var hasStacks = opts.stacked; - if (hasStacks === undefined) { - for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) { - meta = chart.getDatasetMeta(datasetIndex); - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) && - meta.stack !== undefined) { - hasStacks = true; - break; - } - } - } - - if (opts.stacked || hasStacks) { - var valuesPerStack = {}; - - for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) { - meta = chart.getDatasetMeta(datasetIndex); - var key = [ - meta.type, - // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined - ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''), - meta.stack - ].join('.'); - - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { - if (valuesPerStack[key] === undefined) { - valuesPerStack[key] = []; - } - - data = datasets[datasetIndex].data; - for (i = 0, ilen = data.length; i < ilen; i++) { - var values = valuesPerStack[key]; - value = me._parseValue(data[i]); - // invalid, hidden and negative values are ignored - if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden || value.min < 0 || value.max < 0) { - continue; - } - values[i] = values[i] || 0; - values[i] += value.max; - } - } - } - - helpers$1.each(valuesPerStack, function(valuesForType) { - if (valuesForType.length > 0) { - var minVal = helpers$1.min(valuesForType); - var maxVal = helpers$1.max(valuesForType); - me.min = Math.min(me.min, minVal); - me.max = Math.max(me.max, maxVal); - } - }); - - } else { - for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) { - meta = chart.getDatasetMeta(datasetIndex); - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { - data = datasets[datasetIndex].data; - for (i = 0, ilen = data.length; i < ilen; i++) { - value = me._parseValue(data[i]); - // invalid, hidden and negative values are ignored - if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden || value.min < 0 || value.max < 0) { - continue; - } - - me.min = Math.min(value.min, me.min); - me.max = Math.max(value.max, me.max); - - if (value.min !== 0) { - me.minNotZero = Math.min(value.min, me.minNotZero); - } - } - } - } - } - - me.min = helpers$1.isFinite(me.min) ? me.min : null; - me.max = helpers$1.isFinite(me.max) ? me.max : null; - me.minNotZero = helpers$1.isFinite(me.minNotZero) ? me.minNotZero : null; - - // Common base implementation to handle ticks.min, ticks.max - this.handleTickRangeOptions(); - }, - - handleTickRangeOptions: function() { - var me = this; - var tickOpts = me.options.ticks; - var DEFAULT_MIN = 1; - var DEFAULT_MAX = 10; - - me.min = nonNegativeOrDefault(tickOpts.min, me.min); - me.max = nonNegativeOrDefault(tickOpts.max, me.max); - - if (me.min === me.max) { - if (me.min !== 0 && me.min !== null) { - me.min = Math.pow(10, Math.floor(log10(me.min)) - 1); - me.max = Math.pow(10, Math.floor(log10(me.max)) + 1); - } else { - me.min = DEFAULT_MIN; - me.max = DEFAULT_MAX; - } - } - if (me.min === null) { - me.min = Math.pow(10, Math.floor(log10(me.max)) - 1); - } - if (me.max === null) { - me.max = me.min !== 0 - ? Math.pow(10, Math.floor(log10(me.min)) + 1) - : DEFAULT_MAX; - } - if (me.minNotZero === null) { - if (me.min > 0) { - me.minNotZero = me.min; - } else if (me.max < 1) { - me.minNotZero = Math.pow(10, Math.floor(log10(me.max))); - } else { - me.minNotZero = DEFAULT_MIN; - } - } - }, - - buildTicks: function() { - var me = this; - var tickOpts = me.options.ticks; - var reverse = !me.isHorizontal(); - - var generationOptions = { - min: nonNegativeOrDefault(tickOpts.min), - max: nonNegativeOrDefault(tickOpts.max) - }; - var ticks = me.ticks = generateTicks$1(generationOptions, me); - - // At this point, we need to update our max and min given the tick values since we have expanded the - // range of the scale - me.max = helpers$1.max(ticks); - me.min = helpers$1.min(ticks); - - if (tickOpts.reverse) { - reverse = !reverse; - me.start = me.max; - me.end = me.min; - } else { - me.start = me.min; - me.end = me.max; - } - if (reverse) { - ticks.reverse(); - } - }, - - convertTicksToLabels: function() { - this.tickValues = this.ticks.slice(); - - core_scale.prototype.convertTicksToLabels.call(this); - }, - - // Get the correct tooltip label - getLabelForIndex: function(index, datasetIndex) { - return this._getScaleLabel(this.chart.data.datasets[datasetIndex].data[index]); - }, - - getPixelForTick: function(index) { - var ticks = this.tickValues; - if (index < 0 || index > ticks.length - 1) { - return null; - } - return this.getPixelForValue(ticks[index]); - }, - - /** - * Returns the value of the first tick. - * @param {number} value - The minimum not zero value. - * @return {number} The first tick value. - * @private - */ - _getFirstTickValue: function(value) { - var exp = Math.floor(log10(value)); - var significand = Math.floor(value / Math.pow(10, exp)); - - return significand * Math.pow(10, exp); - }, - - _configure: function() { - var me = this; - var start = me.min; - var offset = 0; - - core_scale.prototype._configure.call(me); - - if (start === 0) { - start = me._getFirstTickValue(me.minNotZero); - offset = valueOrDefault$b(me.options.ticks.fontSize, core_defaults.global.defaultFontSize) / me._length; - } - - me._startValue = log10(start); - me._valueOffset = offset; - me._valueRange = (log10(me.max) - log10(start)) / (1 - offset); - }, - - getPixelForValue: function(value) { - var me = this; - var decimal = 0; - - value = +me.getRightValue(value); - - if (value > me.min && value > 0) { - decimal = (log10(value) - me._startValue) / me._valueRange + me._valueOffset; - } - return me.getPixelForDecimal(decimal); - }, - - getValueForPixel: function(pixel) { - var me = this; - var decimal = me.getDecimalForPixel(pixel); - return decimal === 0 && me.min === 0 - ? 0 - : Math.pow(10, me._startValue + (decimal - me._valueOffset) * me._valueRange); - } -}); - -// INTERNAL: static default options, registered in src/index.js -var _defaults$2 = defaultConfig$2; -scale_logarithmic._defaults = _defaults$2; - -var valueOrDefault$c = helpers$1.valueOrDefault; -var valueAtIndexOrDefault$1 = helpers$1.valueAtIndexOrDefault; -var resolve$4 = helpers$1.options.resolve; - -var defaultConfig$3 = { - display: true, - - // Boolean - Whether to animate scaling the chart from the centre - animate: true, - position: 'chartArea', - - angleLines: { - display: true, - color: 'rgba(0,0,0,0.1)', - lineWidth: 1, - borderDash: [], - borderDashOffset: 0.0 - }, - - gridLines: { - circular: false - }, - - // label settings - ticks: { - // Boolean - Show a backdrop to the scale label - showLabelBackdrop: true, - - // String - The colour of the label backdrop - backdropColor: 'rgba(255,255,255,0.75)', - - // Number - The backdrop padding above & below the label in pixels - backdropPaddingY: 2, - - // Number - The backdrop padding to the side of the label in pixels - backdropPaddingX: 2, - - callback: core_ticks.formatters.linear - }, - - pointLabels: { - // Boolean - if true, show point labels - display: true, - - // Number - Point label font size in pixels - fontSize: 10, - - // Function - Used to convert point labels - callback: function(label) { - return label; - } - } -}; - -function getTickBackdropHeight(opts) { - var tickOpts = opts.ticks; - - if (tickOpts.display && opts.display) { - return valueOrDefault$c(tickOpts.fontSize, core_defaults.global.defaultFontSize) + tickOpts.backdropPaddingY * 2; - } - return 0; -} - -function measureLabelSize(ctx, lineHeight, label) { - if (helpers$1.isArray(label)) { - return { - w: helpers$1.longestText(ctx, ctx.font, label), - h: label.length * lineHeight - }; - } - - return { - w: ctx.measureText(label).width, - h: lineHeight - }; -} - -function determineLimits(angle, pos, size, min, max) { - if (angle === min || angle === max) { - return { - start: pos - (size / 2), - end: pos + (size / 2) - }; - } else if (angle < min || angle > max) { - return { - start: pos - size, - end: pos - }; - } - - return { - start: pos, - end: pos + size - }; -} - -/** - * Helper function to fit a radial linear scale with point labels - */ -function fitWithPointLabels(scale) { - - // Right, this is really confusing and there is a lot of maths going on here - // The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9 - // - // Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif - // - // Solution: - // - // We assume the radius of the polygon is half the size of the canvas at first - // at each index we check if the text overlaps. - // - // Where it does, we store that angle and that index. - // - // After finding the largest index and angle we calculate how much we need to remove - // from the shape radius to move the point inwards by that x. - // - // We average the left and right distances to get the maximum shape radius that can fit in the box - // along with labels. - // - // Once we have that, we can find the centre point for the chart, by taking the x text protrusion - // on each side, removing that from the size, halving it and adding the left x protrusion width. - // - // This will mean we have a shape fitted to the canvas, as large as it can be with the labels - // and position it in the most space efficient manner - // - // https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif - - var plFont = helpers$1.options._parseFont(scale.options.pointLabels); - - // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width. - // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points - var furthestLimits = { - l: 0, - r: scale.width, - t: 0, - b: scale.height - scale.paddingTop - }; - var furthestAngles = {}; - var i, textSize, pointPosition; - - scale.ctx.font = plFont.string; - scale._pointLabelSizes = []; - - var valueCount = scale.chart.data.labels.length; - for (i = 0; i < valueCount; i++) { - pointPosition = scale.getPointPosition(i, scale.drawingArea + 5); - textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale.pointLabels[i]); - scale._pointLabelSizes[i] = textSize; - - // Add quarter circle to make degree 0 mean top of circle - var angleRadians = scale.getIndexAngle(i); - var angle = helpers$1.toDegrees(angleRadians) % 360; - var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180); - var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270); - - if (hLimits.start < furthestLimits.l) { - furthestLimits.l = hLimits.start; - furthestAngles.l = angleRadians; - } - - if (hLimits.end > furthestLimits.r) { - furthestLimits.r = hLimits.end; - furthestAngles.r = angleRadians; - } - - if (vLimits.start < furthestLimits.t) { - furthestLimits.t = vLimits.start; - furthestAngles.t = angleRadians; - } - - if (vLimits.end > furthestLimits.b) { - furthestLimits.b = vLimits.end; - furthestAngles.b = angleRadians; - } - } - - scale.setReductions(scale.drawingArea, furthestLimits, furthestAngles); -} - -function getTextAlignForAngle(angle) { - if (angle === 0 || angle === 180) { - return 'center'; - } else if (angle < 180) { - return 'left'; - } - - return 'right'; -} - -function fillText(ctx, text, position, lineHeight) { - var y = position.y + lineHeight / 2; - var i, ilen; - - if (helpers$1.isArray(text)) { - for (i = 0, ilen = text.length; i < ilen; ++i) { - ctx.fillText(text[i], position.x, y); - y += lineHeight; - } - } else { - ctx.fillText(text, position.x, y); - } -} - -function adjustPointPositionForLabelHeight(angle, textSize, position) { - if (angle === 90 || angle === 270) { - position.y -= (textSize.h / 2); - } else if (angle > 270 || angle < 90) { - position.y -= textSize.h; - } -} - -function drawPointLabels(scale) { - var ctx = scale.ctx; - var opts = scale.options; - var pointLabelOpts = opts.pointLabels; - var tickBackdropHeight = getTickBackdropHeight(opts); - var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max); - var plFont = helpers$1.options._parseFont(pointLabelOpts); - - ctx.save(); - - ctx.font = plFont.string; - ctx.textBaseline = 'middle'; - - for (var i = scale.chart.data.labels.length - 1; i >= 0; i--) { - // Extra pixels out for some label spacing - var extra = (i === 0 ? tickBackdropHeight / 2 : 0); - var pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + 5); - - // Keep this in loop since we may support array properties here - var pointLabelFontColor = valueAtIndexOrDefault$1(pointLabelOpts.fontColor, i, core_defaults.global.defaultFontColor); - ctx.fillStyle = pointLabelFontColor; - - var angleRadians = scale.getIndexAngle(i); - var angle = helpers$1.toDegrees(angleRadians); - ctx.textAlign = getTextAlignForAngle(angle); - adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition); - fillText(ctx, scale.pointLabels[i], pointLabelPosition, plFont.lineHeight); - } - ctx.restore(); -} - -function drawRadiusLine(scale, gridLineOpts, radius, index) { - var ctx = scale.ctx; - var circular = gridLineOpts.circular; - var valueCount = scale.chart.data.labels.length; - var lineColor = valueAtIndexOrDefault$1(gridLineOpts.color, index - 1); - var lineWidth = valueAtIndexOrDefault$1(gridLineOpts.lineWidth, index - 1); - var pointPosition; - - if ((!circular && !valueCount) || !lineColor || !lineWidth) { - return; - } - - ctx.save(); - ctx.strokeStyle = lineColor; - ctx.lineWidth = lineWidth; - if (ctx.setLineDash) { - ctx.setLineDash(gridLineOpts.borderDash || []); - ctx.lineDashOffset = gridLineOpts.borderDashOffset || 0.0; - } - - ctx.beginPath(); - if (circular) { - // Draw circular arcs between the points - ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2); - } else { - // Draw straight lines connecting each index - pointPosition = scale.getPointPosition(0, radius); - ctx.moveTo(pointPosition.x, pointPosition.y); - - for (var i = 1; i < valueCount; i++) { - pointPosition = scale.getPointPosition(i, radius); - ctx.lineTo(pointPosition.x, pointPosition.y); - } - } - ctx.closePath(); - ctx.stroke(); - ctx.restore(); -} - -function numberOrZero(param) { - return helpers$1.isNumber(param) ? param : 0; -} - -var scale_radialLinear = scale_linearbase.extend({ - setDimensions: function() { - var me = this; - - // Set the unconstrained dimension before label rotation - me.width = me.maxWidth; - me.height = me.maxHeight; - me.paddingTop = getTickBackdropHeight(me.options) / 2; - me.xCenter = Math.floor(me.width / 2); - me.yCenter = Math.floor((me.height - me.paddingTop) / 2); - me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2; - }, - - determineDataLimits: function() { - var me = this; - var chart = me.chart; - var min = Number.POSITIVE_INFINITY; - var max = Number.NEGATIVE_INFINITY; - - helpers$1.each(chart.data.datasets, function(dataset, datasetIndex) { - if (chart.isDatasetVisible(datasetIndex)) { - var meta = chart.getDatasetMeta(datasetIndex); - - helpers$1.each(dataset.data, function(rawValue, index) { - var value = +me.getRightValue(rawValue); - if (isNaN(value) || meta.data[index].hidden) { - return; - } - - min = Math.min(value, min); - max = Math.max(value, max); - }); - } - }); - - me.min = (min === Number.POSITIVE_INFINITY ? 0 : min); - me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max); - - // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero - me.handleTickRangeOptions(); - }, - - // Returns the maximum number of ticks based on the scale dimension - _computeTickLimit: function() { - return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options)); - }, - - convertTicksToLabels: function() { - var me = this; - - scale_linearbase.prototype.convertTicksToLabels.call(me); - - // Point labels - me.pointLabels = me.chart.data.labels.map(function() { - var label = helpers$1.callback(me.options.pointLabels.callback, arguments, me); - return label || label === 0 ? label : ''; - }); - }, - - getLabelForIndex: function(index, datasetIndex) { - return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]); - }, - - fit: function() { - var me = this; - var opts = me.options; - - if (opts.display && opts.pointLabels.display) { - fitWithPointLabels(me); - } else { - me.setCenterPoint(0, 0, 0, 0); - } - }, - - /** - * Set radius reductions and determine new radius and center point - * @private - */ - setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) { - var me = this; - var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l); - var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r); - var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t); - var radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b); - - radiusReductionLeft = numberOrZero(radiusReductionLeft); - radiusReductionRight = numberOrZero(radiusReductionRight); - radiusReductionTop = numberOrZero(radiusReductionTop); - radiusReductionBottom = numberOrZero(radiusReductionBottom); - - me.drawingArea = Math.min( - Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2), - Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2)); - me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom); - }, - - setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) { - var me = this; - var maxRight = me.width - rightMovement - me.drawingArea; - var maxLeft = leftMovement + me.drawingArea; - var maxTop = topMovement + me.drawingArea; - var maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea; - - me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left); - me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop); - }, - - getIndexAngle: function(index) { - var chart = this.chart; - var angleMultiplier = 360 / chart.data.labels.length; - var options = chart.options || {}; - var startAngle = options.startAngle || 0; - - // Start from the top instead of right, so remove a quarter of the circle - var angle = (index * angleMultiplier + startAngle) % 360; - - return (angle < 0 ? angle + 360 : angle) * Math.PI * 2 / 360; - }, - - getDistanceFromCenterForValue: function(value) { - var me = this; - - if (helpers$1.isNullOrUndef(value)) { - return NaN; - } - - // Take into account half font size + the yPadding of the top value - var scalingFactor = me.drawingArea / (me.max - me.min); - if (me.options.ticks.reverse) { - return (me.max - value) * scalingFactor; - } - return (value - me.min) * scalingFactor; - }, - - getPointPosition: function(index, distanceFromCenter) { - var me = this; - var thisAngle = me.getIndexAngle(index) - (Math.PI / 2); - return { - x: Math.cos(thisAngle) * distanceFromCenter + me.xCenter, - y: Math.sin(thisAngle) * distanceFromCenter + me.yCenter - }; - }, - - getPointPositionForValue: function(index, value) { - return this.getPointPosition(index, this.getDistanceFromCenterForValue(value)); - }, - - getBasePosition: function(index) { - var me = this; - var min = me.min; - var max = me.max; - - return me.getPointPositionForValue(index || 0, - me.beginAtZero ? 0 : - min < 0 && max < 0 ? max : - min > 0 && max > 0 ? min : - 0); - }, - - /** - * @private - */ - _drawGrid: function() { - var me = this; - var ctx = me.ctx; - var opts = me.options; - var gridLineOpts = opts.gridLines; - var angleLineOpts = opts.angleLines; - var lineWidth = valueOrDefault$c(angleLineOpts.lineWidth, gridLineOpts.lineWidth); - var lineColor = valueOrDefault$c(angleLineOpts.color, gridLineOpts.color); - var i, offset, position; - - if (opts.pointLabels.display) { - drawPointLabels(me); - } - - if (gridLineOpts.display) { - helpers$1.each(me.ticks, function(label, index) { - if (index !== 0) { - offset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]); - drawRadiusLine(me, gridLineOpts, offset, index); - } - }); - } - - if (angleLineOpts.display && lineWidth && lineColor) { - ctx.save(); - ctx.lineWidth = lineWidth; - ctx.strokeStyle = lineColor; - if (ctx.setLineDash) { - ctx.setLineDash(resolve$4([angleLineOpts.borderDash, gridLineOpts.borderDash, []])); - ctx.lineDashOffset = resolve$4([angleLineOpts.borderDashOffset, gridLineOpts.borderDashOffset, 0.0]); - } - - for (i = me.chart.data.labels.length - 1; i >= 0; i--) { - offset = me.getDistanceFromCenterForValue(opts.ticks.reverse ? me.min : me.max); - position = me.getPointPosition(i, offset); - ctx.beginPath(); - ctx.moveTo(me.xCenter, me.yCenter); - ctx.lineTo(position.x, position.y); - ctx.stroke(); - } - - ctx.restore(); - } - }, - - /** - * @private - */ - _drawLabels: function() { - var me = this; - var ctx = me.ctx; - var opts = me.options; - var tickOpts = opts.ticks; - - if (!tickOpts.display) { - return; - } - - var startAngle = me.getIndexAngle(0); - var tickFont = helpers$1.options._parseFont(tickOpts); - var tickFontColor = valueOrDefault$c(tickOpts.fontColor, core_defaults.global.defaultFontColor); - var offset, width; - - ctx.save(); - ctx.font = tickFont.string; - ctx.translate(me.xCenter, me.yCenter); - ctx.rotate(startAngle); - ctx.textAlign = 'center'; - ctx.textBaseline = 'middle'; - - helpers$1.each(me.ticks, function(label, index) { - if (index === 0 && !tickOpts.reverse) { - return; - } - - offset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]); - - if (tickOpts.showLabelBackdrop) { - width = ctx.measureText(label).width; - ctx.fillStyle = tickOpts.backdropColor; - - ctx.fillRect( - -width / 2 - tickOpts.backdropPaddingX, - -offset - tickFont.size / 2 - tickOpts.backdropPaddingY, - width + tickOpts.backdropPaddingX * 2, - tickFont.size + tickOpts.backdropPaddingY * 2 - ); - } - - ctx.fillStyle = tickFontColor; - ctx.fillText(label, 0, -offset); - }); - - ctx.restore(); - }, - - /** - * @private - */ - _drawTitle: helpers$1.noop -}); - -// INTERNAL: static default options, registered in src/index.js -var _defaults$3 = defaultConfig$3; -scale_radialLinear._defaults = _defaults$3; - -var deprecated$1 = helpers$1._deprecated; -var resolve$5 = helpers$1.options.resolve; -var valueOrDefault$d = helpers$1.valueOrDefault; - -// Integer constants are from the ES6 spec. -var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991; -var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991; - -var INTERVALS = { - millisecond: { - common: true, - size: 1, - steps: 1000 - }, - second: { - common: true, - size: 1000, - steps: 60 - }, - minute: { - common: true, - size: 60000, - steps: 60 - }, - hour: { - common: true, - size: 3600000, - steps: 24 - }, - day: { - common: true, - size: 86400000, - steps: 30 - }, - week: { - common: false, - size: 604800000, - steps: 4 - }, - month: { - common: true, - size: 2.628e9, - steps: 12 - }, - quarter: { - common: false, - size: 7.884e9, - steps: 4 - }, - year: { - common: true, - size: 3.154e10 - } -}; - -var UNITS = Object.keys(INTERVALS); - -function sorter(a, b) { - return a - b; -} - -function arrayUnique(items) { - var hash = {}; - var out = []; - var i, ilen, item; - - for (i = 0, ilen = items.length; i < ilen; ++i) { - item = items[i]; - if (!hash[item]) { - hash[item] = true; - out.push(item); - } - } - - return out; -} - -function getMin(options) { - return helpers$1.valueOrDefault(options.time.min, options.ticks.min); -} - -function getMax(options) { - return helpers$1.valueOrDefault(options.time.max, options.ticks.max); -} - -/** - * Returns an array of {time, pos} objects used to interpolate a specific `time` or position - * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is - * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other - * extremity (left + width or top + height). Note that it would be more optimized to directly - * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need - * to create the lookup table. The table ALWAYS contains at least two items: min and max. - * - * @param {number[]} timestamps - timestamps sorted from lowest to highest. - * @param {string} distribution - If 'linear', timestamps will be spread linearly along the min - * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}. - * If 'series', timestamps will be positioned at the same distance from each other. In this - * case, only timestamps that break the time linearity are registered, meaning that in the - * best case, all timestamps are linear, the table contains only min and max. - */ -function buildLookupTable(timestamps, min, max, distribution) { - if (distribution === 'linear' || !timestamps.length) { - return [ - {time: min, pos: 0}, - {time: max, pos: 1} - ]; - } - - var table = []; - var items = [min]; - var i, ilen, prev, curr, next; - - for (i = 0, ilen = timestamps.length; i < ilen; ++i) { - curr = timestamps[i]; - if (curr > min && curr < max) { - items.push(curr); - } - } - - items.push(max); - - for (i = 0, ilen = items.length; i < ilen; ++i) { - next = items[i + 1]; - prev = items[i - 1]; - curr = items[i]; - - // only add points that breaks the scale linearity - if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) { - table.push({time: curr, pos: i / (ilen - 1)}); - } - } - - return table; -} - -// @see adapted from https://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/ -function lookup(table, key, value) { - var lo = 0; - var hi = table.length - 1; - var mid, i0, i1; - - while (lo >= 0 && lo <= hi) { - mid = (lo + hi) >> 1; - i0 = table[mid - 1] || null; - i1 = table[mid]; - - if (!i0) { - // given value is outside table (before first item) - return {lo: null, hi: i1}; - } else if (i1[key] < value) { - lo = mid + 1; - } else if (i0[key] > value) { - hi = mid - 1; - } else { - return {lo: i0, hi: i1}; - } - } - - // given value is outside table (after last item) - return {lo: i1, hi: null}; -} - -/** - * Linearly interpolates the given source `value` using the table items `skey` values and - * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos') - * returns the position for a timestamp equal to 42. If value is out of bounds, values at - * index [0, 1] or [n - 1, n] are used for the interpolation. - */ -function interpolate$1(table, skey, sval, tkey) { - var range = lookup(table, skey, sval); - - // Note: the lookup table ALWAYS contains at least 2 items (min and max) - var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo; - var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi; - - var span = next[skey] - prev[skey]; - var ratio = span ? (sval - prev[skey]) / span : 0; - var offset = (next[tkey] - prev[tkey]) * ratio; - - return prev[tkey] + offset; -} - -function toTimestamp(scale, input) { - var adapter = scale._adapter; - var options = scale.options.time; - var parser = options.parser; - var format = parser || options.format; - var value = input; - - if (typeof parser === 'function') { - value = parser(value); - } - - // Only parse if its not a timestamp already - if (!helpers$1.isFinite(value)) { - value = typeof format === 'string' - ? adapter.parse(value, format) - : adapter.parse(value); - } - - if (value !== null) { - return +value; - } - - // Labels are in an incompatible format and no `parser` has been provided. - // The user might still use the deprecated `format` option for parsing. - if (!parser && typeof format === 'function') { - value = format(input); - - // `format` could return something else than a timestamp, if so, parse it - if (!helpers$1.isFinite(value)) { - value = adapter.parse(value); - } - } - - return value; -} - -function parse(scale, input) { - if (helpers$1.isNullOrUndef(input)) { - return null; - } - - var options = scale.options.time; - var value = toTimestamp(scale, scale.getRightValue(input)); - if (value === null) { - return value; - } - - if (options.round) { - value = +scale._adapter.startOf(value, options.round); - } - - return value; -} - -/** - * Figures out what unit results in an appropriate number of auto-generated ticks - */ -function determineUnitForAutoTicks(minUnit, min, max, capacity) { - var ilen = UNITS.length; - var i, interval, factor; - - for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) { - interval = INTERVALS[UNITS[i]]; - factor = interval.steps ? interval.steps : MAX_INTEGER; - - if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) { - return UNITS[i]; - } - } - - return UNITS[ilen - 1]; -} - -/** - * Figures out what unit to format a set of ticks with - */ -function determineUnitForFormatting(scale, numTicks, minUnit, min, max) { - var i, unit; - - for (i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) { - unit = UNITS[i]; - if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= numTicks - 1) { - return unit; - } - } - - return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0]; -} - -function determineMajorUnit(unit) { - for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) { - if (INTERVALS[UNITS[i]].common) { - return UNITS[i]; - } - } -} - -/** - * Generates a maximum of `capacity` timestamps between min and max, rounded to the - * `minor` unit using the given scale time `options`. - * Important: this method can return ticks outside the min and max range, it's the - * responsibility of the calling code to clamp values if needed. - */ -function generate(scale, min, max, capacity) { - var adapter = scale._adapter; - var options = scale.options; - var timeOpts = options.time; - var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity); - var stepSize = resolve$5([timeOpts.stepSize, timeOpts.unitStepSize, 1]); - var weekday = minor === 'week' ? timeOpts.isoWeekday : false; - var first = min; - var ticks = []; - var time; - - // For 'week' unit, handle the first day of week option - if (weekday) { - first = +adapter.startOf(first, 'isoWeek', weekday); - } - - // Align first ticks on unit - first = +adapter.startOf(first, weekday ? 'day' : minor); - - // Prevent browser from freezing in case user options request millions of milliseconds - if (adapter.diff(max, min, minor) > 100000 * stepSize) { - throw min + ' and ' + max + ' are too far apart with stepSize of ' + stepSize + ' ' + minor; - } - - for (time = first; time < max; time = +adapter.add(time, stepSize, minor)) { - ticks.push(time); - } - - if (time === max || options.bounds === 'ticks') { - ticks.push(time); - } - - return ticks; -} - -/** - * Returns the start and end offsets from edges in the form of {start, end} - * where each value is a relative width to the scale and ranges between 0 and 1. - * They add extra margins on the both sides by scaling down the original scale. - * Offsets are added when the `offset` option is true. - */ -function computeOffsets(table, ticks, min, max, options) { - var start = 0; - var end = 0; - var first, last; - - if (options.offset && ticks.length) { - first = interpolate$1(table, 'time', ticks[0], 'pos'); - if (ticks.length === 1) { - start = 1 - first; - } else { - start = (interpolate$1(table, 'time', ticks[1], 'pos') - first) / 2; - } - last = interpolate$1(table, 'time', ticks[ticks.length - 1], 'pos'); - if (ticks.length === 1) { - end = last; - } else { - end = (last - interpolate$1(table, 'time', ticks[ticks.length - 2], 'pos')) / 2; - } - } - - return {start: start, end: end, factor: 1 / (start + 1 + end)}; -} - -function setMajorTicks(scale, ticks, map, majorUnit) { - var adapter = scale._adapter; - var first = +adapter.startOf(ticks[0].value, majorUnit); - var last = ticks[ticks.length - 1].value; - var major, index; - - for (major = first; major <= last; major = +adapter.add(major, 1, majorUnit)) { - index = map[major]; - if (index >= 0) { - ticks[index].major = true; - } - } - return ticks; -} - -function ticksFromTimestamps(scale, values, majorUnit) { - var ticks = []; - var map = {}; - var ilen = values.length; - var i, value; - - for (i = 0; i < ilen; ++i) { - value = values[i]; - map[value] = i; - - ticks.push({ - value: value, - major: false - }); - } - - // We set the major ticks separately from the above loop because calling startOf for every tick - // is expensive when there is a large number of ticks - return (ilen === 0 || !majorUnit) ? ticks : setMajorTicks(scale, ticks, map, majorUnit); -} - -var defaultConfig$4 = { - position: 'bottom', - - /** - * Data distribution along the scale: - * - 'linear': data are spread according to their time (distances can vary), - * - 'series': data are spread at the same distance from each other. - * @see https://github.com/chartjs/Chart.js/pull/4507 - * @since 2.7.0 - */ - distribution: 'linear', - - /** - * Scale boundary strategy (bypassed by min/max time options) - * - `data`: make sure data are fully visible, ticks outside are removed - * - `ticks`: make sure ticks are fully visible, data outside are truncated - * @see https://github.com/chartjs/Chart.js/pull/4556 - * @since 2.7.0 - */ - bounds: 'data', - - adapters: {}, - time: { - parser: false, // false == a pattern string from https://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment - unit: false, // false == automatic or override with week, month, year, etc. - round: false, // none, or override with week, month, year, etc. - displayFormat: false, // DEPRECATED - isoWeekday: false, // override week start day - see https://momentjs.com/docs/#/get-set/iso-weekday/ - minUnit: 'millisecond', - displayFormats: {} - }, - ticks: { - autoSkip: false, - - /** - * Ticks generation input values: - * - 'auto': generates "optimal" ticks based on scale size and time options. - * - 'data': generates ticks from data (including labels from data {t|x|y} objects). - * - 'labels': generates ticks from user given `data.labels` values ONLY. - * @see https://github.com/chartjs/Chart.js/pull/4507 - * @since 2.7.0 - */ - source: 'auto', - - major: { - enabled: false - } - } -}; - -var scale_time = core_scale.extend({ - initialize: function() { - this.mergeTicksOptions(); - core_scale.prototype.initialize.call(this); - }, - - update: function() { - var me = this; - var options = me.options; - var time = options.time || (options.time = {}); - var adapter = me._adapter = new core_adapters._date(options.adapters.date); - - // DEPRECATIONS: output a message only one time per update - deprecated$1('time scale', time.format, 'time.format', 'time.parser'); - deprecated$1('time scale', time.min, 'time.min', 'ticks.min'); - deprecated$1('time scale', time.max, 'time.max', 'ticks.max'); - - // Backward compatibility: before introducing adapter, `displayFormats` was - // supposed to contain *all* unit/string pairs but this can't be resolved - // when loading the scale (adapters are loaded afterward), so let's populate - // missing formats on update - helpers$1.mergeIf(time.displayFormats, adapter.formats()); - - return core_scale.prototype.update.apply(me, arguments); - }, - - /** - * Allows data to be referenced via 't' attribute - */ - getRightValue: function(rawValue) { - if (rawValue && rawValue.t !== undefined) { - rawValue = rawValue.t; - } - return core_scale.prototype.getRightValue.call(this, rawValue); - }, - - determineDataLimits: function() { - var me = this; - var chart = me.chart; - var adapter = me._adapter; - var options = me.options; - var unit = options.time.unit || 'day'; - var min = MAX_INTEGER; - var max = MIN_INTEGER; - var timestamps = []; - var datasets = []; - var labels = []; - var i, j, ilen, jlen, data, timestamp, labelsAdded; - var dataLabels = me._getLabels(); - - for (i = 0, ilen = dataLabels.length; i < ilen; ++i) { - labels.push(parse(me, dataLabels[i])); - } - - for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { - if (chart.isDatasetVisible(i)) { - data = chart.data.datasets[i].data; - - // Let's consider that all data have the same format. - if (helpers$1.isObject(data[0])) { - datasets[i] = []; - - for (j = 0, jlen = data.length; j < jlen; ++j) { - timestamp = parse(me, data[j]); - timestamps.push(timestamp); - datasets[i][j] = timestamp; - } - } else { - datasets[i] = labels.slice(0); - if (!labelsAdded) { - timestamps = timestamps.concat(labels); - labelsAdded = true; - } - } - } else { - datasets[i] = []; - } - } - - if (labels.length) { - min = Math.min(min, labels[0]); - max = Math.max(max, labels[labels.length - 1]); - } - - if (timestamps.length) { - timestamps = ilen > 1 ? arrayUnique(timestamps).sort(sorter) : timestamps.sort(sorter); - min = Math.min(min, timestamps[0]); - max = Math.max(max, timestamps[timestamps.length - 1]); - } - - min = parse(me, getMin(options)) || min; - max = parse(me, getMax(options)) || max; - - // In case there is no valid min/max, set limits based on unit time option - min = min === MAX_INTEGER ? +adapter.startOf(Date.now(), unit) : min; - max = max === MIN_INTEGER ? +adapter.endOf(Date.now(), unit) + 1 : max; - - // Make sure that max is strictly higher than min (required by the lookup table) - me.min = Math.min(min, max); - me.max = Math.max(min + 1, max); - - // PRIVATE - me._table = []; - me._timestamps = { - data: timestamps, - datasets: datasets, - labels: labels - }; - }, - - buildTicks: function() { - var me = this; - var min = me.min; - var max = me.max; - var options = me.options; - var tickOpts = options.ticks; - var timeOpts = options.time; - var timestamps = me._timestamps; - var ticks = []; - var capacity = me.getLabelCapacity(min); - var source = tickOpts.source; - var distribution = options.distribution; - var i, ilen, timestamp; - - if (source === 'data' || (source === 'auto' && distribution === 'series')) { - timestamps = timestamps.data; - } else if (source === 'labels') { - timestamps = timestamps.labels; - } else { - timestamps = generate(me, min, max, capacity); - } - - if (options.bounds === 'ticks' && timestamps.length) { - min = timestamps[0]; - max = timestamps[timestamps.length - 1]; - } - - // Enforce limits with user min/max options - min = parse(me, getMin(options)) || min; - max = parse(me, getMax(options)) || max; - - // Remove ticks outside the min/max range - for (i = 0, ilen = timestamps.length; i < ilen; ++i) { - timestamp = timestamps[i]; - if (timestamp >= min && timestamp <= max) { - ticks.push(timestamp); - } - } - - me.min = min; - me.max = max; - - // PRIVATE - // determineUnitForFormatting relies on the number of ticks so we don't use it when - // autoSkip is enabled because we don't yet know what the final number of ticks will be - me._unit = timeOpts.unit || (tickOpts.autoSkip - ? determineUnitForAutoTicks(timeOpts.minUnit, me.min, me.max, capacity) - : determineUnitForFormatting(me, ticks.length, timeOpts.minUnit, me.min, me.max)); - me._majorUnit = !tickOpts.major.enabled || me._unit === 'year' ? undefined - : determineMajorUnit(me._unit); - me._table = buildLookupTable(me._timestamps.data, min, max, distribution); - me._offsets = computeOffsets(me._table, ticks, min, max, options); - - if (tickOpts.reverse) { - ticks.reverse(); - } - - return ticksFromTimestamps(me, ticks, me._majorUnit); - }, - - getLabelForIndex: function(index, datasetIndex) { - var me = this; - var adapter = me._adapter; - var data = me.chart.data; - var timeOpts = me.options.time; - var label = data.labels && index < data.labels.length ? data.labels[index] : ''; - var value = data.datasets[datasetIndex].data[index]; - - if (helpers$1.isObject(value)) { - label = me.getRightValue(value); - } - if (timeOpts.tooltipFormat) { - return adapter.format(toTimestamp(me, label), timeOpts.tooltipFormat); - } - if (typeof label === 'string') { - return label; - } - return adapter.format(toTimestamp(me, label), timeOpts.displayFormats.datetime); - }, - - /** - * Function to format an individual tick mark - * @private - */ - tickFormatFunction: function(time, index, ticks, format) { - var me = this; - var adapter = me._adapter; - var options = me.options; - var formats = options.time.displayFormats; - var minorFormat = formats[me._unit]; - var majorUnit = me._majorUnit; - var majorFormat = formats[majorUnit]; - var tick = ticks[index]; - var tickOpts = options.ticks; - var major = majorUnit && majorFormat && tick && tick.major; - var label = adapter.format(time, format ? format : major ? majorFormat : minorFormat); - var nestedTickOpts = major ? tickOpts.major : tickOpts.minor; - var formatter = resolve$5([ - nestedTickOpts.callback, - nestedTickOpts.userCallback, - tickOpts.callback, - tickOpts.userCallback - ]); - - return formatter ? formatter(label, index, ticks) : label; - }, - - convertTicksToLabels: function(ticks) { - var labels = []; - var i, ilen; - - for (i = 0, ilen = ticks.length; i < ilen; ++i) { - labels.push(this.tickFormatFunction(ticks[i].value, i, ticks)); - } - - return labels; - }, - - /** - * @private - */ - getPixelForOffset: function(time) { - var me = this; - var offsets = me._offsets; - var pos = interpolate$1(me._table, 'time', time, 'pos'); - return me.getPixelForDecimal((offsets.start + pos) * offsets.factor); - }, - - getPixelForValue: function(value, index, datasetIndex) { - var me = this; - var time = null; - - if (index !== undefined && datasetIndex !== undefined) { - time = me._timestamps.datasets[datasetIndex][index]; - } - - if (time === null) { - time = parse(me, value); - } - - if (time !== null) { - return me.getPixelForOffset(time); - } - }, - - getPixelForTick: function(index) { - var ticks = this.getTicks(); - return index >= 0 && index < ticks.length ? - this.getPixelForOffset(ticks[index].value) : - null; - }, - - getValueForPixel: function(pixel) { - var me = this; - var offsets = me._offsets; - var pos = me.getDecimalForPixel(pixel) / offsets.factor - offsets.end; - var time = interpolate$1(me._table, 'pos', pos, 'time'); - - // DEPRECATION, we should return time directly - return me._adapter._create(time); - }, - - /** - * @private - */ - _getLabelSize: function(label) { - var me = this; - var ticksOpts = me.options.ticks; - var tickLabelWidth = me.ctx.measureText(label).width; - var angle = helpers$1.toRadians(me.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation); - var cosRotation = Math.cos(angle); - var sinRotation = Math.sin(angle); - var tickFontSize = valueOrDefault$d(ticksOpts.fontSize, core_defaults.global.defaultFontSize); - - return { - w: (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation), - h: (tickLabelWidth * sinRotation) + (tickFontSize * cosRotation) - }; - }, - - /** - * Crude approximation of what the label width might be - * @private - */ - getLabelWidth: function(label) { - return this._getLabelSize(label).w; - }, - - /** - * @private - */ - getLabelCapacity: function(exampleTime) { - var me = this; - var timeOpts = me.options.time; - var displayFormats = timeOpts.displayFormats; - - // pick the longest format (milliseconds) for guestimation - var format = displayFormats[timeOpts.unit] || displayFormats.millisecond; - var exampleLabel = me.tickFormatFunction(exampleTime, 0, ticksFromTimestamps(me, [exampleTime], me._majorUnit), format); - var size = me._getLabelSize(exampleLabel); - var capacity = Math.floor(me.isHorizontal() ? me.width / size.w : me.height / size.h); - - if (me.options.offset) { - capacity--; - } - - return capacity > 0 ? capacity : 1; - } -}); - -// INTERNAL: static default options, registered in src/index.js -var _defaults$4 = defaultConfig$4; -scale_time._defaults = _defaults$4; - -var scales = { - category: scale_category, - linear: scale_linear, - logarithmic: scale_logarithmic, - radialLinear: scale_radialLinear, - time: scale_time -}; - -var FORMATS = { - datetime: 'MMM D, YYYY, h:mm:ss a', - millisecond: 'h:mm:ss.SSS a', - second: 'h:mm:ss a', - minute: 'h:mm a', - hour: 'hA', - day: 'MMM D', - week: 'll', - month: 'MMM YYYY', - quarter: '[Q]Q - YYYY', - year: 'YYYY' -}; - -core_adapters._date.override(typeof moment === 'function' ? { - _id: 'moment', // DEBUG ONLY - - formats: function() { - return FORMATS; - }, - - parse: function(value, format) { - if (typeof value === 'string' && typeof format === 'string') { - value = moment(value, format); - } else if (!(value instanceof moment)) { - value = moment(value); - } - return value.isValid() ? value.valueOf() : null; - }, - - format: function(time, format) { - return moment(time).format(format); - }, - - add: function(time, amount, unit) { - return moment(time).add(amount, unit).valueOf(); - }, - - diff: function(max, min, unit) { - return moment(max).diff(moment(min), unit); - }, - - startOf: function(time, unit, weekday) { - time = moment(time); - if (unit === 'isoWeek') { - return time.isoWeekday(weekday).valueOf(); - } - return time.startOf(unit).valueOf(); - }, - - endOf: function(time, unit) { - return moment(time).endOf(unit).valueOf(); - }, - - // DEPRECATIONS - - /** - * Provided for backward compatibility with scale.getValueForPixel(). - * @deprecated since version 2.8.0 - * @todo remove at version 3 - * @private - */ - _create: function(time) { - return moment(time); - }, -} : {}); - -core_defaults._set('global', { - plugins: { - filler: { - propagate: true - } - } -}); - -var mappers = { - dataset: function(source) { - var index = source.fill; - var chart = source.chart; - var meta = chart.getDatasetMeta(index); - var visible = meta && chart.isDatasetVisible(index); - var points = (visible && meta.dataset._children) || []; - var length = points.length || 0; - - return !length ? null : function(point, i) { - return (i < length && points[i]._view) || null; - }; - }, - - boundary: function(source) { - var boundary = source.boundary; - var x = boundary ? boundary.x : null; - var y = boundary ? boundary.y : null; - - if (helpers$1.isArray(boundary)) { - return function(point, i) { - return boundary[i]; - }; - } - - return function(point) { - return { - x: x === null ? point.x : x, - y: y === null ? point.y : y, - }; - }; - } -}; - -// @todo if (fill[0] === '#') -function decodeFill(el, index, count) { - var model = el._model || {}; - var fill = model.fill; - var target; - - if (fill === undefined) { - fill = !!model.backgroundColor; - } - - if (fill === false || fill === null) { - return false; - } - - if (fill === true) { - return 'origin'; - } - - target = parseFloat(fill, 10); - if (isFinite(target) && Math.floor(target) === target) { - if (fill[0] === '-' || fill[0] === '+') { - target = index + target; - } - - if (target === index || target < 0 || target >= count) { - return false; - } - - return target; - } - - switch (fill) { - // compatibility - case 'bottom': - return 'start'; - case 'top': - return 'end'; - case 'zero': - return 'origin'; - // supported boundaries - case 'origin': - case 'start': - case 'end': - return fill; - // invalid fill values - default: - return false; - } -} - -function computeLinearBoundary(source) { - var model = source.el._model || {}; - var scale = source.el._scale || {}; - var fill = source.fill; - var target = null; - var horizontal; - - if (isFinite(fill)) { - return null; - } - - // Backward compatibility: until v3, we still need to support boundary values set on - // the model (scaleTop, scaleBottom and scaleZero) because some external plugins and - // controllers might still use it (e.g. the Smith chart). - - if (fill === 'start') { - target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom; - } else if (fill === 'end') { - target = model.scaleTop === undefined ? scale.top : model.scaleTop; - } else if (model.scaleZero !== undefined) { - target = model.scaleZero; - } else if (scale.getBasePixel) { - target = scale.getBasePixel(); - } - - if (target !== undefined && target !== null) { - if (target.x !== undefined && target.y !== undefined) { - return target; - } - - if (helpers$1.isFinite(target)) { - horizontal = scale.isHorizontal(); - return { - x: horizontal ? target : null, - y: horizontal ? null : target - }; - } - } - - return null; -} - -function computeCircularBoundary(source) { - var scale = source.el._scale; - var options = scale.options; - var length = scale.chart.data.labels.length; - var fill = source.fill; - var target = []; - var start, end, center, i, point; - - if (!length) { - return null; - } - - start = options.ticks.reverse ? scale.max : scale.min; - end = options.ticks.reverse ? scale.min : scale.max; - center = scale.getPointPositionForValue(0, start); - for (i = 0; i < length; ++i) { - point = fill === 'start' || fill === 'end' - ? scale.getPointPositionForValue(i, fill === 'start' ? start : end) - : scale.getBasePosition(i); - if (options.gridLines.circular) { - point.cx = center.x; - point.cy = center.y; - point.angle = scale.getIndexAngle(i) - Math.PI / 2; - } - target.push(point); - } - return target; -} - -function computeBoundary(source) { - var scale = source.el._scale || {}; - - if (scale.getPointPositionForValue) { - return computeCircularBoundary(source); - } - return computeLinearBoundary(source); -} - -function resolveTarget(sources, index, propagate) { - var source = sources[index]; - var fill = source.fill; - var visited = [index]; - var target; - - if (!propagate) { - return fill; - } - - while (fill !== false && visited.indexOf(fill) === -1) { - if (!isFinite(fill)) { - return fill; - } - - target = sources[fill]; - if (!target) { - return false; - } - - if (target.visible) { - return fill; - } - - visited.push(fill); - fill = target.fill; - } - - return false; -} - -function createMapper(source) { - var fill = source.fill; - var type = 'dataset'; - - if (fill === false) { - return null; - } - - if (!isFinite(fill)) { - type = 'boundary'; - } - - return mappers[type](source); -} - -function isDrawable(point) { - return point && !point.skip; -} - -function drawArea(ctx, curve0, curve1, len0, len1) { - var i, cx, cy, r; - - if (!len0 || !len1) { - return; - } - - // building first area curve (normal) - ctx.moveTo(curve0[0].x, curve0[0].y); - for (i = 1; i < len0; ++i) { - helpers$1.canvas.lineTo(ctx, curve0[i - 1], curve0[i]); - } - - if (curve1[0].angle !== undefined) { - cx = curve1[0].cx; - cy = curve1[0].cy; - r = Math.sqrt(Math.pow(curve1[0].x - cx, 2) + Math.pow(curve1[0].y - cy, 2)); - for (i = len1 - 1; i > 0; --i) { - ctx.arc(cx, cy, r, curve1[i].angle, curve1[i - 1].angle, true); - } - return; - } - - // joining the two area curves - ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y); - - // building opposite area curve (reverse) - for (i = len1 - 1; i > 0; --i) { - helpers$1.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true); - } -} - -function doFill(ctx, points, mapper, view, color, loop) { - var count = points.length; - var span = view.spanGaps; - var curve0 = []; - var curve1 = []; - var len0 = 0; - var len1 = 0; - var i, ilen, index, p0, p1, d0, d1, loopOffset; - - ctx.beginPath(); - - for (i = 0, ilen = count; i < ilen; ++i) { - index = i % count; - p0 = points[index]._view; - p1 = mapper(p0, index, view); - d0 = isDrawable(p0); - d1 = isDrawable(p1); - - if (loop && loopOffset === undefined && d0) { - loopOffset = i + 1; - ilen = count + loopOffset; - } - - if (d0 && d1) { - len0 = curve0.push(p0); - len1 = curve1.push(p1); - } else if (len0 && len1) { - if (!span) { - drawArea(ctx, curve0, curve1, len0, len1); - len0 = len1 = 0; - curve0 = []; - curve1 = []; - } else { - if (d0) { - curve0.push(p0); - } - if (d1) { - curve1.push(p1); - } - } - } - } - - drawArea(ctx, curve0, curve1, len0, len1); - - ctx.closePath(); - ctx.fillStyle = color; - ctx.fill(); -} - -var plugin_filler = { - id: 'filler', - - afterDatasetsUpdate: function(chart, options) { - var count = (chart.data.datasets || []).length; - var propagate = options.propagate; - var sources = []; - var meta, i, el, source; - - for (i = 0; i < count; ++i) { - meta = chart.getDatasetMeta(i); - el = meta.dataset; - source = null; - - if (el && el._model && el instanceof elements.Line) { - source = { - visible: chart.isDatasetVisible(i), - fill: decodeFill(el, i, count), - chart: chart, - el: el - }; - } - - meta.$filler = source; - sources.push(source); - } - - for (i = 0; i < count; ++i) { - source = sources[i]; - if (!source) { - continue; - } - - source.fill = resolveTarget(sources, i, propagate); - source.boundary = computeBoundary(source); - source.mapper = createMapper(source); - } - }, - - beforeDatasetsDraw: function(chart) { - var metasets = chart._getSortedVisibleDatasetMetas(); - var ctx = chart.ctx; - var meta, i, el, view, points, mapper, color; - - for (i = metasets.length - 1; i >= 0; --i) { - meta = metasets[i].$filler; - - if (!meta || !meta.visible) { - continue; - } - - el = meta.el; - view = el._view; - points = el._children || []; - mapper = meta.mapper; - color = view.backgroundColor || core_defaults.global.defaultColor; - - if (mapper && color && points.length) { - helpers$1.canvas.clipArea(ctx, chart.chartArea); - doFill(ctx, points, mapper, view, color, el._loop); - helpers$1.canvas.unclipArea(ctx); - } - } - } -}; - -var getRtlHelper$1 = helpers$1.rtl.getRtlAdapter; -var noop$1 = helpers$1.noop; -var valueOrDefault$e = helpers$1.valueOrDefault; - -core_defaults._set('global', { - legend: { - display: true, - position: 'top', - align: 'center', - fullWidth: true, - reverse: false, - weight: 1000, - - // a callback that will handle - onClick: function(e, legendItem) { - var index = legendItem.datasetIndex; - var ci = this.chart; - var meta = ci.getDatasetMeta(index); - - // See controller.isDatasetVisible comment - meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null; - - // We hid a dataset ... rerender the chart - ci.update(); - }, - - onHover: null, - onLeave: null, - - labels: { - boxWidth: 40, - padding: 10, - // Generates labels shown in the legend - // Valid properties to return: - // text : text to display - // fillStyle : fill of coloured box - // strokeStyle: stroke of coloured box - // hidden : if this legend item refers to a hidden item - // lineCap : cap style for line - // lineDash - // lineDashOffset : - // lineJoin : - // lineWidth : - generateLabels: function(chart) { - var datasets = chart.data.datasets; - var options = chart.options.legend || {}; - var usePointStyle = options.labels && options.labels.usePointStyle; - - return chart._getSortedDatasetMetas().map(function(meta) { - var style = meta.controller.getStyle(usePointStyle ? 0 : undefined); - - return { - text: datasets[meta.index].label, - fillStyle: style.backgroundColor, - hidden: !chart.isDatasetVisible(meta.index), - lineCap: style.borderCapStyle, - lineDash: style.borderDash, - lineDashOffset: style.borderDashOffset, - lineJoin: style.borderJoinStyle, - lineWidth: style.borderWidth, - strokeStyle: style.borderColor, - pointStyle: style.pointStyle, - rotation: style.rotation, - - // Below is extra data used for toggling the datasets - datasetIndex: meta.index - }; - }, this); - } - } - }, - - legendCallback: function(chart) { - var list = document.createElement('ul'); - var datasets = chart.data.datasets; - var i, ilen, listItem, listItemSpan; - - list.setAttribute('class', chart.id + '-legend'); - - for (i = 0, ilen = datasets.length; i < ilen; i++) { - listItem = list.appendChild(document.createElement('li')); - listItemSpan = listItem.appendChild(document.createElement('span')); - listItemSpan.style.backgroundColor = datasets[i].backgroundColor; - if (datasets[i].label) { - listItem.appendChild(document.createTextNode(datasets[i].label)); - } - } - - return list.outerHTML; - } -}); - -/** - * Helper function to get the box width based on the usePointStyle option - * @param {object} labelopts - the label options on the legend - * @param {number} fontSize - the label font size - * @return {number} width of the color box area - */ -function getBoxWidth(labelOpts, fontSize) { - return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ? - fontSize : - labelOpts.boxWidth; -} - -/** - * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required! - */ -var Legend = core_element.extend({ - - initialize: function(config) { - var me = this; - helpers$1.extend(me, config); - - // Contains hit boxes for each dataset (in dataset order) - me.legendHitBoxes = []; - - /** - * @private - */ - me._hoveredItem = null; - - // Are we in doughnut mode which has a different data type - me.doughnutMode = false; - }, - - // These methods are ordered by lifecycle. Utilities then follow. - // Any function defined here is inherited by all legend types. - // Any function can be extended by the legend type - - beforeUpdate: noop$1, - update: function(maxWidth, maxHeight, margins) { - var me = this; - - // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;) - me.beforeUpdate(); - - // Absorb the master measurements - me.maxWidth = maxWidth; - me.maxHeight = maxHeight; - me.margins = margins; - - // Dimensions - me.beforeSetDimensions(); - me.setDimensions(); - me.afterSetDimensions(); - // Labels - me.beforeBuildLabels(); - me.buildLabels(); - me.afterBuildLabels(); - - // Fit - me.beforeFit(); - me.fit(); - me.afterFit(); - // - me.afterUpdate(); - - return me.minSize; - }, - afterUpdate: noop$1, - - // - - beforeSetDimensions: noop$1, - setDimensions: function() { - var me = this; - // Set the unconstrained dimension before label rotation - if (me.isHorizontal()) { - // Reset position before calculating rotation - me.width = me.maxWidth; - me.left = 0; - me.right = me.width; - } else { - me.height = me.maxHeight; - - // Reset position before calculating rotation - me.top = 0; - me.bottom = me.height; - } - - // Reset padding - me.paddingLeft = 0; - me.paddingTop = 0; - me.paddingRight = 0; - me.paddingBottom = 0; - - // Reset minSize - me.minSize = { - width: 0, - height: 0 - }; - }, - afterSetDimensions: noop$1, - - // - - beforeBuildLabels: noop$1, - buildLabels: function() { - var me = this; - var labelOpts = me.options.labels || {}; - var legendItems = helpers$1.callback(labelOpts.generateLabels, [me.chart], me) || []; - - if (labelOpts.filter) { - legendItems = legendItems.filter(function(item) { - return labelOpts.filter(item, me.chart.data); - }); - } - - if (me.options.reverse) { - legendItems.reverse(); - } - - me.legendItems = legendItems; - }, - afterBuildLabels: noop$1, - - // - - beforeFit: noop$1, - fit: function() { - var me = this; - var opts = me.options; - var labelOpts = opts.labels; - var display = opts.display; - - var ctx = me.ctx; - - var labelFont = helpers$1.options._parseFont(labelOpts); - var fontSize = labelFont.size; - - // Reset hit boxes - var hitboxes = me.legendHitBoxes = []; - - var minSize = me.minSize; - var isHorizontal = me.isHorizontal(); - - if (isHorizontal) { - minSize.width = me.maxWidth; // fill all the width - minSize.height = display ? 10 : 0; - } else { - minSize.width = display ? 10 : 0; - minSize.height = me.maxHeight; // fill all the height - } - - // Increase sizes here - if (!display) { - me.width = minSize.width = me.height = minSize.height = 0; - return; - } - ctx.font = labelFont.string; - - if (isHorizontal) { - // Labels - - // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one - var lineWidths = me.lineWidths = [0]; - var totalHeight = 0; - - ctx.textAlign = 'left'; - ctx.textBaseline = 'middle'; - - helpers$1.each(me.legendItems, function(legendItem, i) { - var boxWidth = getBoxWidth(labelOpts, fontSize); - var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width; - - if (i === 0 || lineWidths[lineWidths.length - 1] + width + 2 * labelOpts.padding > minSize.width) { - totalHeight += fontSize + labelOpts.padding; - lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0; - } - - // Store the hitbox width and height here. Final position will be updated in `draw` - hitboxes[i] = { - left: 0, - top: 0, - width: width, - height: fontSize - }; - - lineWidths[lineWidths.length - 1] += width + labelOpts.padding; - }); - - minSize.height += totalHeight; - - } else { - var vPadding = labelOpts.padding; - var columnWidths = me.columnWidths = []; - var columnHeights = me.columnHeights = []; - var totalWidth = labelOpts.padding; - var currentColWidth = 0; - var currentColHeight = 0; - - helpers$1.each(me.legendItems, function(legendItem, i) { - var boxWidth = getBoxWidth(labelOpts, fontSize); - var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width; - - // If too tall, go to new column - if (i > 0 && currentColHeight + fontSize + 2 * vPadding > minSize.height) { - totalWidth += currentColWidth + labelOpts.padding; - columnWidths.push(currentColWidth); // previous column width - columnHeights.push(currentColHeight); - currentColWidth = 0; - currentColHeight = 0; - } - - // Get max width - currentColWidth = Math.max(currentColWidth, itemWidth); - currentColHeight += fontSize + vPadding; - - // Store the hitbox width and height here. Final position will be updated in `draw` - hitboxes[i] = { - left: 0, - top: 0, - width: itemWidth, - height: fontSize - }; - }); - - totalWidth += currentColWidth; - columnWidths.push(currentColWidth); - columnHeights.push(currentColHeight); - minSize.width += totalWidth; - } - - me.width = minSize.width; - me.height = minSize.height; - }, - afterFit: noop$1, - - // Shared Methods - isHorizontal: function() { - return this.options.position === 'top' || this.options.position === 'bottom'; - }, - - // Actually draw the legend on the canvas - draw: function() { - var me = this; - var opts = me.options; - var labelOpts = opts.labels; - var globalDefaults = core_defaults.global; - var defaultColor = globalDefaults.defaultColor; - var lineDefault = globalDefaults.elements.line; - var legendHeight = me.height; - var columnHeights = me.columnHeights; - var legendWidth = me.width; - var lineWidths = me.lineWidths; - - if (!opts.display) { - return; - } - - var rtlHelper = getRtlHelper$1(opts.rtl, me.left, me.minSize.width); - var ctx = me.ctx; - var fontColor = valueOrDefault$e(labelOpts.fontColor, globalDefaults.defaultFontColor); - var labelFont = helpers$1.options._parseFont(labelOpts); - var fontSize = labelFont.size; - var cursor; - - // Canvas setup - ctx.textAlign = rtlHelper.textAlign('left'); - ctx.textBaseline = 'middle'; - ctx.lineWidth = 0.5; - ctx.strokeStyle = fontColor; // for strikethrough effect - ctx.fillStyle = fontColor; // render in correct colour - ctx.font = labelFont.string; - - var boxWidth = getBoxWidth(labelOpts, fontSize); - var hitboxes = me.legendHitBoxes; - - // current position - var drawLegendBox = function(x, y, legendItem) { - if (isNaN(boxWidth) || boxWidth <= 0) { - return; - } - - // Set the ctx for the box - ctx.save(); - - var lineWidth = valueOrDefault$e(legendItem.lineWidth, lineDefault.borderWidth); - ctx.fillStyle = valueOrDefault$e(legendItem.fillStyle, defaultColor); - ctx.lineCap = valueOrDefault$e(legendItem.lineCap, lineDefault.borderCapStyle); - ctx.lineDashOffset = valueOrDefault$e(legendItem.lineDashOffset, lineDefault.borderDashOffset); - ctx.lineJoin = valueOrDefault$e(legendItem.lineJoin, lineDefault.borderJoinStyle); - ctx.lineWidth = lineWidth; - ctx.strokeStyle = valueOrDefault$e(legendItem.strokeStyle, defaultColor); - - if (ctx.setLineDash) { - // IE 9 and 10 do not support line dash - ctx.setLineDash(valueOrDefault$e(legendItem.lineDash, lineDefault.borderDash)); - } - - if (labelOpts && labelOpts.usePointStyle) { - // Recalculate x and y for drawPoint() because its expecting - // x and y to be center of figure (instead of top left) - var radius = boxWidth * Math.SQRT2 / 2; - var centerX = rtlHelper.xPlus(x, boxWidth / 2); - var centerY = y + fontSize / 2; - - // Draw pointStyle as legend symbol - helpers$1.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY, legendItem.rotation); - } else { - // Draw box as legend symbol - ctx.fillRect(rtlHelper.leftForLtr(x, boxWidth), y, boxWidth, fontSize); - if (lineWidth !== 0) { - ctx.strokeRect(rtlHelper.leftForLtr(x, boxWidth), y, boxWidth, fontSize); - } - } - - ctx.restore(); - }; - - var fillText = function(x, y, legendItem, textWidth) { - var halfFontSize = fontSize / 2; - var xLeft = rtlHelper.xPlus(x, boxWidth + halfFontSize); - var yMiddle = y + halfFontSize; - - ctx.fillText(legendItem.text, xLeft, yMiddle); - - if (legendItem.hidden) { - // Strikethrough the text if hidden - ctx.beginPath(); - ctx.lineWidth = 2; - ctx.moveTo(xLeft, yMiddle); - ctx.lineTo(rtlHelper.xPlus(xLeft, textWidth), yMiddle); - ctx.stroke(); - } - }; - - var alignmentOffset = function(dimension, blockSize) { - switch (opts.align) { - case 'start': - return labelOpts.padding; - case 'end': - return dimension - blockSize; - default: // center - return (dimension - blockSize + labelOpts.padding) / 2; - } - }; - - // Horizontal - var isHorizontal = me.isHorizontal(); - if (isHorizontal) { - cursor = { - x: me.left + alignmentOffset(legendWidth, lineWidths[0]), - y: me.top + labelOpts.padding, - line: 0 - }; - } else { - cursor = { - x: me.left + labelOpts.padding, - y: me.top + alignmentOffset(legendHeight, columnHeights[0]), - line: 0 - }; - } - - helpers$1.rtl.overrideTextDirection(me.ctx, opts.textDirection); - - var itemHeight = fontSize + labelOpts.padding; - helpers$1.each(me.legendItems, function(legendItem, i) { - var textWidth = ctx.measureText(legendItem.text).width; - var width = boxWidth + (fontSize / 2) + textWidth; - var x = cursor.x; - var y = cursor.y; - - rtlHelper.setWidth(me.minSize.width); - - // Use (me.left + me.minSize.width) and (me.top + me.minSize.height) - // instead of me.right and me.bottom because me.width and me.height - // may have been changed since me.minSize was calculated - if (isHorizontal) { - if (i > 0 && x + width + labelOpts.padding > me.left + me.minSize.width) { - y = cursor.y += itemHeight; - cursor.line++; - x = cursor.x = me.left + alignmentOffset(legendWidth, lineWidths[cursor.line]); - } - } else if (i > 0 && y + itemHeight > me.top + me.minSize.height) { - x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding; - cursor.line++; - y = cursor.y = me.top + alignmentOffset(legendHeight, columnHeights[cursor.line]); - } - - var realX = rtlHelper.x(x); - - drawLegendBox(realX, y, legendItem); - - hitboxes[i].left = rtlHelper.leftForLtr(realX, hitboxes[i].width); - hitboxes[i].top = y; +function isValidKey(key) { + return ['__proto__', 'prototype', 'constructor'].indexOf(key) === -1; +} + +/** + * @namespace Chart.helpers + */ +var helpers = { + /** + * An empty function that can be used, for example, for optional callback. + */ + noop: function() {}, + + /** + * Returns a unique id, sequentially generated from a global variable. + * @returns {number} + * @function + */ + uid: (function() { + var id = 0; + return function() { + return id++; + }; + }()), + + /** + * Returns true if `value` is neither null nor undefined, else returns false. + * @param {*} value - The value to test. + * @returns {boolean} + * @since 2.7.0 + */ + isNullOrUndef: function(value) { + return value === null || typeof value === 'undefined'; + }, + + /** + * Returns true if `value` is an array (including typed arrays), else returns false. + * @param {*} value - The value to test. + * @returns {boolean} + * @function + */ + isArray: function(value) { + if (Array.isArray && Array.isArray(value)) { + return true; + } + var type = Object.prototype.toString.call(value); + if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') { + return true; + } + return false; + }, + + /** + * Returns true if `value` is an object (excluding null), else returns false. + * @param {*} value - The value to test. + * @returns {boolean} + * @since 2.7.0 + */ + isObject: function(value) { + return value !== null && Object.prototype.toString.call(value) === '[object Object]'; + }, + + /** + * Returns true if `value` is a finite number, else returns false + * @param {*} value - The value to test. + * @returns {boolean} + */ + isFinite: function(value) { + return (typeof value === 'number' || value instanceof Number) && isFinite(value); + }, + + /** + * Returns `value` if defined, else returns `defaultValue`. + * @param {*} value - The value to return if defined. + * @param {*} defaultValue - The value to return if `value` is undefined. + * @returns {*} + */ + valueOrDefault: function(value, defaultValue) { + return typeof value === 'undefined' ? defaultValue : value; + }, + + /** + * Returns value at the given `index` in array if defined, else returns `defaultValue`. + * @param {Array} value - The array to lookup for value at `index`. + * @param {number} index - The index in `value` to lookup for value. + * @param {*} defaultValue - The value to return if `value[index]` is undefined. + * @returns {*} + */ + valueAtIndexOrDefault: function(value, index, defaultValue) { + return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue); + }, + + /** + * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the + * value returned by `fn`. If `fn` is not a function, this method returns undefined. + * @param {function} fn - The function to call. + * @param {Array|undefined|null} args - The arguments with which `fn` should be called. + * @param {object} [thisArg] - The value of `this` provided for the call to `fn`. + * @returns {*} + */ + callback: function(fn, args, thisArg) { + if (fn && typeof fn.call === 'function') { + return fn.apply(thisArg, args); + } + }, + + /** + * Note(SB) for performance sake, this method should only be used when loopable type + * is unknown or in none intensive code (not called often and small loopable). Else + * it's preferable to use a regular for() loop and save extra function calls. + * @param {object|Array} loopable - The object or array to be iterated. + * @param {function} fn - The function to call for each item. + * @param {object} [thisArg] - The value of `this` provided for the call to `fn`. + * @param {boolean} [reverse] - If true, iterates backward on the loopable. + */ + each: function(loopable, fn, thisArg, reverse) { + var i, len, keys; + if (helpers.isArray(loopable)) { + len = loopable.length; + if (reverse) { + for (i = len - 1; i >= 0; i--) { + fn.call(thisArg, loopable[i], i); + } + } else { + for (i = 0; i < len; i++) { + fn.call(thisArg, loopable[i], i); + } + } + } else if (helpers.isObject(loopable)) { + keys = Object.keys(loopable); + len = keys.length; + for (i = 0; i < len; i++) { + fn.call(thisArg, loopable[keys[i]], keys[i]); + } + } + }, + + /** + * Returns true if the `a0` and `a1` arrays have the same content, else returns false. + * @see https://stackoverflow.com/a/14853974 + * @param {Array} a0 - The array to compare + * @param {Array} a1 - The array to compare + * @returns {boolean} + */ + arrayEquals: function(a0, a1) { + var i, ilen, v0, v1; + + if (!a0 || !a1 || a0.length !== a1.length) { + return false; + } + + for (i = 0, ilen = a0.length; i < ilen; ++i) { + v0 = a0[i]; + v1 = a1[i]; + + if (v0 instanceof Array && v1 instanceof Array) { + if (!helpers.arrayEquals(v0, v1)) { + return false; + } + } else if (v0 !== v1) { + // NOTE: two different object instances will never be equal: {x:20} != {x:20} + return false; + } + } + + return true; + }, + + /** + * Returns a deep copy of `source` without keeping references on objects and arrays. + * @param {*} source - The value to clone. + * @returns {*} + */ + clone: function(source) { + if (helpers.isArray(source)) { + return source.map(helpers.clone); + } + + if (helpers.isObject(source)) { + var target = Object.create(source); + var keys = Object.keys(source); + var klen = keys.length; + var k = 0; + + for (; k < klen; ++k) { + target[keys[k]] = helpers.clone(source[keys[k]]); + } + + return target; + } + + return source; + }, + + /** + * The default merger when Chart.helpers.merge is called without merger option. + * Note(SB): also used by mergeConfig and mergeScaleConfig as fallback. + * @private + */ + _merger: function(key, target, source, options) { + if (!isValidKey(key)) { + // We want to ensure we do not copy prototypes over + // as this can pollute global namespaces + return; + } + + var tval = target[key]; + var sval = source[key]; + + if (helpers.isObject(tval) && helpers.isObject(sval)) { + helpers.merge(tval, sval, options); + } else { + target[key] = helpers.clone(sval); + } + }, + + /** + * Merges source[key] in target[key] only if target[key] is undefined. + * @private + */ + _mergerIf: function(key, target, source) { + if (!isValidKey(key)) { + // We want to ensure we do not copy prototypes over + // as this can pollute global namespaces + return; + } + + var tval = target[key]; + var sval = source[key]; + + if (helpers.isObject(tval) && helpers.isObject(sval)) { + helpers.mergeIf(tval, sval); + } else if (!target.hasOwnProperty(key)) { + target[key] = helpers.clone(sval); + } + }, + + /** + * Recursively deep copies `source` properties into `target` with the given `options`. + * IMPORTANT: `target` is not cloned and will be updated with `source` properties. + * @param {object} target - The target object in which all sources are merged into. + * @param {object|object[]} source - Object(s) to merge into `target`. + * @param {object} [options] - Merging options: + * @param {function} [options.merger] - The merge method (key, target, source, options) + * @returns {object} The `target` object. + */ + merge: function(target, source, options) { + var sources = helpers.isArray(source) ? source : [source]; + var ilen = sources.length; + var merge, i, keys, klen, k; + + if (!helpers.isObject(target)) { + return target; + } + + options = options || {}; + merge = options.merger || helpers._merger; + + for (i = 0; i < ilen; ++i) { + source = sources[i]; + if (!helpers.isObject(source)) { + continue; + } + + keys = Object.keys(source); + for (k = 0, klen = keys.length; k < klen; ++k) { + merge(keys[k], target, source, options); + } + } + + return target; + }, + + /** + * Recursively deep copies `source` properties into `target` *only* if not defined in target. + * IMPORTANT: `target` is not cloned and will be updated with `source` properties. + * @param {object} target - The target object in which all sources are merged into. + * @param {object|object[]} source - Object(s) to merge into `target`. + * @returns {object} The `target` object. + */ + mergeIf: function(target, source) { + return helpers.merge(target, source, {merger: helpers._mergerIf}); + }, + + /** + * Applies the contents of two or more objects together into the first object. + * @param {object} target - The target object in which all objects are merged into. + * @param {object} arg1 - Object containing additional properties to merge in target. + * @param {object} argN - Additional objects containing properties to merge in target. + * @returns {object} The `target` object. + */ + extend: Object.assign || function(target) { + return helpers.merge(target, [].slice.call(arguments, 1), { + merger: function(key, dst, src) { + dst[key] = src[key]; + } + }); + }, + + /** + * Basic javascript inheritance based on the model created in Backbone.js + */ + inherits: function(extensions) { + var me = this; + var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() { + return me.apply(this, arguments); + }; + + var Surrogate = function() { + this.constructor = ChartElement; + }; + + Surrogate.prototype = me.prototype; + ChartElement.prototype = new Surrogate(); + ChartElement.extend = helpers.inherits; + + if (extensions) { + helpers.extend(ChartElement.prototype, extensions); + } + + ChartElement.__super__ = me.prototype; + return ChartElement; + }, + + _deprecated: function(scope, value, previous, current) { + if (value !== undefined) { + console.warn(scope + ': "' + previous + + '" is deprecated. Please use "' + current + '" instead'); + } + } +}; + +var helpers_core = helpers; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart.helpers.callback instead. + * @function Chart.helpers.callCallback + * @deprecated since version 2.6.0 + * @todo remove at version 3 + * @private + */ +helpers.callCallback = helpers.callback; + +/** + * Provided for backward compatibility, use Array.prototype.indexOf instead. + * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+ + * @function Chart.helpers.indexOf + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers.indexOf = function(array, item, fromIndex) { + return Array.prototype.indexOf.call(array, item, fromIndex); +}; + +/** + * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead. + * @function Chart.helpers.getValueOrDefault + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers.getValueOrDefault = helpers.valueOrDefault; + +/** + * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead. + * @function Chart.helpers.getValueAtIndexOrDefault + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault; - // Fill the actual label - fillText(realX, y, legendItem, textWidth); +/** + * Easing functions adapted from Robert Penner's easing equations. + * @namespace Chart.helpers.easingEffects + * @see http://www.robertpenner.com/easing/ + */ +var effects = { + linear: function(t) { + return t; + }, + + easeInQuad: function(t) { + return t * t; + }, + + easeOutQuad: function(t) { + return -t * (t - 2); + }, + + easeInOutQuad: function(t) { + if ((t /= 0.5) < 1) { + return 0.5 * t * t; + } + return -0.5 * ((--t) * (t - 2) - 1); + }, + + easeInCubic: function(t) { + return t * t * t; + }, + + easeOutCubic: function(t) { + return (t = t - 1) * t * t + 1; + }, + + easeInOutCubic: function(t) { + if ((t /= 0.5) < 1) { + return 0.5 * t * t * t; + } + return 0.5 * ((t -= 2) * t * t + 2); + }, + + easeInQuart: function(t) { + return t * t * t * t; + }, + + easeOutQuart: function(t) { + return -((t = t - 1) * t * t * t - 1); + }, + + easeInOutQuart: function(t) { + if ((t /= 0.5) < 1) { + return 0.5 * t * t * t * t; + } + return -0.5 * ((t -= 2) * t * t * t - 2); + }, + + easeInQuint: function(t) { + return t * t * t * t * t; + }, + + easeOutQuint: function(t) { + return (t = t - 1) * t * t * t * t + 1; + }, + + easeInOutQuint: function(t) { + if ((t /= 0.5) < 1) { + return 0.5 * t * t * t * t * t; + } + return 0.5 * ((t -= 2) * t * t * t * t + 2); + }, + + easeInSine: function(t) { + return -Math.cos(t * (Math.PI / 2)) + 1; + }, + + easeOutSine: function(t) { + return Math.sin(t * (Math.PI / 2)); + }, + + easeInOutSine: function(t) { + return -0.5 * (Math.cos(Math.PI * t) - 1); + }, + + easeInExpo: function(t) { + return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1)); + }, + + easeOutExpo: function(t) { + return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1; + }, + + easeInOutExpo: function(t) { + if (t === 0) { + return 0; + } + if (t === 1) { + return 1; + } + if ((t /= 0.5) < 1) { + return 0.5 * Math.pow(2, 10 * (t - 1)); + } + return 0.5 * (-Math.pow(2, -10 * --t) + 2); + }, + + easeInCirc: function(t) { + if (t >= 1) { + return t; + } + return -(Math.sqrt(1 - t * t) - 1); + }, + + easeOutCirc: function(t) { + return Math.sqrt(1 - (t = t - 1) * t); + }, + + easeInOutCirc: function(t) { + if ((t /= 0.5) < 1) { + return -0.5 * (Math.sqrt(1 - t * t) - 1); + } + return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1); + }, + + easeInElastic: function(t) { + var s = 1.70158; + var p = 0; + var a = 1; + if (t === 0) { + return 0; + } + if (t === 1) { + return 1; + } + if (!p) { + p = 0.3; + } + if (a < 1) { + a = 1; + s = p / 4; + } else { + s = p / (2 * Math.PI) * Math.asin(1 / a); + } + return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p)); + }, + + easeOutElastic: function(t) { + var s = 1.70158; + var p = 0; + var a = 1; + if (t === 0) { + return 0; + } + if (t === 1) { + return 1; + } + if (!p) { + p = 0.3; + } + if (a < 1) { + a = 1; + s = p / 4; + } else { + s = p / (2 * Math.PI) * Math.asin(1 / a); + } + return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1; + }, + + easeInOutElastic: function(t) { + var s = 1.70158; + var p = 0; + var a = 1; + if (t === 0) { + return 0; + } + if ((t /= 0.5) === 2) { + return 1; + } + if (!p) { + p = 0.45; + } + if (a < 1) { + a = 1; + s = p / 4; + } else { + s = p / (2 * Math.PI) * Math.asin(1 / a); + } + if (t < 1) { + return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p)); + } + return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1; + }, + easeInBack: function(t) { + var s = 1.70158; + return t * t * ((s + 1) * t - s); + }, + + easeOutBack: function(t) { + var s = 1.70158; + return (t = t - 1) * t * ((s + 1) * t + s) + 1; + }, + + easeInOutBack: function(t) { + var s = 1.70158; + if ((t /= 0.5) < 1) { + return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s)); + } + return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2); + }, + + easeInBounce: function(t) { + return 1 - effects.easeOutBounce(1 - t); + }, + + easeOutBounce: function(t) { + if (t < (1 / 2.75)) { + return 7.5625 * t * t; + } + if (t < (2 / 2.75)) { + return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75; + } + if (t < (2.5 / 2.75)) { + return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375; + } + return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375; + }, + + easeInOutBounce: function(t) { + if (t < 0.5) { + return effects.easeInBounce(t * 2) * 0.5; + } + return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5; + } +}; + +var helpers_easing = { + effects: effects +}; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart.helpers.easing.effects instead. + * @function Chart.helpers.easingEffects + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers_core.easingEffects = effects; - if (isHorizontal) { - cursor.x += width + labelOpts.padding; - } else { - cursor.y += itemHeight; - } - }); +var PI = Math.PI; +var RAD_PER_DEG = PI / 180; +var DOUBLE_PI = PI * 2; +var HALF_PI = PI / 2; +var QUARTER_PI = PI / 4; +var TWO_THIRDS_PI = PI * 2 / 3; + +/** + * @namespace Chart.helpers.canvas + */ +var exports$1 = { + /** + * Clears the entire canvas associated to the given `chart`. + * @param {Chart} chart - The chart for which to clear the canvas. + */ + clear: function(chart) { + chart.ctx.clearRect(0, 0, chart.width, chart.height); + }, + + /** + * Creates a "path" for a rectangle with rounded corners at position (x, y) with a + * given size (width, height) and the same `radius` for all corners. + * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context. + * @param {number} x - The x axis of the coordinate for the rectangle starting point. + * @param {number} y - The y axis of the coordinate for the rectangle starting point. + * @param {number} width - The rectangle's width. + * @param {number} height - The rectangle's height. + * @param {number} radius - The rounded amount (in pixels) for the four corners. + * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object? + */ + roundedRect: function(ctx, x, y, width, height, radius) { + if (radius) { + var r = Math.min(radius, height / 2, width / 2); + var left = x + r; + var top = y + r; + var right = x + width - r; + var bottom = y + height - r; + + ctx.moveTo(x, top); + if (left < right && top < bottom) { + ctx.arc(left, top, r, -PI, -HALF_PI); + ctx.arc(right, top, r, -HALF_PI, 0); + ctx.arc(right, bottom, r, 0, HALF_PI); + ctx.arc(left, bottom, r, HALF_PI, PI); + } else if (left < right) { + ctx.moveTo(left, y); + ctx.arc(right, top, r, -HALF_PI, HALF_PI); + ctx.arc(left, top, r, HALF_PI, PI + HALF_PI); + } else if (top < bottom) { + ctx.arc(left, top, r, -PI, 0); + ctx.arc(left, bottom, r, 0, PI); + } else { + ctx.arc(left, top, r, -PI, PI); + } + ctx.closePath(); + ctx.moveTo(x, y); + } else { + ctx.rect(x, y, width, height); + } + }, + + drawPoint: function(ctx, style, radius, x, y, rotation) { + var type, xOffset, yOffset, size, cornerRadius; + var rad = (rotation || 0) * RAD_PER_DEG; + + if (style && typeof style === 'object') { + type = style.toString(); + if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') { + ctx.save(); + ctx.translate(x, y); + ctx.rotate(rad); + ctx.drawImage(style, -style.width / 2, -style.height / 2, style.width, style.height); + ctx.restore(); + return; + } + } + + if (isNaN(radius) || radius <= 0) { + return; + } + + ctx.beginPath(); + + switch (style) { + // Default includes circle + default: + ctx.arc(x, y, radius, 0, DOUBLE_PI); + ctx.closePath(); + break; + case 'triangle': + ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); + rad += TWO_THIRDS_PI; + ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); + rad += TWO_THIRDS_PI; + ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); + ctx.closePath(); + break; + case 'rectRounded': + // NOTE: the rounded rect implementation changed to use `arc` instead of + // `quadraticCurveTo` since it generates better results when rect is + // almost a circle. 0.516 (instead of 0.5) produces results with visually + // closer proportion to the previous impl and it is inscribed in the + // circle with `radius`. For more details, see the following PRs: + // https://github.com/chartjs/Chart.js/issues/5597 + // https://github.com/chartjs/Chart.js/issues/5858 + cornerRadius = radius * 0.516; + size = radius - cornerRadius; + xOffset = Math.cos(rad + QUARTER_PI) * size; + yOffset = Math.sin(rad + QUARTER_PI) * size; + ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI); + ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad); + ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI); + ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI); + ctx.closePath(); + break; + case 'rect': + if (!rotation) { + size = Math.SQRT1_2 * radius; + ctx.rect(x - size, y - size, 2 * size, 2 * size); + break; + } + rad += QUARTER_PI; + /* falls through */ + case 'rectRot': + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + yOffset, y - xOffset); + ctx.lineTo(x + xOffset, y + yOffset); + ctx.lineTo(x - yOffset, y + xOffset); + ctx.closePath(); + break; + case 'crossRot': + rad += QUARTER_PI; + /* falls through */ + case 'cross': + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + xOffset, y + yOffset); + ctx.moveTo(x + yOffset, y - xOffset); + ctx.lineTo(x - yOffset, y + xOffset); + break; + case 'star': + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + xOffset, y + yOffset); + ctx.moveTo(x + yOffset, y - xOffset); + ctx.lineTo(x - yOffset, y + xOffset); + rad += QUARTER_PI; + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + xOffset, y + yOffset); + ctx.moveTo(x + yOffset, y - xOffset); + ctx.lineTo(x - yOffset, y + xOffset); + break; + case 'line': + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + xOffset, y + yOffset); + break; + case 'dash': + ctx.moveTo(x, y); + ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius); + break; + } + + ctx.fill(); + ctx.stroke(); + }, + + /** + * Returns true if the point is inside the rectangle + * @param {object} point - The point to test + * @param {object} area - The rectangle + * @returns {boolean} + * @private + */ + _isPointInArea: function(point, area) { + var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error. + + return point.x > area.left - epsilon && point.x < area.right + epsilon && + point.y > area.top - epsilon && point.y < area.bottom + epsilon; + }, + + clipArea: function(ctx, area) { + ctx.save(); + ctx.beginPath(); + ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top); + ctx.clip(); + }, + + unclipArea: function(ctx) { + ctx.restore(); + }, + + lineTo: function(ctx, previous, target, flip) { + var stepped = target.steppedLine; + if (stepped) { + if (stepped === 'middle') { + var midpoint = (previous.x + target.x) / 2.0; + ctx.lineTo(midpoint, flip ? target.y : previous.y); + ctx.lineTo(midpoint, flip ? previous.y : target.y); + } else if ((stepped === 'after' && !flip) || (stepped !== 'after' && flip)) { + ctx.lineTo(previous.x, target.y); + } else { + ctx.lineTo(target.x, previous.y); + } + ctx.lineTo(target.x, target.y); + return; + } + + if (!target.tension) { + ctx.lineTo(target.x, target.y); + return; + } + + ctx.bezierCurveTo( + flip ? previous.controlPointPreviousX : previous.controlPointNextX, + flip ? previous.controlPointPreviousY : previous.controlPointNextY, + flip ? target.controlPointNextX : target.controlPointPreviousX, + flip ? target.controlPointNextY : target.controlPointPreviousY, + target.x, + target.y); + } +}; + +var helpers_canvas = exports$1; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart.helpers.canvas.clear instead. + * @namespace Chart.helpers.clear + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers_core.clear = exports$1.clear; + +/** + * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead. + * @namespace Chart.helpers.drawRoundedRectangle + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers_core.drawRoundedRectangle = function(ctx) { + ctx.beginPath(); + exports$1.roundedRect.apply(exports$1, arguments); +}; - helpers$1.rtl.restoreTextDirection(me.ctx, opts.textDirection); - }, +var defaults = { + /** + * @private + */ + _set: function(scope, values) { + return helpers_core.merge(this[scope] || (this[scope] = {}), values); + } +}; + +// TODO(v3): remove 'global' from namespace. all default are global and +// there's inconsistency around which options are under 'global' +defaults._set('global', { + defaultColor: 'rgba(0,0,0,0.1)', + defaultFontColor: '#666', + defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif", + defaultFontSize: 12, + defaultFontStyle: 'normal', + defaultLineHeight: 1.2, + showLines: true +}); + +var core_defaults = defaults; - /** - * @private - */ - _getLegendItemAt: function(x, y) { - var me = this; - var i, hitBox, lh; - - if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) { - // See if we are touching one of the dataset boxes - lh = me.legendHitBoxes; - for (i = 0; i < lh.length; ++i) { - hitBox = lh[i]; - - if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) { - // Touching an element - return me.legendItems[i]; - } - } - } +var valueOrDefault = helpers_core.valueOrDefault; + +/** + * Converts the given font object into a CSS font string. + * @param {object} font - A font object. + * @return {string} The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font + * @private + */ +function toFontString(font) { + if (!font || helpers_core.isNullOrUndef(font.size) || helpers_core.isNullOrUndef(font.family)) { + return null; + } + + return (font.style ? font.style + ' ' : '') + + (font.weight ? font.weight + ' ' : '') + + font.size + 'px ' + + font.family; +} + +/** + * @alias Chart.helpers.options + * @namespace + */ +var helpers_options = { + /** + * Converts the given line height `value` in pixels for a specific font `size`. + * @param {number|string} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em'). + * @param {number} size - The font size (in pixels) used to resolve relative `value`. + * @returns {number} The effective line height in pixels (size * 1.2 if value is invalid). + * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height + * @since 2.7.0 + */ + toLineHeight: function(value, size) { + var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/); + if (!matches || matches[1] === 'normal') { + return size * 1.2; + } + + value = +matches[2]; + + switch (matches[3]) { + case 'px': + return value; + case '%': + value /= 100; + break; + } + + return size * value; + }, + + /** + * Converts the given value into a padding object with pre-computed width/height. + * @param {number|object} value - If a number, set the value to all TRBL component, + * else, if and object, use defined properties and sets undefined ones to 0. + * @returns {object} The padding values (top, right, bottom, left, width, height) + * @since 2.7.0 + */ + toPadding: function(value) { + var t, r, b, l; + + if (helpers_core.isObject(value)) { + t = +value.top || 0; + r = +value.right || 0; + b = +value.bottom || 0; + l = +value.left || 0; + } else { + t = r = b = l = +value || 0; + } + + return { + top: t, + right: r, + bottom: b, + left: l, + height: t + b, + width: l + r + }; + }, + + /** + * Parses font options and returns the font object. + * @param {object} options - A object that contains font options to be parsed. + * @return {object} The font object. + * @todo Support font.* options and renamed to toFont(). + * @private + */ + _parseFont: function(options) { + var globalDefaults = core_defaults.global; + var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize); + var font = { + family: valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily), + lineHeight: helpers_core.options.toLineHeight(valueOrDefault(options.lineHeight, globalDefaults.defaultLineHeight), size), + size: size, + style: valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle), + weight: null, + string: '' + }; + + font.string = toFontString(font); + return font; + }, + + /** + * Evaluates the given `inputs` sequentially and returns the first defined value. + * @param {Array} inputs - An array of values, falling back to the last value. + * @param {object} [context] - If defined and the current value is a function, the value + * is called with `context` as first argument and the result becomes the new input. + * @param {number} [index] - If defined and the current value is an array, the value + * at `index` become the new input. + * @param {object} [info] - object to return information about resolution in + * @param {boolean} [info.cacheable] - Will be set to `false` if option is not cacheable. + * @since 2.7.0 + */ + resolve: function(inputs, context, index, info) { + var cacheable = true; + var i, ilen, value; + + for (i = 0, ilen = inputs.length; i < ilen; ++i) { + value = inputs[i]; + if (value === undefined) { + continue; + } + if (context !== undefined && typeof value === 'function') { + value = value(context); + cacheable = false; + } + if (index !== undefined && helpers_core.isArray(value)) { + value = value[index]; + cacheable = false; + } + if (value !== undefined) { + if (info && !cacheable) { + info.cacheable = false; + } + return value; + } + } + } +}; - return null; - }, +/** + * @alias Chart.helpers.math + * @namespace + */ +var exports$2 = { + /** + * Returns an array of factors sorted from 1 to sqrt(value) + * @private + */ + _factorize: function(value) { + var result = []; + var sqrt = Math.sqrt(value); + var i; + + for (i = 1; i < sqrt; i++) { + if (value % i === 0) { + result.push(i); + result.push(value / i); + } + } + if (sqrt === (sqrt | 0)) { // if value is a square number + result.push(sqrt); + } + + result.sort(function(a, b) { + return a - b; + }).pop(); + return result; + }, + + log10: Math.log10 || function(x) { + var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10. + // Check for whole powers of 10, + // which due to floating point rounding error should be corrected. + var powerOf10 = Math.round(exponent); + var isPowerOf10 = x === Math.pow(10, powerOf10); + + return isPowerOf10 ? powerOf10 : exponent; + } +}; + +var helpers_math = exports$2; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart.helpers.math.log10 instead. + * @namespace Chart.helpers.log10 + * @deprecated since version 2.9.0 + * @todo remove at version 3 + * @private + */ +helpers_core.log10 = exports$2.log10; - /** - * Handle an event - * @private - * @param {IEvent} event - The event to handle - */ - handleEvent: function(e) { - var me = this; - var opts = me.options; - var type = e.type === 'mouseup' ? 'click' : e.type; - var hoveredItem; - - if (type === 'mousemove') { - if (!opts.onHover && !opts.onLeave) { - return; - } - } else if (type === 'click') { - if (!opts.onClick) { - return; - } - } else { - return; - } +var getRtlAdapter = function(rectX, width) { + return { + x: function(x) { + return rectX + rectX + width - x; + }, + setWidth: function(w) { + width = w; + }, + textAlign: function(align) { + if (align === 'center') { + return align; + } + return align === 'right' ? 'left' : 'right'; + }, + xPlus: function(x, value) { + return x - value; + }, + leftForLtr: function(x, itemWidth) { + return x - itemWidth; + }, + }; +}; + +var getLtrAdapter = function() { + return { + x: function(x) { + return x; + }, + setWidth: function(w) { // eslint-disable-line no-unused-vars + }, + textAlign: function(align) { + return align; + }, + xPlus: function(x, value) { + return x + value; + }, + leftForLtr: function(x, _itemWidth) { // eslint-disable-line no-unused-vars + return x; + }, + }; +}; + +var getAdapter = function(rtl, rectX, width) { + return rtl ? getRtlAdapter(rectX, width) : getLtrAdapter(); +}; + +var overrideTextDirection = function(ctx, direction) { + var style, original; + if (direction === 'ltr' || direction === 'rtl') { + style = ctx.canvas.style; + original = [ + style.getPropertyValue('direction'), + style.getPropertyPriority('direction'), + ]; + + style.setProperty('direction', direction, 'important'); + ctx.prevTextDirection = original; + } +}; + +var restoreTextDirection = function(ctx) { + var original = ctx.prevTextDirection; + if (original !== undefined) { + delete ctx.prevTextDirection; + ctx.canvas.style.setProperty('direction', original[0], original[1]); + } +}; + +var helpers_rtl = { + getRtlAdapter: getAdapter, + overrideTextDirection: overrideTextDirection, + restoreTextDirection: restoreTextDirection, +}; - // Chart event already has relative position in it - hoveredItem = me._getLegendItemAt(e.x, e.y); +var helpers$1 = helpers_core; +var easing = helpers_easing; +var canvas = helpers_canvas; +var options = helpers_options; +var math = helpers_math; +var rtl = helpers_rtl; +helpers$1.easing = easing; +helpers$1.canvas = canvas; +helpers$1.options = options; +helpers$1.math = math; +helpers$1.rtl = rtl; - if (type === 'click') { - if (hoveredItem && opts.onClick) { - // use e.native for backwards compatibility - opts.onClick.call(me, e.native, hoveredItem); - } - } else { - if (opts.onLeave && hoveredItem !== me._hoveredItem) { - if (me._hoveredItem) { - opts.onLeave.call(me, e.native, me._hoveredItem); - } - me._hoveredItem = hoveredItem; - } +function interpolate(start, view, model, ease) { + var keys = Object.keys(model); + var i, ilen, key, actual, origin, target, type, c0, c1; + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + + target = model[key]; + + // if a value is added to the model after pivot() has been called, the view + // doesn't contain it, so let's initialize the view to the target value. + if (!view.hasOwnProperty(key)) { + view[key] = target; + } + + actual = view[key]; + + if (actual === target || key[0] === '_') { + continue; + } + + if (!start.hasOwnProperty(key)) { + start[key] = actual; + } + + origin = start[key]; + + type = typeof target; + + if (type === typeof origin) { + if (type === 'string') { + c0 = chartjsColor(origin); + if (c0.valid) { + c1 = chartjsColor(target); + if (c1.valid) { + view[key] = c1.mix(c0, ease).rgbString(); + continue; + } + } + } else if (helpers$1.isFinite(origin) && helpers$1.isFinite(target)) { + view[key] = origin + (target - origin) * ease; + continue; + } + } + + view[key] = target; + } +} + +var Element = function(configuration) { + helpers$1.extend(this, configuration); + this.initialize.apply(this, arguments); +}; + +helpers$1.extend(Element.prototype, { + _type: undefined, + + initialize: function() { + this.hidden = false; + }, + + pivot: function() { + var me = this; + if (!me._view) { + me._view = helpers$1.extend({}, me._model); + } + me._start = {}; + return me; + }, + + transition: function(ease) { + var me = this; + var model = me._model; + var start = me._start; + var view = me._view; + + // No animation -> No Transition + if (!model || ease === 1) { + me._view = helpers$1.extend({}, model); + me._start = null; + return me; + } + + if (!view) { + view = me._view = {}; + } + + if (!start) { + start = me._start = {}; + } + + interpolate(start, view, model, ease); + + return me; + }, + + tooltipPosition: function() { + return { + x: this._model.x, + y: this._model.y + }; + }, + + hasValue: function() { + return helpers$1.isNumber(this._model.x) && helpers$1.isNumber(this._model.y); + } +}); + +Element.extend = helpers$1.inherits; + +var core_element = Element; - if (opts.onHover && hoveredItem) { - // use e.native for backwards compatibility - opts.onHover.call(me, e.native, hoveredItem); - } - } - } +var exports$3 = core_element.extend({ + chart: null, // the animation associated chart instance + currentStep: 0, // the current animation step + numSteps: 60, // default number of steps + easing: '', // the easing to use for this animation + render: null, // render function used by the animation service + + onAnimationProgress: null, // user specified callback to fire on each step of the animation + onAnimationComplete: null, // user specified callback to fire when the animation finishes +}); + +var core_animation = exports$3; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart.Animation instead + * @prop Chart.Animation#animationObject + * @deprecated since version 2.6.0 + * @todo remove at version 3 + */ +Object.defineProperty(exports$3.prototype, 'animationObject', { + get: function() { + return this; + } +}); + +/** + * Provided for backward compatibility, use Chart.Animation#chart instead + * @prop Chart.Animation#chartInstance + * @deprecated since version 2.6.0 + * @todo remove at version 3 + */ +Object.defineProperty(exports$3.prototype, 'chartInstance', { + get: function() { + return this.chart; + }, + set: function(value) { + this.chart = value; + } }); -function createNewLegendAndAttach(chart, legendOpts) { - var legend = new Legend({ - ctx: chart.ctx, - options: legendOpts, - chart: chart - }); - - core_layouts.configure(chart, legend, legendOpts); - core_layouts.addBox(chart, legend); - chart.legend = legend; -} +core_defaults._set('global', { + animation: { + duration: 1000, + easing: 'easeOutQuart', + onProgress: helpers$1.noop, + onComplete: helpers$1.noop + } +}); + +var core_animations = { + animations: [], + request: null, + + /** + * @param {Chart} chart - The chart to animate. + * @param {Chart.Animation} animation - The animation that we will animate. + * @param {number} duration - The animation duration in ms. + * @param {boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions + */ + addAnimation: function(chart, animation, duration, lazy) { + var animations = this.animations; + var i, ilen; + + animation.chart = chart; + animation.startTime = Date.now(); + animation.duration = duration; + + if (!lazy) { + chart.animating = true; + } + + for (i = 0, ilen = animations.length; i < ilen; ++i) { + if (animations[i].chart === chart) { + animations[i] = animation; + return; + } + } + + animations.push(animation); + + // If there are no animations queued, manually kickstart a digest, for lack of a better word + if (animations.length === 1) { + this.requestAnimationFrame(); + } + }, + + cancelAnimation: function(chart) { + var index = helpers$1.findIndex(this.animations, function(animation) { + return animation.chart === chart; + }); + + if (index !== -1) { + this.animations.splice(index, 1); + chart.animating = false; + } + }, + + requestAnimationFrame: function() { + var me = this; + if (me.request === null) { + // Skip animation frame requests until the active one is executed. + // This can happen when processing mouse events, e.g. 'mousemove' + // and 'mouseout' events will trigger multiple renders. + me.request = helpers$1.requestAnimFrame.call(window, function() { + me.request = null; + me.startDigest(); + }); + } + }, + + /** + * @private + */ + startDigest: function() { + var me = this; + + me.advance(); + + // Do we have more stuff to animate? + if (me.animations.length > 0) { + me.requestAnimationFrame(); + } + }, + + /** + * @private + */ + advance: function() { + var animations = this.animations; + var animation, chart, numSteps, nextStep; + var i = 0; + + // 1 animation per chart, so we are looping charts here + while (i < animations.length) { + animation = animations[i]; + chart = animation.chart; + numSteps = animation.numSteps; + + // Make sure that currentStep starts at 1 + // https://github.com/chartjs/Chart.js/issues/6104 + nextStep = Math.floor((Date.now() - animation.startTime) / animation.duration * numSteps) + 1; + animation.currentStep = Math.min(nextStep, numSteps); + + helpers$1.callback(animation.render, [chart, animation], chart); + helpers$1.callback(animation.onAnimationProgress, [animation], chart); + + if (animation.currentStep >= numSteps) { + helpers$1.callback(animation.onAnimationComplete, [animation], chart); + chart.animating = false; + animations.splice(i, 1); + } else { + ++i; + } + } + } +}; -var plugin_legend = { - id: 'legend', +var resolve = helpers$1.options.resolve; + +var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift']; + +/** + * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice', + * 'unshift') and notify the listener AFTER the array has been altered. Listeners are + * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments. + */ +function listenArrayEvents(array, listener) { + if (array._chartjs) { + array._chartjs.listeners.push(listener); + return; + } + + Object.defineProperty(array, '_chartjs', { + configurable: true, + enumerable: false, + value: { + listeners: [listener] + } + }); + + arrayEvents.forEach(function(key) { + var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1); + var base = array[key]; + + Object.defineProperty(array, key, { + configurable: true, + enumerable: false, + value: function() { + var args = Array.prototype.slice.call(arguments); + var res = base.apply(this, args); + + helpers$1.each(array._chartjs.listeners, function(object) { + if (typeof object[method] === 'function') { + object[method].apply(object, args); + } + }); + + return res; + } + }); + }); +} + +/** + * Removes the given array event listener and cleanup extra attached properties (such as + * the _chartjs stub and overridden methods) if array doesn't have any more listeners. + */ +function unlistenArrayEvents(array, listener) { + var stub = array._chartjs; + if (!stub) { + return; + } + + var listeners = stub.listeners; + var index = listeners.indexOf(listener); + if (index !== -1) { + listeners.splice(index, 1); + } + + if (listeners.length > 0) { + return; + } + + arrayEvents.forEach(function(key) { + delete array[key]; + }); + + delete array._chartjs; +} + +// Base class for all dataset controllers (line, bar, etc) +var DatasetController = function(chart, datasetIndex) { + this.initialize(chart, datasetIndex); +}; + +helpers$1.extend(DatasetController.prototype, { + + /** + * Element type used to generate a meta dataset (e.g. Chart.element.Line). + * @type {Chart.core.element} + */ + datasetElementType: null, + + /** + * Element type used to generate a meta data (e.g. Chart.element.Point). + * @type {Chart.core.element} + */ + dataElementType: null, + + /** + * Dataset element option keys to be resolved in _resolveDatasetElementOptions. + * A derived controller may override this to resolve controller-specific options. + * The keys defined here are for backward compatibility for legend styles. + * @private + */ + _datasetElementOptions: [ + 'backgroundColor', + 'borderCapStyle', + 'borderColor', + 'borderDash', + 'borderDashOffset', + 'borderJoinStyle', + 'borderWidth' + ], + + /** + * Data element option keys to be resolved in _resolveDataElementOptions. + * A derived controller may override this to resolve controller-specific options. + * The keys defined here are for backward compatibility for legend styles. + * @private + */ + _dataElementOptions: [ + 'backgroundColor', + 'borderColor', + 'borderWidth', + 'pointStyle' + ], + + initialize: function(chart, datasetIndex) { + var me = this; + me.chart = chart; + me.index = datasetIndex; + me.linkScales(); + me.addElements(); + me._type = me.getMeta().type; + }, + + updateIndex: function(datasetIndex) { + this.index = datasetIndex; + }, + + linkScales: function() { + var me = this; + var meta = me.getMeta(); + var chart = me.chart; + var scales = chart.scales; + var dataset = me.getDataset(); + var scalesOpts = chart.options.scales; + + if (meta.xAxisID === null || !(meta.xAxisID in scales) || dataset.xAxisID) { + meta.xAxisID = dataset.xAxisID || scalesOpts.xAxes[0].id; + } + if (meta.yAxisID === null || !(meta.yAxisID in scales) || dataset.yAxisID) { + meta.yAxisID = dataset.yAxisID || scalesOpts.yAxes[0].id; + } + }, + + getDataset: function() { + return this.chart.data.datasets[this.index]; + }, + + getMeta: function() { + return this.chart.getDatasetMeta(this.index); + }, + + getScaleForId: function(scaleID) { + return this.chart.scales[scaleID]; + }, + + /** + * @private + */ + _getValueScaleId: function() { + return this.getMeta().yAxisID; + }, + + /** + * @private + */ + _getIndexScaleId: function() { + return this.getMeta().xAxisID; + }, + + /** + * @private + */ + _getValueScale: function() { + return this.getScaleForId(this._getValueScaleId()); + }, + + /** + * @private + */ + _getIndexScale: function() { + return this.getScaleForId(this._getIndexScaleId()); + }, + + reset: function() { + this._update(true); + }, + + /** + * @private + */ + destroy: function() { + if (this._data) { + unlistenArrayEvents(this._data, this); + } + }, + + createMetaDataset: function() { + var me = this; + var type = me.datasetElementType; + return type && new type({ + _chart: me.chart, + _datasetIndex: me.index + }); + }, + + createMetaData: function(index) { + var me = this; + var type = me.dataElementType; + return type && new type({ + _chart: me.chart, + _datasetIndex: me.index, + _index: index + }); + }, + + addElements: function() { + var me = this; + var meta = me.getMeta(); + var data = me.getDataset().data || []; + var metaData = meta.data; + var i, ilen; + + for (i = 0, ilen = data.length; i < ilen; ++i) { + metaData[i] = metaData[i] || me.createMetaData(i); + } + + meta.dataset = meta.dataset || me.createMetaDataset(); + }, + + addElementAndReset: function(index) { + var element = this.createMetaData(index); + this.getMeta().data.splice(index, 0, element); + this.updateElement(element, index, true); + }, + + buildOrUpdateElements: function() { + var me = this; + var dataset = me.getDataset(); + var data = dataset.data || (dataset.data = []); + + // In order to correctly handle data addition/deletion animation (an thus simulate + // real-time charts), we need to monitor these data modifications and synchronize + // the internal meta data accordingly. + if (me._data !== data) { + if (me._data) { + // This case happens when the user replaced the data array instance. + unlistenArrayEvents(me._data, me); + } + + if (data && Object.isExtensible(data)) { + listenArrayEvents(data, me); + } + me._data = data; + } + + // Re-sync meta data in case the user replaced the data array or if we missed + // any updates and so make sure that we handle number of datapoints changing. + me.resyncElements(); + }, + + /** + * Returns the merged user-supplied and default dataset-level options + * @private + */ + _configure: function() { + var me = this; + me._config = helpers$1.merge(Object.create(null), [ + me.chart.options.datasets[me._type], + me.getDataset(), + ], { + merger: function(key, target, source) { + if (key !== '_meta' && key !== 'data') { + helpers$1._merger(key, target, source); + } + } + }); + }, + + _update: function(reset) { + var me = this; + me._configure(); + me._cachedDataOpts = null; + me.update(reset); + }, + + update: helpers$1.noop, + + transition: function(easingValue) { + var meta = this.getMeta(); + var elements = meta.data || []; + var ilen = elements.length; + var i = 0; + + for (; i < ilen; ++i) { + elements[i].transition(easingValue); + } + + if (meta.dataset) { + meta.dataset.transition(easingValue); + } + }, + + draw: function() { + var meta = this.getMeta(); + var elements = meta.data || []; + var ilen = elements.length; + var i = 0; + + if (meta.dataset) { + meta.dataset.draw(); + } + + for (; i < ilen; ++i) { + elements[i].draw(); + } + }, + + /** + * Returns a set of predefined style properties that should be used to represent the dataset + * or the data if the index is specified + * @param {number} index - data index + * @return {IStyleInterface} style object + */ + getStyle: function(index) { + var me = this; + var meta = me.getMeta(); + var dataset = meta.dataset; + var style; + + me._configure(); + if (dataset && index === undefined) { + style = me._resolveDatasetElementOptions(dataset || {}); + } else { + index = index || 0; + style = me._resolveDataElementOptions(meta.data[index] || {}, index); + } + + if (style.fill === false || style.fill === null) { + style.backgroundColor = style.borderColor; + } + + return style; + }, + + /** + * @private + */ + _resolveDatasetElementOptions: function(element, hover) { + var me = this; + var chart = me.chart; + var datasetOpts = me._config; + var custom = element.custom || {}; + var options = chart.options.elements[me.datasetElementType.prototype._type] || {}; + var elementOptions = me._datasetElementOptions; + var values = {}; + var i, ilen, key, readKey; + + // Scriptable options + var context = { + chart: chart, + dataset: me.getDataset(), + datasetIndex: me.index, + hover: hover + }; + + for (i = 0, ilen = elementOptions.length; i < ilen; ++i) { + key = elementOptions[i]; + readKey = hover ? 'hover' + key.charAt(0).toUpperCase() + key.slice(1) : key; + values[key] = resolve([ + custom[readKey], + datasetOpts[readKey], + options[readKey] + ], context); + } + + return values; + }, + + /** + * @private + */ + _resolveDataElementOptions: function(element, index) { + var me = this; + var custom = element && element.custom; + var cached = me._cachedDataOpts; + if (cached && !custom) { + return cached; + } + var chart = me.chart; + var datasetOpts = me._config; + var options = chart.options.elements[me.dataElementType.prototype._type] || {}; + var elementOptions = me._dataElementOptions; + var values = {}; + + // Scriptable options + var context = { + chart: chart, + dataIndex: index, + dataset: me.getDataset(), + datasetIndex: me.index + }; + + // `resolve` sets cacheable to `false` if any option is indexed or scripted + var info = {cacheable: !custom}; + + var keys, i, ilen, key; + + custom = custom || {}; + + if (helpers$1.isArray(elementOptions)) { + for (i = 0, ilen = elementOptions.length; i < ilen; ++i) { + key = elementOptions[i]; + values[key] = resolve([ + custom[key], + datasetOpts[key], + options[key] + ], context, index, info); + } + } else { + keys = Object.keys(elementOptions); + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve([ + custom[key], + datasetOpts[elementOptions[key]], + datasetOpts[key], + options[key] + ], context, index, info); + } + } + + if (info.cacheable) { + me._cachedDataOpts = Object.freeze(values); + } + + return values; + }, + + removeHoverStyle: function(element) { + helpers$1.merge(element._model, element.$previousStyle || {}); + delete element.$previousStyle; + }, + + setHoverStyle: function(element) { + var dataset = this.chart.data.datasets[element._datasetIndex]; + var index = element._index; + var custom = element.custom || {}; + var model = element._model; + var getHoverColor = helpers$1.getHoverColor; + + element.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth + }; + + model.backgroundColor = resolve([custom.hoverBackgroundColor, dataset.hoverBackgroundColor, getHoverColor(model.backgroundColor)], undefined, index); + model.borderColor = resolve([custom.hoverBorderColor, dataset.hoverBorderColor, getHoverColor(model.borderColor)], undefined, index); + model.borderWidth = resolve([custom.hoverBorderWidth, dataset.hoverBorderWidth, model.borderWidth], undefined, index); + }, + + /** + * @private + */ + _removeDatasetHoverStyle: function() { + var element = this.getMeta().dataset; + + if (element) { + this.removeHoverStyle(element); + } + }, + + /** + * @private + */ + _setDatasetHoverStyle: function() { + var element = this.getMeta().dataset; + var prev = {}; + var i, ilen, key, keys, hoverOptions, model; + + if (!element) { + return; + } + + model = element._model; + hoverOptions = this._resolveDatasetElementOptions(element, true); + + keys = Object.keys(hoverOptions); + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + prev[key] = model[key]; + model[key] = hoverOptions[key]; + } + + element.$previousStyle = prev; + }, + + /** + * @private + */ + resyncElements: function() { + var me = this; + var meta = me.getMeta(); + var data = me.getDataset().data; + var numMeta = meta.data.length; + var numData = data.length; + + if (numData < numMeta) { + meta.data.splice(numData, numMeta - numData); + } else if (numData > numMeta) { + me.insertElements(numMeta, numData - numMeta); + } + }, + + /** + * @private + */ + insertElements: function(start, count) { + for (var i = 0; i < count; ++i) { + this.addElementAndReset(start + i); + } + }, + + /** + * @private + */ + onDataPush: function() { + var count = arguments.length; + this.insertElements(this.getDataset().data.length - count, count); + }, + + /** + * @private + */ + onDataPop: function() { + this.getMeta().data.pop(); + }, + + /** + * @private + */ + onDataShift: function() { + this.getMeta().data.shift(); + }, + + /** + * @private + */ + onDataSplice: function(start, count) { + this.getMeta().data.splice(start, count); + this.insertElements(start, arguments.length - 2); + }, + + /** + * @private + */ + onDataUnshift: function() { + this.insertElements(0, arguments.length); + } +}); + +DatasetController.extend = helpers$1.inherits; + +var core_datasetController = DatasetController; - /** - * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making - * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of - * the plugin, which one will be re-exposed in the chart.js file. - * https://github.com/chartjs/Chart.js/pull/2640 - * @private - */ - _element: Legend, +var TAU = Math.PI * 2; + +core_defaults._set('global', { + elements: { + arc: { + backgroundColor: core_defaults.global.defaultColor, + borderColor: '#fff', + borderWidth: 2, + borderAlign: 'center' + } + } +}); + +function clipArc(ctx, arc) { + var startAngle = arc.startAngle; + var endAngle = arc.endAngle; + var pixelMargin = arc.pixelMargin; + var angleMargin = pixelMargin / arc.outerRadius; + var x = arc.x; + var y = arc.y; + + // Draw an inner border by cliping the arc and drawing a double-width border + // Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders + ctx.beginPath(); + ctx.arc(x, y, arc.outerRadius, startAngle - angleMargin, endAngle + angleMargin); + if (arc.innerRadius > pixelMargin) { + angleMargin = pixelMargin / arc.innerRadius; + ctx.arc(x, y, arc.innerRadius - pixelMargin, endAngle + angleMargin, startAngle - angleMargin, true); + } else { + ctx.arc(x, y, pixelMargin, endAngle + Math.PI / 2, startAngle - Math.PI / 2); + } + ctx.closePath(); + ctx.clip(); +} + +function drawFullCircleBorders(ctx, vm, arc, inner) { + var endAngle = arc.endAngle; + var i; + + if (inner) { + arc.endAngle = arc.startAngle + TAU; + clipArc(ctx, arc); + arc.endAngle = endAngle; + if (arc.endAngle === arc.startAngle && arc.fullCircles) { + arc.endAngle += TAU; + arc.fullCircles--; + } + } + + ctx.beginPath(); + ctx.arc(arc.x, arc.y, arc.innerRadius, arc.startAngle + TAU, arc.startAngle, true); + for (i = 0; i < arc.fullCircles; ++i) { + ctx.stroke(); + } + + ctx.beginPath(); + ctx.arc(arc.x, arc.y, vm.outerRadius, arc.startAngle, arc.startAngle + TAU); + for (i = 0; i < arc.fullCircles; ++i) { + ctx.stroke(); + } +} + +function drawBorder(ctx, vm, arc) { + var inner = vm.borderAlign === 'inner'; + + if (inner) { + ctx.lineWidth = vm.borderWidth * 2; + ctx.lineJoin = 'round'; + } else { + ctx.lineWidth = vm.borderWidth; + ctx.lineJoin = 'bevel'; + } + + if (arc.fullCircles) { + drawFullCircleBorders(ctx, vm, arc, inner); + } + + if (inner) { + clipArc(ctx, arc); + } + + ctx.beginPath(); + ctx.arc(arc.x, arc.y, vm.outerRadius, arc.startAngle, arc.endAngle); + ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true); + ctx.closePath(); + ctx.stroke(); +} + +var element_arc = core_element.extend({ + _type: 'arc', + + inLabelRange: function(mouseX) { + var vm = this._view; + + if (vm) { + return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2)); + } + return false; + }, + + inRange: function(chartX, chartY) { + var vm = this._view; + + if (vm) { + var pointRelativePosition = helpers$1.getAngleFromPoint(vm, {x: chartX, y: chartY}); + var angle = pointRelativePosition.angle; + var distance = pointRelativePosition.distance; + + // Sanitise angle range + var startAngle = vm.startAngle; + var endAngle = vm.endAngle; + while (endAngle < startAngle) { + endAngle += TAU; + } + while (angle > endAngle) { + angle -= TAU; + } + while (angle < startAngle) { + angle += TAU; + } + + // Check if within the range of the open/close angle + var betweenAngles = (angle >= startAngle && angle <= endAngle); + var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius); + + return (betweenAngles && withinRadius); + } + return false; + }, + + getCenterPoint: function() { + var vm = this._view; + var halfAngle = (vm.startAngle + vm.endAngle) / 2; + var halfRadius = (vm.innerRadius + vm.outerRadius) / 2; + return { + x: vm.x + Math.cos(halfAngle) * halfRadius, + y: vm.y + Math.sin(halfAngle) * halfRadius + }; + }, + + getArea: function() { + var vm = this._view; + return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2)); + }, + + tooltipPosition: function() { + var vm = this._view; + var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2); + var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius; + + return { + x: vm.x + (Math.cos(centreAngle) * rangeFromCentre), + y: vm.y + (Math.sin(centreAngle) * rangeFromCentre) + }; + }, + + draw: function() { + var ctx = this._chart.ctx; + var vm = this._view; + var pixelMargin = (vm.borderAlign === 'inner') ? 0.33 : 0; + var arc = { + x: vm.x, + y: vm.y, + innerRadius: vm.innerRadius, + outerRadius: Math.max(vm.outerRadius - pixelMargin, 0), + pixelMargin: pixelMargin, + startAngle: vm.startAngle, + endAngle: vm.endAngle, + fullCircles: Math.floor(vm.circumference / TAU) + }; + var i; + + ctx.save(); + + ctx.fillStyle = vm.backgroundColor; + ctx.strokeStyle = vm.borderColor; + + if (arc.fullCircles) { + arc.endAngle = arc.startAngle + TAU; + ctx.beginPath(); + ctx.arc(arc.x, arc.y, arc.outerRadius, arc.startAngle, arc.endAngle); + ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true); + ctx.closePath(); + for (i = 0; i < arc.fullCircles; ++i) { + ctx.fill(); + } + arc.endAngle = arc.startAngle + vm.circumference % TAU; + } + + ctx.beginPath(); + ctx.arc(arc.x, arc.y, arc.outerRadius, arc.startAngle, arc.endAngle); + ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true); + ctx.closePath(); + ctx.fill(); + + if (vm.borderWidth) { + drawBorder(ctx, vm, arc); + } + + ctx.restore(); + } +}); - beforeInit: function(chart) { - var legendOpts = chart.options.legend; +var valueOrDefault$1 = helpers$1.valueOrDefault; + +var defaultColor = core_defaults.global.defaultColor; + +core_defaults._set('global', { + elements: { + line: { + tension: 0.4, + backgroundColor: defaultColor, + borderWidth: 3, + borderColor: defaultColor, + borderCapStyle: 'butt', + borderDash: [], + borderDashOffset: 0.0, + borderJoinStyle: 'miter', + capBezierPoints: true, + fill: true, // do we fill in the area between the line and its base axis + } + } +}); + +var element_line = core_element.extend({ + _type: 'line', + + draw: function() { + var me = this; + var vm = me._view; + var ctx = me._chart.ctx; + var spanGaps = vm.spanGaps; + var points = me._children.slice(); // clone array + var globalDefaults = core_defaults.global; + var globalOptionLineElements = globalDefaults.elements.line; + var lastDrawnIndex = -1; + var closePath = me._loop; + var index, previous, currentVM; + + if (!points.length) { + return; + } + + if (me._loop) { + for (index = 0; index < points.length; ++index) { + previous = helpers$1.previousItem(points, index); + // If the line has an open path, shift the point array + if (!points[index]._view.skip && previous._view.skip) { + points = points.slice(index).concat(points.slice(0, index)); + closePath = spanGaps; + break; + } + } + // If the line has a close path, add the first point again + if (closePath) { + points.push(points[0]); + } + } + + ctx.save(); + + // Stroke Line Options + ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle; + + // IE 9 and 10 do not support line dash + if (ctx.setLineDash) { + ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash); + } + + ctx.lineDashOffset = valueOrDefault$1(vm.borderDashOffset, globalOptionLineElements.borderDashOffset); + ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle; + ctx.lineWidth = valueOrDefault$1(vm.borderWidth, globalOptionLineElements.borderWidth); + ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor; + + // Stroke Line + ctx.beginPath(); + + // First point moves to it's starting position no matter what + currentVM = points[0]._view; + if (!currentVM.skip) { + ctx.moveTo(currentVM.x, currentVM.y); + lastDrawnIndex = 0; + } + + for (index = 1; index < points.length; ++index) { + currentVM = points[index]._view; + previous = lastDrawnIndex === -1 ? helpers$1.previousItem(points, index) : points[lastDrawnIndex]; + + if (!currentVM.skip) { + if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) { + // There was a gap and this is the first point after the gap + ctx.moveTo(currentVM.x, currentVM.y); + } else { + // Line to next point + helpers$1.canvas.lineTo(ctx, previous._view, currentVM); + } + lastDrawnIndex = index; + } + } + + if (closePath) { + ctx.closePath(); + } + + ctx.stroke(); + ctx.restore(); + } +}); - if (legendOpts) { - createNewLegendAndAttach(chart, legendOpts); - } - }, +var valueOrDefault$2 = helpers$1.valueOrDefault; + +var defaultColor$1 = core_defaults.global.defaultColor; + +core_defaults._set('global', { + elements: { + point: { + radius: 3, + pointStyle: 'circle', + backgroundColor: defaultColor$1, + borderColor: defaultColor$1, + borderWidth: 1, + // Hover + hitRadius: 1, + hoverRadius: 4, + hoverBorderWidth: 1 + } + } +}); + +function xRange(mouseX) { + var vm = this._view; + return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false; +} + +function yRange(mouseY) { + var vm = this._view; + return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false; +} + +var element_point = core_element.extend({ + _type: 'point', + + inRange: function(mouseX, mouseY) { + var vm = this._view; + return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false; + }, + + inLabelRange: xRange, + inXRange: xRange, + inYRange: yRange, + + getCenterPoint: function() { + var vm = this._view; + return { + x: vm.x, + y: vm.y + }; + }, + + getArea: function() { + return Math.PI * Math.pow(this._view.radius, 2); + }, + + tooltipPosition: function() { + var vm = this._view; + return { + x: vm.x, + y: vm.y, + padding: vm.radius + vm.borderWidth + }; + }, + + draw: function(chartArea) { + var vm = this._view; + var ctx = this._chart.ctx; + var pointStyle = vm.pointStyle; + var rotation = vm.rotation; + var radius = vm.radius; + var x = vm.x; + var y = vm.y; + var globalDefaults = core_defaults.global; + var defaultColor = globalDefaults.defaultColor; // eslint-disable-line no-shadow + + if (vm.skip) { + return; + } + + // Clipping for Points. + if (chartArea === undefined || helpers$1.canvas._isPointInArea(vm, chartArea)) { + ctx.strokeStyle = vm.borderColor || defaultColor; + ctx.lineWidth = valueOrDefault$2(vm.borderWidth, globalDefaults.elements.point.borderWidth); + ctx.fillStyle = vm.backgroundColor || defaultColor; + helpers$1.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation); + } + } +}); - beforeUpdate: function(chart) { - var legendOpts = chart.options.legend; - var legend = chart.legend; +var defaultColor$2 = core_defaults.global.defaultColor; + +core_defaults._set('global', { + elements: { + rectangle: { + backgroundColor: defaultColor$2, + borderColor: defaultColor$2, + borderSkipped: 'bottom', + borderWidth: 0 + } + } +}); + +function isVertical(vm) { + return vm && vm.width !== undefined; +} + +/** + * Helper function to get the bounds of the bar regardless of the orientation + * @param bar {Chart.Element.Rectangle} the bar + * @return {Bounds} bounds of the bar + * @private + */ +function getBarBounds(vm) { + var x1, x2, y1, y2, half; + + if (isVertical(vm)) { + half = vm.width / 2; + x1 = vm.x - half; + x2 = vm.x + half; + y1 = Math.min(vm.y, vm.base); + y2 = Math.max(vm.y, vm.base); + } else { + half = vm.height / 2; + x1 = Math.min(vm.x, vm.base); + x2 = Math.max(vm.x, vm.base); + y1 = vm.y - half; + y2 = vm.y + half; + } + + return { + left: x1, + top: y1, + right: x2, + bottom: y2 + }; +} + +function swap(orig, v1, v2) { + return orig === v1 ? v2 : orig === v2 ? v1 : orig; +} + +function parseBorderSkipped(vm) { + var edge = vm.borderSkipped; + var res = {}; + + if (!edge) { + return res; + } + + if (vm.horizontal) { + if (vm.base > vm.x) { + edge = swap(edge, 'left', 'right'); + } + } else if (vm.base < vm.y) { + edge = swap(edge, 'bottom', 'top'); + } + + res[edge] = true; + return res; +} + +function parseBorderWidth(vm, maxW, maxH) { + var value = vm.borderWidth; + var skip = parseBorderSkipped(vm); + var t, r, b, l; + + if (helpers$1.isObject(value)) { + t = +value.top || 0; + r = +value.right || 0; + b = +value.bottom || 0; + l = +value.left || 0; + } else { + t = r = b = l = +value || 0; + } + + return { + t: skip.top || (t < 0) ? 0 : t > maxH ? maxH : t, + r: skip.right || (r < 0) ? 0 : r > maxW ? maxW : r, + b: skip.bottom || (b < 0) ? 0 : b > maxH ? maxH : b, + l: skip.left || (l < 0) ? 0 : l > maxW ? maxW : l + }; +} + +function boundingRects(vm) { + var bounds = getBarBounds(vm); + var width = bounds.right - bounds.left; + var height = bounds.bottom - bounds.top; + var border = parseBorderWidth(vm, width / 2, height / 2); + + return { + outer: { + x: bounds.left, + y: bounds.top, + w: width, + h: height + }, + inner: { + x: bounds.left + border.l, + y: bounds.top + border.t, + w: width - border.l - border.r, + h: height - border.t - border.b + } + }; +} + +function inRange(vm, x, y) { + var skipX = x === null; + var skipY = y === null; + var bounds = !vm || (skipX && skipY) ? false : getBarBounds(vm); + + return bounds + && (skipX || x >= bounds.left && x <= bounds.right) + && (skipY || y >= bounds.top && y <= bounds.bottom); +} + +var element_rectangle = core_element.extend({ + _type: 'rectangle', + + draw: function() { + var ctx = this._chart.ctx; + var vm = this._view; + var rects = boundingRects(vm); + var outer = rects.outer; + var inner = rects.inner; + + ctx.fillStyle = vm.backgroundColor; + ctx.fillRect(outer.x, outer.y, outer.w, outer.h); + + if (outer.w === inner.w && outer.h === inner.h) { + return; + } + + ctx.save(); + ctx.beginPath(); + ctx.rect(outer.x, outer.y, outer.w, outer.h); + ctx.clip(); + ctx.fillStyle = vm.borderColor; + ctx.rect(inner.x, inner.y, inner.w, inner.h); + ctx.fill('evenodd'); + ctx.restore(); + }, + + height: function() { + var vm = this._view; + return vm.base - vm.y; + }, + + inRange: function(mouseX, mouseY) { + return inRange(this._view, mouseX, mouseY); + }, + + inLabelRange: function(mouseX, mouseY) { + var vm = this._view; + return isVertical(vm) + ? inRange(vm, mouseX, null) + : inRange(vm, null, mouseY); + }, + + inXRange: function(mouseX) { + return inRange(this._view, mouseX, null); + }, + + inYRange: function(mouseY) { + return inRange(this._view, null, mouseY); + }, + + getCenterPoint: function() { + var vm = this._view; + var x, y; + if (isVertical(vm)) { + x = vm.x; + y = (vm.y + vm.base) / 2; + } else { + x = (vm.x + vm.base) / 2; + y = vm.y; + } + + return {x: x, y: y}; + }, + + getArea: function() { + var vm = this._view; + + return isVertical(vm) + ? vm.width * Math.abs(vm.y - vm.base) + : vm.height * Math.abs(vm.x - vm.base); + }, + + tooltipPosition: function() { + var vm = this._view; + return { + x: vm.x, + y: vm.y + }; + } +}); - if (legendOpts) { - helpers$1.mergeIf(legendOpts, core_defaults.global.legend); +var elements = {}; +var Arc = element_arc; +var Line = element_line; +var Point = element_point; +var Rectangle = element_rectangle; +elements.Arc = Arc; +elements.Line = Line; +elements.Point = Point; +elements.Rectangle = Rectangle; - if (legend) { - core_layouts.configure(chart, legend, legendOpts); - legend.options = legendOpts; - } else { - createNewLegendAndAttach(chart, legendOpts); - } - } else if (legend) { - core_layouts.removeBox(chart, legend); - delete chart.legend; - } - }, +var deprecated = helpers$1._deprecated; +var valueOrDefault$3 = helpers$1.valueOrDefault; + +core_defaults._set('bar', { + hover: { + mode: 'label' + }, + + scales: { + xAxes: [{ + type: 'category', + offset: true, + gridLines: { + offsetGridLines: true + } + }], + + yAxes: [{ + type: 'linear' + }] + } +}); + +core_defaults._set('global', { + datasets: { + bar: { + categoryPercentage: 0.8, + barPercentage: 0.9 + } + } +}); + +/** + * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap. + * @private + */ +function computeMinSampleSize(scale, pixels) { + var min = scale._length; + var prev, curr, i, ilen; + + for (i = 1, ilen = pixels.length; i < ilen; ++i) { + min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1])); + } + + for (i = 0, ilen = scale.getTicks().length; i < ilen; ++i) { + curr = scale.getPixelForTick(i); + min = i > 0 ? Math.min(min, Math.abs(curr - prev)) : min; + prev = curr; + } + + return min; +} + +/** + * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null, + * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This + * mode currently always generates bars equally sized (until we introduce scriptable options?). + * @private + */ +function computeFitCategoryTraits(index, ruler, options) { + var thickness = options.barThickness; + var count = ruler.stackCount; + var curr = ruler.pixels[index]; + var min = helpers$1.isNullOrUndef(thickness) + ? computeMinSampleSize(ruler.scale, ruler.pixels) + : -1; + var size, ratio; + + if (helpers$1.isNullOrUndef(thickness)) { + size = min * options.categoryPercentage; + ratio = options.barPercentage; + } else { + // When bar thickness is enforced, category and bar percentages are ignored. + // Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%') + // and deprecate barPercentage since this value is ignored when thickness is absolute. + size = thickness * count; + ratio = 1; + } + + return { + chunk: size / count, + ratio: ratio, + start: curr - (size / 2) + }; +} + +/** + * Computes an "optimal" category that globally arranges bars side by side (no gap when + * percentage options are 1), based on the previous and following categories. This mode + * generates bars with different widths when data are not evenly spaced. + * @private + */ +function computeFlexCategoryTraits(index, ruler, options) { + var pixels = ruler.pixels; + var curr = pixels[index]; + var prev = index > 0 ? pixels[index - 1] : null; + var next = index < pixels.length - 1 ? pixels[index + 1] : null; + var percent = options.categoryPercentage; + var start, size; + + if (prev === null) { + // first data: its size is double based on the next point or, + // if it's also the last data, we use the scale size. + prev = curr - (next === null ? ruler.end - ruler.start : next - curr); + } + + if (next === null) { + // last data: its size is also double based on the previous point. + next = curr + curr - prev; + } + + start = curr - (curr - Math.min(prev, next)) / 2 * percent; + size = Math.abs(next - prev) / 2 * percent; + + return { + chunk: size / ruler.stackCount, + ratio: options.barPercentage, + start: start + }; +} + +var controller_bar = core_datasetController.extend({ + + dataElementType: elements.Rectangle, + + /** + * @private + */ + _dataElementOptions: [ + 'backgroundColor', + 'borderColor', + 'borderSkipped', + 'borderWidth', + 'barPercentage', + 'barThickness', + 'categoryPercentage', + 'maxBarThickness', + 'minBarLength' + ], + + initialize: function() { + var me = this; + var meta, scaleOpts; + + core_datasetController.prototype.initialize.apply(me, arguments); + + meta = me.getMeta(); + meta.stack = me.getDataset().stack; + meta.bar = true; + + scaleOpts = me._getIndexScale().options; + deprecated('bar chart', scaleOpts.barPercentage, 'scales.[x/y]Axes.barPercentage', 'dataset.barPercentage'); + deprecated('bar chart', scaleOpts.barThickness, 'scales.[x/y]Axes.barThickness', 'dataset.barThickness'); + deprecated('bar chart', scaleOpts.categoryPercentage, 'scales.[x/y]Axes.categoryPercentage', 'dataset.categoryPercentage'); + deprecated('bar chart', me._getValueScale().options.minBarLength, 'scales.[x/y]Axes.minBarLength', 'dataset.minBarLength'); + deprecated('bar chart', scaleOpts.maxBarThickness, 'scales.[x/y]Axes.maxBarThickness', 'dataset.maxBarThickness'); + }, + + update: function(reset) { + var me = this; + var rects = me.getMeta().data; + var i, ilen; + + me._ruler = me.getRuler(); + + for (i = 0, ilen = rects.length; i < ilen; ++i) { + me.updateElement(rects[i], i, reset); + } + }, + + updateElement: function(rectangle, index, reset) { + var me = this; + var meta = me.getMeta(); + var dataset = me.getDataset(); + var options = me._resolveDataElementOptions(rectangle, index); + + rectangle._xScale = me.getScaleForId(meta.xAxisID); + rectangle._yScale = me.getScaleForId(meta.yAxisID); + rectangle._datasetIndex = me.index; + rectangle._index = index; + rectangle._model = { + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderSkipped: options.borderSkipped, + borderWidth: options.borderWidth, + datasetLabel: dataset.label, + label: me.chart.data.labels[index] + }; + + if (helpers$1.isArray(dataset.data[index])) { + rectangle._model.borderSkipped = null; + } + + me._updateElementGeometry(rectangle, index, reset, options); + + rectangle.pivot(); + }, + + /** + * @private + */ + _updateElementGeometry: function(rectangle, index, reset, options) { + var me = this; + var model = rectangle._model; + var vscale = me._getValueScale(); + var base = vscale.getBasePixel(); + var horizontal = vscale.isHorizontal(); + var ruler = me._ruler || me.getRuler(); + var vpixels = me.calculateBarValuePixels(me.index, index, options); + var ipixels = me.calculateBarIndexPixels(me.index, index, ruler, options); + + model.horizontal = horizontal; + model.base = reset ? base : vpixels.base; + model.x = horizontal ? reset ? base : vpixels.head : ipixels.center; + model.y = horizontal ? ipixels.center : reset ? base : vpixels.head; + model.height = horizontal ? ipixels.size : undefined; + model.width = horizontal ? undefined : ipixels.size; + }, + + /** + * Returns the stacks based on groups and bar visibility. + * @param {number} [last] - The dataset index + * @returns {string[]} The list of stack IDs + * @private + */ + _getStacks: function(last) { + var me = this; + var scale = me._getIndexScale(); + var metasets = scale._getMatchingVisibleMetas(me._type); + var stacked = scale.options.stacked; + var ilen = metasets.length; + var stacks = []; + var i, meta; + + for (i = 0; i < ilen; ++i) { + meta = metasets[i]; + // stacked | meta.stack + // | found | not found | undefined + // false | x | x | x + // true | | x | + // undefined | | x | x + if (stacked === false || stacks.indexOf(meta.stack) === -1 || + (stacked === undefined && meta.stack === undefined)) { + stacks.push(meta.stack); + } + if (meta.index === last) { + break; + } + } + + return stacks; + }, + + /** + * Returns the effective number of stacks based on groups and bar visibility. + * @private + */ + getStackCount: function() { + return this._getStacks().length; + }, + + /** + * Returns the stack index for the given dataset based on groups and bar visibility. + * @param {number} [datasetIndex] - The dataset index + * @param {string} [name] - The stack name to find + * @returns {number} The stack index + * @private + */ + getStackIndex: function(datasetIndex, name) { + var stacks = this._getStacks(datasetIndex); + var index = (name !== undefined) + ? stacks.indexOf(name) + : -1; // indexOf returns -1 if element is not present + + return (index === -1) + ? stacks.length - 1 + : index; + }, + + /** + * @private + */ + getRuler: function() { + var me = this; + var scale = me._getIndexScale(); + var pixels = []; + var i, ilen; + + for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) { + pixels.push(scale.getPixelForValue(null, i, me.index)); + } + + return { + pixels: pixels, + start: scale._startPixel, + end: scale._endPixel, + stackCount: me.getStackCount(), + scale: scale + }; + }, + + /** + * Note: pixel values are not clamped to the scale area. + * @private + */ + calculateBarValuePixels: function(datasetIndex, index, options) { + var me = this; + var chart = me.chart; + var scale = me._getValueScale(); + var isHorizontal = scale.isHorizontal(); + var datasets = chart.data.datasets; + var metasets = scale._getMatchingVisibleMetas(me._type); + var value = scale._parseValue(datasets[datasetIndex].data[index]); + var minBarLength = options.minBarLength; + var stacked = scale.options.stacked; + var stack = me.getMeta().stack; + var start = value.start === undefined ? 0 : value.max >= 0 && value.min >= 0 ? value.min : value.max; + var length = value.start === undefined ? value.end : value.max >= 0 && value.min >= 0 ? value.max - value.min : value.min - value.max; + var ilen = metasets.length; + var i, imeta, ivalue, base, head, size, stackLength; + + if (stacked || (stacked === undefined && stack !== undefined)) { + for (i = 0; i < ilen; ++i) { + imeta = metasets[i]; + + if (imeta.index === datasetIndex) { + break; + } + + if (imeta.stack === stack) { + stackLength = scale._parseValue(datasets[imeta.index].data[index]); + ivalue = stackLength.start === undefined ? stackLength.end : stackLength.min >= 0 && stackLength.max >= 0 ? stackLength.max : stackLength.min; + + if ((value.min < 0 && ivalue < 0) || (value.max >= 0 && ivalue > 0)) { + start += ivalue; + } + } + } + } + + base = scale.getPixelForValue(start); + head = scale.getPixelForValue(start + length); + size = head - base; + + if (minBarLength !== undefined && Math.abs(size) < minBarLength) { + size = minBarLength; + if (length >= 0 && !isHorizontal || length < 0 && isHorizontal) { + head = base - minBarLength; + } else { + head = base + minBarLength; + } + } + + return { + size: size, + base: base, + head: head, + center: head + size / 2 + }; + }, + + /** + * @private + */ + calculateBarIndexPixels: function(datasetIndex, index, ruler, options) { + var me = this; + var range = options.barThickness === 'flex' + ? computeFlexCategoryTraits(index, ruler, options) + : computeFitCategoryTraits(index, ruler, options); + + var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack); + var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2); + var size = Math.min( + valueOrDefault$3(options.maxBarThickness, Infinity), + range.chunk * range.ratio); + + return { + base: center - size / 2, + head: center + size / 2, + center: center, + size: size + }; + }, + + draw: function() { + var me = this; + var chart = me.chart; + var scale = me._getValueScale(); + var rects = me.getMeta().data; + var dataset = me.getDataset(); + var ilen = rects.length; + var i = 0; + + helpers$1.canvas.clipArea(chart.ctx, chart.chartArea); + + for (; i < ilen; ++i) { + var val = scale._parseValue(dataset.data[i]); + if (!isNaN(val.min) && !isNaN(val.max)) { + rects[i].draw(); + } + } + + helpers$1.canvas.unclipArea(chart.ctx); + }, + + /** + * @private + */ + _resolveDataElementOptions: function() { + var me = this; + var values = helpers$1.extend({}, core_datasetController.prototype._resolveDataElementOptions.apply(me, arguments)); + var indexOpts = me._getIndexScale().options; + var valueOpts = me._getValueScale().options; + + values.barPercentage = valueOrDefault$3(indexOpts.barPercentage, values.barPercentage); + values.barThickness = valueOrDefault$3(indexOpts.barThickness, values.barThickness); + values.categoryPercentage = valueOrDefault$3(indexOpts.categoryPercentage, values.categoryPercentage); + values.maxBarThickness = valueOrDefault$3(indexOpts.maxBarThickness, values.maxBarThickness); + values.minBarLength = valueOrDefault$3(valueOpts.minBarLength, values.minBarLength); + + return values; + } + +}); - afterEvent: function(chart, e) { - var legend = chart.legend; - if (legend) { - legend.handleEvent(e); - } - } -}; +var valueOrDefault$4 = helpers$1.valueOrDefault; +var resolve$1 = helpers$1.options.resolve; + +core_defaults._set('bubble', { + hover: { + mode: 'single' + }, + + scales: { + xAxes: [{ + type: 'linear', // bubble should probably use a linear scale by default + position: 'bottom', + id: 'x-axis-0' // need an ID so datasets can reference the scale + }], + yAxes: [{ + type: 'linear', + position: 'left', + id: 'y-axis-0' + }] + }, + + tooltips: { + callbacks: { + title: function() { + // Title doesn't make sense for scatter since we format the data as a point + return ''; + }, + label: function(item, data) { + var datasetLabel = data.datasets[item.datasetIndex].label || ''; + var dataPoint = data.datasets[item.datasetIndex].data[item.index]; + return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')'; + } + } + } +}); + +var controller_bubble = core_datasetController.extend({ + /** + * @protected + */ + dataElementType: elements.Point, + + /** + * @private + */ + _dataElementOptions: [ + 'backgroundColor', + 'borderColor', + 'borderWidth', + 'hoverBackgroundColor', + 'hoverBorderColor', + 'hoverBorderWidth', + 'hoverRadius', + 'hitRadius', + 'pointStyle', + 'rotation' + ], + + /** + * @protected + */ + update: function(reset) { + var me = this; + var meta = me.getMeta(); + var points = meta.data; + + // Update Points + helpers$1.each(points, function(point, index) { + me.updateElement(point, index, reset); + }); + }, + + /** + * @protected + */ + updateElement: function(point, index, reset) { + var me = this; + var meta = me.getMeta(); + var custom = point.custom || {}; + var xScale = me.getScaleForId(meta.xAxisID); + var yScale = me.getScaleForId(meta.yAxisID); + var options = me._resolveDataElementOptions(point, index); + var data = me.getDataset().data[index]; + var dsIndex = me.index; + + var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex); + var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex); + + point._xScale = xScale; + point._yScale = yScale; + point._options = options; + point._datasetIndex = dsIndex; + point._index = index; + point._model = { + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + hitRadius: options.hitRadius, + pointStyle: options.pointStyle, + rotation: options.rotation, + radius: reset ? 0 : options.radius, + skip: custom.skip || isNaN(x) || isNaN(y), + x: x, + y: y, + }; + + point.pivot(); + }, + + /** + * @protected + */ + setHoverStyle: function(point) { + var model = point._model; + var options = point._options; + var getHoverColor = helpers$1.getHoverColor; + + point.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + radius: model.radius + }; + + model.backgroundColor = valueOrDefault$4(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault$4(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault$4(options.hoverBorderWidth, options.borderWidth); + model.radius = options.radius + options.hoverRadius; + }, + + /** + * @private + */ + _resolveDataElementOptions: function(point, index) { + var me = this; + var chart = me.chart; + var dataset = me.getDataset(); + var custom = point.custom || {}; + var data = dataset.data[index] || {}; + var values = core_datasetController.prototype._resolveDataElementOptions.apply(me, arguments); + + // Scriptable options + var context = { + chart: chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + // In case values were cached (and thus frozen), we need to clone the values + if (me._cachedDataOpts === values) { + values = helpers$1.extend({}, values); + } + + // Custom radius resolution + values.radius = resolve$1([ + custom.radius, + data.r, + me._config.radius, + chart.options.elements.point.radius + ], context, index); + + return values; + } +}); -var noop$2 = helpers$1.noop; - -core_defaults._set('global', { - title: { - display: false, - fontStyle: 'bold', - fullWidth: true, - padding: 10, - position: 'top', - text: '', - weight: 2000 // by default greater than legend (1000) to be above - } +var valueOrDefault$5 = helpers$1.valueOrDefault; + +var PI$1 = Math.PI; +var DOUBLE_PI$1 = PI$1 * 2; +var HALF_PI$1 = PI$1 / 2; + +core_defaults._set('doughnut', { + animation: { + // Boolean - Whether we animate the rotation of the Doughnut + animateRotate: true, + // Boolean - Whether we animate scaling the Doughnut from the centre + animateScale: false + }, + hover: { + mode: 'single' + }, + legendCallback: function(chart) { + var list = document.createElement('ul'); + var data = chart.data; + var datasets = data.datasets; + var labels = data.labels; + var i, ilen, listItem, listItemSpan; + + list.setAttribute('class', chart.id + '-legend'); + if (datasets.length) { + for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) { + listItem = list.appendChild(document.createElement('li')); + listItemSpan = listItem.appendChild(document.createElement('span')); + listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i]; + if (labels[i]) { + listItem.appendChild(document.createTextNode(labels[i])); + } + } + } + + return list.outerHTML; + }, + legend: { + labels: { + generateLabels: function(chart) { + var data = chart.data; + if (data.labels.length && data.datasets.length) { + return data.labels.map(function(label, i) { + var meta = chart.getDatasetMeta(0); + var style = meta.controller.getStyle(i); + + return { + text: label, + fillStyle: style.backgroundColor, + strokeStyle: style.borderColor, + lineWidth: style.borderWidth, + hidden: isNaN(data.datasets[0].data[i]) || meta.data[i].hidden, + + // Extra data used for toggling the correct item + index: i + }; + }); + } + return []; + } + }, + + onClick: function(e, legendItem) { + var index = legendItem.index; + var chart = this.chart; + var i, ilen, meta; + + for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { + meta = chart.getDatasetMeta(i); + // toggle visibility of index if exists + if (meta.data[index]) { + meta.data[index].hidden = !meta.data[index].hidden; + } + } + + chart.update(); + } + }, + + // The percentage of the chart that we cut out of the middle. + cutoutPercentage: 50, + + // The rotation of the chart, where the first data arc begins. + rotation: -HALF_PI$1, + + // The total circumference of the chart. + circumference: DOUBLE_PI$1, + + // Need to override these to give a nice default + tooltips: { + callbacks: { + title: function() { + return ''; + }, + label: function(tooltipItem, data) { + var dataLabel = data.labels[tooltipItem.index]; + var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index]; + + if (helpers$1.isArray(dataLabel)) { + // show value on first line of multiline label + // need to clone because we are changing the value + dataLabel = dataLabel.slice(); + dataLabel[0] += value; + } else { + dataLabel += value; + } + + return dataLabel; + } + } + } +}); + +var controller_doughnut = core_datasetController.extend({ + + dataElementType: elements.Arc, + + linkScales: helpers$1.noop, + + /** + * @private + */ + _dataElementOptions: [ + 'backgroundColor', + 'borderColor', + 'borderWidth', + 'borderAlign', + 'hoverBackgroundColor', + 'hoverBorderColor', + 'hoverBorderWidth', + ], + + // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly + getRingIndex: function(datasetIndex) { + var ringIndex = 0; + + for (var j = 0; j < datasetIndex; ++j) { + if (this.chart.isDatasetVisible(j)) { + ++ringIndex; + } + } + + return ringIndex; + }, + + update: function(reset) { + var me = this; + var chart = me.chart; + var chartArea = chart.chartArea; + var opts = chart.options; + var ratioX = 1; + var ratioY = 1; + var offsetX = 0; + var offsetY = 0; + var meta = me.getMeta(); + var arcs = meta.data; + var cutout = opts.cutoutPercentage / 100 || 0; + var circumference = opts.circumference; + var chartWeight = me._getRingWeight(me.index); + var maxWidth, maxHeight, i, ilen; + + // If the chart's circumference isn't a full circle, calculate size as a ratio of the width/height of the arc + if (circumference < DOUBLE_PI$1) { + var startAngle = opts.rotation % DOUBLE_PI$1; + startAngle += startAngle >= PI$1 ? -DOUBLE_PI$1 : startAngle < -PI$1 ? DOUBLE_PI$1 : 0; + var endAngle = startAngle + circumference; + var startX = Math.cos(startAngle); + var startY = Math.sin(startAngle); + var endX = Math.cos(endAngle); + var endY = Math.sin(endAngle); + var contains0 = (startAngle <= 0 && endAngle >= 0) || endAngle >= DOUBLE_PI$1; + var contains90 = (startAngle <= HALF_PI$1 && endAngle >= HALF_PI$1) || endAngle >= DOUBLE_PI$1 + HALF_PI$1; + var contains180 = startAngle === -PI$1 || endAngle >= PI$1; + var contains270 = (startAngle <= -HALF_PI$1 && endAngle >= -HALF_PI$1) || endAngle >= PI$1 + HALF_PI$1; + var minX = contains180 ? -1 : Math.min(startX, startX * cutout, endX, endX * cutout); + var minY = contains270 ? -1 : Math.min(startY, startY * cutout, endY, endY * cutout); + var maxX = contains0 ? 1 : Math.max(startX, startX * cutout, endX, endX * cutout); + var maxY = contains90 ? 1 : Math.max(startY, startY * cutout, endY, endY * cutout); + ratioX = (maxX - minX) / 2; + ratioY = (maxY - minY) / 2; + offsetX = -(maxX + minX) / 2; + offsetY = -(maxY + minY) / 2; + } + + for (i = 0, ilen = arcs.length; i < ilen; ++i) { + arcs[i]._options = me._resolveDataElementOptions(arcs[i], i); + } + + chart.borderWidth = me.getMaxBorderWidth(); + maxWidth = (chartArea.right - chartArea.left - chart.borderWidth) / ratioX; + maxHeight = (chartArea.bottom - chartArea.top - chart.borderWidth) / ratioY; + chart.outerRadius = Math.max(Math.min(maxWidth, maxHeight) / 2, 0); + chart.innerRadius = Math.max(chart.outerRadius * cutout, 0); + chart.radiusLength = (chart.outerRadius - chart.innerRadius) / (me._getVisibleDatasetWeightTotal() || 1); + chart.offsetX = offsetX * chart.outerRadius; + chart.offsetY = offsetY * chart.outerRadius; + + meta.total = me.calculateTotal(); + + me.outerRadius = chart.outerRadius - chart.radiusLength * me._getRingWeightOffset(me.index); + me.innerRadius = Math.max(me.outerRadius - chart.radiusLength * chartWeight, 0); + + for (i = 0, ilen = arcs.length; i < ilen; ++i) { + me.updateElement(arcs[i], i, reset); + } + }, + + updateElement: function(arc, index, reset) { + var me = this; + var chart = me.chart; + var chartArea = chart.chartArea; + var opts = chart.options; + var animationOpts = opts.animation; + var centerX = (chartArea.left + chartArea.right) / 2; + var centerY = (chartArea.top + chartArea.bottom) / 2; + var startAngle = opts.rotation; // non reset case handled later + var endAngle = opts.rotation; // non reset case handled later + var dataset = me.getDataset(); + var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / DOUBLE_PI$1); + var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius; + var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius; + var options = arc._options || {}; + + helpers$1.extend(arc, { + // Utility + _datasetIndex: me.index, + _index: index, + + // Desired view properties + _model: { + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + borderAlign: options.borderAlign, + x: centerX + chart.offsetX, + y: centerY + chart.offsetY, + startAngle: startAngle, + endAngle: endAngle, + circumference: circumference, + outerRadius: outerRadius, + innerRadius: innerRadius, + label: helpers$1.valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index]) + } + }); + + var model = arc._model; + + // Set correct angles if not resetting + if (!reset || !animationOpts.animateRotate) { + if (index === 0) { + model.startAngle = opts.rotation; + } else { + model.startAngle = me.getMeta().data[index - 1]._model.endAngle; + } + + model.endAngle = model.startAngle + model.circumference; + } + + arc.pivot(); + }, + + calculateTotal: function() { + var dataset = this.getDataset(); + var meta = this.getMeta(); + var total = 0; + var value; + + helpers$1.each(meta.data, function(element, index) { + value = dataset.data[index]; + if (!isNaN(value) && !element.hidden) { + total += Math.abs(value); + } + }); + + /* if (total === 0) { + total = NaN; + }*/ + + return total; + }, + + calculateCircumference: function(value) { + var total = this.getMeta().total; + if (total > 0 && !isNaN(value)) { + return DOUBLE_PI$1 * (Math.abs(value) / total); + } + return 0; + }, + + // gets the max border or hover width to properly scale pie charts + getMaxBorderWidth: function(arcs) { + var me = this; + var max = 0; + var chart = me.chart; + var i, ilen, meta, arc, controller, options, borderWidth, hoverWidth; + + if (!arcs) { + // Find the outmost visible dataset + for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) { + if (chart.isDatasetVisible(i)) { + meta = chart.getDatasetMeta(i); + arcs = meta.data; + if (i !== me.index) { + controller = meta.controller; + } + break; + } + } + } + + if (!arcs) { + return 0; + } + + for (i = 0, ilen = arcs.length; i < ilen; ++i) { + arc = arcs[i]; + if (controller) { + controller._configure(); + options = controller._resolveDataElementOptions(arc, i); + } else { + options = arc._options; + } + if (options.borderAlign !== 'inner') { + borderWidth = options.borderWidth; + hoverWidth = options.hoverBorderWidth; + + max = borderWidth > max ? borderWidth : max; + max = hoverWidth > max ? hoverWidth : max; + } + } + return max; + }, + + /** + * @protected + */ + setHoverStyle: function(arc) { + var model = arc._model; + var options = arc._options; + var getHoverColor = helpers$1.getHoverColor; + + arc.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + }; + + model.backgroundColor = valueOrDefault$5(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault$5(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault$5(options.hoverBorderWidth, options.borderWidth); + }, + + /** + * Get radius length offset of the dataset in relation to the visible datasets weights. This allows determining the inner and outer radius correctly + * @private + */ + _getRingWeightOffset: function(datasetIndex) { + var ringWeightOffset = 0; + + for (var i = 0; i < datasetIndex; ++i) { + if (this.chart.isDatasetVisible(i)) { + ringWeightOffset += this._getRingWeight(i); + } + } + + return ringWeightOffset; + }, + + /** + * @private + */ + _getRingWeight: function(dataSetIndex) { + return Math.max(valueOrDefault$5(this.chart.data.datasets[dataSetIndex].weight, 1), 0); + }, + + /** + * Returns the sum of all visibile data set weights. This value can be 0. + * @private + */ + _getVisibleDatasetWeightTotal: function() { + return this._getRingWeightOffset(this.chart.data.datasets.length); + } }); -/** - * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required! - */ -var Title = core_element.extend({ - initialize: function(config) { - var me = this; - helpers$1.extend(me, config); +core_defaults._set('horizontalBar', { + hover: { + mode: 'index', + axis: 'y' + }, + + scales: { + xAxes: [{ + type: 'linear', + position: 'bottom' + }], + + yAxes: [{ + type: 'category', + position: 'left', + offset: true, + gridLines: { + offsetGridLines: true + } + }] + }, + + elements: { + rectangle: { + borderSkipped: 'left' + } + }, + + tooltips: { + mode: 'index', + axis: 'y' + } +}); + +core_defaults._set('global', { + datasets: { + horizontalBar: { + categoryPercentage: 0.8, + barPercentage: 0.9 + } + } +}); + +var controller_horizontalBar = controller_bar.extend({ + /** + * @private + */ + _getValueScaleId: function() { + return this.getMeta().xAxisID; + }, + + /** + * @private + */ + _getIndexScaleId: function() { + return this.getMeta().yAxisID; + } +}); - // Contains hit boxes for each dataset (in dataset order) - me.legendHitBoxes = []; - }, +var valueOrDefault$6 = helpers$1.valueOrDefault; +var resolve$2 = helpers$1.options.resolve; +var isPointInArea = helpers$1.canvas._isPointInArea; + +core_defaults._set('line', { + showLines: true, + spanGaps: false, + + hover: { + mode: 'label' + }, + + scales: { + xAxes: [{ + type: 'category', + id: 'x-axis-0' + }], + yAxes: [{ + type: 'linear', + id: 'y-axis-0' + }] + } +}); + +function scaleClip(scale, halfBorderWidth) { + var tickOpts = scale && scale.options.ticks || {}; + var reverse = tickOpts.reverse; + var min = tickOpts.min === undefined ? halfBorderWidth : 0; + var max = tickOpts.max === undefined ? halfBorderWidth : 0; + return { + start: reverse ? max : min, + end: reverse ? min : max + }; +} + +function defaultClip(xScale, yScale, borderWidth) { + var halfBorderWidth = borderWidth / 2; + var x = scaleClip(xScale, halfBorderWidth); + var y = scaleClip(yScale, halfBorderWidth); + + return { + top: y.end, + right: x.end, + bottom: y.start, + left: x.start + }; +} + +function toClip(value) { + var t, r, b, l; + + if (helpers$1.isObject(value)) { + t = value.top; + r = value.right; + b = value.bottom; + l = value.left; + } else { + t = r = b = l = value; + } + + return { + top: t, + right: r, + bottom: b, + left: l + }; +} + + +var controller_line = core_datasetController.extend({ + + datasetElementType: elements.Line, + + dataElementType: elements.Point, + + /** + * @private + */ + _datasetElementOptions: [ + 'backgroundColor', + 'borderCapStyle', + 'borderColor', + 'borderDash', + 'borderDashOffset', + 'borderJoinStyle', + 'borderWidth', + 'cubicInterpolationMode', + 'fill' + ], + + /** + * @private + */ + _dataElementOptions: { + backgroundColor: 'pointBackgroundColor', + borderColor: 'pointBorderColor', + borderWidth: 'pointBorderWidth', + hitRadius: 'pointHitRadius', + hoverBackgroundColor: 'pointHoverBackgroundColor', + hoverBorderColor: 'pointHoverBorderColor', + hoverBorderWidth: 'pointHoverBorderWidth', + hoverRadius: 'pointHoverRadius', + pointStyle: 'pointStyle', + radius: 'pointRadius', + rotation: 'pointRotation' + }, + + update: function(reset) { + var me = this; + var meta = me.getMeta(); + var line = meta.dataset; + var points = meta.data || []; + var options = me.chart.options; + var config = me._config; + var showLine = me._showLine = valueOrDefault$6(config.showLine, options.showLines); + var i, ilen; + + me._xScale = me.getScaleForId(meta.xAxisID); + me._yScale = me.getScaleForId(meta.yAxisID); + + // Update Line + if (showLine) { + // Compatibility: If the properties are defined with only the old name, use those values + if (config.tension !== undefined && config.lineTension === undefined) { + config.lineTension = config.tension; + } + + // Utility + line._scale = me._yScale; + line._datasetIndex = me.index; + // Data + line._children = points; + // Model + line._model = me._resolveDatasetElementOptions(line); + + line.pivot(); + } + + // Update Points + for (i = 0, ilen = points.length; i < ilen; ++i) { + me.updateElement(points[i], i, reset); + } + + if (showLine && line._model.tension !== 0) { + me.updateBezierControlPoints(); + } + + // Now pivot the point for animation + for (i = 0, ilen = points.length; i < ilen; ++i) { + points[i].pivot(); + } + }, + + updateElement: function(point, index, reset) { + var me = this; + var meta = me.getMeta(); + var custom = point.custom || {}; + var dataset = me.getDataset(); + var datasetIndex = me.index; + var value = dataset.data[index]; + var xScale = me._xScale; + var yScale = me._yScale; + var lineModel = meta.dataset._model; + var x, y; + + var options = me._resolveDataElementOptions(point, index); + + x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex); + y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex); + + // Utility + point._xScale = xScale; + point._yScale = yScale; + point._options = options; + point._datasetIndex = datasetIndex; + point._index = index; + + // Desired view properties + point._model = { + x: x, + y: y, + skip: custom.skip || isNaN(x) || isNaN(y), + // Appearance + radius: options.radius, + pointStyle: options.pointStyle, + rotation: options.rotation, + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + tension: valueOrDefault$6(custom.tension, lineModel ? lineModel.tension : 0), + steppedLine: lineModel ? lineModel.steppedLine : false, + // Tooltip + hitRadius: options.hitRadius + }; + }, + + /** + * @private + */ + _resolveDatasetElementOptions: function(element) { + var me = this; + var config = me._config; + var custom = element.custom || {}; + var options = me.chart.options; + var lineOptions = options.elements.line; + var values = core_datasetController.prototype._resolveDatasetElementOptions.apply(me, arguments); + + // The default behavior of lines is to break at null values, according + // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158 + // This option gives lines the ability to span gaps + values.spanGaps = valueOrDefault$6(config.spanGaps, options.spanGaps); + values.tension = valueOrDefault$6(config.lineTension, lineOptions.tension); + values.steppedLine = resolve$2([custom.steppedLine, config.steppedLine, lineOptions.stepped]); + values.clip = toClip(valueOrDefault$6(config.clip, defaultClip(me._xScale, me._yScale, values.borderWidth))); + + return values; + }, + + calculatePointY: function(value, index, datasetIndex) { + var me = this; + var chart = me.chart; + var yScale = me._yScale; + var sumPos = 0; + var sumNeg = 0; + var i, ds, dsMeta, stackedRightValue, rightValue, metasets, ilen; + + if (yScale.options.stacked) { + rightValue = +yScale.getRightValue(value); + metasets = chart._getSortedVisibleDatasetMetas(); + ilen = metasets.length; + + for (i = 0; i < ilen; ++i) { + dsMeta = metasets[i]; + if (dsMeta.index === datasetIndex) { + break; + } + + ds = chart.data.datasets[dsMeta.index]; + if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id) { + stackedRightValue = +yScale.getRightValue(ds.data[index]); + if (stackedRightValue < 0) { + sumNeg += stackedRightValue || 0; + } else { + sumPos += stackedRightValue || 0; + } + } + } + + if (rightValue < 0) { + return yScale.getPixelForValue(sumNeg + rightValue); + } + return yScale.getPixelForValue(sumPos + rightValue); + } + return yScale.getPixelForValue(value); + }, + + updateBezierControlPoints: function() { + var me = this; + var chart = me.chart; + var meta = me.getMeta(); + var lineModel = meta.dataset._model; + var area = chart.chartArea; + var points = meta.data || []; + var i, ilen, model, controlPoints; + + // Only consider points that are drawn in case the spanGaps option is used + if (lineModel.spanGaps) { + points = points.filter(function(pt) { + return !pt._model.skip; + }); + } + + function capControlPoint(pt, min, max) { + return Math.max(Math.min(pt, max), min); + } + + if (lineModel.cubicInterpolationMode === 'monotone') { + helpers$1.splineCurveMonotone(points); + } else { + for (i = 0, ilen = points.length; i < ilen; ++i) { + model = points[i]._model; + controlPoints = helpers$1.splineCurve( + helpers$1.previousItem(points, i)._model, + model, + helpers$1.nextItem(points, i)._model, + lineModel.tension + ); + model.controlPointPreviousX = controlPoints.previous.x; + model.controlPointPreviousY = controlPoints.previous.y; + model.controlPointNextX = controlPoints.next.x; + model.controlPointNextY = controlPoints.next.y; + } + } + + if (chart.options.elements.line.capBezierPoints) { + for (i = 0, ilen = points.length; i < ilen; ++i) { + model = points[i]._model; + if (isPointInArea(model, area)) { + if (i > 0 && isPointInArea(points[i - 1]._model, area)) { + model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right); + model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom); + } + if (i < points.length - 1 && isPointInArea(points[i + 1]._model, area)) { + model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right); + model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom); + } + } + } + } + }, + + draw: function() { + var me = this; + var chart = me.chart; + var meta = me.getMeta(); + var points = meta.data || []; + var area = chart.chartArea; + var canvas = chart.canvas; + var i = 0; + var ilen = points.length; + var clip; + + if (me._showLine) { + clip = meta.dataset._model.clip; + + helpers$1.canvas.clipArea(chart.ctx, { + left: clip.left === false ? 0 : area.left - clip.left, + right: clip.right === false ? canvas.width : area.right + clip.right, + top: clip.top === false ? 0 : area.top - clip.top, + bottom: clip.bottom === false ? canvas.height : area.bottom + clip.bottom + }); + + meta.dataset.draw(); + + helpers$1.canvas.unclipArea(chart.ctx); + } + + // Draw the points + for (; i < ilen; ++i) { + points[i].draw(area); + } + }, + + /** + * @protected + */ + setHoverStyle: function(point) { + var model = point._model; + var options = point._options; + var getHoverColor = helpers$1.getHoverColor; + + point.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + radius: model.radius + }; + + model.backgroundColor = valueOrDefault$6(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault$6(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault$6(options.hoverBorderWidth, options.borderWidth); + model.radius = valueOrDefault$6(options.hoverRadius, options.radius); + }, +}); - // These methods are ordered by lifecycle. Utilities then follow. +var resolve$3 = helpers$1.options.resolve; + +core_defaults._set('polarArea', { + scale: { + type: 'radialLinear', + angleLines: { + display: false + }, + gridLines: { + circular: true + }, + pointLabels: { + display: false + }, + ticks: { + beginAtZero: true + } + }, + + // Boolean - Whether to animate the rotation of the chart + animation: { + animateRotate: true, + animateScale: true + }, + + startAngle: -0.5 * Math.PI, + legendCallback: function(chart) { + var list = document.createElement('ul'); + var data = chart.data; + var datasets = data.datasets; + var labels = data.labels; + var i, ilen, listItem, listItemSpan; + + list.setAttribute('class', chart.id + '-legend'); + if (datasets.length) { + for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) { + listItem = list.appendChild(document.createElement('li')); + listItemSpan = listItem.appendChild(document.createElement('span')); + listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i]; + if (labels[i]) { + listItem.appendChild(document.createTextNode(labels[i])); + } + } + } + + return list.outerHTML; + }, + legend: { + labels: { + generateLabels: function(chart) { + var data = chart.data; + if (data.labels.length && data.datasets.length) { + return data.labels.map(function(label, i) { + var meta = chart.getDatasetMeta(0); + var style = meta.controller.getStyle(i); + + return { + text: label, + fillStyle: style.backgroundColor, + strokeStyle: style.borderColor, + lineWidth: style.borderWidth, + hidden: isNaN(data.datasets[0].data[i]) || meta.data[i].hidden, + + // Extra data used for toggling the correct item + index: i + }; + }); + } + return []; + } + }, + + onClick: function(e, legendItem) { + var index = legendItem.index; + var chart = this.chart; + var i, ilen, meta; + + for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { + meta = chart.getDatasetMeta(i); + meta.data[index].hidden = !meta.data[index].hidden; + } + + chart.update(); + } + }, + + // Need to override these to give a nice default + tooltips: { + callbacks: { + title: function() { + return ''; + }, + label: function(item, data) { + return data.labels[item.index] + ': ' + item.yLabel; + } + } + } +}); + +var controller_polarArea = core_datasetController.extend({ + + dataElementType: elements.Arc, + + linkScales: helpers$1.noop, + + /** + * @private + */ + _dataElementOptions: [ + 'backgroundColor', + 'borderColor', + 'borderWidth', + 'borderAlign', + 'hoverBackgroundColor', + 'hoverBorderColor', + 'hoverBorderWidth', + ], + + /** + * @private + */ + _getIndexScaleId: function() { + return this.chart.scale.id; + }, + + /** + * @private + */ + _getValueScaleId: function() { + return this.chart.scale.id; + }, + + update: function(reset) { + var me = this; + var dataset = me.getDataset(); + var meta = me.getMeta(); + var start = me.chart.options.startAngle || 0; + var starts = me._starts = []; + var angles = me._angles = []; + var arcs = meta.data; + var i, ilen, angle; + + me._updateRadius(); + + meta.count = me.countVisibleElements(); + + for (i = 0, ilen = dataset.data.length; i < ilen; i++) { + starts[i] = start; + angle = me._computeAngle(i); + angles[i] = angle; + start += angle; + } + + for (i = 0, ilen = arcs.length; i < ilen; ++i) { + arcs[i]._options = me._resolveDataElementOptions(arcs[i], i); + me.updateElement(arcs[i], i, reset); + } + }, + + /** + * @private + */ + _updateRadius: function() { + var me = this; + var chart = me.chart; + var chartArea = chart.chartArea; + var opts = chart.options; + var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top); + + chart.outerRadius = Math.max(minSize / 2, 0); + chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0); + chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount(); + + me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index); + me.innerRadius = me.outerRadius - chart.radiusLength; + }, + + updateElement: function(arc, index, reset) { + var me = this; + var chart = me.chart; + var dataset = me.getDataset(); + var opts = chart.options; + var animationOpts = opts.animation; + var scale = chart.scale; + var labels = chart.data.labels; + + var centerX = scale.xCenter; + var centerY = scale.yCenter; + + // var negHalfPI = -0.5 * Math.PI; + var datasetStartAngle = opts.startAngle; + var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]); + var startAngle = me._starts[index]; + var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]); + + var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]); + var options = arc._options || {}; + + helpers$1.extend(arc, { + // Utility + _datasetIndex: me.index, + _index: index, + _scale: scale, + + // Desired view properties + _model: { + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + borderAlign: options.borderAlign, + x: centerX, + y: centerY, + innerRadius: 0, + outerRadius: reset ? resetRadius : distance, + startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle, + endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle, + label: helpers$1.valueAtIndexOrDefault(labels, index, labels[index]) + } + }); + + arc.pivot(); + }, + + countVisibleElements: function() { + var dataset = this.getDataset(); + var meta = this.getMeta(); + var count = 0; + + helpers$1.each(meta.data, function(element, index) { + if (!isNaN(dataset.data[index]) && !element.hidden) { + count++; + } + }); + + return count; + }, + + /** + * @protected + */ + setHoverStyle: function(arc) { + var model = arc._model; + var options = arc._options; + var getHoverColor = helpers$1.getHoverColor; + var valueOrDefault = helpers$1.valueOrDefault; + + arc.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + }; + + model.backgroundColor = valueOrDefault(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault(options.hoverBorderWidth, options.borderWidth); + }, + + /** + * @private + */ + _computeAngle: function(index) { + var me = this; + var count = this.getMeta().count; + var dataset = me.getDataset(); + var meta = me.getMeta(); + + if (isNaN(dataset.data[index]) || meta.data[index].hidden) { + return 0; + } + + // Scriptable options + var context = { + chart: me.chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + return resolve$3([ + me.chart.options.elements.arc.angle, + (2 * Math.PI) / count + ], context, index); + } +}); - beforeUpdate: noop$2, - update: function(maxWidth, maxHeight, margins) { - var me = this; +core_defaults._set('pie', helpers$1.clone(core_defaults.doughnut)); +core_defaults._set('pie', { + cutoutPercentage: 0 +}); + +// Pie charts are Doughnut chart with different defaults +var controller_pie = controller_doughnut; - // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;) - me.beforeUpdate(); +var valueOrDefault$7 = helpers$1.valueOrDefault; + +core_defaults._set('radar', { + spanGaps: false, + scale: { + type: 'radialLinear' + }, + elements: { + line: { + fill: 'start', + tension: 0 // no bezier in radar + } + } +}); + +var controller_radar = core_datasetController.extend({ + datasetElementType: elements.Line, + + dataElementType: elements.Point, + + linkScales: helpers$1.noop, + + /** + * @private + */ + _datasetElementOptions: [ + 'backgroundColor', + 'borderWidth', + 'borderColor', + 'borderCapStyle', + 'borderDash', + 'borderDashOffset', + 'borderJoinStyle', + 'fill' + ], + + /** + * @private + */ + _dataElementOptions: { + backgroundColor: 'pointBackgroundColor', + borderColor: 'pointBorderColor', + borderWidth: 'pointBorderWidth', + hitRadius: 'pointHitRadius', + hoverBackgroundColor: 'pointHoverBackgroundColor', + hoverBorderColor: 'pointHoverBorderColor', + hoverBorderWidth: 'pointHoverBorderWidth', + hoverRadius: 'pointHoverRadius', + pointStyle: 'pointStyle', + radius: 'pointRadius', + rotation: 'pointRotation' + }, + + /** + * @private + */ + _getIndexScaleId: function() { + return this.chart.scale.id; + }, + + /** + * @private + */ + _getValueScaleId: function() { + return this.chart.scale.id; + }, + + update: function(reset) { + var me = this; + var meta = me.getMeta(); + var line = meta.dataset; + var points = meta.data || []; + var scale = me.chart.scale; + var config = me._config; + var i, ilen; + + // Compatibility: If the properties are defined with only the old name, use those values + if (config.tension !== undefined && config.lineTension === undefined) { + config.lineTension = config.tension; + } + + // Utility + line._scale = scale; + line._datasetIndex = me.index; + // Data + line._children = points; + line._loop = true; + // Model + line._model = me._resolveDatasetElementOptions(line); + + line.pivot(); + + // Update Points + for (i = 0, ilen = points.length; i < ilen; ++i) { + me.updateElement(points[i], i, reset); + } + + // Update bezier control points + me.updateBezierControlPoints(); + + // Now pivot the point for animation + for (i = 0, ilen = points.length; i < ilen; ++i) { + points[i].pivot(); + } + }, + + updateElement: function(point, index, reset) { + var me = this; + var custom = point.custom || {}; + var dataset = me.getDataset(); + var scale = me.chart.scale; + var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]); + var options = me._resolveDataElementOptions(point, index); + var lineModel = me.getMeta().dataset._model; + var x = reset ? scale.xCenter : pointPosition.x; + var y = reset ? scale.yCenter : pointPosition.y; + + // Utility + point._scale = scale; + point._options = options; + point._datasetIndex = me.index; + point._index = index; + + // Desired view properties + point._model = { + x: x, // value not used in dataset scale, but we want a consistent API between scales + y: y, + skip: custom.skip || isNaN(x) || isNaN(y), + // Appearance + radius: options.radius, + pointStyle: options.pointStyle, + rotation: options.rotation, + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + tension: valueOrDefault$7(custom.tension, lineModel ? lineModel.tension : 0), + + // Tooltip + hitRadius: options.hitRadius + }; + }, + + /** + * @private + */ + _resolveDatasetElementOptions: function() { + var me = this; + var config = me._config; + var options = me.chart.options; + var values = core_datasetController.prototype._resolveDatasetElementOptions.apply(me, arguments); + + values.spanGaps = valueOrDefault$7(config.spanGaps, options.spanGaps); + values.tension = valueOrDefault$7(config.lineTension, options.elements.line.tension); + + return values; + }, + + updateBezierControlPoints: function() { + var me = this; + var meta = me.getMeta(); + var area = me.chart.chartArea; + var points = meta.data || []; + var i, ilen, model, controlPoints; + + // Only consider points that are drawn in case the spanGaps option is used + if (meta.dataset._model.spanGaps) { + points = points.filter(function(pt) { + return !pt._model.skip; + }); + } + + function capControlPoint(pt, min, max) { + return Math.max(Math.min(pt, max), min); + } + + for (i = 0, ilen = points.length; i < ilen; ++i) { + model = points[i]._model; + controlPoints = helpers$1.splineCurve( + helpers$1.previousItem(points, i, true)._model, + model, + helpers$1.nextItem(points, i, true)._model, + model.tension + ); + + // Prevent the bezier going outside of the bounds of the graph + model.controlPointPreviousX = capControlPoint(controlPoints.previous.x, area.left, area.right); + model.controlPointPreviousY = capControlPoint(controlPoints.previous.y, area.top, area.bottom); + model.controlPointNextX = capControlPoint(controlPoints.next.x, area.left, area.right); + model.controlPointNextY = capControlPoint(controlPoints.next.y, area.top, area.bottom); + } + }, + + setHoverStyle: function(point) { + var model = point._model; + var options = point._options; + var getHoverColor = helpers$1.getHoverColor; + + point.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + radius: model.radius + }; + + model.backgroundColor = valueOrDefault$7(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault$7(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault$7(options.hoverBorderWidth, options.borderWidth); + model.radius = valueOrDefault$7(options.hoverRadius, options.radius); + } +}); - // Absorb the master measurements - me.maxWidth = maxWidth; - me.maxHeight = maxHeight; - me.margins = margins; +core_defaults._set('scatter', { + hover: { + mode: 'single' + }, + + scales: { + xAxes: [{ + id: 'x-axis-1', // need an ID so datasets can reference the scale + type: 'linear', // scatter should not use a category axis + position: 'bottom' + }], + yAxes: [{ + id: 'y-axis-1', + type: 'linear', + position: 'left' + }] + }, + + tooltips: { + callbacks: { + title: function() { + return ''; // doesn't make sense for scatter since data are formatted as a point + }, + label: function(item) { + return '(' + item.xLabel + ', ' + item.yLabel + ')'; + } + } + } +}); + +core_defaults._set('global', { + datasets: { + scatter: { + showLine: false + } + } +}); + +// Scatter charts use line controllers +var controller_scatter = controller_line; - // Dimensions - me.beforeSetDimensions(); - me.setDimensions(); - me.afterSetDimensions(); - // Labels - me.beforeBuildLabels(); - me.buildLabels(); - me.afterBuildLabels(); +// NOTE export a map in which the key represents the controller type, not +// the class, and so must be CamelCase in order to be correctly retrieved +// by the controller in core.controller.js (`controllers[meta.type]`). + +var controllers = { + bar: controller_bar, + bubble: controller_bubble, + doughnut: controller_doughnut, + horizontalBar: controller_horizontalBar, + line: controller_line, + polarArea: controller_polarArea, + pie: controller_pie, + radar: controller_radar, + scatter: controller_scatter +}; - // Fit - me.beforeFit(); - me.fit(); - me.afterFit(); - // - me.afterUpdate(); +/** + * Helper function to get relative position for an event + * @param {Event|IEvent} event - The event to get the position for + * @param {Chart} chart - The chart + * @returns {object} the event position + */ +function getRelativePosition(e, chart) { + if (e.native) { + return { + x: e.x, + y: e.y + }; + } + + return helpers$1.getRelativePosition(e, chart); +} + +/** + * Helper function to traverse all of the visible elements in the chart + * @param {Chart} chart - the chart + * @param {function} handler - the callback to execute for each visible item + */ +function parseVisibleItems(chart, handler) { + var metasets = chart._getSortedVisibleDatasetMetas(); + var metadata, i, j, ilen, jlen, element; + + for (i = 0, ilen = metasets.length; i < ilen; ++i) { + metadata = metasets[i].data; + for (j = 0, jlen = metadata.length; j < jlen; ++j) { + element = metadata[j]; + if (!element._view.skip) { + handler(element); + } + } + } +} + +/** + * Helper function to get the items that intersect the event position + * @param {ChartElement[]} items - elements to filter + * @param {object} position - the point to be nearest to + * @return {ChartElement[]} the nearest items + */ +function getIntersectItems(chart, position) { + var elements = []; + + parseVisibleItems(chart, function(element) { + if (element.inRange(position.x, position.y)) { + elements.push(element); + } + }); + + return elements; +} + +/** + * Helper function to get the items nearest to the event position considering all visible items in teh chart + * @param {Chart} chart - the chart to look at elements from + * @param {object} position - the point to be nearest to + * @param {boolean} intersect - if true, only consider items that intersect the position + * @param {function} distanceMetric - function to provide the distance between points + * @return {ChartElement[]} the nearest items + */ +function getNearestItems(chart, position, intersect, distanceMetric) { + var minDistance = Number.POSITIVE_INFINITY; + var nearestItems = []; + + parseVisibleItems(chart, function(element) { + if (intersect && !element.inRange(position.x, position.y)) { + return; + } + + var center = element.getCenterPoint(); + var distance = distanceMetric(position, center); + if (distance < minDistance) { + nearestItems = [element]; + minDistance = distance; + } else if (distance === minDistance) { + // Can have multiple items at the same distance in which case we sort by size + nearestItems.push(element); + } + }); + + return nearestItems; +} + +/** + * Get a distance metric function for two points based on the + * axis mode setting + * @param {string} axis - the axis mode. x|y|xy + */ +function getDistanceMetricForAxis(axis) { + var useX = axis.indexOf('x') !== -1; + var useY = axis.indexOf('y') !== -1; + + return function(pt1, pt2) { + var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0; + var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0; + return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2)); + }; +} + +function indexMode(chart, e, options) { + var position = getRelativePosition(e, chart); + // Default axis for index mode is 'x' to match old behaviour + options.axis = options.axis || 'x'; + var distanceMetric = getDistanceMetricForAxis(options.axis); + var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric); + var elements = []; + + if (!items.length) { + return []; + } + + chart._getSortedVisibleDatasetMetas().forEach(function(meta) { + var element = meta.data[items[0]._index]; + + // don't count items that are skipped (null data) + if (element && !element._view.skip) { + elements.push(element); + } + }); + + return elements; +} + +/** + * @interface IInteractionOptions + */ +/** + * If true, only consider items that intersect the point + * @name IInterfaceOptions#boolean + * @type Boolean + */ + +/** + * Contains interaction related functions + * @namespace Chart.Interaction + */ +var core_interaction = { + // Helper function for different modes + modes: { + single: function(chart, e) { + var position = getRelativePosition(e, chart); + var elements = []; + + parseVisibleItems(chart, function(element) { + if (element.inRange(position.x, position.y)) { + elements.push(element); + return elements; + } + }); + + return elements.slice(0, 1); + }, + + /** + * @function Chart.Interaction.modes.label + * @deprecated since version 2.4.0 + * @todo remove at version 3 + * @private + */ + label: indexMode, + + /** + * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something + * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item + * @function Chart.Interaction.modes.index + * @since v2.4.0 + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use during interaction + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + index: indexMode, + + /** + * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something + * If the options.intersect is false, we find the nearest item and return the items in that dataset + * @function Chart.Interaction.modes.dataset + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use during interaction + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + dataset: function(chart, e, options) { + var position = getRelativePosition(e, chart); + options.axis = options.axis || 'xy'; + var distanceMetric = getDistanceMetricForAxis(options.axis); + var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric); + + if (items.length > 0) { + items = chart.getDatasetMeta(items[0]._datasetIndex).data; + } + + return items; + }, + + /** + * @function Chart.Interaction.modes.x-axis + * @deprecated since version 2.4.0. Use index mode and intersect == true + * @todo remove at version 3 + * @private + */ + 'x-axis': function(chart, e) { + return indexMode(chart, e, {intersect: false}); + }, + + /** + * Point mode returns all elements that hit test based on the event position + * of the event + * @function Chart.Interaction.modes.intersect + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + point: function(chart, e) { + var position = getRelativePosition(e, chart); + return getIntersectItems(chart, position); + }, + + /** + * nearest mode returns the element closest to the point + * @function Chart.Interaction.modes.intersect + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + nearest: function(chart, e, options) { + var position = getRelativePosition(e, chart); + options.axis = options.axis || 'xy'; + var distanceMetric = getDistanceMetricForAxis(options.axis); + return getNearestItems(chart, position, options.intersect, distanceMetric); + }, + + /** + * x mode returns the elements that hit-test at the current x coordinate + * @function Chart.Interaction.modes.x + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + x: function(chart, e, options) { + var position = getRelativePosition(e, chart); + var items = []; + var intersectsItem = false; + + parseVisibleItems(chart, function(element) { + if (element.inXRange(position.x)) { + items.push(element); + } + + if (element.inRange(position.x, position.y)) { + intersectsItem = true; + } + }); + + // If we want to trigger on an intersect and we don't have any items + // that intersect the position, return nothing + if (options.intersect && !intersectsItem) { + items = []; + } + return items; + }, + + /** + * y mode returns the elements that hit-test at the current y coordinate + * @function Chart.Interaction.modes.y + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + y: function(chart, e, options) { + var position = getRelativePosition(e, chart); + var items = []; + var intersectsItem = false; + + parseVisibleItems(chart, function(element) { + if (element.inYRange(position.y)) { + items.push(element); + } + + if (element.inRange(position.x, position.y)) { + intersectsItem = true; + } + }); + + // If we want to trigger on an intersect and we don't have any items + // that intersect the position, return nothing + if (options.intersect && !intersectsItem) { + items = []; + } + return items; + } + } +}; - return me.minSize; +var extend = helpers$1.extend; + +function filterByPosition(array, position) { + return helpers$1.where(array, function(v) { + return v.pos === position; + }); +} + +function sortByWeight(array, reverse) { + return array.sort(function(a, b) { + var v0 = reverse ? b : a; + var v1 = reverse ? a : b; + return v0.weight === v1.weight ? + v0.index - v1.index : + v0.weight - v1.weight; + }); +} + +function wrapBoxes(boxes) { + var layoutBoxes = []; + var i, ilen, box; + + for (i = 0, ilen = (boxes || []).length; i < ilen; ++i) { + box = boxes[i]; + layoutBoxes.push({ + index: i, + box: box, + pos: box.position, + horizontal: box.isHorizontal(), + weight: box.weight + }); + } + return layoutBoxes; +} + +function setLayoutDims(layouts, params) { + var i, ilen, layout; + for (i = 0, ilen = layouts.length; i < ilen; ++i) { + layout = layouts[i]; + // store width used instead of chartArea.w in fitBoxes + layout.width = layout.horizontal + ? layout.box.fullWidth && params.availableWidth + : params.vBoxMaxWidth; + // store height used instead of chartArea.h in fitBoxes + layout.height = layout.horizontal && params.hBoxMaxHeight; + } +} + +function buildLayoutBoxes(boxes) { + var layoutBoxes = wrapBoxes(boxes); + var left = sortByWeight(filterByPosition(layoutBoxes, 'left'), true); + var right = sortByWeight(filterByPosition(layoutBoxes, 'right')); + var top = sortByWeight(filterByPosition(layoutBoxes, 'top'), true); + var bottom = sortByWeight(filterByPosition(layoutBoxes, 'bottom')); + + return { + leftAndTop: left.concat(top), + rightAndBottom: right.concat(bottom), + chartArea: filterByPosition(layoutBoxes, 'chartArea'), + vertical: left.concat(right), + horizontal: top.concat(bottom) + }; +} + +function getCombinedMax(maxPadding, chartArea, a, b) { + return Math.max(maxPadding[a], chartArea[a]) + Math.max(maxPadding[b], chartArea[b]); +} + +function updateDims(chartArea, params, layout) { + var box = layout.box; + var maxPadding = chartArea.maxPadding; + var newWidth, newHeight; + + if (layout.size) { + // this layout was already counted for, lets first reduce old size + chartArea[layout.pos] -= layout.size; + } + layout.size = layout.horizontal ? box.height : box.width; + chartArea[layout.pos] += layout.size; + + if (box.getPadding) { + var boxPadding = box.getPadding(); + maxPadding.top = Math.max(maxPadding.top, boxPadding.top); + maxPadding.left = Math.max(maxPadding.left, boxPadding.left); + maxPadding.bottom = Math.max(maxPadding.bottom, boxPadding.bottom); + maxPadding.right = Math.max(maxPadding.right, boxPadding.right); + } + + newWidth = params.outerWidth - getCombinedMax(maxPadding, chartArea, 'left', 'right'); + newHeight = params.outerHeight - getCombinedMax(maxPadding, chartArea, 'top', 'bottom'); + + if (newWidth !== chartArea.w || newHeight !== chartArea.h) { + chartArea.w = newWidth; + chartArea.h = newHeight; + + // return true if chart area changed in layout's direction + var sizes = layout.horizontal ? [newWidth, chartArea.w] : [newHeight, chartArea.h]; + return sizes[0] !== sizes[1] && (!isNaN(sizes[0]) || !isNaN(sizes[1])); + } +} + +function handleMaxPadding(chartArea) { + var maxPadding = chartArea.maxPadding; + + function updatePos(pos) { + var change = Math.max(maxPadding[pos] - chartArea[pos], 0); + chartArea[pos] += change; + return change; + } + chartArea.y += updatePos('top'); + chartArea.x += updatePos('left'); + updatePos('right'); + updatePos('bottom'); +} + +function getMargins(horizontal, chartArea) { + var maxPadding = chartArea.maxPadding; + + function marginForPositions(positions) { + var margin = {left: 0, top: 0, right: 0, bottom: 0}; + positions.forEach(function(pos) { + margin[pos] = Math.max(chartArea[pos], maxPadding[pos]); + }); + return margin; + } + + return horizontal + ? marginForPositions(['left', 'right']) + : marginForPositions(['top', 'bottom']); +} + +function fitBoxes(boxes, chartArea, params) { + var refitBoxes = []; + var i, ilen, layout, box, refit, changed; + + for (i = 0, ilen = boxes.length; i < ilen; ++i) { + layout = boxes[i]; + box = layout.box; + + box.update( + layout.width || chartArea.w, + layout.height || chartArea.h, + getMargins(layout.horizontal, chartArea) + ); + if (updateDims(chartArea, params, layout)) { + changed = true; + if (refitBoxes.length) { + // Dimensions changed and there were non full width boxes before this + // -> we have to refit those + refit = true; + } + } + if (!box.fullWidth) { // fullWidth boxes don't need to be re-fitted in any case + refitBoxes.push(layout); + } + } + + return refit ? fitBoxes(refitBoxes, chartArea, params) || changed : changed; +} + +function placeBoxes(boxes, chartArea, params) { + var userPadding = params.padding; + var x = chartArea.x; + var y = chartArea.y; + var i, ilen, layout, box; + + for (i = 0, ilen = boxes.length; i < ilen; ++i) { + layout = boxes[i]; + box = layout.box; + if (layout.horizontal) { + box.left = box.fullWidth ? userPadding.left : chartArea.left; + box.right = box.fullWidth ? params.outerWidth - userPadding.right : chartArea.left + chartArea.w; + box.top = y; + box.bottom = y + box.height; + box.width = box.right - box.left; + y = box.bottom; + } else { + box.left = x; + box.right = x + box.width; + box.top = chartArea.top; + box.bottom = chartArea.top + chartArea.h; + box.height = box.bottom - box.top; + x = box.right; + } + } + + chartArea.x = x; + chartArea.y = y; +} + +core_defaults._set('global', { + layout: { + padding: { + top: 0, + right: 0, + bottom: 0, + left: 0 + } + } +}); + +/** + * @interface ILayoutItem + * @prop {string} position - The position of the item in the chart layout. Possible values are + * 'left', 'top', 'right', 'bottom', and 'chartArea' + * @prop {number} weight - The weight used to sort the item. Higher weights are further away from the chart area + * @prop {boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down + * @prop {function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom) + * @prop {function} update - Takes two parameters: width and height. Returns size of item + * @prop {function} getPadding - Returns an object with padding on the edges + * @prop {number} width - Width of item. Must be valid after update() + * @prop {number} height - Height of item. Must be valid after update() + * @prop {number} left - Left edge of the item. Set by layout system and cannot be used in update + * @prop {number} top - Top edge of the item. Set by layout system and cannot be used in update + * @prop {number} right - Right edge of the item. Set by layout system and cannot be used in update + * @prop {number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update + */ + +// The layout service is very self explanatory. It's responsible for the layout within a chart. +// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need +// It is this service's responsibility of carrying out that layout. +var core_layouts = { + defaults: {}, + + /** + * Register a box to a chart. + * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title. + * @param {Chart} chart - the chart to use + * @param {ILayoutItem} item - the item to add to be layed out + */ + addBox: function(chart, item) { + if (!chart.boxes) { + chart.boxes = []; + } + + // initialize item with default values + item.fullWidth = item.fullWidth || false; + item.position = item.position || 'top'; + item.weight = item.weight || 0; + item._layers = item._layers || function() { + return [{ + z: 0, + draw: function() { + item.draw.apply(item, arguments); + } + }]; + }; + + chart.boxes.push(item); + }, + + /** + * Remove a layoutItem from a chart + * @param {Chart} chart - the chart to remove the box from + * @param {ILayoutItem} layoutItem - the item to remove from the layout + */ + removeBox: function(chart, layoutItem) { + var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1; + if (index !== -1) { + chart.boxes.splice(index, 1); + } + }, + + /** + * Sets (or updates) options on the given `item`. + * @param {Chart} chart - the chart in which the item lives (or will be added to) + * @param {ILayoutItem} item - the item to configure with the given options + * @param {object} options - the new item options. + */ + configure: function(chart, item, options) { + var props = ['fullWidth', 'position', 'weight']; + var ilen = props.length; + var i = 0; + var prop; + + for (; i < ilen; ++i) { + prop = props[i]; + if (options.hasOwnProperty(prop)) { + item[prop] = options[prop]; + } + } + }, + + /** + * Fits boxes of the given chart into the given size by having each box measure itself + * then running a fitting algorithm + * @param {Chart} chart - the chart + * @param {number} width - the width to fit into + * @param {number} height - the height to fit into + */ + update: function(chart, width, height) { + if (!chart) { + return; + } + + var layoutOptions = chart.options.layout || {}; + var padding = helpers$1.options.toPadding(layoutOptions.padding); + + var availableWidth = width - padding.width; + var availableHeight = height - padding.height; + var boxes = buildLayoutBoxes(chart.boxes); + var verticalBoxes = boxes.vertical; + var horizontalBoxes = boxes.horizontal; + + // Essentially we now have any number of boxes on each of the 4 sides. + // Our canvas looks like the following. + // The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and + // B1 is the bottom axis + // There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays + // These locations are single-box locations only, when trying to register a chartArea location that is already taken, + // an error will be thrown. + // + // |----------------------------------------------------| + // | T1 (Full Width) | + // |----------------------------------------------------| + // | | | T2 | | + // | |----|-------------------------------------|----| + // | | | C1 | | C2 | | + // | | |----| |----| | + // | | | | | + // | L1 | L2 | ChartArea (C0) | R1 | + // | | | | | + // | | |----| |----| | + // | | | C3 | | C4 | | + // | |----|-------------------------------------|----| + // | | | B1 | | + // |----------------------------------------------------| + // | B2 (Full Width) | + // |----------------------------------------------------| + // + + var params = Object.freeze({ + outerWidth: width, + outerHeight: height, + padding: padding, + availableWidth: availableWidth, + vBoxMaxWidth: availableWidth / 2 / verticalBoxes.length, + hBoxMaxHeight: availableHeight / 2 + }); + var chartArea = extend({ + maxPadding: extend({}, padding), + w: availableWidth, + h: availableHeight, + x: padding.left, + y: padding.top + }, padding); + + setLayoutDims(verticalBoxes.concat(horizontalBoxes), params); + + // First fit vertical boxes + fitBoxes(verticalBoxes, chartArea, params); + + // Then fit horizontal boxes + if (fitBoxes(horizontalBoxes, chartArea, params)) { + // if the area changed, re-fit vertical boxes + fitBoxes(verticalBoxes, chartArea, params); + } + + handleMaxPadding(chartArea); + + // Finally place the boxes to correct coordinates + placeBoxes(boxes.leftAndTop, chartArea, params); + + // Move to opposite side of chart + chartArea.x += chartArea.w; + chartArea.y += chartArea.h; + + placeBoxes(boxes.rightAndBottom, chartArea, params); + + chart.chartArea = { + left: chartArea.left, + top: chartArea.top, + right: chartArea.left + chartArea.w, + bottom: chartArea.top + chartArea.h + }; + + // Finally update boxes in chartArea (radial scale for example) + helpers$1.each(boxes.chartArea, function(layout) { + var box = layout.box; + extend(box, chart.chartArea); + box.update(chartArea.w, chartArea.h); + }); + } +}; - }, - afterUpdate: noop$2, - - // - - beforeSetDimensions: noop$2, - setDimensions: function() { - var me = this; - // Set the unconstrained dimension before label rotation - if (me.isHorizontal()) { - // Reset position before calculating rotation - me.width = me.maxWidth; - me.left = 0; - me.right = me.width; - } else { - me.height = me.maxHeight; +/** + * Platform fallback implementation (minimal). + * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939 + */ + +var platform_basic = { + acquireContext: function(item) { + if (item && item.canvas) { + // Support for any object associated to a canvas (including a context2d) + item = item.canvas; + } + + return item && item.getContext('2d') || null; + } +}; - // Reset position before calculating rotation - me.top = 0; - me.bottom = me.height; - } +var platform_dom = "/*\r\n * DOM element rendering detection\r\n * https://davidwalsh.name/detect-node-insertion\r\n */\r\n@keyframes chartjs-render-animation {\r\n\tfrom { opacity: 0.99; }\r\n\tto { opacity: 1; }\r\n}\r\n\r\n.chartjs-render-monitor {\r\n\tanimation: chartjs-render-animation 0.001s;\r\n}\r\n\r\n/*\r\n * DOM element resizing detection\r\n * https://github.com/marcj/css-element-queries\r\n */\r\n.chartjs-size-monitor,\r\n.chartjs-size-monitor-expand,\r\n.chartjs-size-monitor-shrink {\r\n\tposition: absolute;\r\n\tdirection: ltr;\r\n\tleft: 0;\r\n\ttop: 0;\r\n\tright: 0;\r\n\tbottom: 0;\r\n\toverflow: hidden;\r\n\tpointer-events: none;\r\n\tvisibility: hidden;\r\n\tz-index: -1;\r\n}\r\n\r\n.chartjs-size-monitor-expand > div {\r\n\tposition: absolute;\r\n\twidth: 1000000px;\r\n\theight: 1000000px;\r\n\tleft: 0;\r\n\ttop: 0;\r\n}\r\n\r\n.chartjs-size-monitor-shrink > div {\r\n\tposition: absolute;\r\n\twidth: 200%;\r\n\theight: 200%;\r\n\tleft: 0;\r\n\ttop: 0;\r\n}\r\n"; - // Reset padding - me.paddingLeft = 0; - me.paddingTop = 0; - me.paddingRight = 0; - me.paddingBottom = 0; +var platform_dom$1 = /*#__PURE__*/Object.freeze({ +__proto__: null, +'default': platform_dom +}); - // Reset minSize - me.minSize = { - width: 0, - height: 0 - }; - }, - afterSetDimensions: noop$2, +var stylesheet = getCjsExportFromNamespace(platform_dom$1); - // +var EXPANDO_KEY = '$chartjs'; +var CSS_PREFIX = 'chartjs-'; +var CSS_SIZE_MONITOR = CSS_PREFIX + 'size-monitor'; +var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor'; +var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation'; +var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart']; + +/** + * DOM event types -> Chart.js event types. + * Note: only events with different types are mapped. + * @see https://developer.mozilla.org/en-US/docs/Web/Events + */ +var EVENT_TYPES = { + touchstart: 'mousedown', + touchmove: 'mousemove', + touchend: 'mouseup', + pointerenter: 'mouseenter', + pointerdown: 'mousedown', + pointermove: 'mousemove', + pointerup: 'mouseup', + pointerleave: 'mouseout', + pointerout: 'mouseout' +}; + +/** + * The "used" size is the final value of a dimension property after all calculations have + * been performed. This method uses the computed style of `element` but returns undefined + * if the computed style is not expressed in pixels. That can happen in some cases where + * `element` has a size relative to its parent and this last one is not yet displayed, + * for example because of `display: none` on a parent node. + * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value + * @returns {number} Size in pixels or undefined if unknown. + */ +function readUsedSize(element, property) { + var value = helpers$1.getStyle(element, property); + var matches = value && value.match(/^(\d+)(\.\d+)?px$/); + return matches ? Number(matches[1]) : undefined; +} + +/** + * Initializes the canvas style and render size without modifying the canvas display size, + * since responsiveness is handled by the controller.resize() method. The config is used + * to determine the aspect ratio to apply in case no explicit height has been specified. + */ +function initCanvas(canvas, config) { + var style = canvas.style; + + // NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it + // returns null or '' if no explicit value has been set to the canvas attribute. + var renderHeight = canvas.getAttribute('height'); + var renderWidth = canvas.getAttribute('width'); + + // Chart.js modifies some canvas values that we want to restore on destroy + canvas[EXPANDO_KEY] = { + initial: { + height: renderHeight, + width: renderWidth, + style: { + display: style.display, + height: style.height, + width: style.width + } + } + }; + + // Force canvas to display as block to avoid extra space caused by inline + // elements, which would interfere with the responsive resize process. + // https://github.com/chartjs/Chart.js/issues/2538 + style.display = style.display || 'block'; + + if (renderWidth === null || renderWidth === '') { + var displayWidth = readUsedSize(canvas, 'width'); + if (displayWidth !== undefined) { + canvas.width = displayWidth; + } + } + + if (renderHeight === null || renderHeight === '') { + if (canvas.style.height === '') { + // If no explicit render height and style height, let's apply the aspect ratio, + // which one can be specified by the user but also by charts as default option + // (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2. + canvas.height = canvas.width / (config.options.aspectRatio || 2); + } else { + var displayHeight = readUsedSize(canvas, 'height'); + if (displayWidth !== undefined) { + canvas.height = displayHeight; + } + } + } + + return canvas; +} + +/** + * Detects support for options object argument in addEventListener. + * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support + * @private + */ +var supportsEventListenerOptions = (function() { + var supports = false; + try { + var options = Object.defineProperty({}, 'passive', { + // eslint-disable-next-line getter-return + get: function() { + supports = true; + } + }); + window.addEventListener('e', null, options); + } catch (e) { + // continue regardless of error + } + return supports; +}()); + +// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events. +// https://github.com/chartjs/Chart.js/issues/4287 +var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false; + +function addListener(node, type, listener) { + node.addEventListener(type, listener, eventListenerOptions); +} + +function removeListener(node, type, listener) { + node.removeEventListener(type, listener, eventListenerOptions); +} + +function createEvent(type, chart, x, y, nativeEvent) { + return { + type: type, + chart: chart, + native: nativeEvent || null, + x: x !== undefined ? x : null, + y: y !== undefined ? y : null, + }; +} + +function fromNativeEvent(event, chart) { + var type = EVENT_TYPES[event.type] || event.type; + var pos = helpers$1.getRelativePosition(event, chart); + return createEvent(type, chart, pos.x, pos.y, event); +} + +function throttled(fn, thisArg) { + var ticking = false; + var args = []; + + return function() { + args = Array.prototype.slice.call(arguments); + thisArg = thisArg || this; + + if (!ticking) { + ticking = true; + helpers$1.requestAnimFrame.call(window, function() { + ticking = false; + fn.apply(thisArg, args); + }); + } + }; +} + +function createDiv(cls) { + var el = document.createElement('div'); + el.className = cls || ''; + return el; +} + +// Implementation based on https://github.com/marcj/css-element-queries +function createResizer(handler) { + var maxSize = 1000000; + + // NOTE(SB) Don't use innerHTML because it could be considered unsafe. + // https://github.com/chartjs/Chart.js/issues/5902 + var resizer = createDiv(CSS_SIZE_MONITOR); + var expand = createDiv(CSS_SIZE_MONITOR + '-expand'); + var shrink = createDiv(CSS_SIZE_MONITOR + '-shrink'); + + expand.appendChild(createDiv()); + shrink.appendChild(createDiv()); + + resizer.appendChild(expand); + resizer.appendChild(shrink); + resizer._reset = function() { + expand.scrollLeft = maxSize; + expand.scrollTop = maxSize; + shrink.scrollLeft = maxSize; + shrink.scrollTop = maxSize; + }; + + var onScroll = function() { + resizer._reset(); + handler(); + }; + + addListener(expand, 'scroll', onScroll.bind(expand, 'expand')); + addListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink')); + + return resizer; +} + +// https://davidwalsh.name/detect-node-insertion +function watchForRender(node, handler) { + var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {}); + var proxy = expando.renderProxy = function(e) { + if (e.animationName === CSS_RENDER_ANIMATION) { + handler(); + } + }; + + helpers$1.each(ANIMATION_START_EVENTS, function(type) { + addListener(node, type, proxy); + }); + + // #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class + // is removed then added back immediately (same animation frame?). Accessing the + // `offsetParent` property will force a reflow and re-evaluate the CSS animation. + // https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics + // https://github.com/chartjs/Chart.js/issues/4737 + expando.reflow = !!node.offsetParent; + + node.classList.add(CSS_RENDER_MONITOR); +} + +function unwatchForRender(node) { + var expando = node[EXPANDO_KEY] || {}; + var proxy = expando.renderProxy; + + if (proxy) { + helpers$1.each(ANIMATION_START_EVENTS, function(type) { + removeListener(node, type, proxy); + }); + + delete expando.renderProxy; + } + + node.classList.remove(CSS_RENDER_MONITOR); +} + +function addResizeListener(node, listener, chart) { + var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {}); + + // Let's keep track of this added resizer and thus avoid DOM query when removing it. + var resizer = expando.resizer = createResizer(throttled(function() { + if (expando.resizer) { + var container = chart.options.maintainAspectRatio && node.parentNode; + var w = container ? container.clientWidth : 0; + listener(createEvent('resize', chart)); + if (container && container.clientWidth < w && chart.canvas) { + // If the container size shrank during chart resize, let's assume + // scrollbar appeared. So we resize again with the scrollbar visible - + // effectively making chart smaller and the scrollbar hidden again. + // Because we are inside `throttled`, and currently `ticking`, scroll + // events are ignored during this whole 2 resize process. + // If we assumed wrong and something else happened, we are resizing + // twice in a frame (potential performance issue) + listener(createEvent('resize', chart)); + } + } + })); + + // The resizer needs to be attached to the node parent, so we first need to be + // sure that `node` is attached to the DOM before injecting the resizer element. + watchForRender(node, function() { + if (expando.resizer) { + var container = node.parentNode; + if (container && container !== resizer.parentNode) { + container.insertBefore(resizer, container.firstChild); + } + + // The container size might have changed, let's reset the resizer state. + resizer._reset(); + } + }); +} + +function removeResizeListener(node) { + var expando = node[EXPANDO_KEY] || {}; + var resizer = expando.resizer; + + delete expando.resizer; + unwatchForRender(node); + + if (resizer && resizer.parentNode) { + resizer.parentNode.removeChild(resizer); + } +} + +/** + * Injects CSS styles inline if the styles are not already present. + * @param {HTMLDocument|ShadowRoot} rootNode - the node to contain the <style>. + * @param {string} css - the CSS to be injected. + */ +function injectCSS(rootNode, css) { + // https://stackoverflow.com/q/3922139 + var expando = rootNode[EXPANDO_KEY] || (rootNode[EXPANDO_KEY] = {}); + if (!expando.containsStyles) { + expando.containsStyles = true; + css = '/* Chart.js */\n' + css; + var style = document.createElement('style'); + style.setAttribute('type', 'text/css'); + style.appendChild(document.createTextNode(css)); + rootNode.appendChild(style); + } +} + +var platform_dom$2 = { + /** + * When `true`, prevents the automatic injection of the stylesheet required to + * correctly detect when the chart is added to the DOM and then resized. This + * switch has been added to allow external stylesheet (`dist/Chart(.min)?.js`) + * to be manually imported to make this library compatible with any CSP. + * See https://github.com/chartjs/Chart.js/issues/5208 + */ + disableCSSInjection: false, + + /** + * This property holds whether this platform is enabled for the current environment. + * Currently used by platform.js to select the proper implementation. + * @private + */ + _enabled: typeof window !== 'undefined' && typeof document !== 'undefined', + + /** + * Initializes resources that depend on platform options. + * @param {HTMLCanvasElement} canvas - The Canvas element. + * @private + */ + _ensureLoaded: function(canvas) { + if (!this.disableCSSInjection) { + // If the canvas is in a shadow DOM, then the styles must also be inserted + // into the same shadow DOM. + // https://github.com/chartjs/Chart.js/issues/5763 + var root = canvas.getRootNode ? canvas.getRootNode() : document; + var targetNode = root.host ? root : document.head; + injectCSS(targetNode, stylesheet); + } + }, + + acquireContext: function(item, config) { + if (typeof item === 'string') { + item = document.getElementById(item); + } else if (item.length) { + // Support for array based queries (such as jQuery) + item = item[0]; + } + + if (item && item.canvas) { + // Support for any object associated to a canvas (including a context2d) + item = item.canvas; + } + + // To prevent canvas fingerprinting, some add-ons undefine the getContext + // method, for example: https://github.com/kkapsner/CanvasBlocker + // https://github.com/chartjs/Chart.js/issues/2807 + var context = item && item.getContext && item.getContext('2d'); + + // `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is + // inside an iframe or when running in a protected environment. We could guess the + // types from their toString() value but let's keep things flexible and assume it's + // a sufficient condition if the item has a context2D which has item as `canvas`. + // https://github.com/chartjs/Chart.js/issues/3887 + // https://github.com/chartjs/Chart.js/issues/4102 + // https://github.com/chartjs/Chart.js/issues/4152 + if (context && context.canvas === item) { + // Load platform resources on first chart creation, to make it possible to + // import the library before setting platform options. + this._ensureLoaded(item); + initCanvas(item, config); + return context; + } + + return null; + }, + + releaseContext: function(context) { + var canvas = context.canvas; + if (!canvas[EXPANDO_KEY]) { + return; + } + + var initial = canvas[EXPANDO_KEY].initial; + ['height', 'width'].forEach(function(prop) { + var value = initial[prop]; + if (helpers$1.isNullOrUndef(value)) { + canvas.removeAttribute(prop); + } else { + canvas.setAttribute(prop, value); + } + }); + + helpers$1.each(initial.style || {}, function(value, key) { + canvas.style[key] = value; + }); + + // The canvas render size might have been changed (and thus the state stack discarded), + // we can't use save() and restore() to restore the initial state. So make sure that at + // least the canvas context is reset to the default state by setting the canvas width. + // https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html + // eslint-disable-next-line no-self-assign + canvas.width = canvas.width; + + delete canvas[EXPANDO_KEY]; + }, + + addEventListener: function(chart, type, listener) { + var canvas = chart.canvas; + if (type === 'resize') { + // Note: the resize event is not supported on all browsers. + addResizeListener(canvas, listener, chart); + return; + } + + var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {}); + var proxies = expando.proxies || (expando.proxies = {}); + var proxy = proxies[chart.id + '_' + type] = function(event) { + listener(fromNativeEvent(event, chart)); + }; + + addListener(canvas, type, proxy); + }, + + removeEventListener: function(chart, type, listener) { + var canvas = chart.canvas; + if (type === 'resize') { + // Note: the resize event is not supported on all browsers. + removeResizeListener(canvas); + return; + } + + var expando = listener[EXPANDO_KEY] || {}; + var proxies = expando.proxies || {}; + var proxy = proxies[chart.id + '_' + type]; + if (!proxy) { + return; + } + + removeListener(canvas, type, proxy); + } +}; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use EventTarget.addEventListener instead. + * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+ + * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener + * @function Chart.helpers.addEvent + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers$1.addEvent = addListener; + +/** + * Provided for backward compatibility, use EventTarget.removeEventListener instead. + * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+ + * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener + * @function Chart.helpers.removeEvent + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers$1.removeEvent = removeListener; - beforeBuildLabels: noop$2, - buildLabels: noop$2, - afterBuildLabels: noop$2, +// @TODO Make possible to select another platform at build time. +var implementation = platform_dom$2._enabled ? platform_dom$2 : platform_basic; + +/** + * @namespace Chart.platform + * @see https://chartjs.gitbooks.io/proposals/content/Platform.html + * @since 2.4.0 + */ +var platform = helpers$1.extend({ + /** + * @since 2.7.0 + */ + initialize: function() {}, + + /** + * Called at chart construction time, returns a context2d instance implementing + * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}. + * @param {*} item - The native item from which to acquire context (platform specific) + * @param {object} options - The chart options + * @returns {CanvasRenderingContext2D} context2d instance + */ + acquireContext: function() {}, + + /** + * Called at chart destruction time, releases any resources associated to the context + * previously returned by the acquireContext() method. + * @param {CanvasRenderingContext2D} context - The context2d instance + * @returns {boolean} true if the method succeeded, else false + */ + releaseContext: function() {}, + + /** + * Registers the specified listener on the given chart. + * @param {Chart} chart - Chart from which to listen for event + * @param {string} type - The ({@link IEvent}) type to listen for + * @param {function} listener - Receives a notification (an object that implements + * the {@link IEvent} interface) when an event of the specified type occurs. + */ + addEventListener: function() {}, + + /** + * Removes the specified listener previously registered with addEventListener. + * @param {Chart} chart - Chart from which to remove the listener + * @param {string} type - The ({@link IEvent}) type to remove + * @param {function} listener - The listener function to remove from the event target. + */ + removeEventListener: function() {} + +}, implementation); - // +core_defaults._set('global', { + plugins: {} +}); + +/** + * The plugin service singleton + * @namespace Chart.plugins + * @since 2.1.0 + */ +var core_plugins = { + /** + * Globally registered plugins. + * @private + */ + _plugins: [], + + /** + * This identifier is used to invalidate the descriptors cache attached to each chart + * when a global plugin is registered or unregistered. In this case, the cache ID is + * incremented and descriptors are regenerated during following API calls. + * @private + */ + _cacheId: 0, + + /** + * Registers the given plugin(s) if not already registered. + * @param {IPlugin[]|IPlugin} plugins plugin instance(s). + */ + register: function(plugins) { + var p = this._plugins; + ([]).concat(plugins).forEach(function(plugin) { + if (p.indexOf(plugin) === -1) { + p.push(plugin); + } + }); + + this._cacheId++; + }, + + /** + * Unregisters the given plugin(s) only if registered. + * @param {IPlugin[]|IPlugin} plugins plugin instance(s). + */ + unregister: function(plugins) { + var p = this._plugins; + ([]).concat(plugins).forEach(function(plugin) { + var idx = p.indexOf(plugin); + if (idx !== -1) { + p.splice(idx, 1); + } + }); + + this._cacheId++; + }, + + /** + * Remove all registered plugins. + * @since 2.1.5 + */ + clear: function() { + this._plugins = []; + this._cacheId++; + }, + + /** + * Returns the number of registered plugins? + * @returns {number} + * @since 2.1.5 + */ + count: function() { + return this._plugins.length; + }, + + /** + * Returns all registered plugin instances. + * @returns {IPlugin[]} array of plugin objects. + * @since 2.1.5 + */ + getAll: function() { + return this._plugins; + }, + + /** + * Calls enabled plugins for `chart` on the specified hook and with the given args. + * This method immediately returns as soon as a plugin explicitly returns false. The + * returned value can be used, for instance, to interrupt the current action. + * @param {Chart} chart - The chart instance for which plugins should be called. + * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate'). + * @param {Array} [args] - Extra arguments to apply to the hook call. + * @returns {boolean} false if any of the plugins return false, else returns true. + */ + notify: function(chart, hook, args) { + var descriptors = this.descriptors(chart); + var ilen = descriptors.length; + var i, descriptor, plugin, params, method; + + for (i = 0; i < ilen; ++i) { + descriptor = descriptors[i]; + plugin = descriptor.plugin; + method = plugin[hook]; + if (typeof method === 'function') { + params = [chart].concat(args || []); + params.push(descriptor.options); + if (method.apply(plugin, params) === false) { + return false; + } + } + } + + return true; + }, + + /** + * Returns descriptors of enabled plugins for the given chart. + * @returns {object[]} [{ plugin, options }] + * @private + */ + descriptors: function(chart) { + var cache = chart.$plugins || (chart.$plugins = {}); + if (cache.id === this._cacheId) { + return cache.descriptors; + } + + var plugins = []; + var descriptors = []; + var config = (chart && chart.config) || {}; + var options = (config.options && config.options.plugins) || {}; + + this._plugins.concat(config.plugins || []).forEach(function(plugin) { + var idx = plugins.indexOf(plugin); + if (idx !== -1) { + return; + } + + var id = plugin.id; + var opts = options[id]; + if (opts === false) { + return; + } + + if (opts === true) { + opts = helpers$1.clone(core_defaults.global.plugins[id]); + } + + plugins.push(plugin); + descriptors.push({ + plugin: plugin, + options: opts || {} + }); + }); + + cache.descriptors = descriptors; + cache.id = this._cacheId; + return descriptors; + }, + + /** + * Invalidates cache for the given chart: descriptors hold a reference on plugin option, + * but in some cases, this reference can be changed by the user when updating options. + * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167 + * @private + */ + _invalidate: function(chart) { + delete chart.$plugins; + } +}; - beforeFit: noop$2, - fit: function() { - var me = this; - var opts = me.options; - var minSize = me.minSize = {}; - var isHorizontal = me.isHorizontal(); - var lineCount, textSize; +var core_scaleService = { + // Scale registration object. Extensions can register new scale types (such as log or DB scales) and then + // use the new chart options to grab the correct scale + constructors: {}, + // Use a registration function so that we can move to an ES6 map when we no longer need to support + // old browsers + + // Scale config defaults + defaults: {}, + registerScaleType: function(type, scaleConstructor, scaleDefaults) { + this.constructors[type] = scaleConstructor; + this.defaults[type] = helpers$1.clone(scaleDefaults); + }, + getScaleConstructor: function(type) { + return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined; + }, + getScaleDefaults: function(type) { + // Return the scale defaults merged with the global settings so that we always use the latest ones + return this.defaults.hasOwnProperty(type) ? helpers$1.merge(Object.create(null), [core_defaults.scale, this.defaults[type]]) : {}; + }, + updateScaleDefaults: function(type, additions) { + var me = this; + if (me.defaults.hasOwnProperty(type)) { + me.defaults[type] = helpers$1.extend(me.defaults[type], additions); + } + }, + addScalesToLayout: function(chart) { + // Adds each scale to the chart.boxes array to be sized accordingly + helpers$1.each(chart.scales, function(scale) { + // Set ILayoutItem parameters for backwards compatibility + scale.fullWidth = scale.options.fullWidth; + scale.position = scale.options.position; + scale.weight = scale.options.weight; + core_layouts.addBox(chart, scale); + }); + } +}; - if (!opts.display) { - me.width = minSize.width = me.height = minSize.height = 0; - return; - } +var valueOrDefault$8 = helpers$1.valueOrDefault; +var getRtlHelper = helpers$1.rtl.getRtlAdapter; + +core_defaults._set('global', { + tooltips: { + enabled: true, + custom: null, + mode: 'nearest', + position: 'average', + intersect: true, + backgroundColor: 'rgba(0,0,0,0.8)', + titleFontStyle: 'bold', + titleSpacing: 2, + titleMarginBottom: 6, + titleFontColor: '#fff', + titleAlign: 'left', + bodySpacing: 2, + bodyFontColor: '#fff', + bodyAlign: 'left', + footerFontStyle: 'bold', + footerSpacing: 2, + footerMarginTop: 6, + footerFontColor: '#fff', + footerAlign: 'left', + yPadding: 6, + xPadding: 6, + caretPadding: 2, + caretSize: 5, + cornerRadius: 6, + multiKeyBackground: '#fff', + displayColors: true, + borderColor: 'rgba(0,0,0,0)', + borderWidth: 0, + callbacks: { + // Args are: (tooltipItems, data) + beforeTitle: helpers$1.noop, + title: function(tooltipItems, data) { + var title = ''; + var labels = data.labels; + var labelCount = labels ? labels.length : 0; + + if (tooltipItems.length > 0) { + var item = tooltipItems[0]; + if (item.label) { + title = item.label; + } else if (item.xLabel) { + title = item.xLabel; + } else if (labelCount > 0 && item.index < labelCount) { + title = labels[item.index]; + } + } + + return title; + }, + afterTitle: helpers$1.noop, + + // Args are: (tooltipItems, data) + beforeBody: helpers$1.noop, + + // Args are: (tooltipItem, data) + beforeLabel: helpers$1.noop, + label: function(tooltipItem, data) { + var label = data.datasets[tooltipItem.datasetIndex].label || ''; + + if (label) { + label += ': '; + } + if (!helpers$1.isNullOrUndef(tooltipItem.value)) { + label += tooltipItem.value; + } else { + label += tooltipItem.yLabel; + } + return label; + }, + labelColor: function(tooltipItem, chart) { + var meta = chart.getDatasetMeta(tooltipItem.datasetIndex); + var activeElement = meta.data[tooltipItem.index]; + var view = activeElement._view; + return { + borderColor: view.borderColor, + backgroundColor: view.backgroundColor + }; + }, + labelTextColor: function() { + return this._options.bodyFontColor; + }, + afterLabel: helpers$1.noop, + + // Args are: (tooltipItems, data) + afterBody: helpers$1.noop, + + // Args are: (tooltipItems, data) + beforeFooter: helpers$1.noop, + footer: helpers$1.noop, + afterFooter: helpers$1.noop + } + } +}); + +var positioners = { + /** + * Average mode places the tooltip at the average position of the elements shown + * @function Chart.Tooltip.positioners.average + * @param elements {ChartElement[]} the elements being displayed in the tooltip + * @returns {object} tooltip position + */ + average: function(elements) { + if (!elements.length) { + return false; + } + + var i, len; + var x = 0; + var y = 0; + var count = 0; + + for (i = 0, len = elements.length; i < len; ++i) { + var el = elements[i]; + if (el && el.hasValue()) { + var pos = el.tooltipPosition(); + x += pos.x; + y += pos.y; + ++count; + } + } + + return { + x: x / count, + y: y / count + }; + }, + + /** + * Gets the tooltip position nearest of the item nearest to the event position + * @function Chart.Tooltip.positioners.nearest + * @param elements {Chart.Element[]} the tooltip elements + * @param eventPosition {object} the position of the event in canvas coordinates + * @returns {object} the tooltip position + */ + nearest: function(elements, eventPosition) { + var x = eventPosition.x; + var y = eventPosition.y; + var minDistance = Number.POSITIVE_INFINITY; + var i, len, nearestElement; + + for (i = 0, len = elements.length; i < len; ++i) { + var el = elements[i]; + if (el && el.hasValue()) { + var center = el.getCenterPoint(); + var d = helpers$1.distanceBetweenPoints(eventPosition, center); + + if (d < minDistance) { + minDistance = d; + nearestElement = el; + } + } + } + + if (nearestElement) { + var tp = nearestElement.tooltipPosition(); + x = tp.x; + y = tp.y; + } + + return { + x: x, + y: y + }; + } +}; + +// Helper to push or concat based on if the 2nd parameter is an array or not +function pushOrConcat(base, toPush) { + if (toPush) { + if (helpers$1.isArray(toPush)) { + // base = base.concat(toPush); + Array.prototype.push.apply(base, toPush); + } else { + base.push(toPush); + } + } + + return base; +} + +/** + * Returns array of strings split by newline + * @param {string} value - The value to split by newline. + * @returns {string[]} value if newline present - Returned from String split() method + * @function + */ +function splitNewlines(str) { + if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) { + return str.split('\n'); + } + return str; +} + + +/** + * Private helper to create a tooltip item model + * @param element - the chart element (point, arc, bar) to create the tooltip item for + * @return new tooltip item + */ +function createTooltipItem(element) { + var xScale = element._xScale; + var yScale = element._yScale || element._scale; // handle radar || polarArea charts + var index = element._index; + var datasetIndex = element._datasetIndex; + var controller = element._chart.getDatasetMeta(datasetIndex).controller; + var indexScale = controller._getIndexScale(); + var valueScale = controller._getValueScale(); + + return { + xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '', + yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '', + label: indexScale ? '' + indexScale.getLabelForIndex(index, datasetIndex) : '', + value: valueScale ? '' + valueScale.getLabelForIndex(index, datasetIndex) : '', + index: index, + datasetIndex: datasetIndex, + x: element._model.x, + y: element._model.y + }; +} + +/** + * Helper to get the reset model for the tooltip + * @param tooltipOpts {object} the tooltip options + */ +function getBaseModel(tooltipOpts) { + var globalDefaults = core_defaults.global; + + return { + // Positioning + xPadding: tooltipOpts.xPadding, + yPadding: tooltipOpts.yPadding, + xAlign: tooltipOpts.xAlign, + yAlign: tooltipOpts.yAlign, + + // Drawing direction and text direction + rtl: tooltipOpts.rtl, + textDirection: tooltipOpts.textDirection, + + // Body + bodyFontColor: tooltipOpts.bodyFontColor, + _bodyFontFamily: valueOrDefault$8(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily), + _bodyFontStyle: valueOrDefault$8(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle), + _bodyAlign: tooltipOpts.bodyAlign, + bodyFontSize: valueOrDefault$8(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize), + bodySpacing: tooltipOpts.bodySpacing, + + // Title + titleFontColor: tooltipOpts.titleFontColor, + _titleFontFamily: valueOrDefault$8(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily), + _titleFontStyle: valueOrDefault$8(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle), + titleFontSize: valueOrDefault$8(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize), + _titleAlign: tooltipOpts.titleAlign, + titleSpacing: tooltipOpts.titleSpacing, + titleMarginBottom: tooltipOpts.titleMarginBottom, + + // Footer + footerFontColor: tooltipOpts.footerFontColor, + _footerFontFamily: valueOrDefault$8(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily), + _footerFontStyle: valueOrDefault$8(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle), + footerFontSize: valueOrDefault$8(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize), + _footerAlign: tooltipOpts.footerAlign, + footerSpacing: tooltipOpts.footerSpacing, + footerMarginTop: tooltipOpts.footerMarginTop, + + // Appearance + caretSize: tooltipOpts.caretSize, + cornerRadius: tooltipOpts.cornerRadius, + backgroundColor: tooltipOpts.backgroundColor, + opacity: 0, + legendColorBackground: tooltipOpts.multiKeyBackground, + displayColors: tooltipOpts.displayColors, + borderColor: tooltipOpts.borderColor, + borderWidth: tooltipOpts.borderWidth + }; +} + +/** + * Get the size of the tooltip + */ +function getTooltipSize(tooltip, model) { + var ctx = tooltip._chart.ctx; + + var height = model.yPadding * 2; // Tooltip Padding + var width = 0; + + // Count of all lines in the body + var body = model.body; + var combinedBodyLength = body.reduce(function(count, bodyItem) { + return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length; + }, 0); + combinedBodyLength += model.beforeBody.length + model.afterBody.length; + + var titleLineCount = model.title.length; + var footerLineCount = model.footer.length; + var titleFontSize = model.titleFontSize; + var bodyFontSize = model.bodyFontSize; + var footerFontSize = model.footerFontSize; + + height += titleLineCount * titleFontSize; // Title Lines + height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing + height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin + height += combinedBodyLength * bodyFontSize; // Body Lines + height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing + height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin + height += footerLineCount * (footerFontSize); // Footer Lines + height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing + + // Title width + var widthPadding = 0; + var maxLineWidth = function(line) { + width = Math.max(width, ctx.measureText(line).width + widthPadding); + }; + + ctx.font = helpers$1.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily); + helpers$1.each(model.title, maxLineWidth); + + // Body width + ctx.font = helpers$1.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily); + helpers$1.each(model.beforeBody.concat(model.afterBody), maxLineWidth); + + // Body lines may include some extra width due to the color box + widthPadding = model.displayColors ? (bodyFontSize + 2) : 0; + helpers$1.each(body, function(bodyItem) { + helpers$1.each(bodyItem.before, maxLineWidth); + helpers$1.each(bodyItem.lines, maxLineWidth); + helpers$1.each(bodyItem.after, maxLineWidth); + }); + + // Reset back to 0 + widthPadding = 0; + + // Footer width + ctx.font = helpers$1.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily); + helpers$1.each(model.footer, maxLineWidth); + + // Add padding + width += 2 * model.xPadding; + + return { + width: width, + height: height + }; +} + +/** + * Helper to get the alignment of a tooltip given the size + */ +function determineAlignment(tooltip, size) { + var model = tooltip._model; + var chart = tooltip._chart; + var chartArea = tooltip._chart.chartArea; + var xAlign = 'center'; + var yAlign = 'center'; + + if (model.y < size.height) { + yAlign = 'top'; + } else if (model.y > (chart.height - size.height)) { + yAlign = 'bottom'; + } + + var lf, rf; // functions to determine left, right alignment + var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart + var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges + var midX = (chartArea.left + chartArea.right) / 2; + var midY = (chartArea.top + chartArea.bottom) / 2; + + if (yAlign === 'center') { + lf = function(x) { + return x <= midX; + }; + rf = function(x) { + return x > midX; + }; + } else { + lf = function(x) { + return x <= (size.width / 2); + }; + rf = function(x) { + return x >= (chart.width - (size.width / 2)); + }; + } + + olf = function(x) { + return x + size.width + model.caretSize + model.caretPadding > chart.width; + }; + orf = function(x) { + return x - size.width - model.caretSize - model.caretPadding < 0; + }; + yf = function(y) { + return y <= midY ? 'top' : 'bottom'; + }; + + if (lf(model.x)) { + xAlign = 'left'; + + // Is tooltip too wide and goes over the right side of the chart.? + if (olf(model.x)) { + xAlign = 'center'; + yAlign = yf(model.y); + } + } else if (rf(model.x)) { + xAlign = 'right'; + + // Is tooltip too wide and goes outside left edge of canvas? + if (orf(model.x)) { + xAlign = 'center'; + yAlign = yf(model.y); + } + } + + var opts = tooltip._options; + return { + xAlign: opts.xAlign ? opts.xAlign : xAlign, + yAlign: opts.yAlign ? opts.yAlign : yAlign + }; +} + +/** + * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment + */ +function getBackgroundPoint(vm, size, alignment, chart) { + // Background Position + var x = vm.x; + var y = vm.y; + + var caretSize = vm.caretSize; + var caretPadding = vm.caretPadding; + var cornerRadius = vm.cornerRadius; + var xAlign = alignment.xAlign; + var yAlign = alignment.yAlign; + var paddingAndSize = caretSize + caretPadding; + var radiusAndPadding = cornerRadius + caretPadding; + + if (xAlign === 'right') { + x -= size.width; + } else if (xAlign === 'center') { + x -= (size.width / 2); + if (x + size.width > chart.width) { + x = chart.width - size.width; + } + if (x < 0) { + x = 0; + } + } + + if (yAlign === 'top') { + y += paddingAndSize; + } else if (yAlign === 'bottom') { + y -= size.height + paddingAndSize; + } else { + y -= (size.height / 2); + } + + if (yAlign === 'center') { + if (xAlign === 'left') { + x += paddingAndSize; + } else if (xAlign === 'right') { + x -= paddingAndSize; + } + } else if (xAlign === 'left') { + x -= radiusAndPadding; + } else if (xAlign === 'right') { + x += radiusAndPadding; + } + + return { + x: x, + y: y + }; +} + +function getAlignedX(vm, align) { + return align === 'center' + ? vm.x + vm.width / 2 + : align === 'right' + ? vm.x + vm.width - vm.xPadding + : vm.x + vm.xPadding; +} + +/** + * Helper to build before and after body lines + */ +function getBeforeAfterBodyLines(callback) { + return pushOrConcat([], splitNewlines(callback)); +} + +var exports$4 = core_element.extend({ + initialize: function() { + this._model = getBaseModel(this._options); + this._lastActive = []; + }, + + // Get the title + // Args are: (tooltipItem, data) + getTitle: function() { + var me = this; + var opts = me._options; + var callbacks = opts.callbacks; + + var beforeTitle = callbacks.beforeTitle.apply(me, arguments); + var title = callbacks.title.apply(me, arguments); + var afterTitle = callbacks.afterTitle.apply(me, arguments); + + var lines = []; + lines = pushOrConcat(lines, splitNewlines(beforeTitle)); + lines = pushOrConcat(lines, splitNewlines(title)); + lines = pushOrConcat(lines, splitNewlines(afterTitle)); + + return lines; + }, + + // Args are: (tooltipItem, data) + getBeforeBody: function() { + return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments)); + }, + + // Args are: (tooltipItem, data) + getBody: function(tooltipItems, data) { + var me = this; + var callbacks = me._options.callbacks; + var bodyItems = []; + + helpers$1.each(tooltipItems, function(tooltipItem) { + var bodyItem = { + before: [], + lines: [], + after: [] + }; + pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data))); + pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data)); + pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data))); + + bodyItems.push(bodyItem); + }); + + return bodyItems; + }, + + // Args are: (tooltipItem, data) + getAfterBody: function() { + return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments)); + }, + + // Get the footer and beforeFooter and afterFooter lines + // Args are: (tooltipItem, data) + getFooter: function() { + var me = this; + var callbacks = me._options.callbacks; + + var beforeFooter = callbacks.beforeFooter.apply(me, arguments); + var footer = callbacks.footer.apply(me, arguments); + var afterFooter = callbacks.afterFooter.apply(me, arguments); + + var lines = []; + lines = pushOrConcat(lines, splitNewlines(beforeFooter)); + lines = pushOrConcat(lines, splitNewlines(footer)); + lines = pushOrConcat(lines, splitNewlines(afterFooter)); + + return lines; + }, + + update: function(changed) { + var me = this; + var opts = me._options; + + // Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition + // that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time + // which breaks any animations. + var existingModel = me._model; + var model = me._model = getBaseModel(opts); + var active = me._active; + + var data = me._data; + + // In the case where active.length === 0 we need to keep these at existing values for good animations + var alignment = { + xAlign: existingModel.xAlign, + yAlign: existingModel.yAlign + }; + var backgroundPoint = { + x: existingModel.x, + y: existingModel.y + }; + var tooltipSize = { + width: existingModel.width, + height: existingModel.height + }; + var tooltipPosition = { + x: existingModel.caretX, + y: existingModel.caretY + }; + + var i, len; + + if (active.length) { + model.opacity = 1; + + var labelColors = []; + var labelTextColors = []; + tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition); + + var tooltipItems = []; + for (i = 0, len = active.length; i < len; ++i) { + tooltipItems.push(createTooltipItem(active[i])); + } + + // If the user provided a filter function, use it to modify the tooltip items + if (opts.filter) { + tooltipItems = tooltipItems.filter(function(a) { + return opts.filter(a, data); + }); + } + + // If the user provided a sorting function, use it to modify the tooltip items + if (opts.itemSort) { + tooltipItems = tooltipItems.sort(function(a, b) { + return opts.itemSort(a, b, data); + }); + } + + // Determine colors for boxes + helpers$1.each(tooltipItems, function(tooltipItem) { + labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart)); + labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart)); + }); + + + // Build the Text Lines + model.title = me.getTitle(tooltipItems, data); + model.beforeBody = me.getBeforeBody(tooltipItems, data); + model.body = me.getBody(tooltipItems, data); + model.afterBody = me.getAfterBody(tooltipItems, data); + model.footer = me.getFooter(tooltipItems, data); + + // Initial positioning and colors + model.x = tooltipPosition.x; + model.y = tooltipPosition.y; + model.caretPadding = opts.caretPadding; + model.labelColors = labelColors; + model.labelTextColors = labelTextColors; + + // data points + model.dataPoints = tooltipItems; + + // We need to determine alignment of the tooltip + tooltipSize = getTooltipSize(this, model); + alignment = determineAlignment(this, tooltipSize); + // Final Size and Position + backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart); + } else { + model.opacity = 0; + } + + model.xAlign = alignment.xAlign; + model.yAlign = alignment.yAlign; + model.x = backgroundPoint.x; + model.y = backgroundPoint.y; + model.width = tooltipSize.width; + model.height = tooltipSize.height; + + // Point where the caret on the tooltip points to + model.caretX = tooltipPosition.x; + model.caretY = tooltipPosition.y; + + me._model = model; + + if (changed && opts.custom) { + opts.custom.call(me, model); + } + + return me; + }, + + drawCaret: function(tooltipPoint, size) { + var ctx = this._chart.ctx; + var vm = this._view; + var caretPosition = this.getCaretPosition(tooltipPoint, size, vm); + + ctx.lineTo(caretPosition.x1, caretPosition.y1); + ctx.lineTo(caretPosition.x2, caretPosition.y2); + ctx.lineTo(caretPosition.x3, caretPosition.y3); + }, + getCaretPosition: function(tooltipPoint, size, vm) { + var x1, x2, x3, y1, y2, y3; + var caretSize = vm.caretSize; + var cornerRadius = vm.cornerRadius; + var xAlign = vm.xAlign; + var yAlign = vm.yAlign; + var ptX = tooltipPoint.x; + var ptY = tooltipPoint.y; + var width = size.width; + var height = size.height; + + if (yAlign === 'center') { + y2 = ptY + (height / 2); + + if (xAlign === 'left') { + x1 = ptX; + x2 = x1 - caretSize; + x3 = x1; + + y1 = y2 + caretSize; + y3 = y2 - caretSize; + } else { + x1 = ptX + width; + x2 = x1 + caretSize; + x3 = x1; + + y1 = y2 - caretSize; + y3 = y2 + caretSize; + } + } else { + if (xAlign === 'left') { + x2 = ptX + cornerRadius + (caretSize); + x1 = x2 - caretSize; + x3 = x2 + caretSize; + } else if (xAlign === 'right') { + x2 = ptX + width - cornerRadius - caretSize; + x1 = x2 - caretSize; + x3 = x2 + caretSize; + } else { + x2 = vm.caretX; + x1 = x2 - caretSize; + x3 = x2 + caretSize; + } + if (yAlign === 'top') { + y1 = ptY; + y2 = y1 - caretSize; + y3 = y1; + } else { + y1 = ptY + height; + y2 = y1 + caretSize; + y3 = y1; + // invert drawing order + var tmp = x3; + x3 = x1; + x1 = tmp; + } + } + return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3}; + }, + + drawTitle: function(pt, vm, ctx) { + var title = vm.title; + var length = title.length; + var titleFontSize, titleSpacing, i; + + if (length) { + var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width); + + pt.x = getAlignedX(vm, vm._titleAlign); + + ctx.textAlign = rtlHelper.textAlign(vm._titleAlign); + ctx.textBaseline = 'middle'; + + titleFontSize = vm.titleFontSize; + titleSpacing = vm.titleSpacing; + + ctx.fillStyle = vm.titleFontColor; + ctx.font = helpers$1.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily); + + for (i = 0; i < length; ++i) { + ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFontSize / 2); + pt.y += titleFontSize + titleSpacing; // Line Height and spacing + + if (i + 1 === length) { + pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing + } + } + } + }, + + drawBody: function(pt, vm, ctx) { + var bodyFontSize = vm.bodyFontSize; + var bodySpacing = vm.bodySpacing; + var bodyAlign = vm._bodyAlign; + var body = vm.body; + var drawColorBoxes = vm.displayColors; + var xLinePadding = 0; + var colorX = drawColorBoxes ? getAlignedX(vm, 'left') : 0; + + var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width); + + var fillLineOfText = function(line) { + ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyFontSize / 2); + pt.y += bodyFontSize + bodySpacing; + }; + + var bodyItem, textColor, labelColors, lines, i, j, ilen, jlen; + var bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign); + + ctx.textAlign = bodyAlign; + ctx.textBaseline = 'middle'; + ctx.font = helpers$1.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily); + + pt.x = getAlignedX(vm, bodyAlignForCalculation); + + // Before body lines + ctx.fillStyle = vm.bodyFontColor; + helpers$1.each(vm.beforeBody, fillLineOfText); + + xLinePadding = drawColorBoxes && bodyAlignForCalculation !== 'right' + ? bodyAlign === 'center' ? (bodyFontSize / 2 + 1) : (bodyFontSize + 2) + : 0; + + // Draw body lines now + for (i = 0, ilen = body.length; i < ilen; ++i) { + bodyItem = body[i]; + textColor = vm.labelTextColors[i]; + labelColors = vm.labelColors[i]; + + ctx.fillStyle = textColor; + helpers$1.each(bodyItem.before, fillLineOfText); + + lines = bodyItem.lines; + for (j = 0, jlen = lines.length; j < jlen; ++j) { + // Draw Legend-like boxes if needed + if (drawColorBoxes) { + var rtlColorX = rtlHelper.x(colorX); + + // Fill a white rect so that colours merge nicely if the opacity is < 1 + ctx.fillStyle = vm.legendColorBackground; + ctx.fillRect(rtlHelper.leftForLtr(rtlColorX, bodyFontSize), pt.y, bodyFontSize, bodyFontSize); + + // Border + ctx.lineWidth = 1; + ctx.strokeStyle = labelColors.borderColor; + ctx.strokeRect(rtlHelper.leftForLtr(rtlColorX, bodyFontSize), pt.y, bodyFontSize, bodyFontSize); + + // Inner square + ctx.fillStyle = labelColors.backgroundColor; + ctx.fillRect(rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), bodyFontSize - 2), pt.y + 1, bodyFontSize - 2, bodyFontSize - 2); + ctx.fillStyle = textColor; + } + + fillLineOfText(lines[j]); + } + + helpers$1.each(bodyItem.after, fillLineOfText); + } + + // Reset back to 0 for after body + xLinePadding = 0; + + // After body lines + helpers$1.each(vm.afterBody, fillLineOfText); + pt.y -= bodySpacing; // Remove last body spacing + }, + + drawFooter: function(pt, vm, ctx) { + var footer = vm.footer; + var length = footer.length; + var footerFontSize, i; + + if (length) { + var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width); + + pt.x = getAlignedX(vm, vm._footerAlign); + pt.y += vm.footerMarginTop; + + ctx.textAlign = rtlHelper.textAlign(vm._footerAlign); + ctx.textBaseline = 'middle'; + + footerFontSize = vm.footerFontSize; + + ctx.fillStyle = vm.footerFontColor; + ctx.font = helpers$1.fontString(footerFontSize, vm._footerFontStyle, vm._footerFontFamily); + + for (i = 0; i < length; ++i) { + ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFontSize / 2); + pt.y += footerFontSize + vm.footerSpacing; + } + } + }, + + drawBackground: function(pt, vm, ctx, tooltipSize) { + ctx.fillStyle = vm.backgroundColor; + ctx.strokeStyle = vm.borderColor; + ctx.lineWidth = vm.borderWidth; + var xAlign = vm.xAlign; + var yAlign = vm.yAlign; + var x = pt.x; + var y = pt.y; + var width = tooltipSize.width; + var height = tooltipSize.height; + var radius = vm.cornerRadius; + + ctx.beginPath(); + ctx.moveTo(x + radius, y); + if (yAlign === 'top') { + this.drawCaret(pt, tooltipSize); + } + ctx.lineTo(x + width - radius, y); + ctx.quadraticCurveTo(x + width, y, x + width, y + radius); + if (yAlign === 'center' && xAlign === 'right') { + this.drawCaret(pt, tooltipSize); + } + ctx.lineTo(x + width, y + height - radius); + ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height); + if (yAlign === 'bottom') { + this.drawCaret(pt, tooltipSize); + } + ctx.lineTo(x + radius, y + height); + ctx.quadraticCurveTo(x, y + height, x, y + height - radius); + if (yAlign === 'center' && xAlign === 'left') { + this.drawCaret(pt, tooltipSize); + } + ctx.lineTo(x, y + radius); + ctx.quadraticCurveTo(x, y, x + radius, y); + ctx.closePath(); + + ctx.fill(); + + if (vm.borderWidth > 0) { + ctx.stroke(); + } + }, + + draw: function() { + var ctx = this._chart.ctx; + var vm = this._view; + + if (vm.opacity === 0) { + return; + } + + var tooltipSize = { + width: vm.width, + height: vm.height + }; + var pt = { + x: vm.x, + y: vm.y + }; + + // IE11/Edge does not like very small opacities, so snap to 0 + var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity; + + // Truthy/falsey value for empty tooltip + var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length; + + if (this._options.enabled && hasTooltipContent) { + ctx.save(); + ctx.globalAlpha = opacity; + + // Draw Background + this.drawBackground(pt, vm, ctx, tooltipSize); + + // Draw Title, Body, and Footer + pt.y += vm.yPadding; + + helpers$1.rtl.overrideTextDirection(ctx, vm.textDirection); + + // Titles + this.drawTitle(pt, vm, ctx); + + // Body + this.drawBody(pt, vm, ctx); + + // Footer + this.drawFooter(pt, vm, ctx); + + helpers$1.rtl.restoreTextDirection(ctx, vm.textDirection); + + ctx.restore(); + } + }, + + /** + * Handle an event + * @private + * @param {IEvent} event - The event to handle + * @returns {boolean} true if the tooltip changed + */ + handleEvent: function(e) { + var me = this; + var options = me._options; + var changed = false; + + me._lastActive = me._lastActive || []; + + // Find Active Elements for tooltips + if (e.type === 'mouseout') { + me._active = []; + } else { + me._active = me._chart.getElementsAtEventForMode(e, options.mode, options); + if (options.reverse) { + me._active.reverse(); + } + } + + // Remember Last Actives + changed = !helpers$1.arrayEquals(me._active, me._lastActive); + + // Only handle target event on tooltip change + if (changed) { + me._lastActive = me._active; + + if (options.enabled || options.custom) { + me._eventPosition = { + x: e.x, + y: e.y + }; + + me.update(true); + me.pivot(); + } + } + + return changed; + } +}); + +/** + * @namespace Chart.Tooltip.positioners + */ +var positioners_1 = positioners; + +var core_tooltip = exports$4; +core_tooltip.positioners = positioners_1; - lineCount = helpers$1.isArray(opts.text) ? opts.text.length : 1; - textSize = lineCount * helpers$1.options._parseFont(opts).lineHeight + opts.padding * 2; +var valueOrDefault$9 = helpers$1.valueOrDefault; + +core_defaults._set('global', { + elements: {}, + events: [ + 'mousemove', + 'mouseout', + 'click', + 'touchstart', + 'touchmove' + ], + hover: { + onHover: null, + mode: 'nearest', + intersect: true, + animationDuration: 400 + }, + onClick: null, + maintainAspectRatio: true, + responsive: true, + responsiveAnimationDuration: 0 +}); + +/** + * Recursively merge the given config objects representing the `scales` option + * by incorporating scale defaults in `xAxes` and `yAxes` array items, then + * returns a deep copy of the result, thus doesn't alter inputs. + */ +function mergeScaleConfig(/* config objects ... */) { + return helpers$1.merge(Object.create(null), [].slice.call(arguments), { + merger: function(key, target, source, options) { + if (key === 'xAxes' || key === 'yAxes') { + var slen = source[key].length; + var i, type, scale; + + if (!target[key]) { + target[key] = []; + } + + for (i = 0; i < slen; ++i) { + scale = source[key][i]; + type = valueOrDefault$9(scale.type, key === 'xAxes' ? 'category' : 'linear'); + + if (i >= target[key].length) { + target[key].push({}); + } + + if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) { + // new/untyped scale or type changed: let's apply the new defaults + // then merge source scale to correctly overwrite the defaults. + helpers$1.merge(target[key][i], [core_scaleService.getScaleDefaults(type), scale]); + } else { + // scales type are the same + helpers$1.merge(target[key][i], scale); + } + } + } else { + helpers$1._merger(key, target, source, options); + } + } + }); +} + +/** + * Recursively merge the given config objects as the root options by handling + * default scale options for the `scales` and `scale` properties, then returns + * a deep copy of the result, thus doesn't alter inputs. + */ +function mergeConfig(/* config objects ... */) { + return helpers$1.merge(Object.create(null), [].slice.call(arguments), { + merger: function(key, target, source, options) { + var tval = target[key] || Object.create(null); + var sval = source[key]; + + if (key === 'scales') { + // scale config merging is complex. Add our own function here for that + target[key] = mergeScaleConfig(tval, sval); + } else if (key === 'scale') { + // used in polar area & radar charts since there is only one scale + target[key] = helpers$1.merge(tval, [core_scaleService.getScaleDefaults(sval.type), sval]); + } else { + helpers$1._merger(key, target, source, options); + } + } + }); +} + +function initConfig(config) { + config = config || Object.create(null); + + // Do NOT use mergeConfig for the data object because this method merges arrays + // and so would change references to labels and datasets, preventing data updates. + var data = config.data = config.data || {}; + data.datasets = data.datasets || []; + data.labels = data.labels || []; + + config.options = mergeConfig( + core_defaults.global, + core_defaults[config.type], + config.options || {}); + + return config; +} + +function updateConfig(chart) { + var newOptions = chart.options; + + helpers$1.each(chart.scales, function(scale) { + core_layouts.removeBox(chart, scale); + }); + + newOptions = mergeConfig( + core_defaults.global, + core_defaults[chart.config.type], + newOptions); + + chart.options = chart.config.options = newOptions; + chart.ensureScalesHaveIDs(); + chart.buildOrUpdateScales(); + + // Tooltip + chart.tooltip._options = newOptions.tooltips; + chart.tooltip.initialize(); +} + +function nextAvailableScaleId(axesOpts, prefix, index) { + var id; + var hasId = function(obj) { + return obj.id === id; + }; + + do { + id = prefix + index++; + } while (helpers$1.findIndex(axesOpts, hasId) >= 0); + + return id; +} + +function positionIsHorizontal(position) { + return position === 'top' || position === 'bottom'; +} + +function compare2Level(l1, l2) { + return function(a, b) { + return a[l1] === b[l1] + ? a[l2] - b[l2] + : a[l1] - b[l1]; + }; +} + +var Chart = function(item, config) { + this.construct(item, config); + return this; +}; + +helpers$1.extend(Chart.prototype, /** @lends Chart */ { + /** + * @private + */ + construct: function(item, config) { + var me = this; + + config = initConfig(config); + + var context = platform.acquireContext(item, config); + var canvas = context && context.canvas; + var height = canvas && canvas.height; + var width = canvas && canvas.width; + + me.id = helpers$1.uid(); + me.ctx = context; + me.canvas = canvas; + me.config = config; + me.width = width; + me.height = height; + me.aspectRatio = height ? width / height : null; + me.options = config.options; + me._bufferedRender = false; + me._layers = []; + + /** + * Provided for backward compatibility, Chart and Chart.Controller have been merged, + * the "instance" still need to be defined since it might be called from plugins. + * @prop Chart#chart + * @deprecated since version 2.6.0 + * @todo remove at version 3 + * @private + */ + me.chart = me; + me.controller = me; // chart.chart.controller #inception + + // Add the chart instance to the global namespace + Chart.instances[me.id] = me; + + // Define alias to the config data: `chart.data === chart.config.data` + Object.defineProperty(me, 'data', { + get: function() { + return me.config.data; + }, + set: function(value) { + me.config.data = value; + } + }); + + if (!context || !canvas) { + // The given item is not a compatible context2d element, let's return before finalizing + // the chart initialization but after setting basic chart / controller properties that + // can help to figure out that the chart is not valid (e.g chart.canvas !== null); + // https://github.com/chartjs/Chart.js/issues/2807 + console.error("Failed to create chart: can't acquire context from the given item"); + return; + } + + me.initialize(); + me.update(); + }, + + /** + * @private + */ + initialize: function() { + var me = this; + + // Before init plugin notification + core_plugins.notify(me, 'beforeInit'); + + helpers$1.retinaScale(me, me.options.devicePixelRatio); + + me.bindEvents(); + + if (me.options.responsive) { + // Initial resize before chart draws (must be silent to preserve initial animations). + me.resize(true); + } + + me.initToolTip(); + + // After init plugin notification + core_plugins.notify(me, 'afterInit'); + + return me; + }, + + clear: function() { + helpers$1.canvas.clear(this); + return this; + }, + + stop: function() { + // Stops any current animation loop occurring + core_animations.cancelAnimation(this); + return this; + }, + + resize: function(silent) { + var me = this; + var options = me.options; + var canvas = me.canvas; + var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null; + + // the canvas render width and height will be casted to integers so make sure that + // the canvas display style uses the same integer values to avoid blurring effect. + + // Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed + var newWidth = Math.max(0, Math.floor(helpers$1.getMaximumWidth(canvas))); + var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers$1.getMaximumHeight(canvas))); + + if (me.width === newWidth && me.height === newHeight) { + return; + } + + canvas.width = me.width = newWidth; + canvas.height = me.height = newHeight; + canvas.style.width = newWidth + 'px'; + canvas.style.height = newHeight + 'px'; + + helpers$1.retinaScale(me, options.devicePixelRatio); + + if (!silent) { + // Notify any plugins about the resize + var newSize = {width: newWidth, height: newHeight}; + core_plugins.notify(me, 'resize', [newSize]); + + // Notify of resize + if (options.onResize) { + options.onResize(me, newSize); + } + + me.stop(); + me.update({ + duration: options.responsiveAnimationDuration + }); + } + }, + + ensureScalesHaveIDs: function() { + var options = this.options; + var scalesOptions = options.scales || {}; + var scaleOptions = options.scale; + + helpers$1.each(scalesOptions.xAxes, function(xAxisOptions, index) { + if (!xAxisOptions.id) { + xAxisOptions.id = nextAvailableScaleId(scalesOptions.xAxes, 'x-axis-', index); + } + }); + + helpers$1.each(scalesOptions.yAxes, function(yAxisOptions, index) { + if (!yAxisOptions.id) { + yAxisOptions.id = nextAvailableScaleId(scalesOptions.yAxes, 'y-axis-', index); + } + }); + + if (scaleOptions) { + scaleOptions.id = scaleOptions.id || 'scale'; + } + }, + + /** + * Builds a map of scale ID to scale object for future lookup. + */ + buildOrUpdateScales: function() { + var me = this; + var options = me.options; + var scales = me.scales || {}; + var items = []; + var updated = Object.keys(scales).reduce(function(obj, id) { + obj[id] = false; + return obj; + }, {}); + + if (options.scales) { + items = items.concat( + (options.scales.xAxes || []).map(function(xAxisOptions) { + return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'}; + }), + (options.scales.yAxes || []).map(function(yAxisOptions) { + return {options: yAxisOptions, dtype: 'linear', dposition: 'left'}; + }) + ); + } + + if (options.scale) { + items.push({ + options: options.scale, + dtype: 'radialLinear', + isDefault: true, + dposition: 'chartArea' + }); + } + + helpers$1.each(items, function(item) { + var scaleOptions = item.options; + var id = scaleOptions.id; + var scaleType = valueOrDefault$9(scaleOptions.type, item.dtype); + + if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) { + scaleOptions.position = item.dposition; + } + + updated[id] = true; + var scale = null; + if (id in scales && scales[id].type === scaleType) { + scale = scales[id]; + scale.options = scaleOptions; + scale.ctx = me.ctx; + scale.chart = me; + } else { + var scaleClass = core_scaleService.getScaleConstructor(scaleType); + if (!scaleClass) { + return; + } + scale = new scaleClass({ + id: id, + type: scaleType, + options: scaleOptions, + ctx: me.ctx, + chart: me + }); + scales[scale.id] = scale; + } + + scale.mergeTicksOptions(); + + // TODO(SB): I think we should be able to remove this custom case (options.scale) + // and consider it as a regular scale part of the "scales"" map only! This would + // make the logic easier and remove some useless? custom code. + if (item.isDefault) { + me.scale = scale; + } + }); + // clear up discarded scales + helpers$1.each(updated, function(hasUpdated, id) { + if (!hasUpdated) { + delete scales[id]; + } + }); + + me.scales = scales; + + core_scaleService.addScalesToLayout(this); + }, + + buildOrUpdateControllers: function() { + var me = this; + var newControllers = []; + var datasets = me.data.datasets; + var i, ilen; + + for (i = 0, ilen = datasets.length; i < ilen; i++) { + var dataset = datasets[i]; + var meta = me.getDatasetMeta(i); + var type = dataset.type || me.config.type; + + if (meta.type && meta.type !== type) { + me.destroyDatasetMeta(i); + meta = me.getDatasetMeta(i); + } + meta.type = type; + meta.order = dataset.order || 0; + meta.index = i; + + if (meta.controller) { + meta.controller.updateIndex(i); + meta.controller.linkScales(); + } else { + var ControllerClass = controllers[meta.type]; + if (ControllerClass === undefined) { + throw new Error('"' + meta.type + '" is not a chart type.'); + } + + meta.controller = new ControllerClass(me, i); + newControllers.push(meta.controller); + } + } + + return newControllers; + }, + + /** + * Reset the elements of all datasets + * @private + */ + resetElements: function() { + var me = this; + helpers$1.each(me.data.datasets, function(dataset, datasetIndex) { + me.getDatasetMeta(datasetIndex).controller.reset(); + }, me); + }, + + /** + * Resets the chart back to it's state before the initial animation + */ + reset: function() { + this.resetElements(); + this.tooltip.initialize(); + }, + + update: function(config) { + var me = this; + var i, ilen; + + if (!config || typeof config !== 'object') { + // backwards compatibility + config = { + duration: config, + lazy: arguments[1] + }; + } + + updateConfig(me); + + // plugins options references might have change, let's invalidate the cache + // https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167 + core_plugins._invalidate(me); + + if (core_plugins.notify(me, 'beforeUpdate') === false) { + return; + } + + // In case the entire data object changed + me.tooltip._data = me.data; + + // Make sure dataset controllers are updated and new controllers are reset + var newControllers = me.buildOrUpdateControllers(); + + // Make sure all dataset controllers have correct meta data counts + for (i = 0, ilen = me.data.datasets.length; i < ilen; i++) { + me.getDatasetMeta(i).controller.buildOrUpdateElements(); + } + + me.updateLayout(); + + // Can only reset the new controllers after the scales have been updated + if (me.options.animation && me.options.animation.duration) { + helpers$1.each(newControllers, function(controller) { + controller.reset(); + }); + } + + me.updateDatasets(); + + // Need to reset tooltip in case it is displayed with elements that are removed + // after update. + me.tooltip.initialize(); + + // Last active contains items that were previously in the tooltip. + // When we reset the tooltip, we need to clear it + me.lastActive = []; + + // Do this before render so that any plugins that need final scale updates can use it + core_plugins.notify(me, 'afterUpdate'); + + me._layers.sort(compare2Level('z', '_idx')); + + if (me._bufferedRender) { + me._bufferedRequest = { + duration: config.duration, + easing: config.easing, + lazy: config.lazy + }; + } else { + me.render(config); + } + }, + + /** + * Updates the chart layout unless a plugin returns `false` to the `beforeLayout` + * hook, in which case, plugins will not be called on `afterLayout`. + * @private + */ + updateLayout: function() { + var me = this; + + if (core_plugins.notify(me, 'beforeLayout') === false) { + return; + } + + core_layouts.update(this, this.width, this.height); + + me._layers = []; + helpers$1.each(me.boxes, function(box) { + // _configure is called twice, once in core.scale.update and once here. + // Here the boxes are fully updated and at their final positions. + if (box._configure) { + box._configure(); + } + me._layers.push.apply(me._layers, box._layers()); + }, me); + + me._layers.forEach(function(item, index) { + item._idx = index; + }); + + /** + * Provided for backward compatibility, use `afterLayout` instead. + * @method IPlugin#afterScaleUpdate + * @deprecated since version 2.5.0 + * @todo remove at version 3 + * @private + */ + core_plugins.notify(me, 'afterScaleUpdate'); + core_plugins.notify(me, 'afterLayout'); + }, + + /** + * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate` + * hook, in which case, plugins will not be called on `afterDatasetsUpdate`. + * @private + */ + updateDatasets: function() { + var me = this; + + if (core_plugins.notify(me, 'beforeDatasetsUpdate') === false) { + return; + } + + for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { + me.updateDataset(i); + } + + core_plugins.notify(me, 'afterDatasetsUpdate'); + }, + + /** + * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate` + * hook, in which case, plugins will not be called on `afterDatasetUpdate`. + * @private + */ + updateDataset: function(index) { + var me = this; + var meta = me.getDatasetMeta(index); + var args = { + meta: meta, + index: index + }; + + if (core_plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) { + return; + } + + meta.controller._update(); + + core_plugins.notify(me, 'afterDatasetUpdate', [args]); + }, + + render: function(config) { + var me = this; + + if (!config || typeof config !== 'object') { + // backwards compatibility + config = { + duration: config, + lazy: arguments[1] + }; + } + + var animationOptions = me.options.animation; + var duration = valueOrDefault$9(config.duration, animationOptions && animationOptions.duration); + var lazy = config.lazy; + + if (core_plugins.notify(me, 'beforeRender') === false) { + return; + } + + var onComplete = function(animation) { + core_plugins.notify(me, 'afterRender'); + helpers$1.callback(animationOptions && animationOptions.onComplete, [animation], me); + }; + + if (animationOptions && duration) { + var animation = new core_animation({ + numSteps: duration / 16.66, // 60 fps + easing: config.easing || animationOptions.easing, + + render: function(chart, animationObject) { + var easingFunction = helpers$1.easing.effects[animationObject.easing]; + var currentStep = animationObject.currentStep; + var stepDecimal = currentStep / animationObject.numSteps; + + chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep); + }, + + onAnimationProgress: animationOptions.onProgress, + onAnimationComplete: onComplete + }); + + core_animations.addAnimation(me, animation, duration, lazy); + } else { + me.draw(); + + // See https://github.com/chartjs/Chart.js/issues/3781 + onComplete(new core_animation({numSteps: 0, chart: me})); + } + + return me; + }, + + draw: function(easingValue) { + var me = this; + var i, layers; + + me.clear(); + + if (helpers$1.isNullOrUndef(easingValue)) { + easingValue = 1; + } + + me.transition(easingValue); + + if (me.width <= 0 || me.height <= 0) { + return; + } + + if (core_plugins.notify(me, 'beforeDraw', [easingValue]) === false) { + return; + } + + // Because of plugin hooks (before/afterDatasetsDraw), datasets can't + // currently be part of layers. Instead, we draw + // layers <= 0 before(default, backward compat), and the rest after + layers = me._layers; + for (i = 0; i < layers.length && layers[i].z <= 0; ++i) { + layers[i].draw(me.chartArea); + } + + me.drawDatasets(easingValue); + + // Rest of layers + for (; i < layers.length; ++i) { + layers[i].draw(me.chartArea); + } + + me._drawTooltip(easingValue); + + core_plugins.notify(me, 'afterDraw', [easingValue]); + }, + + /** + * @private + */ + transition: function(easingValue) { + var me = this; + + for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) { + if (me.isDatasetVisible(i)) { + me.getDatasetMeta(i).controller.transition(easingValue); + } + } + + me.tooltip.transition(easingValue); + }, + + /** + * @private + */ + _getSortedDatasetMetas: function(filterVisible) { + var me = this; + var datasets = me.data.datasets || []; + var result = []; + var i, ilen; + + for (i = 0, ilen = datasets.length; i < ilen; ++i) { + if (!filterVisible || me.isDatasetVisible(i)) { + result.push(me.getDatasetMeta(i)); + } + } + + result.sort(compare2Level('order', 'index')); + + return result; + }, + + /** + * @private + */ + _getSortedVisibleDatasetMetas: function() { + return this._getSortedDatasetMetas(true); + }, + + /** + * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw` + * hook, in which case, plugins will not be called on `afterDatasetsDraw`. + * @private + */ + drawDatasets: function(easingValue) { + var me = this; + var metasets, i; + + if (core_plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) { + return; + } + + metasets = me._getSortedVisibleDatasetMetas(); + for (i = metasets.length - 1; i >= 0; --i) { + me.drawDataset(metasets[i], easingValue); + } + + core_plugins.notify(me, 'afterDatasetsDraw', [easingValue]); + }, + + /** + * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw` + * hook, in which case, plugins will not be called on `afterDatasetDraw`. + * @private + */ + drawDataset: function(meta, easingValue) { + var me = this; + var args = { + meta: meta, + index: meta.index, + easingValue: easingValue + }; + + if (core_plugins.notify(me, 'beforeDatasetDraw', [args]) === false) { + return; + } + + meta.controller.draw(easingValue); + + core_plugins.notify(me, 'afterDatasetDraw', [args]); + }, + + /** + * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw` + * hook, in which case, plugins will not be called on `afterTooltipDraw`. + * @private + */ + _drawTooltip: function(easingValue) { + var me = this; + var tooltip = me.tooltip; + var args = { + tooltip: tooltip, + easingValue: easingValue + }; + + if (core_plugins.notify(me, 'beforeTooltipDraw', [args]) === false) { + return; + } + + tooltip.draw(); + + core_plugins.notify(me, 'afterTooltipDraw', [args]); + }, + + /** + * Get the single element that was clicked on + * @return An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw + */ + getElementAtEvent: function(e) { + return core_interaction.modes.single(this, e); + }, + + getElementsAtEvent: function(e) { + return core_interaction.modes.label(this, e, {intersect: true}); + }, + + getElementsAtXAxis: function(e) { + return core_interaction.modes['x-axis'](this, e, {intersect: true}); + }, + + getElementsAtEventForMode: function(e, mode, options) { + var method = core_interaction.modes[mode]; + if (typeof method === 'function') { + return method(this, e, options); + } + + return []; + }, + + getDatasetAtEvent: function(e) { + return core_interaction.modes.dataset(this, e, {intersect: true}); + }, + + getDatasetMeta: function(datasetIndex) { + var me = this; + var dataset = me.data.datasets[datasetIndex]; + if (!dataset._meta) { + dataset._meta = {}; + } + + var meta = dataset._meta[me.id]; + if (!meta) { + meta = dataset._meta[me.id] = { + type: null, + data: [], + dataset: null, + controller: null, + hidden: null, // See isDatasetVisible() comment + xAxisID: null, + yAxisID: null, + order: dataset.order || 0, + index: datasetIndex + }; + } + + return meta; + }, + + getVisibleDatasetCount: function() { + var count = 0; + for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) { + if (this.isDatasetVisible(i)) { + count++; + } + } + return count; + }, + + isDatasetVisible: function(datasetIndex) { + var meta = this.getDatasetMeta(datasetIndex); + + // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false, + // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned. + return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden; + }, + + generateLegend: function() { + return this.options.legendCallback(this); + }, + + /** + * @private + */ + destroyDatasetMeta: function(datasetIndex) { + var id = this.id; + var dataset = this.data.datasets[datasetIndex]; + var meta = dataset._meta && dataset._meta[id]; + + if (meta) { + meta.controller.destroy(); + delete dataset._meta[id]; + } + }, + + destroy: function() { + var me = this; + var canvas = me.canvas; + var i, ilen; + + me.stop(); + + // dataset controllers need to cleanup associated data + for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { + me.destroyDatasetMeta(i); + } + + if (canvas) { + me.unbindEvents(); + helpers$1.canvas.clear(me); + platform.releaseContext(me.ctx); + me.canvas = null; + me.ctx = null; + } + + core_plugins.notify(me, 'destroy'); + + delete Chart.instances[me.id]; + }, + + toBase64Image: function() { + return this.canvas.toDataURL.apply(this.canvas, arguments); + }, + + initToolTip: function() { + var me = this; + me.tooltip = new core_tooltip({ + _chart: me, + _chartInstance: me, // deprecated, backward compatibility + _data: me.data, + _options: me.options.tooltips + }, me); + }, + + /** + * @private + */ + bindEvents: function() { + var me = this; + var listeners = me._listeners = {}; + var listener = function() { + me.eventHandler.apply(me, arguments); + }; + + helpers$1.each(me.options.events, function(type) { + platform.addEventListener(me, type, listener); + listeners[type] = listener; + }); + + // Elements used to detect size change should not be injected for non responsive charts. + // See https://github.com/chartjs/Chart.js/issues/2210 + if (me.options.responsive) { + listener = function() { + me.resize(); + }; + + platform.addEventListener(me, 'resize', listener); + listeners.resize = listener; + } + }, + + /** + * @private + */ + unbindEvents: function() { + var me = this; + var listeners = me._listeners; + if (!listeners) { + return; + } + + delete me._listeners; + helpers$1.each(listeners, function(listener, type) { + platform.removeEventListener(me, type, listener); + }); + }, + + updateHoverStyle: function(elements, mode, enabled) { + var prefix = enabled ? 'set' : 'remove'; + var element, i, ilen; + + for (i = 0, ilen = elements.length; i < ilen; ++i) { + element = elements[i]; + if (element) { + this.getDatasetMeta(element._datasetIndex).controller[prefix + 'HoverStyle'](element); + } + } + + if (mode === 'dataset') { + this.getDatasetMeta(elements[0]._datasetIndex).controller['_' + prefix + 'DatasetHoverStyle'](); + } + }, + + /** + * @private + */ + eventHandler: function(e) { + var me = this; + var tooltip = me.tooltip; + + if (core_plugins.notify(me, 'beforeEvent', [e]) === false) { + return; + } + + // Buffer any update calls so that renders do not occur + me._bufferedRender = true; + me._bufferedRequest = null; + + var changed = me.handleEvent(e); + // for smooth tooltip animations issue #4989 + // the tooltip should be the source of change + // Animation check workaround: + // tooltip._start will be null when tooltip isn't animating + if (tooltip) { + changed = tooltip._start + ? tooltip.handleEvent(e) + : changed | tooltip.handleEvent(e); + } + + core_plugins.notify(me, 'afterEvent', [e]); + + var bufferedRequest = me._bufferedRequest; + if (bufferedRequest) { + // If we have an update that was triggered, we need to do a normal render + me.render(bufferedRequest); + } else if (changed && !me.animating) { + // If entering, leaving, or changing elements, animate the change via pivot + me.stop(); + + // We only need to render at this point. Updating will cause scales to be + // recomputed generating flicker & using more memory than necessary. + me.render({ + duration: me.options.hover.animationDuration, + lazy: true + }); + } + + me._bufferedRender = false; + me._bufferedRequest = null; + + return me; + }, + + /** + * Handle an event + * @private + * @param {IEvent} event the event to handle + * @return {boolean} true if the chart needs to re-render + */ + handleEvent: function(e) { + var me = this; + var options = me.options || {}; + var hoverOptions = options.hover; + var changed = false; + + me.lastActive = me.lastActive || []; + + // Find Active Elements for hover and tooltips + if (e.type === 'mouseout') { + me.active = []; + } else { + me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions); + } + + // Invoke onHover hook + // Need to call with native event here to not break backwards compatibility + helpers$1.callback(options.onHover || options.hover.onHover, [e.native, me.active], me); + + if (e.type === 'mouseup' || e.type === 'click') { + if (options.onClick) { + // Use e.native here for backwards compatibility + options.onClick.call(me, e.native, me.active); + } + } + + // Remove styling for last active (even if it may still be active) + if (me.lastActive.length) { + me.updateHoverStyle(me.lastActive, hoverOptions.mode, false); + } + + // Built in hover styling + if (me.active.length && hoverOptions.mode) { + me.updateHoverStyle(me.active, hoverOptions.mode, true); + } + + changed = !helpers$1.arrayEquals(me.active, me.lastActive); + + // Remember Last Actives + me.lastActive = me.active; + + return changed; + } +}); + +/** + * NOTE(SB) We actually don't use this container anymore but we need to keep it + * for backward compatibility. Though, it can still be useful for plugins that + * would need to work on multiple charts?! + */ +Chart.instances = {}; + +var core_controller = Chart; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart instead. + * @class Chart.Controller + * @deprecated since version 2.6 + * @todo remove at version 3 + * @private + */ +Chart.Controller = Chart; + +/** + * Provided for backward compatibility, not available anymore. + * @namespace Chart + * @deprecated since version 2.8 + * @todo remove at version 3 + * @private + */ +Chart.types = {}; + +/** + * Provided for backward compatibility, not available anymore. + * @namespace Chart.helpers.configMerge + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ +helpers$1.configMerge = mergeConfig; + +/** + * Provided for backward compatibility, not available anymore. + * @namespace Chart.helpers.scaleMerge + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ +helpers$1.scaleMerge = mergeScaleConfig; - me.width = minSize.width = isHorizontal ? me.maxWidth : textSize; - me.height = minSize.height = isHorizontal ? textSize : me.maxHeight; - }, - afterFit: noop$2, +var core_helpers = function() { + + // -- Basic js utility methods + + helpers$1.where = function(collection, filterCallback) { + if (helpers$1.isArray(collection) && Array.prototype.filter) { + return collection.filter(filterCallback); + } + var filtered = []; + + helpers$1.each(collection, function(item) { + if (filterCallback(item)) { + filtered.push(item); + } + }); + + return filtered; + }; + helpers$1.findIndex = Array.prototype.findIndex ? + function(array, callback, scope) { + return array.findIndex(callback, scope); + } : + function(array, callback, scope) { + scope = scope === undefined ? array : scope; + for (var i = 0, ilen = array.length; i < ilen; ++i) { + if (callback.call(scope, array[i], i, array)) { + return i; + } + } + return -1; + }; + helpers$1.findNextWhere = function(arrayToSearch, filterCallback, startIndex) { + // Default to start of the array + if (helpers$1.isNullOrUndef(startIndex)) { + startIndex = -1; + } + for (var i = startIndex + 1; i < arrayToSearch.length; i++) { + var currentItem = arrayToSearch[i]; + if (filterCallback(currentItem)) { + return currentItem; + } + } + }; + helpers$1.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) { + // Default to end of the array + if (helpers$1.isNullOrUndef(startIndex)) { + startIndex = arrayToSearch.length; + } + for (var i = startIndex - 1; i >= 0; i--) { + var currentItem = arrayToSearch[i]; + if (filterCallback(currentItem)) { + return currentItem; + } + } + }; + + // -- Math methods + helpers$1.isNumber = function(n) { + return !isNaN(parseFloat(n)) && isFinite(n); + }; + helpers$1.almostEquals = function(x, y, epsilon) { + return Math.abs(x - y) < epsilon; + }; + helpers$1.almostWhole = function(x, epsilon) { + var rounded = Math.round(x); + return ((rounded - epsilon) <= x) && ((rounded + epsilon) >= x); + }; + helpers$1.max = function(array) { + return array.reduce(function(max, value) { + if (!isNaN(value)) { + return Math.max(max, value); + } + return max; + }, Number.NEGATIVE_INFINITY); + }; + helpers$1.min = function(array) { + return array.reduce(function(min, value) { + if (!isNaN(value)) { + return Math.min(min, value); + } + return min; + }, Number.POSITIVE_INFINITY); + }; + helpers$1.sign = Math.sign ? + function(x) { + return Math.sign(x); + } : + function(x) { + x = +x; // convert to a number + if (x === 0 || isNaN(x)) { + return x; + } + return x > 0 ? 1 : -1; + }; + helpers$1.toRadians = function(degrees) { + return degrees * (Math.PI / 180); + }; + helpers$1.toDegrees = function(radians) { + return radians * (180 / Math.PI); + }; + + /** + * Returns the number of decimal places + * i.e. the number of digits after the decimal point, of the value of this Number. + * @param {number} x - A number. + * @returns {number} The number of decimal places. + * @private + */ + helpers$1._decimalPlaces = function(x) { + if (!helpers$1.isFinite(x)) { + return; + } + var e = 1; + var p = 0; + while (Math.round(x * e) / e !== x) { + e *= 10; + p++; + } + return p; + }; + + // Gets the angle from vertical upright to the point about a centre. + helpers$1.getAngleFromPoint = function(centrePoint, anglePoint) { + var distanceFromXCenter = anglePoint.x - centrePoint.x; + var distanceFromYCenter = anglePoint.y - centrePoint.y; + var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter); + + var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter); + + if (angle < (-0.5 * Math.PI)) { + angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2] + } + + return { + angle: angle, + distance: radialDistanceFromCenter + }; + }; + helpers$1.distanceBetweenPoints = function(pt1, pt2) { + return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2)); + }; + + /** + * Provided for backward compatibility, not available anymore + * @function Chart.helpers.aliasPixel + * @deprecated since version 2.8.0 + * @todo remove at version 3 + */ + helpers$1.aliasPixel = function(pixelWidth) { + return (pixelWidth % 2 === 0) ? 0 : 0.5; + }; + + /** + * Returns the aligned pixel value to avoid anti-aliasing blur + * @param {Chart} chart - The chart instance. + * @param {number} pixel - A pixel value. + * @param {number} width - The width of the element. + * @returns {number} The aligned pixel value. + * @private + */ + helpers$1._alignPixel = function(chart, pixel, width) { + var devicePixelRatio = chart.currentDevicePixelRatio; + var halfWidth = width / 2; + return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth; + }; + + helpers$1.splineCurve = function(firstPoint, middlePoint, afterPoint, t) { + // Props to Rob Spencer at scaled innovation for his post on splining between points + // http://scaledinnovation.com/analytics/splines/aboutSplines.html + + // This function must also respect "skipped" points + + var previous = firstPoint.skip ? middlePoint : firstPoint; + var current = middlePoint; + var next = afterPoint.skip ? middlePoint : afterPoint; + + var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2)); + var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2)); + + var s01 = d01 / (d01 + d12); + var s12 = d12 / (d01 + d12); + + // If all points are the same, s01 & s02 will be inf + s01 = isNaN(s01) ? 0 : s01; + s12 = isNaN(s12) ? 0 : s12; + + var fa = t * s01; // scaling factor for triangle Ta + var fb = t * s12; + + return { + previous: { + x: current.x - fa * (next.x - previous.x), + y: current.y - fa * (next.y - previous.y) + }, + next: { + x: current.x + fb * (next.x - previous.x), + y: current.y + fb * (next.y - previous.y) + } + }; + }; + helpers$1.EPSILON = Number.EPSILON || 1e-14; + helpers$1.splineCurveMonotone = function(points) { + // This function calculates Bézier control points in a similar way than |splineCurve|, + // but preserves monotonicity of the provided data and ensures no local extremums are added + // between the dataset discrete points due to the interpolation. + // See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation + + var pointsWithTangents = (points || []).map(function(point) { + return { + model: point._model, + deltaK: 0, + mK: 0 + }; + }); + + // Calculate slopes (deltaK) and initialize tangents (mK) + var pointsLen = pointsWithTangents.length; + var i, pointBefore, pointCurrent, pointAfter; + for (i = 0; i < pointsLen; ++i) { + pointCurrent = pointsWithTangents[i]; + if (pointCurrent.model.skip) { + continue; + } + + pointBefore = i > 0 ? pointsWithTangents[i - 1] : null; + pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null; + if (pointAfter && !pointAfter.model.skip) { + var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x); + + // In the case of two points that appear at the same x pixel, slopeDeltaX is 0 + pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0; + } + + if (!pointBefore || pointBefore.model.skip) { + pointCurrent.mK = pointCurrent.deltaK; + } else if (!pointAfter || pointAfter.model.skip) { + pointCurrent.mK = pointBefore.deltaK; + } else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) { + pointCurrent.mK = 0; + } else { + pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2; + } + } + + // Adjust tangents to ensure monotonic properties + var alphaK, betaK, tauK, squaredMagnitude; + for (i = 0; i < pointsLen - 1; ++i) { + pointCurrent = pointsWithTangents[i]; + pointAfter = pointsWithTangents[i + 1]; + if (pointCurrent.model.skip || pointAfter.model.skip) { + continue; + } + + if (helpers$1.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) { + pointCurrent.mK = pointAfter.mK = 0; + continue; + } + + alphaK = pointCurrent.mK / pointCurrent.deltaK; + betaK = pointAfter.mK / pointCurrent.deltaK; + squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2); + if (squaredMagnitude <= 9) { + continue; + } + + tauK = 3 / Math.sqrt(squaredMagnitude); + pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK; + pointAfter.mK = betaK * tauK * pointCurrent.deltaK; + } + + // Compute control points + var deltaX; + for (i = 0; i < pointsLen; ++i) { + pointCurrent = pointsWithTangents[i]; + if (pointCurrent.model.skip) { + continue; + } + + pointBefore = i > 0 ? pointsWithTangents[i - 1] : null; + pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null; + if (pointBefore && !pointBefore.model.skip) { + deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3; + pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX; + pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK; + } + if (pointAfter && !pointAfter.model.skip) { + deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3; + pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX; + pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK; + } + } + }; + helpers$1.nextItem = function(collection, index, loop) { + if (loop) { + return index >= collection.length - 1 ? collection[0] : collection[index + 1]; + } + return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1]; + }; + helpers$1.previousItem = function(collection, index, loop) { + if (loop) { + return index <= 0 ? collection[collection.length - 1] : collection[index - 1]; + } + return index <= 0 ? collection[0] : collection[index - 1]; + }; + // Implementation of the nice number algorithm used in determining where axis labels will go + helpers$1.niceNum = function(range, round) { + var exponent = Math.floor(helpers$1.log10(range)); + var fraction = range / Math.pow(10, exponent); + var niceFraction; + + if (round) { + if (fraction < 1.5) { + niceFraction = 1; + } else if (fraction < 3) { + niceFraction = 2; + } else if (fraction < 7) { + niceFraction = 5; + } else { + niceFraction = 10; + } + } else if (fraction <= 1.0) { + niceFraction = 1; + } else if (fraction <= 2) { + niceFraction = 2; + } else if (fraction <= 5) { + niceFraction = 5; + } else { + niceFraction = 10; + } + + return niceFraction * Math.pow(10, exponent); + }; + // Request animation polyfill - https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/ + helpers$1.requestAnimFrame = (function() { + if (typeof window === 'undefined') { + return function(callback) { + callback(); + }; + } + return window.requestAnimationFrame || + window.webkitRequestAnimationFrame || + window.mozRequestAnimationFrame || + window.oRequestAnimationFrame || + window.msRequestAnimationFrame || + function(callback) { + return window.setTimeout(callback, 1000 / 60); + }; + }()); + // -- DOM methods + helpers$1.getRelativePosition = function(evt, chart) { + var mouseX, mouseY; + var e = evt.originalEvent || evt; + var canvas = evt.target || evt.srcElement; + var boundingRect = canvas.getBoundingClientRect(); + + var touches = e.touches; + if (touches && touches.length > 0) { + mouseX = touches[0].clientX; + mouseY = touches[0].clientY; + + } else { + mouseX = e.clientX; + mouseY = e.clientY; + } + + // Scale mouse coordinates into canvas coordinates + // by following the pattern laid out by 'jerryj' in the comments of + // https://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/ + var paddingLeft = parseFloat(helpers$1.getStyle(canvas, 'padding-left')); + var paddingTop = parseFloat(helpers$1.getStyle(canvas, 'padding-top')); + var paddingRight = parseFloat(helpers$1.getStyle(canvas, 'padding-right')); + var paddingBottom = parseFloat(helpers$1.getStyle(canvas, 'padding-bottom')); + var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight; + var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom; + + // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However + // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here + mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio); + mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio); + + return { + x: mouseX, + y: mouseY + }; + + }; + + // Private helper function to convert max-width/max-height values that may be percentages into a number + function parseMaxStyle(styleValue, node, parentProperty) { + var valueInPixels; + if (typeof styleValue === 'string') { + valueInPixels = parseInt(styleValue, 10); + + if (styleValue.indexOf('%') !== -1) { + // percentage * size in dimension + valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty]; + } + } else { + valueInPixels = styleValue; + } + + return valueInPixels; + } + + /** + * Returns if the given value contains an effective constraint. + * @private + */ + function isConstrainedValue(value) { + return value !== undefined && value !== null && value !== 'none'; + } + + /** + * Returns the max width or height of the given DOM node in a cross-browser compatible fashion + * @param {HTMLElement} domNode - the node to check the constraint on + * @param {string} maxStyle - the style that defines the maximum for the direction we are using ('max-width' / 'max-height') + * @param {string} percentageProperty - property of parent to use when calculating width as a percentage + * @see {@link https://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser} + */ + function getConstraintDimension(domNode, maxStyle, percentageProperty) { + var view = document.defaultView; + var parentNode = helpers$1._getParentNode(domNode); + var constrainedNode = view.getComputedStyle(domNode)[maxStyle]; + var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle]; + var hasCNode = isConstrainedValue(constrainedNode); + var hasCContainer = isConstrainedValue(constrainedContainer); + var infinity = Number.POSITIVE_INFINITY; + + if (hasCNode || hasCContainer) { + return Math.min( + hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity, + hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity); + } + + return 'none'; + } + // returns Number or undefined if no constraint + helpers$1.getConstraintWidth = function(domNode) { + return getConstraintDimension(domNode, 'max-width', 'clientWidth'); + }; + // returns Number or undefined if no constraint + helpers$1.getConstraintHeight = function(domNode) { + return getConstraintDimension(domNode, 'max-height', 'clientHeight'); + }; + /** + * @private + */ + helpers$1._calculatePadding = function(container, padding, parentDimension) { + padding = helpers$1.getStyle(container, padding); + + return padding.indexOf('%') > -1 ? parentDimension * parseInt(padding, 10) / 100 : parseInt(padding, 10); + }; + /** + * @private + */ + helpers$1._getParentNode = function(domNode) { + var parent = domNode.parentNode; + if (parent && parent.toString() === '[object ShadowRoot]') { + parent = parent.host; + } + return parent; + }; + helpers$1.getMaximumWidth = function(domNode) { + var container = helpers$1._getParentNode(domNode); + if (!container) { + return domNode.clientWidth; + } + + var clientWidth = container.clientWidth; + var paddingLeft = helpers$1._calculatePadding(container, 'padding-left', clientWidth); + var paddingRight = helpers$1._calculatePadding(container, 'padding-right', clientWidth); + + var w = clientWidth - paddingLeft - paddingRight; + var cw = helpers$1.getConstraintWidth(domNode); + return isNaN(cw) ? w : Math.min(w, cw); + }; + helpers$1.getMaximumHeight = function(domNode) { + var container = helpers$1._getParentNode(domNode); + if (!container) { + return domNode.clientHeight; + } + + var clientHeight = container.clientHeight; + var paddingTop = helpers$1._calculatePadding(container, 'padding-top', clientHeight); + var paddingBottom = helpers$1._calculatePadding(container, 'padding-bottom', clientHeight); + + var h = clientHeight - paddingTop - paddingBottom; + var ch = helpers$1.getConstraintHeight(domNode); + return isNaN(ch) ? h : Math.min(h, ch); + }; + helpers$1.getStyle = function(el, property) { + return el.currentStyle ? + el.currentStyle[property] : + document.defaultView.getComputedStyle(el, null).getPropertyValue(property); + }; + helpers$1.retinaScale = function(chart, forceRatio) { + var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1; + if (pixelRatio === 1) { + return; + } + + var canvas = chart.canvas; + var height = chart.height; + var width = chart.width; + + canvas.height = height * pixelRatio; + canvas.width = width * pixelRatio; + chart.ctx.scale(pixelRatio, pixelRatio); + + // If no style has been set on the canvas, the render size is used as display size, + // making the chart visually bigger, so let's enforce it to the "correct" values. + // See https://github.com/chartjs/Chart.js/issues/3575 + if (!canvas.style.height && !canvas.style.width) { + canvas.style.height = height + 'px'; + canvas.style.width = width + 'px'; + } + }; + // -- Canvas methods + helpers$1.fontString = function(pixelSize, fontStyle, fontFamily) { + return fontStyle + ' ' + pixelSize + 'px ' + fontFamily; + }; + helpers$1.longestText = function(ctx, font, arrayOfThings, cache) { + cache = cache || {}; + var data = cache.data = cache.data || {}; + var gc = cache.garbageCollect = cache.garbageCollect || []; + + if (cache.font !== font) { + data = cache.data = {}; + gc = cache.garbageCollect = []; + cache.font = font; + } + + ctx.font = font; + var longest = 0; + var ilen = arrayOfThings.length; + var i, j, jlen, thing, nestedThing; + for (i = 0; i < ilen; i++) { + thing = arrayOfThings[i]; + + // Undefined strings and arrays should not be measured + if (thing !== undefined && thing !== null && helpers$1.isArray(thing) !== true) { + longest = helpers$1.measureText(ctx, data, gc, longest, thing); + } else if (helpers$1.isArray(thing)) { + // if it is an array lets measure each element + // to do maybe simplify this function a bit so we can do this more recursively? + for (j = 0, jlen = thing.length; j < jlen; j++) { + nestedThing = thing[j]; + // Undefined strings and arrays should not be measured + if (nestedThing !== undefined && nestedThing !== null && !helpers$1.isArray(nestedThing)) { + longest = helpers$1.measureText(ctx, data, gc, longest, nestedThing); + } + } + } + } + + var gcLen = gc.length / 2; + if (gcLen > arrayOfThings.length) { + for (i = 0; i < gcLen; i++) { + delete data[gc[i]]; + } + gc.splice(0, gcLen); + } + return longest; + }; + helpers$1.measureText = function(ctx, data, gc, longest, string) { + var textWidth = data[string]; + if (!textWidth) { + textWidth = data[string] = ctx.measureText(string).width; + gc.push(string); + } + if (textWidth > longest) { + longest = textWidth; + } + return longest; + }; + + /** + * @deprecated + */ + helpers$1.numberOfLabelLines = function(arrayOfThings) { + var numberOfLines = 1; + helpers$1.each(arrayOfThings, function(thing) { + if (helpers$1.isArray(thing)) { + if (thing.length > numberOfLines) { + numberOfLines = thing.length; + } + } + }); + return numberOfLines; + }; + + helpers$1.color = !chartjsColor ? + function(value) { + console.error('Color.js not found!'); + return value; + } : + function(value) { + /* global CanvasGradient */ + if (value instanceof CanvasGradient) { + value = core_defaults.global.defaultColor; + } + + return chartjsColor(value); + }; + + helpers$1.getHoverColor = function(colorValue) { + /* global CanvasPattern */ + return (colorValue instanceof CanvasPattern || colorValue instanceof CanvasGradient) ? + colorValue : + helpers$1.color(colorValue).saturate(0.5).darken(0.1).rgbString(); + }; +}; - // Shared Methods - isHorizontal: function() { - var pos = this.options.position; - return pos === 'top' || pos === 'bottom'; - }, +function abstract() { + throw new Error( + 'This method is not implemented: either no adapter can ' + + 'be found or an incomplete integration was provided.' + ); +} + +/** + * Date adapter (current used by the time scale) + * @namespace Chart._adapters._date + * @memberof Chart._adapters + * @private + */ + +/** + * Currently supported unit string values. + * @typedef {('millisecond'|'second'|'minute'|'hour'|'day'|'week'|'month'|'quarter'|'year')} + * @memberof Chart._adapters._date + * @name Unit + */ + +/** + * @class + */ +function DateAdapter(options) { + this.options = options || {}; +} + +helpers$1.extend(DateAdapter.prototype, /** @lends DateAdapter */ { + /** + * Returns a map of time formats for the supported formatting units defined + * in Unit as well as 'datetime' representing a detailed date/time string. + * @returns {{string: string}} + */ + formats: abstract, + + /** + * Parses the given `value` and return the associated timestamp. + * @param {any} value - the value to parse (usually comes from the data) + * @param {string} [format] - the expected data format + * @returns {(number|null)} + * @function + */ + parse: abstract, + + /** + * Returns the formatted date in the specified `format` for a given `timestamp`. + * @param {number} timestamp - the timestamp to format + * @param {string} format - the date/time token + * @return {string} + * @function + */ + format: abstract, + + /** + * Adds the specified `amount` of `unit` to the given `timestamp`. + * @param {number} timestamp - the input timestamp + * @param {number} amount - the amount to add + * @param {Unit} unit - the unit as string + * @return {number} + * @function + */ + add: abstract, + + /** + * Returns the number of `unit` between the given timestamps. + * @param {number} max - the input timestamp (reference) + * @param {number} min - the timestamp to substract + * @param {Unit} unit - the unit as string + * @return {number} + * @function + */ + diff: abstract, + + /** + * Returns start of `unit` for the given `timestamp`. + * @param {number} timestamp - the input timestamp + * @param {Unit} unit - the unit as string + * @param {number} [weekday] - the ISO day of the week with 1 being Monday + * and 7 being Sunday (only needed if param *unit* is `isoWeek`). + * @function + */ + startOf: abstract, + + /** + * Returns end of `unit` for the given `timestamp`. + * @param {number} timestamp - the input timestamp + * @param {Unit} unit - the unit as string + * @function + */ + endOf: abstract, + + // DEPRECATIONS + + /** + * Provided for backward compatibility for scale.getValueForPixel(), + * this method should be overridden only by the moment adapter. + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ + _create: function(value) { + return value; + } +}); + +DateAdapter.override = function(members) { + helpers$1.extend(DateAdapter.prototype, members); +}; + +var _date = DateAdapter; - // Actually draw the title block on the canvas - draw: function() { - var me = this; - var ctx = me.ctx; - var opts = me.options; +var core_adapters = { + _date: _date +}; - if (!opts.display) { - return; - } +/** + * Namespace to hold static tick generation functions + * @namespace Chart.Ticks + */ +var core_ticks = { + /** + * Namespace to hold formatters for different types of ticks + * @namespace Chart.Ticks.formatters + */ + formatters: { + /** + * Formatter for value labels + * @method Chart.Ticks.formatters.values + * @param value the value to display + * @return {string|string[]} the label to display + */ + values: function(value) { + return helpers$1.isArray(value) ? value : '' + value; + }, + + /** + * Formatter for linear numeric ticks + * @method Chart.Ticks.formatters.linear + * @param tickValue {number} the value to be formatted + * @param index {number} the position of the tickValue parameter in the ticks array + * @param ticks {number[]} the list of ticks being converted + * @return {string} string representation of the tickValue parameter + */ + linear: function(tickValue, index, ticks) { + // If we have lots of ticks, don't use the ones + var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0]; + + // If we have a number like 2.5 as the delta, figure out how many decimal places we need + if (Math.abs(delta) > 1) { + if (tickValue !== Math.floor(tickValue)) { + // not an integer + delta = tickValue - Math.floor(tickValue); + } + } + + var logDelta = helpers$1.log10(Math.abs(delta)); + var tickString = ''; + + if (tickValue !== 0) { + var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1])); + if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation + var logTick = helpers$1.log10(Math.abs(tickValue)); + var numExponential = Math.floor(logTick) - Math.floor(logDelta); + numExponential = Math.max(Math.min(numExponential, 20), 0); + tickString = tickValue.toExponential(numExponential); + } else { + var numDecimal = -1 * Math.floor(logDelta); + numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places + tickString = tickValue.toFixed(numDecimal); + } + } else { + tickString = '0'; // never show decimal places for 0 + } + + return tickString; + }, + + logarithmic: function(tickValue, index, ticks) { + var remain = tickValue / (Math.pow(10, Math.floor(helpers$1.log10(tickValue)))); + + if (tickValue === 0) { + return '0'; + } else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) { + return tickValue.toExponential(); + } + return ''; + } + } +}; - var fontOpts = helpers$1.options._parseFont(opts); - var lineHeight = fontOpts.lineHeight; - var offset = lineHeight / 2 + opts.padding; - var rotation = 0; - var top = me.top; - var left = me.left; - var bottom = me.bottom; - var right = me.right; - var maxWidth, titleX, titleY; - - ctx.fillStyle = helpers$1.valueOrDefault(opts.fontColor, core_defaults.global.defaultFontColor); // render in correct colour - ctx.font = fontOpts.string; - - // Horizontal - if (me.isHorizontal()) { - titleX = left + ((right - left) / 2); // midpoint of the width - titleY = top + offset; - maxWidth = right - left; - } else { - titleX = opts.position === 'left' ? left + offset : right - offset; - titleY = top + ((bottom - top) / 2); - maxWidth = bottom - top; - rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5); - } +var isArray = helpers$1.isArray; +var isNullOrUndef = helpers$1.isNullOrUndef; +var valueOrDefault$a = helpers$1.valueOrDefault; +var valueAtIndexOrDefault = helpers$1.valueAtIndexOrDefault; + +core_defaults._set('scale', { + display: true, + position: 'left', + offset: false, + + // grid line settings + gridLines: { + display: true, + color: 'rgba(0,0,0,0.1)', + lineWidth: 1, + drawBorder: true, + drawOnChartArea: true, + drawTicks: true, + tickMarkLength: 10, + zeroLineWidth: 1, + zeroLineColor: 'rgba(0,0,0,0.25)', + zeroLineBorderDash: [], + zeroLineBorderDashOffset: 0.0, + offsetGridLines: false, + borderDash: [], + borderDashOffset: 0.0 + }, + + // scale label + scaleLabel: { + // display property + display: false, + + // actual label + labelString: '', + + // top/bottom padding + padding: { + top: 4, + bottom: 4 + } + }, + + // label settings + ticks: { + beginAtZero: false, + minRotation: 0, + maxRotation: 50, + mirror: false, + padding: 0, + reverse: false, + display: true, + autoSkip: true, + autoSkipPadding: 0, + labelOffset: 0, + // We pass through arrays to be rendered as multiline labels, we convert Others to strings here. + callback: core_ticks.formatters.values, + minor: {}, + major: {} + } +}); + +/** Returns a new array containing numItems from arr */ +function sample(arr, numItems) { + var result = []; + var increment = arr.length / numItems; + var i = 0; + var len = arr.length; + + for (; i < len; i += increment) { + result.push(arr[Math.floor(i)]); + } + return result; +} + +function getPixelForGridLine(scale, index, offsetGridLines) { + var length = scale.getTicks().length; + var validIndex = Math.min(index, length - 1); + var lineValue = scale.getPixelForTick(validIndex); + var start = scale._startPixel; + var end = scale._endPixel; + var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error. + var offset; + + if (offsetGridLines) { + if (length === 1) { + offset = Math.max(lineValue - start, end - lineValue); + } else if (index === 0) { + offset = (scale.getPixelForTick(1) - lineValue) / 2; + } else { + offset = (lineValue - scale.getPixelForTick(validIndex - 1)) / 2; + } + lineValue += validIndex < index ? offset : -offset; + + // Return undefined if the pixel is out of the range + if (lineValue < start - epsilon || lineValue > end + epsilon) { + return; + } + } + return lineValue; +} + +function garbageCollect(caches, length) { + helpers$1.each(caches, function(cache) { + var gc = cache.gc; + var gcLen = gc.length / 2; + var i; + if (gcLen > length) { + for (i = 0; i < gcLen; ++i) { + delete cache.data[gc[i]]; + } + gc.splice(0, gcLen); + } + }); +} + +/** + * Returns {width, height, offset} objects for the first, last, widest, highest tick + * labels where offset indicates the anchor point offset from the top in pixels. + */ +function computeLabelSizes(ctx, tickFonts, ticks, caches) { + var length = ticks.length; + var widths = []; + var heights = []; + var offsets = []; + var widestLabelSize = 0; + var highestLabelSize = 0; + var i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel, widest, highest; + + for (i = 0; i < length; ++i) { + label = ticks[i].label; + tickFont = ticks[i].major ? tickFonts.major : tickFonts.minor; + ctx.font = fontString = tickFont.string; + cache = caches[fontString] = caches[fontString] || {data: {}, gc: []}; + lineHeight = tickFont.lineHeight; + width = height = 0; + // Undefined labels and arrays should not be measured + if (!isNullOrUndef(label) && !isArray(label)) { + width = helpers$1.measureText(ctx, cache.data, cache.gc, width, label); + height = lineHeight; + } else if (isArray(label)) { + // if it is an array let's measure each element + for (j = 0, jlen = label.length; j < jlen; ++j) { + nestedLabel = label[j]; + // Undefined labels and arrays should not be measured + if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) { + width = helpers$1.measureText(ctx, cache.data, cache.gc, width, nestedLabel); + height += lineHeight; + } + } + } + widths.push(width); + heights.push(height); + offsets.push(lineHeight / 2); + widestLabelSize = Math.max(width, widestLabelSize); + highestLabelSize = Math.max(height, highestLabelSize); + } + garbageCollect(caches, length); + + widest = widths.indexOf(widestLabelSize); + highest = heights.indexOf(highestLabelSize); + + function valueAt(idx) { + return { + width: widths[idx] || 0, + height: heights[idx] || 0, + offset: offsets[idx] || 0 + }; + } + + return { + first: valueAt(0), + last: valueAt(length - 1), + widest: valueAt(widest), + highest: valueAt(highest) + }; +} + +function getTickMarkLength(options) { + return options.drawTicks ? options.tickMarkLength : 0; +} + +function getScaleLabelHeight(options) { + var font, padding; + + if (!options.display) { + return 0; + } + + font = helpers$1.options._parseFont(options); + padding = helpers$1.options.toPadding(options.padding); + + return font.lineHeight + padding.height; +} + +function parseFontOptions(options, nestedOpts) { + return helpers$1.extend(helpers$1.options._parseFont({ + fontFamily: valueOrDefault$a(nestedOpts.fontFamily, options.fontFamily), + fontSize: valueOrDefault$a(nestedOpts.fontSize, options.fontSize), + fontStyle: valueOrDefault$a(nestedOpts.fontStyle, options.fontStyle), + lineHeight: valueOrDefault$a(nestedOpts.lineHeight, options.lineHeight) + }), { + color: helpers$1.options.resolve([nestedOpts.fontColor, options.fontColor, core_defaults.global.defaultFontColor]) + }); +} + +function parseTickFontOptions(options) { + var minor = parseFontOptions(options, options.minor); + var major = options.major.enabled ? parseFontOptions(options, options.major) : minor; + + return {minor: minor, major: major}; +} + +function nonSkipped(ticksToFilter) { + var filtered = []; + var item, index, len; + for (index = 0, len = ticksToFilter.length; index < len; ++index) { + item = ticksToFilter[index]; + if (typeof item._index !== 'undefined') { + filtered.push(item); + } + } + return filtered; +} + +function getEvenSpacing(arr) { + var len = arr.length; + var i, diff; + + if (len < 2) { + return false; + } + + for (diff = arr[0], i = 1; i < len; ++i) { + if (arr[i] - arr[i - 1] !== diff) { + return false; + } + } + return diff; +} + +function calculateSpacing(majorIndices, ticks, axisLength, ticksLimit) { + var evenMajorSpacing = getEvenSpacing(majorIndices); + var spacing = (ticks.length - 1) / ticksLimit; + var factors, factor, i, ilen; + + // If the major ticks are evenly spaced apart, place the minor ticks + // so that they divide the major ticks into even chunks + if (!evenMajorSpacing) { + return Math.max(spacing, 1); + } + + factors = helpers$1.math._factorize(evenMajorSpacing); + for (i = 0, ilen = factors.length - 1; i < ilen; i++) { + factor = factors[i]; + if (factor > spacing) { + return factor; + } + } + return Math.max(spacing, 1); +} + +function getMajorIndices(ticks) { + var result = []; + var i, ilen; + for (i = 0, ilen = ticks.length; i < ilen; i++) { + if (ticks[i].major) { + result.push(i); + } + } + return result; +} + +function skipMajors(ticks, majorIndices, spacing) { + var count = 0; + var next = majorIndices[0]; + var i, tick; + + spacing = Math.ceil(spacing); + for (i = 0; i < ticks.length; i++) { + tick = ticks[i]; + if (i === next) { + tick._index = i; + count++; + next = majorIndices[count * spacing]; + } else { + delete tick.label; + } + } +} + +function skip(ticks, spacing, majorStart, majorEnd) { + var start = valueOrDefault$a(majorStart, 0); + var end = Math.min(valueOrDefault$a(majorEnd, ticks.length), ticks.length); + var count = 0; + var length, i, tick, next; + + spacing = Math.ceil(spacing); + if (majorEnd) { + length = majorEnd - majorStart; + spacing = length / Math.floor(length / spacing); + } + + next = start; + + while (next < 0) { + count++; + next = Math.round(start + count * spacing); + } + + for (i = Math.max(start, 0); i < end; i++) { + tick = ticks[i]; + if (i === next) { + tick._index = i; + count++; + next = Math.round(start + count * spacing); + } else { + delete tick.label; + } + } +} + +var Scale = core_element.extend({ + + zeroLineIndex: 0, + + /** + * Get the padding needed for the scale + * @method getPadding + * @private + * @returns {Padding} the necessary padding + */ + getPadding: function() { + var me = this; + return { + left: me.paddingLeft || 0, + top: me.paddingTop || 0, + right: me.paddingRight || 0, + bottom: me.paddingBottom || 0 + }; + }, + + /** + * Returns the scale tick objects ({label, major}) + * @since 2.7 + */ + getTicks: function() { + return this._ticks; + }, + + /** + * @private + */ + _getLabels: function() { + var data = this.chart.data; + return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || []; + }, + + // These methods are ordered by lifecyle. Utilities then follow. + // Any function defined here is inherited by all scale types. + // Any function can be extended by the scale type + + /** + * Provided for backward compatibility, not available anymore + * @function Chart.Scale.mergeTicksOptions + * @deprecated since version 2.8.0 + * @todo remove at version 3 + */ + mergeTicksOptions: function() { + // noop + }, + + beforeUpdate: function() { + helpers$1.callback(this.options.beforeUpdate, [this]); + }, + + /** + * @param {number} maxWidth - the max width in pixels + * @param {number} maxHeight - the max height in pixels + * @param {object} margins - the space between the edge of the other scales and edge of the chart + * This space comes from two sources: + * - padding - space that's required to show the labels at the edges of the scale + * - thickness of scales or legends in another orientation + */ + update: function(maxWidth, maxHeight, margins) { + var me = this; + var tickOpts = me.options.ticks; + var sampleSize = tickOpts.sampleSize; + var i, ilen, labels, ticks, samplingEnabled; + + // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;) + me.beforeUpdate(); + + // Absorb the master measurements + me.maxWidth = maxWidth; + me.maxHeight = maxHeight; + me.margins = helpers$1.extend({ + left: 0, + right: 0, + top: 0, + bottom: 0 + }, margins); + + me._ticks = null; + me.ticks = null; + me._labelSizes = null; + me._maxLabelLines = 0; + me.longestLabelWidth = 0; + me.longestTextCache = me.longestTextCache || {}; + me._gridLineItems = null; + me._labelItems = null; + + // Dimensions + me.beforeSetDimensions(); + me.setDimensions(); + me.afterSetDimensions(); + + // Data min/max + me.beforeDataLimits(); + me.determineDataLimits(); + me.afterDataLimits(); + + // Ticks - `this.ticks` is now DEPRECATED! + // Internal ticks are now stored as objects in the PRIVATE `this._ticks` member + // and must not be accessed directly from outside this class. `this.ticks` being + // around for long time and not marked as private, we can't change its structure + // without unexpected breaking changes. If you need to access the scale ticks, + // use scale.getTicks() instead. + + me.beforeBuildTicks(); + + // New implementations should return an array of objects but for BACKWARD COMPAT, + // we still support no return (`this.ticks` internally set by calling this method). + ticks = me.buildTicks() || []; + + // Allow modification of ticks in callback. + ticks = me.afterBuildTicks(ticks) || ticks; + + // Ensure ticks contains ticks in new tick format + if ((!ticks || !ticks.length) && me.ticks) { + ticks = []; + for (i = 0, ilen = me.ticks.length; i < ilen; ++i) { + ticks.push({ + value: me.ticks[i], + major: false + }); + } + } + + me._ticks = ticks; + + // Compute tick rotation and fit using a sampled subset of labels + // We generally don't need to compute the size of every single label for determining scale size + samplingEnabled = sampleSize < ticks.length; + labels = me._convertTicksToLabels(samplingEnabled ? sample(ticks, sampleSize) : ticks); + + // _configure is called twice, once here, once from core.controller.updateLayout. + // Here we haven't been positioned yet, but dimensions are correct. + // Variables set in _configure are needed for calculateTickRotation, and + // it's ok that coordinates are not correct there, only dimensions matter. + me._configure(); + + // Tick Rotation + me.beforeCalculateTickRotation(); + me.calculateTickRotation(); + me.afterCalculateTickRotation(); + + me.beforeFit(); + me.fit(); + me.afterFit(); + + // Auto-skip + me._ticksToDraw = tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto') ? me._autoSkip(ticks) : ticks; + + if (samplingEnabled) { + // Generate labels using all non-skipped ticks + labels = me._convertTicksToLabels(me._ticksToDraw); + } + + me.ticks = labels; // BACKWARD COMPATIBILITY + + // IMPORTANT: after this point, we consider that `this.ticks` will NEVER change! + + me.afterUpdate(); + + // TODO(v3): remove minSize as a public property and return value from all layout boxes. It is unused + // make maxWidth and maxHeight private + return me.minSize; + }, + + /** + * @private + */ + _configure: function() { + var me = this; + var reversePixels = me.options.ticks.reverse; + var startPixel, endPixel; + + if (me.isHorizontal()) { + startPixel = me.left; + endPixel = me.right; + } else { + startPixel = me.top; + endPixel = me.bottom; + // by default vertical scales are from bottom to top, so pixels are reversed + reversePixels = !reversePixels; + } + me._startPixel = startPixel; + me._endPixel = endPixel; + me._reversePixels = reversePixels; + me._length = endPixel - startPixel; + }, + + afterUpdate: function() { + helpers$1.callback(this.options.afterUpdate, [this]); + }, + + // + + beforeSetDimensions: function() { + helpers$1.callback(this.options.beforeSetDimensions, [this]); + }, + setDimensions: function() { + var me = this; + // Set the unconstrained dimension before label rotation + if (me.isHorizontal()) { + // Reset position before calculating rotation + me.width = me.maxWidth; + me.left = 0; + me.right = me.width; + } else { + me.height = me.maxHeight; + + // Reset position before calculating rotation + me.top = 0; + me.bottom = me.height; + } + + // Reset padding + me.paddingLeft = 0; + me.paddingTop = 0; + me.paddingRight = 0; + me.paddingBottom = 0; + }, + afterSetDimensions: function() { + helpers$1.callback(this.options.afterSetDimensions, [this]); + }, + + // Data limits + beforeDataLimits: function() { + helpers$1.callback(this.options.beforeDataLimits, [this]); + }, + determineDataLimits: helpers$1.noop, + afterDataLimits: function() { + helpers$1.callback(this.options.afterDataLimits, [this]); + }, + + // + beforeBuildTicks: function() { + helpers$1.callback(this.options.beforeBuildTicks, [this]); + }, + buildTicks: helpers$1.noop, + afterBuildTicks: function(ticks) { + var me = this; + // ticks is empty for old axis implementations here + if (isArray(ticks) && ticks.length) { + return helpers$1.callback(me.options.afterBuildTicks, [me, ticks]); + } + // Support old implementations (that modified `this.ticks` directly in buildTicks) + me.ticks = helpers$1.callback(me.options.afterBuildTicks, [me, me.ticks]) || me.ticks; + return ticks; + }, + + beforeTickToLabelConversion: function() { + helpers$1.callback(this.options.beforeTickToLabelConversion, [this]); + }, + convertTicksToLabels: function() { + var me = this; + // Convert ticks to strings + var tickOpts = me.options.ticks; + me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this); + }, + afterTickToLabelConversion: function() { + helpers$1.callback(this.options.afterTickToLabelConversion, [this]); + }, + + // + + beforeCalculateTickRotation: function() { + helpers$1.callback(this.options.beforeCalculateTickRotation, [this]); + }, + calculateTickRotation: function() { + var me = this; + var options = me.options; + var tickOpts = options.ticks; + var numTicks = me.getTicks().length; + var minRotation = tickOpts.minRotation || 0; + var maxRotation = tickOpts.maxRotation; + var labelRotation = minRotation; + var labelSizes, maxLabelWidth, maxLabelHeight, maxWidth, tickWidth, maxHeight, maxLabelDiagonal; + + if (!me._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !me.isHorizontal()) { + me.labelRotation = minRotation; + return; + } + + labelSizes = me._getLabelSizes(); + maxLabelWidth = labelSizes.widest.width; + maxLabelHeight = labelSizes.highest.height - labelSizes.highest.offset; + + // Estimate the width of each grid based on the canvas width, the maximum + // label width and the number of tick intervals + maxWidth = Math.min(me.maxWidth, me.chart.width - maxLabelWidth); + tickWidth = options.offset ? me.maxWidth / numTicks : maxWidth / (numTicks - 1); + + // Allow 3 pixels x2 padding either side for label readability + if (maxLabelWidth + 6 > tickWidth) { + tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1)); + maxHeight = me.maxHeight - getTickMarkLength(options.gridLines) + - tickOpts.padding - getScaleLabelHeight(options.scaleLabel); + maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight); + labelRotation = helpers$1.toDegrees(Math.min( + Math.asin(Math.min((labelSizes.highest.height + 6) / tickWidth, 1)), + Math.asin(Math.min(maxHeight / maxLabelDiagonal, 1)) - Math.asin(maxLabelHeight / maxLabelDiagonal) + )); + labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation)); + } + + me.labelRotation = labelRotation; + }, + afterCalculateTickRotation: function() { + helpers$1.callback(this.options.afterCalculateTickRotation, [this]); + }, + + // + + beforeFit: function() { + helpers$1.callback(this.options.beforeFit, [this]); + }, + fit: function() { + var me = this; + // Reset + var minSize = me.minSize = { + width: 0, + height: 0 + }; + + var chart = me.chart; + var opts = me.options; + var tickOpts = opts.ticks; + var scaleLabelOpts = opts.scaleLabel; + var gridLineOpts = opts.gridLines; + var display = me._isVisible(); + var isBottom = opts.position === 'bottom'; + var isHorizontal = me.isHorizontal(); + + // Width + if (isHorizontal) { + minSize.width = me.maxWidth; + } else if (display) { + minSize.width = getTickMarkLength(gridLineOpts) + getScaleLabelHeight(scaleLabelOpts); + } + + // height + if (!isHorizontal) { + minSize.height = me.maxHeight; // fill all the height + } else if (display) { + minSize.height = getTickMarkLength(gridLineOpts) + getScaleLabelHeight(scaleLabelOpts); + } + + // Don't bother fitting the ticks if we are not showing the labels + if (tickOpts.display && display) { + var tickFonts = parseTickFontOptions(tickOpts); + var labelSizes = me._getLabelSizes(); + var firstLabelSize = labelSizes.first; + var lastLabelSize = labelSizes.last; + var widestLabelSize = labelSizes.widest; + var highestLabelSize = labelSizes.highest; + var lineSpace = tickFonts.minor.lineHeight * 0.4; + var tickPadding = tickOpts.padding; + + if (isHorizontal) { + // A horizontal axis is more constrained by the height. + var isRotated = me.labelRotation !== 0; + var angleRadians = helpers$1.toRadians(me.labelRotation); + var cosRotation = Math.cos(angleRadians); + var sinRotation = Math.sin(angleRadians); + + var labelHeight = sinRotation * widestLabelSize.width + + cosRotation * (highestLabelSize.height - (isRotated ? highestLabelSize.offset : 0)) + + (isRotated ? 0 : lineSpace); // padding + + minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding); + + var offsetLeft = me.getPixelForTick(0) - me.left; + var offsetRight = me.right - me.getPixelForTick(me.getTicks().length - 1); + var paddingLeft, paddingRight; + + // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned + // which means that the right padding is dominated by the font height + if (isRotated) { + paddingLeft = isBottom ? + cosRotation * firstLabelSize.width + sinRotation * firstLabelSize.offset : + sinRotation * (firstLabelSize.height - firstLabelSize.offset); + paddingRight = isBottom ? + sinRotation * (lastLabelSize.height - lastLabelSize.offset) : + cosRotation * lastLabelSize.width + sinRotation * lastLabelSize.offset; + } else { + paddingLeft = firstLabelSize.width / 2; + paddingRight = lastLabelSize.width / 2; + } + + // Adjust padding taking into account changes in offsets + // and add 3 px to move away from canvas edges + me.paddingLeft = Math.max((paddingLeft - offsetLeft) * me.width / (me.width - offsetLeft), 0) + 3; + me.paddingRight = Math.max((paddingRight - offsetRight) * me.width / (me.width - offsetRight), 0) + 3; + } else { + // A vertical axis is more constrained by the width. Labels are the + // dominant factor here, so get that length first and account for padding + var labelWidth = tickOpts.mirror ? 0 : + // use lineSpace for consistency with horizontal axis + // tickPadding is not implemented for horizontal + widestLabelSize.width + tickPadding + lineSpace; + + minSize.width = Math.min(me.maxWidth, minSize.width + labelWidth); + + me.paddingTop = firstLabelSize.height / 2; + me.paddingBottom = lastLabelSize.height / 2; + } + } + + me.handleMargins(); + + if (isHorizontal) { + me.width = me._length = chart.width - me.margins.left - me.margins.right; + me.height = minSize.height; + } else { + me.width = minSize.width; + me.height = me._length = chart.height - me.margins.top - me.margins.bottom; + } + }, + + /** + * Handle margins and padding interactions + * @private + */ + handleMargins: function() { + var me = this; + if (me.margins) { + me.margins.left = Math.max(me.paddingLeft, me.margins.left); + me.margins.top = Math.max(me.paddingTop, me.margins.top); + me.margins.right = Math.max(me.paddingRight, me.margins.right); + me.margins.bottom = Math.max(me.paddingBottom, me.margins.bottom); + } + }, + + afterFit: function() { + helpers$1.callback(this.options.afterFit, [this]); + }, + + // Shared Methods + isHorizontal: function() { + var pos = this.options.position; + return pos === 'top' || pos === 'bottom'; + }, + isFullWidth: function() { + return this.options.fullWidth; + }, + + // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not + getRightValue: function(rawValue) { + // Null and undefined values first + if (isNullOrUndef(rawValue)) { + return NaN; + } + // isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values + if ((typeof rawValue === 'number' || rawValue instanceof Number) && !isFinite(rawValue)) { + return NaN; + } + + // If it is in fact an object, dive in one more level + if (rawValue) { + if (this.isHorizontal()) { + if (rawValue.x !== undefined) { + return this.getRightValue(rawValue.x); + } + } else if (rawValue.y !== undefined) { + return this.getRightValue(rawValue.y); + } + } + + // Value is good, return it + return rawValue; + }, + + _convertTicksToLabels: function(ticks) { + var me = this; + var labels, i, ilen; + + me.ticks = ticks.map(function(tick) { + return tick.value; + }); + + me.beforeTickToLabelConversion(); + + // New implementations should return the formatted tick labels but for BACKWARD + // COMPAT, we still support no return (`this.ticks` internally changed by calling + // this method and supposed to contain only string values). + labels = me.convertTicksToLabels(ticks) || me.ticks; + + me.afterTickToLabelConversion(); + + // BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`) + for (i = 0, ilen = ticks.length; i < ilen; ++i) { + ticks[i].label = labels[i]; + } + + return labels; + }, + + /** + * @private + */ + _getLabelSizes: function() { + var me = this; + var labelSizes = me._labelSizes; + + if (!labelSizes) { + me._labelSizes = labelSizes = computeLabelSizes(me.ctx, parseTickFontOptions(me.options.ticks), me.getTicks(), me.longestTextCache); + me.longestLabelWidth = labelSizes.widest.width; + } + + return labelSizes; + }, + + /** + * @private + */ + _parseValue: function(value) { + var start, end, min, max; + + if (isArray(value)) { + start = +this.getRightValue(value[0]); + end = +this.getRightValue(value[1]); + min = Math.min(start, end); + max = Math.max(start, end); + } else { + value = +this.getRightValue(value); + start = undefined; + end = value; + min = value; + max = value; + } + + return { + min: min, + max: max, + start: start, + end: end + }; + }, + + /** + * @private + */ + _getScaleLabel: function(rawValue) { + var v = this._parseValue(rawValue); + if (v.start !== undefined) { + return '[' + v.start + ', ' + v.end + ']'; + } + + return +this.getRightValue(rawValue); + }, + + /** + * Used to get the value to display in the tooltip for the data at the given index + * @param index + * @param datasetIndex + */ + getLabelForIndex: helpers$1.noop, + + /** + * Returns the location of the given data point. Value can either be an index or a numerical value + * The coordinate (0, 0) is at the upper-left corner of the canvas + * @param value + * @param index + * @param datasetIndex + */ + getPixelForValue: helpers$1.noop, + + /** + * Used to get the data value from a given pixel. This is the inverse of getPixelForValue + * The coordinate (0, 0) is at the upper-left corner of the canvas + * @param pixel + */ + getValueForPixel: helpers$1.noop, + + /** + * Returns the location of the tick at the given index + * The coordinate (0, 0) is at the upper-left corner of the canvas + */ + getPixelForTick: function(index) { + var me = this; + var offset = me.options.offset; + var numTicks = me._ticks.length; + var tickWidth = 1 / Math.max(numTicks - (offset ? 0 : 1), 1); + + return index < 0 || index > numTicks - 1 + ? null + : me.getPixelForDecimal(index * tickWidth + (offset ? tickWidth / 2 : 0)); + }, + + /** + * Utility for getting the pixel location of a percentage of scale + * The coordinate (0, 0) is at the upper-left corner of the canvas + */ + getPixelForDecimal: function(decimal) { + var me = this; + + if (me._reversePixels) { + decimal = 1 - decimal; + } + + return me._startPixel + decimal * me._length; + }, + + getDecimalForPixel: function(pixel) { + var decimal = (pixel - this._startPixel) / this._length; + return this._reversePixels ? 1 - decimal : decimal; + }, + + /** + * Returns the pixel for the minimum chart value + * The coordinate (0, 0) is at the upper-left corner of the canvas + */ + getBasePixel: function() { + return this.getPixelForValue(this.getBaseValue()); + }, + + getBaseValue: function() { + var me = this; + var min = me.min; + var max = me.max; + + return me.beginAtZero ? 0 : + min < 0 && max < 0 ? max : + min > 0 && max > 0 ? min : + 0; + }, + + /** + * Returns a subset of ticks to be plotted to avoid overlapping labels. + * @private + */ + _autoSkip: function(ticks) { + var me = this; + var tickOpts = me.options.ticks; + var axisLength = me._length; + var ticksLimit = tickOpts.maxTicksLimit || axisLength / me._tickSize() + 1; + var majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : []; + var numMajorIndices = majorIndices.length; + var first = majorIndices[0]; + var last = majorIndices[numMajorIndices - 1]; + var i, ilen, spacing, avgMajorSpacing; + + // If there are too many major ticks to display them all + if (numMajorIndices > ticksLimit) { + skipMajors(ticks, majorIndices, numMajorIndices / ticksLimit); + return nonSkipped(ticks); + } + + spacing = calculateSpacing(majorIndices, ticks, axisLength, ticksLimit); + + if (numMajorIndices > 0) { + for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) { + skip(ticks, spacing, majorIndices[i], majorIndices[i + 1]); + } + avgMajorSpacing = numMajorIndices > 1 ? (last - first) / (numMajorIndices - 1) : null; + skip(ticks, spacing, helpers$1.isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first); + skip(ticks, spacing, last, helpers$1.isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing); + return nonSkipped(ticks); + } + skip(ticks, spacing); + return nonSkipped(ticks); + }, + + /** + * @private + */ + _tickSize: function() { + var me = this; + var optionTicks = me.options.ticks; + + // Calculate space needed by label in axis direction. + var rot = helpers$1.toRadians(me.labelRotation); + var cos = Math.abs(Math.cos(rot)); + var sin = Math.abs(Math.sin(rot)); + + var labelSizes = me._getLabelSizes(); + var padding = optionTicks.autoSkipPadding || 0; + var w = labelSizes ? labelSizes.widest.width + padding : 0; + var h = labelSizes ? labelSizes.highest.height + padding : 0; + + // Calculate space needed for 1 tick in axis direction. + return me.isHorizontal() + ? h * cos > w * sin ? w / cos : h / sin + : h * sin < w * cos ? h / cos : w / sin; + }, + + /** + * @private + */ + _isVisible: function() { + var me = this; + var chart = me.chart; + var display = me.options.display; + var i, ilen, meta; + + if (display !== 'auto') { + return !!display; + } + + // When 'auto', the scale is visible if at least one associated dataset is visible. + for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) { + if (chart.isDatasetVisible(i)) { + meta = chart.getDatasetMeta(i); + if (meta.xAxisID === me.id || meta.yAxisID === me.id) { + return true; + } + } + } + + return false; + }, + + /** + * @private + */ + _computeGridLineItems: function(chartArea) { + var me = this; + var chart = me.chart; + var options = me.options; + var gridLines = options.gridLines; + var position = options.position; + var offsetGridLines = gridLines.offsetGridLines; + var isHorizontal = me.isHorizontal(); + var ticks = me._ticksToDraw; + var ticksLength = ticks.length + (offsetGridLines ? 1 : 0); + + var tl = getTickMarkLength(gridLines); + var items = []; + var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0; + var axisHalfWidth = axisWidth / 2; + var alignPixel = helpers$1._alignPixel; + var alignBorderValue = function(pixel) { + return alignPixel(chart, pixel, axisWidth); + }; + var borderValue, i, tick, lineValue, alignedLineValue; + var tx1, ty1, tx2, ty2, x1, y1, x2, y2, lineWidth, lineColor, borderDash, borderDashOffset; + + if (position === 'top') { + borderValue = alignBorderValue(me.bottom); + ty1 = me.bottom - tl; + ty2 = borderValue - axisHalfWidth; + y1 = alignBorderValue(chartArea.top) + axisHalfWidth; + y2 = chartArea.bottom; + } else if (position === 'bottom') { + borderValue = alignBorderValue(me.top); + y1 = chartArea.top; + y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth; + ty1 = borderValue + axisHalfWidth; + ty2 = me.top + tl; + } else if (position === 'left') { + borderValue = alignBorderValue(me.right); + tx1 = me.right - tl; + tx2 = borderValue - axisHalfWidth; + x1 = alignBorderValue(chartArea.left) + axisHalfWidth; + x2 = chartArea.right; + } else { + borderValue = alignBorderValue(me.left); + x1 = chartArea.left; + x2 = alignBorderValue(chartArea.right) - axisHalfWidth; + tx1 = borderValue + axisHalfWidth; + tx2 = me.left + tl; + } + + for (i = 0; i < ticksLength; ++i) { + tick = ticks[i] || {}; + + // autoskipper skipped this tick (#4635) + if (isNullOrUndef(tick.label) && i < ticks.length) { + continue; + } + + if (i === me.zeroLineIndex && options.offset === offsetGridLines) { + // Draw the first index specially + lineWidth = gridLines.zeroLineWidth; + lineColor = gridLines.zeroLineColor; + borderDash = gridLines.zeroLineBorderDash || []; + borderDashOffset = gridLines.zeroLineBorderDashOffset || 0.0; + } else { + lineWidth = valueAtIndexOrDefault(gridLines.lineWidth, i, 1); + lineColor = valueAtIndexOrDefault(gridLines.color, i, 'rgba(0,0,0,0.1)'); + borderDash = gridLines.borderDash || []; + borderDashOffset = gridLines.borderDashOffset || 0.0; + } + + lineValue = getPixelForGridLine(me, tick._index || i, offsetGridLines); + + // Skip if the pixel is out of the range + if (lineValue === undefined) { + continue; + } + + alignedLineValue = alignPixel(chart, lineValue, lineWidth); + + if (isHorizontal) { + tx1 = tx2 = x1 = x2 = alignedLineValue; + } else { + ty1 = ty2 = y1 = y2 = alignedLineValue; + } + + items.push({ + tx1: tx1, + ty1: ty1, + tx2: tx2, + ty2: ty2, + x1: x1, + y1: y1, + x2: x2, + y2: y2, + width: lineWidth, + color: lineColor, + borderDash: borderDash, + borderDashOffset: borderDashOffset, + }); + } + + items.ticksLength = ticksLength; + items.borderValue = borderValue; + + return items; + }, + + /** + * @private + */ + _computeLabelItems: function() { + var me = this; + var options = me.options; + var optionTicks = options.ticks; + var position = options.position; + var isMirrored = optionTicks.mirror; + var isHorizontal = me.isHorizontal(); + var ticks = me._ticksToDraw; + var fonts = parseTickFontOptions(optionTicks); + var tickPadding = optionTicks.padding; + var tl = getTickMarkLength(options.gridLines); + var rotation = -helpers$1.toRadians(me.labelRotation); + var items = []; + var i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset; + + if (position === 'top') { + y = me.bottom - tl - tickPadding; + textAlign = !rotation ? 'center' : 'left'; + } else if (position === 'bottom') { + y = me.top + tl + tickPadding; + textAlign = !rotation ? 'center' : 'right'; + } else if (position === 'left') { + x = me.right - (isMirrored ? 0 : tl) - tickPadding; + textAlign = isMirrored ? 'left' : 'right'; + } else { + x = me.left + (isMirrored ? 0 : tl) + tickPadding; + textAlign = isMirrored ? 'right' : 'left'; + } + + for (i = 0, ilen = ticks.length; i < ilen; ++i) { + tick = ticks[i]; + label = tick.label; + + // autoskipper skipped this tick (#4635) + if (isNullOrUndef(label)) { + continue; + } + + pixel = me.getPixelForTick(tick._index || i) + optionTicks.labelOffset; + font = tick.major ? fonts.major : fonts.minor; + lineHeight = font.lineHeight; + lineCount = isArray(label) ? label.length : 1; + + if (isHorizontal) { + x = pixel; + textOffset = position === 'top' + ? ((!rotation ? 0.5 : 1) - lineCount) * lineHeight + : (!rotation ? 0.5 : 0) * lineHeight; + } else { + y = pixel; + textOffset = (1 - lineCount) * lineHeight / 2; + } + + items.push({ + x: x, + y: y, + rotation: rotation, + label: label, + font: font, + textOffset: textOffset, + textAlign: textAlign + }); + } + + return items; + }, + + /** + * @private + */ + _drawGrid: function(chartArea) { + var me = this; + var gridLines = me.options.gridLines; + + if (!gridLines.display) { + return; + } + + var ctx = me.ctx; + var chart = me.chart; + var alignPixel = helpers$1._alignPixel; + var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0; + var items = me._gridLineItems || (me._gridLineItems = me._computeGridLineItems(chartArea)); + var width, color, i, ilen, item; + + for (i = 0, ilen = items.length; i < ilen; ++i) { + item = items[i]; + width = item.width; + color = item.color; + + if (width && color) { + ctx.save(); + ctx.lineWidth = width; + ctx.strokeStyle = color; + if (ctx.setLineDash) { + ctx.setLineDash(item.borderDash); + ctx.lineDashOffset = item.borderDashOffset; + } + + ctx.beginPath(); + + if (gridLines.drawTicks) { + ctx.moveTo(item.tx1, item.ty1); + ctx.lineTo(item.tx2, item.ty2); + } + + if (gridLines.drawOnChartArea) { + ctx.moveTo(item.x1, item.y1); + ctx.lineTo(item.x2, item.y2); + } + + ctx.stroke(); + ctx.restore(); + } + } + + if (axisWidth) { + // Draw the line at the edge of the axis + var firstLineWidth = axisWidth; + var lastLineWidth = valueAtIndexOrDefault(gridLines.lineWidth, items.ticksLength - 1, 1); + var borderValue = items.borderValue; + var x1, x2, y1, y2; + + if (me.isHorizontal()) { + x1 = alignPixel(chart, me.left, firstLineWidth) - firstLineWidth / 2; + x2 = alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2; + y1 = y2 = borderValue; + } else { + y1 = alignPixel(chart, me.top, firstLineWidth) - firstLineWidth / 2; + y2 = alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2; + x1 = x2 = borderValue; + } + + ctx.lineWidth = axisWidth; + ctx.strokeStyle = valueAtIndexOrDefault(gridLines.color, 0); + ctx.beginPath(); + ctx.moveTo(x1, y1); + ctx.lineTo(x2, y2); + ctx.stroke(); + } + }, + + /** + * @private + */ + _drawLabels: function() { + var me = this; + var optionTicks = me.options.ticks; + + if (!optionTicks.display) { + return; + } + + var ctx = me.ctx; + var items = me._labelItems || (me._labelItems = me._computeLabelItems()); + var i, j, ilen, jlen, item, tickFont, label, y; + + for (i = 0, ilen = items.length; i < ilen; ++i) { + item = items[i]; + tickFont = item.font; + + // Make sure we draw text in the correct color and font + ctx.save(); + ctx.translate(item.x, item.y); + ctx.rotate(item.rotation); + ctx.font = tickFont.string; + ctx.fillStyle = tickFont.color; + ctx.textBaseline = 'middle'; + ctx.textAlign = item.textAlign; + + label = item.label; + y = item.textOffset; + if (isArray(label)) { + for (j = 0, jlen = label.length; j < jlen; ++j) { + // We just make sure the multiline element is a string here.. + ctx.fillText('' + label[j], 0, y); + y += tickFont.lineHeight; + } + } else { + ctx.fillText(label, 0, y); + } + ctx.restore(); + } + }, + + /** + * @private + */ + _drawTitle: function() { + var me = this; + var ctx = me.ctx; + var options = me.options; + var scaleLabel = options.scaleLabel; + + if (!scaleLabel.display) { + return; + } + + var scaleLabelFontColor = valueOrDefault$a(scaleLabel.fontColor, core_defaults.global.defaultFontColor); + var scaleLabelFont = helpers$1.options._parseFont(scaleLabel); + var scaleLabelPadding = helpers$1.options.toPadding(scaleLabel.padding); + var halfLineHeight = scaleLabelFont.lineHeight / 2; + var position = options.position; + var rotation = 0; + var scaleLabelX, scaleLabelY; + + if (me.isHorizontal()) { + scaleLabelX = me.left + me.width / 2; // midpoint of the width + scaleLabelY = position === 'bottom' + ? me.bottom - halfLineHeight - scaleLabelPadding.bottom + : me.top + halfLineHeight + scaleLabelPadding.top; + } else { + var isLeft = position === 'left'; + scaleLabelX = isLeft + ? me.left + halfLineHeight + scaleLabelPadding.top + : me.right - halfLineHeight - scaleLabelPadding.top; + scaleLabelY = me.top + me.height / 2; + rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI; + } + + ctx.save(); + ctx.translate(scaleLabelX, scaleLabelY); + ctx.rotate(rotation); + ctx.textAlign = 'center'; + ctx.textBaseline = 'middle'; + ctx.fillStyle = scaleLabelFontColor; // render in correct colour + ctx.font = scaleLabelFont.string; + ctx.fillText(scaleLabel.labelString, 0, 0); + ctx.restore(); + }, + + draw: function(chartArea) { + var me = this; + + if (!me._isVisible()) { + return; + } + + me._drawGrid(chartArea); + me._drawTitle(); + me._drawLabels(); + }, + + /** + * @private + */ + _layers: function() { + var me = this; + var opts = me.options; + var tz = opts.ticks && opts.ticks.z || 0; + var gz = opts.gridLines && opts.gridLines.z || 0; + + if (!me._isVisible() || tz === gz || me.draw !== me._draw) { + // backward compatibility: draw has been overridden by custom scale + return [{ + z: tz, + draw: function() { + me.draw.apply(me, arguments); + } + }]; + } + + return [{ + z: gz, + draw: function() { + me._drawGrid.apply(me, arguments); + me._drawTitle.apply(me, arguments); + } + }, { + z: tz, + draw: function() { + me._drawLabels.apply(me, arguments); + } + }]; + }, + + /** + * @private + */ + _getMatchingVisibleMetas: function(type) { + var me = this; + var isHorizontal = me.isHorizontal(); + return me.chart._getSortedVisibleDatasetMetas() + .filter(function(meta) { + return (!type || meta.type === type) + && (isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id); + }); + } +}); + +Scale.prototype._draw = Scale.prototype.draw; + +var core_scale = Scale; - ctx.save(); - ctx.translate(titleX, titleY); - ctx.rotate(rotation); - ctx.textAlign = 'center'; - ctx.textBaseline = 'middle'; - - var text = opts.text; - if (helpers$1.isArray(text)) { - var y = 0; - for (var i = 0; i < text.length; ++i) { - ctx.fillText(text[i], 0, y, maxWidth); - y += lineHeight; - } - } else { - ctx.fillText(text, 0, 0, maxWidth); - } +var isNullOrUndef$1 = helpers$1.isNullOrUndef; + +var defaultConfig = { + position: 'bottom' +}; + +var scale_category = core_scale.extend({ + determineDataLimits: function() { + var me = this; + var labels = me._getLabels(); + var ticksOpts = me.options.ticks; + var min = ticksOpts.min; + var max = ticksOpts.max; + var minIndex = 0; + var maxIndex = labels.length - 1; + var findIndex; + + if (min !== undefined) { + // user specified min value + findIndex = labels.indexOf(min); + if (findIndex >= 0) { + minIndex = findIndex; + } + } + + if (max !== undefined) { + // user specified max value + findIndex = labels.indexOf(max); + if (findIndex >= 0) { + maxIndex = findIndex; + } + } + + me.minIndex = minIndex; + me.maxIndex = maxIndex; + me.min = labels[minIndex]; + me.max = labels[maxIndex]; + }, + + buildTicks: function() { + var me = this; + var labels = me._getLabels(); + var minIndex = me.minIndex; + var maxIndex = me.maxIndex; + + // If we are viewing some subset of labels, slice the original array + me.ticks = (minIndex === 0 && maxIndex === labels.length - 1) ? labels : labels.slice(minIndex, maxIndex + 1); + }, + + getLabelForIndex: function(index, datasetIndex) { + var me = this; + var chart = me.chart; + + if (chart.getDatasetMeta(datasetIndex).controller._getValueScaleId() === me.id) { + return me.getRightValue(chart.data.datasets[datasetIndex].data[index]); + } + + return me._getLabels()[index]; + }, + + _configure: function() { + var me = this; + var offset = me.options.offset; + var ticks = me.ticks; + + core_scale.prototype._configure.call(me); + + if (!me.isHorizontal()) { + // For backward compatibility, vertical category scale reverse is inverted. + me._reversePixels = !me._reversePixels; + } + + if (!ticks) { + return; + } + + me._startValue = me.minIndex - (offset ? 0.5 : 0); + me._valueRange = Math.max(ticks.length - (offset ? 0 : 1), 1); + }, + + // Used to get data value locations. Value can either be an index or a numerical value + getPixelForValue: function(value, index, datasetIndex) { + var me = this; + var valueCategory, labels, idx; + + if (!isNullOrUndef$1(index) && !isNullOrUndef$1(datasetIndex)) { + value = me.chart.data.datasets[datasetIndex].data[index]; + } + + // If value is a data object, then index is the index in the data array, + // not the index of the scale. We need to change that. + if (!isNullOrUndef$1(value)) { + valueCategory = me.isHorizontal() ? value.x : value.y; + } + if (valueCategory !== undefined || (value !== undefined && isNaN(index))) { + labels = me._getLabels(); + value = helpers$1.valueOrDefault(valueCategory, value); + idx = labels.indexOf(value); + index = idx !== -1 ? idx : index; + if (isNaN(index)) { + index = value; + } + } + return me.getPixelForDecimal((index - me._startValue) / me._valueRange); + }, + + getPixelForTick: function(index) { + var ticks = this.ticks; + return index < 0 || index > ticks.length - 1 + ? null + : this.getPixelForValue(ticks[index], index + this.minIndex); + }, + + getValueForPixel: function(pixel) { + var me = this; + var value = Math.round(me._startValue + me.getDecimalForPixel(pixel) * me._valueRange); + return Math.min(Math.max(value, 0), me.ticks.length - 1); + }, + + getBasePixel: function() { + return this.bottom; + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults = defaultConfig; +scale_category._defaults = _defaults; - ctx.restore(); - } +var noop = helpers$1.noop; +var isNullOrUndef$2 = helpers$1.isNullOrUndef; + +/** + * Generate a set of linear ticks + * @param generationOptions the options used to generate the ticks + * @param dataRange the range of the data + * @returns {number[]} array of tick values + */ +function generateTicks(generationOptions, dataRange) { + var ticks = []; + // To get a "nice" value for the tick spacing, we will use the appropriately named + // "nice number" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks + // for details. + + var MIN_SPACING = 1e-14; + var stepSize = generationOptions.stepSize; + var unit = stepSize || 1; + var maxNumSpaces = generationOptions.maxTicks - 1; + var min = generationOptions.min; + var max = generationOptions.max; + var precision = generationOptions.precision; + var rmin = dataRange.min; + var rmax = dataRange.max; + var spacing = helpers$1.niceNum((rmax - rmin) / maxNumSpaces / unit) * unit; + var factor, niceMin, niceMax, numSpaces; + + // Beyond MIN_SPACING floating point numbers being to lose precision + // such that we can't do the math necessary to generate ticks + if (spacing < MIN_SPACING && isNullOrUndef$2(min) && isNullOrUndef$2(max)) { + return [rmin, rmax]; + } + + numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing); + if (numSpaces > maxNumSpaces) { + // If the calculated num of spaces exceeds maxNumSpaces, recalculate it + spacing = helpers$1.niceNum(numSpaces * spacing / maxNumSpaces / unit) * unit; + } + + if (stepSize || isNullOrUndef$2(precision)) { + // If a precision is not specified, calculate factor based on spacing + factor = Math.pow(10, helpers$1._decimalPlaces(spacing)); + } else { + // If the user specified a precision, round to that number of decimal places + factor = Math.pow(10, precision); + spacing = Math.ceil(spacing * factor) / factor; + } + + niceMin = Math.floor(rmin / spacing) * spacing; + niceMax = Math.ceil(rmax / spacing) * spacing; + + // If min, max and stepSize is set and they make an evenly spaced scale use it. + if (stepSize) { + // If very close to our whole number, use it. + if (!isNullOrUndef$2(min) && helpers$1.almostWhole(min / spacing, spacing / 1000)) { + niceMin = min; + } + if (!isNullOrUndef$2(max) && helpers$1.almostWhole(max / spacing, spacing / 1000)) { + niceMax = max; + } + } + + numSpaces = (niceMax - niceMin) / spacing; + // If very close to our rounded value, use it. + if (helpers$1.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) { + numSpaces = Math.round(numSpaces); + } else { + numSpaces = Math.ceil(numSpaces); + } + + niceMin = Math.round(niceMin * factor) / factor; + niceMax = Math.round(niceMax * factor) / factor; + ticks.push(isNullOrUndef$2(min) ? niceMin : min); + for (var j = 1; j < numSpaces; ++j) { + ticks.push(Math.round((niceMin + j * spacing) * factor) / factor); + } + ticks.push(isNullOrUndef$2(max) ? niceMax : max); + + return ticks; +} + +var scale_linearbase = core_scale.extend({ + getRightValue: function(value) { + if (typeof value === 'string') { + return +value; + } + return core_scale.prototype.getRightValue.call(this, value); + }, + + handleTickRangeOptions: function() { + var me = this; + var opts = me.options; + var tickOpts = opts.ticks; + + // If we are forcing it to begin at 0, but 0 will already be rendered on the chart, + // do nothing since that would make the chart weird. If the user really wants a weird chart + // axis, they can manually override it + if (tickOpts.beginAtZero) { + var minSign = helpers$1.sign(me.min); + var maxSign = helpers$1.sign(me.max); + + if (minSign < 0 && maxSign < 0) { + // move the top up to 0 + me.max = 0; + } else if (minSign > 0 && maxSign > 0) { + // move the bottom down to 0 + me.min = 0; + } + } + + var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined; + var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined; + + if (tickOpts.min !== undefined) { + me.min = tickOpts.min; + } else if (tickOpts.suggestedMin !== undefined) { + if (me.min === null) { + me.min = tickOpts.suggestedMin; + } else { + me.min = Math.min(me.min, tickOpts.suggestedMin); + } + } + + if (tickOpts.max !== undefined) { + me.max = tickOpts.max; + } else if (tickOpts.suggestedMax !== undefined) { + if (me.max === null) { + me.max = tickOpts.suggestedMax; + } else { + me.max = Math.max(me.max, tickOpts.suggestedMax); + } + } + + if (setMin !== setMax) { + // We set the min or the max but not both. + // So ensure that our range is good + // Inverted or 0 length range can happen when + // ticks.min is set, and no datasets are visible + if (me.min >= me.max) { + if (setMin) { + me.max = me.min + 1; + } else { + me.min = me.max - 1; + } + } + } + + if (me.min === me.max) { + me.max++; + + if (!tickOpts.beginAtZero) { + me.min--; + } + } + }, + + getTickLimit: function() { + var me = this; + var tickOpts = me.options.ticks; + var stepSize = tickOpts.stepSize; + var maxTicksLimit = tickOpts.maxTicksLimit; + var maxTicks; + + if (stepSize) { + maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1; + } else { + maxTicks = me._computeTickLimit(); + maxTicksLimit = maxTicksLimit || 11; + } + + if (maxTicksLimit) { + maxTicks = Math.min(maxTicksLimit, maxTicks); + } + + return maxTicks; + }, + + _computeTickLimit: function() { + return Number.POSITIVE_INFINITY; + }, + + handleDirectionalChanges: noop, + + buildTicks: function() { + var me = this; + var opts = me.options; + var tickOpts = opts.ticks; + + // Figure out what the max number of ticks we can support it is based on the size of + // the axis area. For now, we say that the minimum tick spacing in pixels must be 40 + // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on + // the graph. Make sure we always have at least 2 ticks + var maxTicks = me.getTickLimit(); + maxTicks = Math.max(2, maxTicks); + + var numericGeneratorOptions = { + maxTicks: maxTicks, + min: tickOpts.min, + max: tickOpts.max, + precision: tickOpts.precision, + stepSize: helpers$1.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize) + }; + var ticks = me.ticks = generateTicks(numericGeneratorOptions, me); + + me.handleDirectionalChanges(); + + // At this point, we need to update our max and min given the tick values since we have expanded the + // range of the scale + me.max = helpers$1.max(ticks); + me.min = helpers$1.min(ticks); + + if (tickOpts.reverse) { + ticks.reverse(); + + me.start = me.max; + me.end = me.min; + } else { + me.start = me.min; + me.end = me.max; + } + }, + + convertTicksToLabels: function() { + var me = this; + me.ticksAsNumbers = me.ticks.slice(); + me.zeroLineIndex = me.ticks.indexOf(0); + + core_scale.prototype.convertTicksToLabels.call(me); + }, + + _configure: function() { + var me = this; + var ticks = me.getTicks(); + var start = me.min; + var end = me.max; + var offset; + + core_scale.prototype._configure.call(me); + + if (me.options.offset && ticks.length) { + offset = (end - start) / Math.max(ticks.length - 1, 1) / 2; + start -= offset; + end += offset; + } + me._startValue = start; + me._endValue = end; + me._valueRange = end - start; + } }); -function createNewTitleBlockAndAttach(chart, titleOpts) { - var title = new Title({ - ctx: chart.ctx, - options: titleOpts, - chart: chart - }); +var defaultConfig$1 = { + position: 'left', + ticks: { + callback: core_ticks.formatters.linear + } +}; + +var DEFAULT_MIN = 0; +var DEFAULT_MAX = 1; + +function getOrCreateStack(stacks, stacked, meta) { + var key = [ + meta.type, + // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined + stacked === undefined && meta.stack === undefined ? meta.index : '', + meta.stack + ].join('.'); + + if (stacks[key] === undefined) { + stacks[key] = { + pos: [], + neg: [] + }; + } + + return stacks[key]; +} + +function stackData(scale, stacks, meta, data) { + var opts = scale.options; + var stacked = opts.stacked; + var stack = getOrCreateStack(stacks, stacked, meta); + var pos = stack.pos; + var neg = stack.neg; + var ilen = data.length; + var i, value; + + for (i = 0; i < ilen; ++i) { + value = scale._parseValue(data[i]); + if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden) { + continue; + } + + pos[i] = pos[i] || 0; + neg[i] = neg[i] || 0; + + if (opts.relativePoints) { + pos[i] = 100; + } else if (value.min < 0 || value.max < 0) { + neg[i] += value.min; + } else { + pos[i] += value.max; + } + } +} + +function updateMinMax(scale, meta, data) { + var ilen = data.length; + var i, value; + + for (i = 0; i < ilen; ++i) { + value = scale._parseValue(data[i]); + if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden) { + continue; + } + + scale.min = Math.min(scale.min, value.min); + scale.max = Math.max(scale.max, value.max); + } +} + +var scale_linear = scale_linearbase.extend({ + determineDataLimits: function() { + var me = this; + var opts = me.options; + var chart = me.chart; + var datasets = chart.data.datasets; + var metasets = me._getMatchingVisibleMetas(); + var hasStacks = opts.stacked; + var stacks = {}; + var ilen = metasets.length; + var i, meta, data, values; + + me.min = Number.POSITIVE_INFINITY; + me.max = Number.NEGATIVE_INFINITY; + + if (hasStacks === undefined) { + for (i = 0; !hasStacks && i < ilen; ++i) { + meta = metasets[i]; + hasStacks = meta.stack !== undefined; + } + } + + for (i = 0; i < ilen; ++i) { + meta = metasets[i]; + data = datasets[meta.index].data; + if (hasStacks) { + stackData(me, stacks, meta, data); + } else { + updateMinMax(me, meta, data); + } + } + + helpers$1.each(stacks, function(stackValues) { + values = stackValues.pos.concat(stackValues.neg); + me.min = Math.min(me.min, helpers$1.min(values)); + me.max = Math.max(me.max, helpers$1.max(values)); + }); + + me.min = helpers$1.isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN; + me.max = helpers$1.isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX; + + // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero + me.handleTickRangeOptions(); + }, + + // Returns the maximum number of ticks based on the scale dimension + _computeTickLimit: function() { + var me = this; + var tickFont; + + if (me.isHorizontal()) { + return Math.ceil(me.width / 40); + } + tickFont = helpers$1.options._parseFont(me.options.ticks); + return Math.ceil(me.height / tickFont.lineHeight); + }, + + // Called after the ticks are built. We need + handleDirectionalChanges: function() { + if (!this.isHorizontal()) { + // We are in a vertical orientation. The top value is the highest. So reverse the array + this.ticks.reverse(); + } + }, + + getLabelForIndex: function(index, datasetIndex) { + return this._getScaleLabel(this.chart.data.datasets[datasetIndex].data[index]); + }, + + // Utils + getPixelForValue: function(value) { + var me = this; + return me.getPixelForDecimal((+me.getRightValue(value) - me._startValue) / me._valueRange); + }, + + getValueForPixel: function(pixel) { + return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange; + }, + + getPixelForTick: function(index) { + var ticks = this.ticksAsNumbers; + if (index < 0 || index > ticks.length - 1) { + return null; + } + return this.getPixelForValue(ticks[index]); + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults$1 = defaultConfig$1; +scale_linear._defaults = _defaults$1; - core_layouts.configure(chart, title, titleOpts); - core_layouts.addBox(chart, title); - chart.titleBlock = title; -} +var valueOrDefault$b = helpers$1.valueOrDefault; +var log10 = helpers$1.math.log10; + +/** + * Generate a set of logarithmic ticks + * @param generationOptions the options used to generate the ticks + * @param dataRange the range of the data + * @returns {number[]} array of tick values + */ +function generateTicks$1(generationOptions, dataRange) { + var ticks = []; + + var tickVal = valueOrDefault$b(generationOptions.min, Math.pow(10, Math.floor(log10(dataRange.min)))); + + var endExp = Math.floor(log10(dataRange.max)); + var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp)); + var exp, significand; + + if (tickVal === 0) { + exp = Math.floor(log10(dataRange.minNotZero)); + significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp)); + + ticks.push(tickVal); + tickVal = significand * Math.pow(10, exp); + } else { + exp = Math.floor(log10(tickVal)); + significand = Math.floor(tickVal / Math.pow(10, exp)); + } + var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1; + + do { + ticks.push(tickVal); + + ++significand; + if (significand === 10) { + significand = 1; + ++exp; + precision = exp >= 0 ? 1 : precision; + } + + tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision; + } while (exp < endExp || (exp === endExp && significand < endSignificand)); + + var lastTick = valueOrDefault$b(generationOptions.max, tickVal); + ticks.push(lastTick); + + return ticks; +} + +var defaultConfig$2 = { + position: 'left', + + // label settings + ticks: { + callback: core_ticks.formatters.logarithmic + } +}; + +// TODO(v3): change this to positiveOrDefault +function nonNegativeOrDefault(value, defaultValue) { + return helpers$1.isFinite(value) && value >= 0 ? value : defaultValue; +} + +var scale_logarithmic = core_scale.extend({ + determineDataLimits: function() { + var me = this; + var opts = me.options; + var chart = me.chart; + var datasets = chart.data.datasets; + var isHorizontal = me.isHorizontal(); + function IDMatches(meta) { + return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id; + } + var datasetIndex, meta, value, data, i, ilen; + + // Calculate Range + me.min = Number.POSITIVE_INFINITY; + me.max = Number.NEGATIVE_INFINITY; + me.minNotZero = Number.POSITIVE_INFINITY; + + var hasStacks = opts.stacked; + if (hasStacks === undefined) { + for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) { + meta = chart.getDatasetMeta(datasetIndex); + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) && + meta.stack !== undefined) { + hasStacks = true; + break; + } + } + } + + if (opts.stacked || hasStacks) { + var valuesPerStack = {}; + + for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) { + meta = chart.getDatasetMeta(datasetIndex); + var key = [ + meta.type, + // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined + ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''), + meta.stack + ].join('.'); + + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { + if (valuesPerStack[key] === undefined) { + valuesPerStack[key] = []; + } + + data = datasets[datasetIndex].data; + for (i = 0, ilen = data.length; i < ilen; i++) { + var values = valuesPerStack[key]; + value = me._parseValue(data[i]); + // invalid, hidden and negative values are ignored + if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden || value.min < 0 || value.max < 0) { + continue; + } + values[i] = values[i] || 0; + values[i] += value.max; + } + } + } + + helpers$1.each(valuesPerStack, function(valuesForType) { + if (valuesForType.length > 0) { + var minVal = helpers$1.min(valuesForType); + var maxVal = helpers$1.max(valuesForType); + me.min = Math.min(me.min, minVal); + me.max = Math.max(me.max, maxVal); + } + }); + + } else { + for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) { + meta = chart.getDatasetMeta(datasetIndex); + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { + data = datasets[datasetIndex].data; + for (i = 0, ilen = data.length; i < ilen; i++) { + value = me._parseValue(data[i]); + // invalid, hidden and negative values are ignored + if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden || value.min < 0 || value.max < 0) { + continue; + } + + me.min = Math.min(value.min, me.min); + me.max = Math.max(value.max, me.max); + + if (value.min !== 0) { + me.minNotZero = Math.min(value.min, me.minNotZero); + } + } + } + } + } + + me.min = helpers$1.isFinite(me.min) ? me.min : null; + me.max = helpers$1.isFinite(me.max) ? me.max : null; + me.minNotZero = helpers$1.isFinite(me.minNotZero) ? me.minNotZero : null; + + // Common base implementation to handle ticks.min, ticks.max + this.handleTickRangeOptions(); + }, + + handleTickRangeOptions: function() { + var me = this; + var tickOpts = me.options.ticks; + var DEFAULT_MIN = 1; + var DEFAULT_MAX = 10; + + me.min = nonNegativeOrDefault(tickOpts.min, me.min); + me.max = nonNegativeOrDefault(tickOpts.max, me.max); + + if (me.min === me.max) { + if (me.min !== 0 && me.min !== null) { + me.min = Math.pow(10, Math.floor(log10(me.min)) - 1); + me.max = Math.pow(10, Math.floor(log10(me.max)) + 1); + } else { + me.min = DEFAULT_MIN; + me.max = DEFAULT_MAX; + } + } + if (me.min === null) { + me.min = Math.pow(10, Math.floor(log10(me.max)) - 1); + } + if (me.max === null) { + me.max = me.min !== 0 + ? Math.pow(10, Math.floor(log10(me.min)) + 1) + : DEFAULT_MAX; + } + if (me.minNotZero === null) { + if (me.min > 0) { + me.minNotZero = me.min; + } else if (me.max < 1) { + me.minNotZero = Math.pow(10, Math.floor(log10(me.max))); + } else { + me.minNotZero = DEFAULT_MIN; + } + } + }, + + buildTicks: function() { + var me = this; + var tickOpts = me.options.ticks; + var reverse = !me.isHorizontal(); + + var generationOptions = { + min: nonNegativeOrDefault(tickOpts.min), + max: nonNegativeOrDefault(tickOpts.max) + }; + var ticks = me.ticks = generateTicks$1(generationOptions, me); + + // At this point, we need to update our max and min given the tick values since we have expanded the + // range of the scale + me.max = helpers$1.max(ticks); + me.min = helpers$1.min(ticks); + + if (tickOpts.reverse) { + reverse = !reverse; + me.start = me.max; + me.end = me.min; + } else { + me.start = me.min; + me.end = me.max; + } + if (reverse) { + ticks.reverse(); + } + }, + + convertTicksToLabels: function() { + this.tickValues = this.ticks.slice(); + + core_scale.prototype.convertTicksToLabels.call(this); + }, + + // Get the correct tooltip label + getLabelForIndex: function(index, datasetIndex) { + return this._getScaleLabel(this.chart.data.datasets[datasetIndex].data[index]); + }, + + getPixelForTick: function(index) { + var ticks = this.tickValues; + if (index < 0 || index > ticks.length - 1) { + return null; + } + return this.getPixelForValue(ticks[index]); + }, + + /** + * Returns the value of the first tick. + * @param {number} value - The minimum not zero value. + * @return {number} The first tick value. + * @private + */ + _getFirstTickValue: function(value) { + var exp = Math.floor(log10(value)); + var significand = Math.floor(value / Math.pow(10, exp)); + + return significand * Math.pow(10, exp); + }, + + _configure: function() { + var me = this; + var start = me.min; + var offset = 0; + + core_scale.prototype._configure.call(me); + + if (start === 0) { + start = me._getFirstTickValue(me.minNotZero); + offset = valueOrDefault$b(me.options.ticks.fontSize, core_defaults.global.defaultFontSize) / me._length; + } + + me._startValue = log10(start); + me._valueOffset = offset; + me._valueRange = (log10(me.max) - log10(start)) / (1 - offset); + }, + + getPixelForValue: function(value) { + var me = this; + var decimal = 0; + + value = +me.getRightValue(value); + + if (value > me.min && value > 0) { + decimal = (log10(value) - me._startValue) / me._valueRange + me._valueOffset; + } + return me.getPixelForDecimal(decimal); + }, + + getValueForPixel: function(pixel) { + var me = this; + var decimal = me.getDecimalForPixel(pixel); + return decimal === 0 && me.min === 0 + ? 0 + : Math.pow(10, me._startValue + (decimal - me._valueOffset) * me._valueRange); + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults$2 = defaultConfig$2; +scale_logarithmic._defaults = _defaults$2; -var plugin_title = { - id: 'title', +var valueOrDefault$c = helpers$1.valueOrDefault; +var valueAtIndexOrDefault$1 = helpers$1.valueAtIndexOrDefault; +var resolve$4 = helpers$1.options.resolve; + +var defaultConfig$3 = { + display: true, + + // Boolean - Whether to animate scaling the chart from the centre + animate: true, + position: 'chartArea', + + angleLines: { + display: true, + color: 'rgba(0,0,0,0.1)', + lineWidth: 1, + borderDash: [], + borderDashOffset: 0.0 + }, + + gridLines: { + circular: false + }, + + // label settings + ticks: { + // Boolean - Show a backdrop to the scale label + showLabelBackdrop: true, + + // String - The colour of the label backdrop + backdropColor: 'rgba(255,255,255,0.75)', + + // Number - The backdrop padding above & below the label in pixels + backdropPaddingY: 2, + + // Number - The backdrop padding to the side of the label in pixels + backdropPaddingX: 2, + + callback: core_ticks.formatters.linear + }, + + pointLabels: { + // Boolean - if true, show point labels + display: true, + + // Number - Point label font size in pixels + fontSize: 10, + + // Function - Used to convert point labels + callback: function(label) { + return label; + } + } +}; + +function getTickBackdropHeight(opts) { + var tickOpts = opts.ticks; + + if (tickOpts.display && opts.display) { + return valueOrDefault$c(tickOpts.fontSize, core_defaults.global.defaultFontSize) + tickOpts.backdropPaddingY * 2; + } + return 0; +} + +function measureLabelSize(ctx, lineHeight, label) { + if (helpers$1.isArray(label)) { + return { + w: helpers$1.longestText(ctx, ctx.font, label), + h: label.length * lineHeight + }; + } + + return { + w: ctx.measureText(label).width, + h: lineHeight + }; +} + +function determineLimits(angle, pos, size, min, max) { + if (angle === min || angle === max) { + return { + start: pos - (size / 2), + end: pos + (size / 2) + }; + } else if (angle < min || angle > max) { + return { + start: pos - size, + end: pos + }; + } + + return { + start: pos, + end: pos + size + }; +} + +/** + * Helper function to fit a radial linear scale with point labels + */ +function fitWithPointLabels(scale) { + + // Right, this is really confusing and there is a lot of maths going on here + // The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9 + // + // Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif + // + // Solution: + // + // We assume the radius of the polygon is half the size of the canvas at first + // at each index we check if the text overlaps. + // + // Where it does, we store that angle and that index. + // + // After finding the largest index and angle we calculate how much we need to remove + // from the shape radius to move the point inwards by that x. + // + // We average the left and right distances to get the maximum shape radius that can fit in the box + // along with labels. + // + // Once we have that, we can find the centre point for the chart, by taking the x text protrusion + // on each side, removing that from the size, halving it and adding the left x protrusion width. + // + // This will mean we have a shape fitted to the canvas, as large as it can be with the labels + // and position it in the most space efficient manner + // + // https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif + + var plFont = helpers$1.options._parseFont(scale.options.pointLabels); + + // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width. + // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points + var furthestLimits = { + l: 0, + r: scale.width, + t: 0, + b: scale.height - scale.paddingTop + }; + var furthestAngles = {}; + var i, textSize, pointPosition; + + scale.ctx.font = plFont.string; + scale._pointLabelSizes = []; + + var valueCount = scale.chart.data.labels.length; + for (i = 0; i < valueCount; i++) { + pointPosition = scale.getPointPosition(i, scale.drawingArea + 5); + textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale.pointLabels[i]); + scale._pointLabelSizes[i] = textSize; + + // Add quarter circle to make degree 0 mean top of circle + var angleRadians = scale.getIndexAngle(i); + var angle = helpers$1.toDegrees(angleRadians) % 360; + var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180); + var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270); + + if (hLimits.start < furthestLimits.l) { + furthestLimits.l = hLimits.start; + furthestAngles.l = angleRadians; + } + + if (hLimits.end > furthestLimits.r) { + furthestLimits.r = hLimits.end; + furthestAngles.r = angleRadians; + } + + if (vLimits.start < furthestLimits.t) { + furthestLimits.t = vLimits.start; + furthestAngles.t = angleRadians; + } + + if (vLimits.end > furthestLimits.b) { + furthestLimits.b = vLimits.end; + furthestAngles.b = angleRadians; + } + } + + scale.setReductions(scale.drawingArea, furthestLimits, furthestAngles); +} + +function getTextAlignForAngle(angle) { + if (angle === 0 || angle === 180) { + return 'center'; + } else if (angle < 180) { + return 'left'; + } + + return 'right'; +} + +function fillText(ctx, text, position, lineHeight) { + var y = position.y + lineHeight / 2; + var i, ilen; + + if (helpers$1.isArray(text)) { + for (i = 0, ilen = text.length; i < ilen; ++i) { + ctx.fillText(text[i], position.x, y); + y += lineHeight; + } + } else { + ctx.fillText(text, position.x, y); + } +} + +function adjustPointPositionForLabelHeight(angle, textSize, position) { + if (angle === 90 || angle === 270) { + position.y -= (textSize.h / 2); + } else if (angle > 270 || angle < 90) { + position.y -= textSize.h; + } +} + +function drawPointLabels(scale) { + var ctx = scale.ctx; + var opts = scale.options; + var pointLabelOpts = opts.pointLabels; + var tickBackdropHeight = getTickBackdropHeight(opts); + var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max); + var plFont = helpers$1.options._parseFont(pointLabelOpts); + + ctx.save(); + + ctx.font = plFont.string; + ctx.textBaseline = 'middle'; + + for (var i = scale.chart.data.labels.length - 1; i >= 0; i--) { + // Extra pixels out for some label spacing + var extra = (i === 0 ? tickBackdropHeight / 2 : 0); + var pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + 5); + + // Keep this in loop since we may support array properties here + var pointLabelFontColor = valueAtIndexOrDefault$1(pointLabelOpts.fontColor, i, core_defaults.global.defaultFontColor); + ctx.fillStyle = pointLabelFontColor; + + var angleRadians = scale.getIndexAngle(i); + var angle = helpers$1.toDegrees(angleRadians); + ctx.textAlign = getTextAlignForAngle(angle); + adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition); + fillText(ctx, scale.pointLabels[i], pointLabelPosition, plFont.lineHeight); + } + ctx.restore(); +} + +function drawRadiusLine(scale, gridLineOpts, radius, index) { + var ctx = scale.ctx; + var circular = gridLineOpts.circular; + var valueCount = scale.chart.data.labels.length; + var lineColor = valueAtIndexOrDefault$1(gridLineOpts.color, index - 1); + var lineWidth = valueAtIndexOrDefault$1(gridLineOpts.lineWidth, index - 1); + var pointPosition; + + if ((!circular && !valueCount) || !lineColor || !lineWidth) { + return; + } + + ctx.save(); + ctx.strokeStyle = lineColor; + ctx.lineWidth = lineWidth; + if (ctx.setLineDash) { + ctx.setLineDash(gridLineOpts.borderDash || []); + ctx.lineDashOffset = gridLineOpts.borderDashOffset || 0.0; + } + + ctx.beginPath(); + if (circular) { + // Draw circular arcs between the points + ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2); + } else { + // Draw straight lines connecting each index + pointPosition = scale.getPointPosition(0, radius); + ctx.moveTo(pointPosition.x, pointPosition.y); + + for (var i = 1; i < valueCount; i++) { + pointPosition = scale.getPointPosition(i, radius); + ctx.lineTo(pointPosition.x, pointPosition.y); + } + } + ctx.closePath(); + ctx.stroke(); + ctx.restore(); +} + +function numberOrZero(param) { + return helpers$1.isNumber(param) ? param : 0; +} + +var scale_radialLinear = scale_linearbase.extend({ + setDimensions: function() { + var me = this; + + // Set the unconstrained dimension before label rotation + me.width = me.maxWidth; + me.height = me.maxHeight; + me.paddingTop = getTickBackdropHeight(me.options) / 2; + me.xCenter = Math.floor(me.width / 2); + me.yCenter = Math.floor((me.height - me.paddingTop) / 2); + me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2; + }, + + determineDataLimits: function() { + var me = this; + var chart = me.chart; + var min = Number.POSITIVE_INFINITY; + var max = Number.NEGATIVE_INFINITY; + + helpers$1.each(chart.data.datasets, function(dataset, datasetIndex) { + if (chart.isDatasetVisible(datasetIndex)) { + var meta = chart.getDatasetMeta(datasetIndex); + + helpers$1.each(dataset.data, function(rawValue, index) { + var value = +me.getRightValue(rawValue); + if (isNaN(value) || meta.data[index].hidden) { + return; + } + + min = Math.min(value, min); + max = Math.max(value, max); + }); + } + }); + + me.min = (min === Number.POSITIVE_INFINITY ? 0 : min); + me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max); + + // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero + me.handleTickRangeOptions(); + }, + + // Returns the maximum number of ticks based on the scale dimension + _computeTickLimit: function() { + return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options)); + }, + + convertTicksToLabels: function() { + var me = this; + + scale_linearbase.prototype.convertTicksToLabels.call(me); + + // Point labels + me.pointLabels = me.chart.data.labels.map(function() { + var label = helpers$1.callback(me.options.pointLabels.callback, arguments, me); + return label || label === 0 ? label : ''; + }); + }, + + getLabelForIndex: function(index, datasetIndex) { + return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]); + }, + + fit: function() { + var me = this; + var opts = me.options; + + if (opts.display && opts.pointLabels.display) { + fitWithPointLabels(me); + } else { + me.setCenterPoint(0, 0, 0, 0); + } + }, + + /** + * Set radius reductions and determine new radius and center point + * @private + */ + setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) { + var me = this; + var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l); + var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r); + var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t); + var radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b); + + radiusReductionLeft = numberOrZero(radiusReductionLeft); + radiusReductionRight = numberOrZero(radiusReductionRight); + radiusReductionTop = numberOrZero(radiusReductionTop); + radiusReductionBottom = numberOrZero(radiusReductionBottom); + + me.drawingArea = Math.min( + Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2), + Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2)); + me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom); + }, + + setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) { + var me = this; + var maxRight = me.width - rightMovement - me.drawingArea; + var maxLeft = leftMovement + me.drawingArea; + var maxTop = topMovement + me.drawingArea; + var maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea; + + me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left); + me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop); + }, + + getIndexAngle: function(index) { + var chart = this.chart; + var angleMultiplier = 360 / chart.data.labels.length; + var options = chart.options || {}; + var startAngle = options.startAngle || 0; + + // Start from the top instead of right, so remove a quarter of the circle + var angle = (index * angleMultiplier + startAngle) % 360; + + return (angle < 0 ? angle + 360 : angle) * Math.PI * 2 / 360; + }, + + getDistanceFromCenterForValue: function(value) { + var me = this; + + if (helpers$1.isNullOrUndef(value)) { + return NaN; + } + + // Take into account half font size + the yPadding of the top value + var scalingFactor = me.drawingArea / (me.max - me.min); + if (me.options.ticks.reverse) { + return (me.max - value) * scalingFactor; + } + return (value - me.min) * scalingFactor; + }, + + getPointPosition: function(index, distanceFromCenter) { + var me = this; + var thisAngle = me.getIndexAngle(index) - (Math.PI / 2); + return { + x: Math.cos(thisAngle) * distanceFromCenter + me.xCenter, + y: Math.sin(thisAngle) * distanceFromCenter + me.yCenter + }; + }, + + getPointPositionForValue: function(index, value) { + return this.getPointPosition(index, this.getDistanceFromCenterForValue(value)); + }, + + getBasePosition: function(index) { + var me = this; + var min = me.min; + var max = me.max; + + return me.getPointPositionForValue(index || 0, + me.beginAtZero ? 0 : + min < 0 && max < 0 ? max : + min > 0 && max > 0 ? min : + 0); + }, + + /** + * @private + */ + _drawGrid: function() { + var me = this; + var ctx = me.ctx; + var opts = me.options; + var gridLineOpts = opts.gridLines; + var angleLineOpts = opts.angleLines; + var lineWidth = valueOrDefault$c(angleLineOpts.lineWidth, gridLineOpts.lineWidth); + var lineColor = valueOrDefault$c(angleLineOpts.color, gridLineOpts.color); + var i, offset, position; + + if (opts.pointLabels.display) { + drawPointLabels(me); + } + + if (gridLineOpts.display) { + helpers$1.each(me.ticks, function(label, index) { + if (index !== 0) { + offset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]); + drawRadiusLine(me, gridLineOpts, offset, index); + } + }); + } + + if (angleLineOpts.display && lineWidth && lineColor) { + ctx.save(); + ctx.lineWidth = lineWidth; + ctx.strokeStyle = lineColor; + if (ctx.setLineDash) { + ctx.setLineDash(resolve$4([angleLineOpts.borderDash, gridLineOpts.borderDash, []])); + ctx.lineDashOffset = resolve$4([angleLineOpts.borderDashOffset, gridLineOpts.borderDashOffset, 0.0]); + } + + for (i = me.chart.data.labels.length - 1; i >= 0; i--) { + offset = me.getDistanceFromCenterForValue(opts.ticks.reverse ? me.min : me.max); + position = me.getPointPosition(i, offset); + ctx.beginPath(); + ctx.moveTo(me.xCenter, me.yCenter); + ctx.lineTo(position.x, position.y); + ctx.stroke(); + } + + ctx.restore(); + } + }, + + /** + * @private + */ + _drawLabels: function() { + var me = this; + var ctx = me.ctx; + var opts = me.options; + var tickOpts = opts.ticks; + + if (!tickOpts.display) { + return; + } + + var startAngle = me.getIndexAngle(0); + var tickFont = helpers$1.options._parseFont(tickOpts); + var tickFontColor = valueOrDefault$c(tickOpts.fontColor, core_defaults.global.defaultFontColor); + var offset, width; + + ctx.save(); + ctx.font = tickFont.string; + ctx.translate(me.xCenter, me.yCenter); + ctx.rotate(startAngle); + ctx.textAlign = 'center'; + ctx.textBaseline = 'middle'; + + helpers$1.each(me.ticks, function(label, index) { + if (index === 0 && !tickOpts.reverse) { + return; + } + + offset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]); + + if (tickOpts.showLabelBackdrop) { + width = ctx.measureText(label).width; + ctx.fillStyle = tickOpts.backdropColor; + + ctx.fillRect( + -width / 2 - tickOpts.backdropPaddingX, + -offset - tickFont.size / 2 - tickOpts.backdropPaddingY, + width + tickOpts.backdropPaddingX * 2, + tickFont.size + tickOpts.backdropPaddingY * 2 + ); + } + + ctx.fillStyle = tickFontColor; + ctx.fillText(label, 0, -offset); + }); + + ctx.restore(); + }, + + /** + * @private + */ + _drawTitle: helpers$1.noop +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults$3 = defaultConfig$3; +scale_radialLinear._defaults = _defaults$3; - /** - * Backward compatibility: since 2.1.5, the title is registered as a plugin, making - * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of - * the plugin, which one will be re-exposed in the chart.js file. - * https://github.com/chartjs/Chart.js/pull/2640 - * @private - */ - _element: Title, +var deprecated$1 = helpers$1._deprecated; +var resolve$5 = helpers$1.options.resolve; +var valueOrDefault$d = helpers$1.valueOrDefault; + +// Integer constants are from the ES6 spec. +var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991; +var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991; + +var INTERVALS = { + millisecond: { + common: true, + size: 1, + steps: 1000 + }, + second: { + common: true, + size: 1000, + steps: 60 + }, + minute: { + common: true, + size: 60000, + steps: 60 + }, + hour: { + common: true, + size: 3600000, + steps: 24 + }, + day: { + common: true, + size: 86400000, + steps: 30 + }, + week: { + common: false, + size: 604800000, + steps: 4 + }, + month: { + common: true, + size: 2.628e9, + steps: 12 + }, + quarter: { + common: false, + size: 7.884e9, + steps: 4 + }, + year: { + common: true, + size: 3.154e10 + } +}; + +var UNITS = Object.keys(INTERVALS); + +function sorter(a, b) { + return a - b; +} + +function arrayUnique(items) { + var hash = {}; + var out = []; + var i, ilen, item; + + for (i = 0, ilen = items.length; i < ilen; ++i) { + item = items[i]; + if (!hash[item]) { + hash[item] = true; + out.push(item); + } + } + + return out; +} + +function getMin(options) { + return helpers$1.valueOrDefault(options.time.min, options.ticks.min); +} + +function getMax(options) { + return helpers$1.valueOrDefault(options.time.max, options.ticks.max); +} + +/** + * Returns an array of {time, pos} objects used to interpolate a specific `time` or position + * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is + * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other + * extremity (left + width or top + height). Note that it would be more optimized to directly + * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need + * to create the lookup table. The table ALWAYS contains at least two items: min and max. + * + * @param {number[]} timestamps - timestamps sorted from lowest to highest. + * @param {string} distribution - If 'linear', timestamps will be spread linearly along the min + * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}. + * If 'series', timestamps will be positioned at the same distance from each other. In this + * case, only timestamps that break the time linearity are registered, meaning that in the + * best case, all timestamps are linear, the table contains only min and max. + */ +function buildLookupTable(timestamps, min, max, distribution) { + if (distribution === 'linear' || !timestamps.length) { + return [ + {time: min, pos: 0}, + {time: max, pos: 1} + ]; + } + + var table = []; + var items = [min]; + var i, ilen, prev, curr, next; + + for (i = 0, ilen = timestamps.length; i < ilen; ++i) { + curr = timestamps[i]; + if (curr > min && curr < max) { + items.push(curr); + } + } + + items.push(max); + + for (i = 0, ilen = items.length; i < ilen; ++i) { + next = items[i + 1]; + prev = items[i - 1]; + curr = items[i]; + + // only add points that breaks the scale linearity + if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) { + table.push({time: curr, pos: i / (ilen - 1)}); + } + } + + return table; +} + +// @see adapted from https://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/ +function lookup(table, key, value) { + var lo = 0; + var hi = table.length - 1; + var mid, i0, i1; + + while (lo >= 0 && lo <= hi) { + mid = (lo + hi) >> 1; + i0 = table[mid - 1] || null; + i1 = table[mid]; + + if (!i0) { + // given value is outside table (before first item) + return {lo: null, hi: i1}; + } else if (i1[key] < value) { + lo = mid + 1; + } else if (i0[key] > value) { + hi = mid - 1; + } else { + return {lo: i0, hi: i1}; + } + } + + // given value is outside table (after last item) + return {lo: i1, hi: null}; +} + +/** + * Linearly interpolates the given source `value` using the table items `skey` values and + * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos') + * returns the position for a timestamp equal to 42. If value is out of bounds, values at + * index [0, 1] or [n - 1, n] are used for the interpolation. + */ +function interpolate$1(table, skey, sval, tkey) { + var range = lookup(table, skey, sval); + + // Note: the lookup table ALWAYS contains at least 2 items (min and max) + var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo; + var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi; + + var span = next[skey] - prev[skey]; + var ratio = span ? (sval - prev[skey]) / span : 0; + var offset = (next[tkey] - prev[tkey]) * ratio; + + return prev[tkey] + offset; +} + +function toTimestamp(scale, input) { + var adapter = scale._adapter; + var options = scale.options.time; + var parser = options.parser; + var format = parser || options.format; + var value = input; + + if (typeof parser === 'function') { + value = parser(value); + } + + // Only parse if its not a timestamp already + if (!helpers$1.isFinite(value)) { + value = typeof format === 'string' + ? adapter.parse(value, format) + : adapter.parse(value); + } + + if (value !== null) { + return +value; + } + + // Labels are in an incompatible format and no `parser` has been provided. + // The user might still use the deprecated `format` option for parsing. + if (!parser && typeof format === 'function') { + value = format(input); + + // `format` could return something else than a timestamp, if so, parse it + if (!helpers$1.isFinite(value)) { + value = adapter.parse(value); + } + } + + return value; +} + +function parse(scale, input) { + if (helpers$1.isNullOrUndef(input)) { + return null; + } + + var options = scale.options.time; + var value = toTimestamp(scale, scale.getRightValue(input)); + if (value === null) { + return value; + } + + if (options.round) { + value = +scale._adapter.startOf(value, options.round); + } + + return value; +} + +/** + * Figures out what unit results in an appropriate number of auto-generated ticks + */ +function determineUnitForAutoTicks(minUnit, min, max, capacity) { + var ilen = UNITS.length; + var i, interval, factor; + + for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) { + interval = INTERVALS[UNITS[i]]; + factor = interval.steps ? interval.steps : MAX_INTEGER; + + if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) { + return UNITS[i]; + } + } + + return UNITS[ilen - 1]; +} + +/** + * Figures out what unit to format a set of ticks with + */ +function determineUnitForFormatting(scale, numTicks, minUnit, min, max) { + var i, unit; + + for (i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) { + unit = UNITS[i]; + if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= numTicks - 1) { + return unit; + } + } + + return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0]; +} + +function determineMajorUnit(unit) { + for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) { + if (INTERVALS[UNITS[i]].common) { + return UNITS[i]; + } + } +} + +/** + * Generates a maximum of `capacity` timestamps between min and max, rounded to the + * `minor` unit using the given scale time `options`. + * Important: this method can return ticks outside the min and max range, it's the + * responsibility of the calling code to clamp values if needed. + */ +function generate(scale, min, max, capacity) { + var adapter = scale._adapter; + var options = scale.options; + var timeOpts = options.time; + var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity); + var stepSize = resolve$5([timeOpts.stepSize, timeOpts.unitStepSize, 1]); + var weekday = minor === 'week' ? timeOpts.isoWeekday : false; + var first = min; + var ticks = []; + var time; + + // For 'week' unit, handle the first day of week option + if (weekday) { + first = +adapter.startOf(first, 'isoWeek', weekday); + } + + // Align first ticks on unit + first = +adapter.startOf(first, weekday ? 'day' : minor); + + // Prevent browser from freezing in case user options request millions of milliseconds + if (adapter.diff(max, min, minor) > 100000 * stepSize) { + throw min + ' and ' + max + ' are too far apart with stepSize of ' + stepSize + ' ' + minor; + } + + for (time = first; time < max; time = +adapter.add(time, stepSize, minor)) { + ticks.push(time); + } + + if (time === max || options.bounds === 'ticks') { + ticks.push(time); + } + + return ticks; +} + +/** + * Returns the start and end offsets from edges in the form of {start, end} + * where each value is a relative width to the scale and ranges between 0 and 1. + * They add extra margins on the both sides by scaling down the original scale. + * Offsets are added when the `offset` option is true. + */ +function computeOffsets(table, ticks, min, max, options) { + var start = 0; + var end = 0; + var first, last; + + if (options.offset && ticks.length) { + first = interpolate$1(table, 'time', ticks[0], 'pos'); + if (ticks.length === 1) { + start = 1 - first; + } else { + start = (interpolate$1(table, 'time', ticks[1], 'pos') - first) / 2; + } + last = interpolate$1(table, 'time', ticks[ticks.length - 1], 'pos'); + if (ticks.length === 1) { + end = last; + } else { + end = (last - interpolate$1(table, 'time', ticks[ticks.length - 2], 'pos')) / 2; + } + } + + return {start: start, end: end, factor: 1 / (start + 1 + end)}; +} + +function setMajorTicks(scale, ticks, map, majorUnit) { + var adapter = scale._adapter; + var first = +adapter.startOf(ticks[0].value, majorUnit); + var last = ticks[ticks.length - 1].value; + var major, index; + + for (major = first; major <= last; major = +adapter.add(major, 1, majorUnit)) { + index = map[major]; + if (index >= 0) { + ticks[index].major = true; + } + } + return ticks; +} + +function ticksFromTimestamps(scale, values, majorUnit) { + var ticks = []; + var map = {}; + var ilen = values.length; + var i, value; + + for (i = 0; i < ilen; ++i) { + value = values[i]; + map[value] = i; + + ticks.push({ + value: value, + major: false + }); + } + + // We set the major ticks separately from the above loop because calling startOf for every tick + // is expensive when there is a large number of ticks + return (ilen === 0 || !majorUnit) ? ticks : setMajorTicks(scale, ticks, map, majorUnit); +} + +var defaultConfig$4 = { + position: 'bottom', + + /** + * Data distribution along the scale: + * - 'linear': data are spread according to their time (distances can vary), + * - 'series': data are spread at the same distance from each other. + * @see https://github.com/chartjs/Chart.js/pull/4507 + * @since 2.7.0 + */ + distribution: 'linear', + + /** + * Scale boundary strategy (bypassed by min/max time options) + * - `data`: make sure data are fully visible, ticks outside are removed + * - `ticks`: make sure ticks are fully visible, data outside are truncated + * @see https://github.com/chartjs/Chart.js/pull/4556 + * @since 2.7.0 + */ + bounds: 'data', + + adapters: {}, + time: { + parser: false, // false == a pattern string from https://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment + unit: false, // false == automatic or override with week, month, year, etc. + round: false, // none, or override with week, month, year, etc. + displayFormat: false, // DEPRECATED + isoWeekday: false, // override week start day - see https://momentjs.com/docs/#/get-set/iso-weekday/ + minUnit: 'millisecond', + displayFormats: {} + }, + ticks: { + autoSkip: false, + + /** + * Ticks generation input values: + * - 'auto': generates "optimal" ticks based on scale size and time options. + * - 'data': generates ticks from data (including labels from data {t|x|y} objects). + * - 'labels': generates ticks from user given `data.labels` values ONLY. + * @see https://github.com/chartjs/Chart.js/pull/4507 + * @since 2.7.0 + */ + source: 'auto', + + major: { + enabled: false + } + } +}; + +var scale_time = core_scale.extend({ + initialize: function() { + this.mergeTicksOptions(); + core_scale.prototype.initialize.call(this); + }, + + update: function() { + var me = this; + var options = me.options; + var time = options.time || (options.time = {}); + var adapter = me._adapter = new core_adapters._date(options.adapters.date); + + // DEPRECATIONS: output a message only one time per update + deprecated$1('time scale', time.format, 'time.format', 'time.parser'); + deprecated$1('time scale', time.min, 'time.min', 'ticks.min'); + deprecated$1('time scale', time.max, 'time.max', 'ticks.max'); + + // Backward compatibility: before introducing adapter, `displayFormats` was + // supposed to contain *all* unit/string pairs but this can't be resolved + // when loading the scale (adapters are loaded afterward), so let's populate + // missing formats on update + helpers$1.mergeIf(time.displayFormats, adapter.formats()); + + return core_scale.prototype.update.apply(me, arguments); + }, + + /** + * Allows data to be referenced via 't' attribute + */ + getRightValue: function(rawValue) { + if (rawValue && rawValue.t !== undefined) { + rawValue = rawValue.t; + } + return core_scale.prototype.getRightValue.call(this, rawValue); + }, + + determineDataLimits: function() { + var me = this; + var chart = me.chart; + var adapter = me._adapter; + var options = me.options; + var unit = options.time.unit || 'day'; + var min = MAX_INTEGER; + var max = MIN_INTEGER; + var timestamps = []; + var datasets = []; + var labels = []; + var i, j, ilen, jlen, data, timestamp, labelsAdded; + var dataLabels = me._getLabels(); + + for (i = 0, ilen = dataLabels.length; i < ilen; ++i) { + labels.push(parse(me, dataLabels[i])); + } + + for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { + if (chart.isDatasetVisible(i)) { + data = chart.data.datasets[i].data; + + // Let's consider that all data have the same format. + if (helpers$1.isObject(data[0])) { + datasets[i] = []; + + for (j = 0, jlen = data.length; j < jlen; ++j) { + timestamp = parse(me, data[j]); + timestamps.push(timestamp); + datasets[i][j] = timestamp; + } + } else { + datasets[i] = labels.slice(0); + if (!labelsAdded) { + timestamps = timestamps.concat(labels); + labelsAdded = true; + } + } + } else { + datasets[i] = []; + } + } + + if (labels.length) { + min = Math.min(min, labels[0]); + max = Math.max(max, labels[labels.length - 1]); + } + + if (timestamps.length) { + timestamps = ilen > 1 ? arrayUnique(timestamps).sort(sorter) : timestamps.sort(sorter); + min = Math.min(min, timestamps[0]); + max = Math.max(max, timestamps[timestamps.length - 1]); + } + + min = parse(me, getMin(options)) || min; + max = parse(me, getMax(options)) || max; + + // In case there is no valid min/max, set limits based on unit time option + min = min === MAX_INTEGER ? +adapter.startOf(Date.now(), unit) : min; + max = max === MIN_INTEGER ? +adapter.endOf(Date.now(), unit) + 1 : max; + + // Make sure that max is strictly higher than min (required by the lookup table) + me.min = Math.min(min, max); + me.max = Math.max(min + 1, max); + + // PRIVATE + me._table = []; + me._timestamps = { + data: timestamps, + datasets: datasets, + labels: labels + }; + }, + + buildTicks: function() { + var me = this; + var min = me.min; + var max = me.max; + var options = me.options; + var tickOpts = options.ticks; + var timeOpts = options.time; + var timestamps = me._timestamps; + var ticks = []; + var capacity = me.getLabelCapacity(min); + var source = tickOpts.source; + var distribution = options.distribution; + var i, ilen, timestamp; + + if (source === 'data' || (source === 'auto' && distribution === 'series')) { + timestamps = timestamps.data; + } else if (source === 'labels') { + timestamps = timestamps.labels; + } else { + timestamps = generate(me, min, max, capacity); + } + + if (options.bounds === 'ticks' && timestamps.length) { + min = timestamps[0]; + max = timestamps[timestamps.length - 1]; + } + + // Enforce limits with user min/max options + min = parse(me, getMin(options)) || min; + max = parse(me, getMax(options)) || max; + + // Remove ticks outside the min/max range + for (i = 0, ilen = timestamps.length; i < ilen; ++i) { + timestamp = timestamps[i]; + if (timestamp >= min && timestamp <= max) { + ticks.push(timestamp); + } + } + + me.min = min; + me.max = max; + + // PRIVATE + // determineUnitForFormatting relies on the number of ticks so we don't use it when + // autoSkip is enabled because we don't yet know what the final number of ticks will be + me._unit = timeOpts.unit || (tickOpts.autoSkip + ? determineUnitForAutoTicks(timeOpts.minUnit, me.min, me.max, capacity) + : determineUnitForFormatting(me, ticks.length, timeOpts.minUnit, me.min, me.max)); + me._majorUnit = !tickOpts.major.enabled || me._unit === 'year' ? undefined + : determineMajorUnit(me._unit); + me._table = buildLookupTable(me._timestamps.data, min, max, distribution); + me._offsets = computeOffsets(me._table, ticks, min, max, options); + + if (tickOpts.reverse) { + ticks.reverse(); + } + + return ticksFromTimestamps(me, ticks, me._majorUnit); + }, + + getLabelForIndex: function(index, datasetIndex) { + var me = this; + var adapter = me._adapter; + var data = me.chart.data; + var timeOpts = me.options.time; + var label = data.labels && index < data.labels.length ? data.labels[index] : ''; + var value = data.datasets[datasetIndex].data[index]; + + if (helpers$1.isObject(value)) { + label = me.getRightValue(value); + } + if (timeOpts.tooltipFormat) { + return adapter.format(toTimestamp(me, label), timeOpts.tooltipFormat); + } + if (typeof label === 'string') { + return label; + } + return adapter.format(toTimestamp(me, label), timeOpts.displayFormats.datetime); + }, + + /** + * Function to format an individual tick mark + * @private + */ + tickFormatFunction: function(time, index, ticks, format) { + var me = this; + var adapter = me._adapter; + var options = me.options; + var formats = options.time.displayFormats; + var minorFormat = formats[me._unit]; + var majorUnit = me._majorUnit; + var majorFormat = formats[majorUnit]; + var tick = ticks[index]; + var tickOpts = options.ticks; + var major = majorUnit && majorFormat && tick && tick.major; + var label = adapter.format(time, format ? format : major ? majorFormat : minorFormat); + var nestedTickOpts = major ? tickOpts.major : tickOpts.minor; + var formatter = resolve$5([ + nestedTickOpts.callback, + nestedTickOpts.userCallback, + tickOpts.callback, + tickOpts.userCallback + ]); + + return formatter ? formatter(label, index, ticks) : label; + }, + + convertTicksToLabels: function(ticks) { + var labels = []; + var i, ilen; + + for (i = 0, ilen = ticks.length; i < ilen; ++i) { + labels.push(this.tickFormatFunction(ticks[i].value, i, ticks)); + } + + return labels; + }, + + /** + * @private + */ + getPixelForOffset: function(time) { + var me = this; + var offsets = me._offsets; + var pos = interpolate$1(me._table, 'time', time, 'pos'); + return me.getPixelForDecimal((offsets.start + pos) * offsets.factor); + }, + + getPixelForValue: function(value, index, datasetIndex) { + var me = this; + var time = null; + + if (index !== undefined && datasetIndex !== undefined) { + time = me._timestamps.datasets[datasetIndex][index]; + } + + if (time === null) { + time = parse(me, value); + } + + if (time !== null) { + return me.getPixelForOffset(time); + } + }, + + getPixelForTick: function(index) { + var ticks = this.getTicks(); + return index >= 0 && index < ticks.length ? + this.getPixelForOffset(ticks[index].value) : + null; + }, + + getValueForPixel: function(pixel) { + var me = this; + var offsets = me._offsets; + var pos = me.getDecimalForPixel(pixel) / offsets.factor - offsets.end; + var time = interpolate$1(me._table, 'pos', pos, 'time'); + + // DEPRECATION, we should return time directly + return me._adapter._create(time); + }, + + /** + * @private + */ + _getLabelSize: function(label) { + var me = this; + var ticksOpts = me.options.ticks; + var tickLabelWidth = me.ctx.measureText(label).width; + var angle = helpers$1.toRadians(me.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation); + var cosRotation = Math.cos(angle); + var sinRotation = Math.sin(angle); + var tickFontSize = valueOrDefault$d(ticksOpts.fontSize, core_defaults.global.defaultFontSize); + + return { + w: (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation), + h: (tickLabelWidth * sinRotation) + (tickFontSize * cosRotation) + }; + }, + + /** + * Crude approximation of what the label width might be + * @private + */ + getLabelWidth: function(label) { + return this._getLabelSize(label).w; + }, + + /** + * @private + */ + getLabelCapacity: function(exampleTime) { + var me = this; + var timeOpts = me.options.time; + var displayFormats = timeOpts.displayFormats; + + // pick the longest format (milliseconds) for guestimation + var format = displayFormats[timeOpts.unit] || displayFormats.millisecond; + var exampleLabel = me.tickFormatFunction(exampleTime, 0, ticksFromTimestamps(me, [exampleTime], me._majorUnit), format); + var size = me._getLabelSize(exampleLabel); + var capacity = Math.floor(me.isHorizontal() ? me.width / size.w : me.height / size.h); + + if (me.options.offset) { + capacity--; + } + + return capacity > 0 ? capacity : 1; + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults$4 = defaultConfig$4; +scale_time._defaults = _defaults$4; - beforeInit: function(chart) { - var titleOpts = chart.options.title; +var scales = { + category: scale_category, + linear: scale_linear, + logarithmic: scale_logarithmic, + radialLinear: scale_radialLinear, + time: scale_time +}; - if (titleOpts) { - createNewTitleBlockAndAttach(chart, titleOpts); - } - }, +var FORMATS = { + datetime: 'MMM D, YYYY, h:mm:ss a', + millisecond: 'h:mm:ss.SSS a', + second: 'h:mm:ss a', + minute: 'h:mm a', + hour: 'hA', + day: 'MMM D', + week: 'll', + month: 'MMM YYYY', + quarter: '[Q]Q - YYYY', + year: 'YYYY' +}; + +core_adapters._date.override(typeof moment === 'function' ? { + _id: 'moment', // DEBUG ONLY + + formats: function() { + return FORMATS; + }, + + parse: function(value, format) { + if (typeof value === 'string' && typeof format === 'string') { + value = moment(value, format); + } else if (!(value instanceof moment)) { + value = moment(value); + } + return value.isValid() ? value.valueOf() : null; + }, + + format: function(time, format) { + return moment(time).format(format); + }, + + add: function(time, amount, unit) { + return moment(time).add(amount, unit).valueOf(); + }, + + diff: function(max, min, unit) { + return moment(max).diff(moment(min), unit); + }, + + startOf: function(time, unit, weekday) { + time = moment(time); + if (unit === 'isoWeek') { + return time.isoWeekday(weekday).valueOf(); + } + return time.startOf(unit).valueOf(); + }, + + endOf: function(time, unit) { + return moment(time).endOf(unit).valueOf(); + }, + + // DEPRECATIONS + + /** + * Provided for backward compatibility with scale.getValueForPixel(). + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ + _create: function(time) { + return moment(time); + }, +} : {}); - beforeUpdate: function(chart) { - var titleOpts = chart.options.title; - var titleBlock = chart.titleBlock; +core_defaults._set('global', { + plugins: { + filler: { + propagate: true + } + } +}); + +var mappers = { + dataset: function(source) { + var index = source.fill; + var chart = source.chart; + var meta = chart.getDatasetMeta(index); + var visible = meta && chart.isDatasetVisible(index); + var points = (visible && meta.dataset._children) || []; + var length = points.length || 0; + + return !length ? null : function(point, i) { + return (i < length && points[i]._view) || null; + }; + }, + + boundary: function(source) { + var boundary = source.boundary; + var x = boundary ? boundary.x : null; + var y = boundary ? boundary.y : null; + + if (helpers$1.isArray(boundary)) { + return function(point, i) { + return boundary[i]; + }; + } + + return function(point) { + return { + x: x === null ? point.x : x, + y: y === null ? point.y : y, + }; + }; + } +}; + +// @todo if (fill[0] === '#') +function decodeFill(el, index, count) { + var model = el._model || {}; + var fill = model.fill; + var target; + + if (fill === undefined) { + fill = !!model.backgroundColor; + } + + if (fill === false || fill === null) { + return false; + } + + if (fill === true) { + return 'origin'; + } + + target = parseFloat(fill, 10); + if (isFinite(target) && Math.floor(target) === target) { + if (fill[0] === '-' || fill[0] === '+') { + target = index + target; + } + + if (target === index || target < 0 || target >= count) { + return false; + } + + return target; + } + + switch (fill) { + // compatibility + case 'bottom': + return 'start'; + case 'top': + return 'end'; + case 'zero': + return 'origin'; + // supported boundaries + case 'origin': + case 'start': + case 'end': + return fill; + // invalid fill values + default: + return false; + } +} + +function computeLinearBoundary(source) { + var model = source.el._model || {}; + var scale = source.el._scale || {}; + var fill = source.fill; + var target = null; + var horizontal; + + if (isFinite(fill)) { + return null; + } + + // Backward compatibility: until v3, we still need to support boundary values set on + // the model (scaleTop, scaleBottom and scaleZero) because some external plugins and + // controllers might still use it (e.g. the Smith chart). + + if (fill === 'start') { + target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom; + } else if (fill === 'end') { + target = model.scaleTop === undefined ? scale.top : model.scaleTop; + } else if (model.scaleZero !== undefined) { + target = model.scaleZero; + } else if (scale.getBasePixel) { + target = scale.getBasePixel(); + } + + if (target !== undefined && target !== null) { + if (target.x !== undefined && target.y !== undefined) { + return target; + } + + if (helpers$1.isFinite(target)) { + horizontal = scale.isHorizontal(); + return { + x: horizontal ? target : null, + y: horizontal ? null : target + }; + } + } + + return null; +} + +function computeCircularBoundary(source) { + var scale = source.el._scale; + var options = scale.options; + var length = scale.chart.data.labels.length; + var fill = source.fill; + var target = []; + var start, end, center, i, point; + + if (!length) { + return null; + } + + start = options.ticks.reverse ? scale.max : scale.min; + end = options.ticks.reverse ? scale.min : scale.max; + center = scale.getPointPositionForValue(0, start); + for (i = 0; i < length; ++i) { + point = fill === 'start' || fill === 'end' + ? scale.getPointPositionForValue(i, fill === 'start' ? start : end) + : scale.getBasePosition(i); + if (options.gridLines.circular) { + point.cx = center.x; + point.cy = center.y; + point.angle = scale.getIndexAngle(i) - Math.PI / 2; + } + target.push(point); + } + return target; +} + +function computeBoundary(source) { + var scale = source.el._scale || {}; + + if (scale.getPointPositionForValue) { + return computeCircularBoundary(source); + } + return computeLinearBoundary(source); +} + +function resolveTarget(sources, index, propagate) { + var source = sources[index]; + var fill = source.fill; + var visited = [index]; + var target; + + if (!propagate) { + return fill; + } + + while (fill !== false && visited.indexOf(fill) === -1) { + if (!isFinite(fill)) { + return fill; + } + + target = sources[fill]; + if (!target) { + return false; + } + + if (target.visible) { + return fill; + } + + visited.push(fill); + fill = target.fill; + } + + return false; +} + +function createMapper(source) { + var fill = source.fill; + var type = 'dataset'; + + if (fill === false) { + return null; + } + + if (!isFinite(fill)) { + type = 'boundary'; + } + + return mappers[type](source); +} + +function isDrawable(point) { + return point && !point.skip; +} + +function drawArea(ctx, curve0, curve1, len0, len1) { + var i, cx, cy, r; + + if (!len0 || !len1) { + return; + } + + // building first area curve (normal) + ctx.moveTo(curve0[0].x, curve0[0].y); + for (i = 1; i < len0; ++i) { + helpers$1.canvas.lineTo(ctx, curve0[i - 1], curve0[i]); + } + + if (curve1[0].angle !== undefined) { + cx = curve1[0].cx; + cy = curve1[0].cy; + r = Math.sqrt(Math.pow(curve1[0].x - cx, 2) + Math.pow(curve1[0].y - cy, 2)); + for (i = len1 - 1; i > 0; --i) { + ctx.arc(cx, cy, r, curve1[i].angle, curve1[i - 1].angle, true); + } + return; + } + + // joining the two area curves + ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y); + + // building opposite area curve (reverse) + for (i = len1 - 1; i > 0; --i) { + helpers$1.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true); + } +} + +function doFill(ctx, points, mapper, view, color, loop) { + var count = points.length; + var span = view.spanGaps; + var curve0 = []; + var curve1 = []; + var len0 = 0; + var len1 = 0; + var i, ilen, index, p0, p1, d0, d1, loopOffset; + + ctx.beginPath(); + + for (i = 0, ilen = count; i < ilen; ++i) { + index = i % count; + p0 = points[index]._view; + p1 = mapper(p0, index, view); + d0 = isDrawable(p0); + d1 = isDrawable(p1); + + if (loop && loopOffset === undefined && d0) { + loopOffset = i + 1; + ilen = count + loopOffset; + } + + if (d0 && d1) { + len0 = curve0.push(p0); + len1 = curve1.push(p1); + } else if (len0 && len1) { + if (!span) { + drawArea(ctx, curve0, curve1, len0, len1); + len0 = len1 = 0; + curve0 = []; + curve1 = []; + } else { + if (d0) { + curve0.push(p0); + } + if (d1) { + curve1.push(p1); + } + } + } + } + + drawArea(ctx, curve0, curve1, len0, len1); + + ctx.closePath(); + ctx.fillStyle = color; + ctx.fill(); +} + +var plugin_filler = { + id: 'filler', + + afterDatasetsUpdate: function(chart, options) { + var count = (chart.data.datasets || []).length; + var propagate = options.propagate; + var sources = []; + var meta, i, el, source; + + for (i = 0; i < count; ++i) { + meta = chart.getDatasetMeta(i); + el = meta.dataset; + source = null; + + if (el && el._model && el instanceof elements.Line) { + source = { + visible: chart.isDatasetVisible(i), + fill: decodeFill(el, i, count), + chart: chart, + el: el + }; + } + + meta.$filler = source; + sources.push(source); + } + + for (i = 0; i < count; ++i) { + source = sources[i]; + if (!source) { + continue; + } + + source.fill = resolveTarget(sources, i, propagate); + source.boundary = computeBoundary(source); + source.mapper = createMapper(source); + } + }, + + beforeDatasetsDraw: function(chart) { + var metasets = chart._getSortedVisibleDatasetMetas(); + var ctx = chart.ctx; + var meta, i, el, view, points, mapper, color; + + for (i = metasets.length - 1; i >= 0; --i) { + meta = metasets[i].$filler; + + if (!meta || !meta.visible) { + continue; + } + + el = meta.el; + view = el._view; + points = el._children || []; + mapper = meta.mapper; + color = view.backgroundColor || core_defaults.global.defaultColor; + + if (mapper && color && points.length) { + helpers$1.canvas.clipArea(ctx, chart.chartArea); + doFill(ctx, points, mapper, view, color, el._loop); + helpers$1.canvas.unclipArea(ctx); + } + } + } +}; - if (titleOpts) { - helpers$1.mergeIf(titleOpts, core_defaults.global.title); +var getRtlHelper$1 = helpers$1.rtl.getRtlAdapter; +var noop$1 = helpers$1.noop; +var valueOrDefault$e = helpers$1.valueOrDefault; + +core_defaults._set('global', { + legend: { + display: true, + position: 'top', + align: 'center', + fullWidth: true, + reverse: false, + weight: 1000, + + // a callback that will handle + onClick: function(e, legendItem) { + var index = legendItem.datasetIndex; + var ci = this.chart; + var meta = ci.getDatasetMeta(index); + + // See controller.isDatasetVisible comment + meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null; + + // We hid a dataset ... rerender the chart + ci.update(); + }, + + onHover: null, + onLeave: null, + + labels: { + boxWidth: 40, + padding: 10, + // Generates labels shown in the legend + // Valid properties to return: + // text : text to display + // fillStyle : fill of coloured box + // strokeStyle: stroke of coloured box + // hidden : if this legend item refers to a hidden item + // lineCap : cap style for line + // lineDash + // lineDashOffset : + // lineJoin : + // lineWidth : + generateLabels: function(chart) { + var datasets = chart.data.datasets; + var options = chart.options.legend || {}; + var usePointStyle = options.labels && options.labels.usePointStyle; + + return chart._getSortedDatasetMetas().map(function(meta) { + var style = meta.controller.getStyle(usePointStyle ? 0 : undefined); + + return { + text: datasets[meta.index].label, + fillStyle: style.backgroundColor, + hidden: !chart.isDatasetVisible(meta.index), + lineCap: style.borderCapStyle, + lineDash: style.borderDash, + lineDashOffset: style.borderDashOffset, + lineJoin: style.borderJoinStyle, + lineWidth: style.borderWidth, + strokeStyle: style.borderColor, + pointStyle: style.pointStyle, + rotation: style.rotation, + + // Below is extra data used for toggling the datasets + datasetIndex: meta.index + }; + }, this); + } + } + }, + + legendCallback: function(chart) { + var list = document.createElement('ul'); + var datasets = chart.data.datasets; + var i, ilen, listItem, listItemSpan; + + list.setAttribute('class', chart.id + '-legend'); + + for (i = 0, ilen = datasets.length; i < ilen; i++) { + listItem = list.appendChild(document.createElement('li')); + listItemSpan = listItem.appendChild(document.createElement('span')); + listItemSpan.style.backgroundColor = datasets[i].backgroundColor; + if (datasets[i].label) { + listItem.appendChild(document.createTextNode(datasets[i].label)); + } + } + + return list.outerHTML; + } +}); + +/** + * Helper function to get the box width based on the usePointStyle option + * @param {object} labelopts - the label options on the legend + * @param {number} fontSize - the label font size + * @return {number} width of the color box area + */ +function getBoxWidth(labelOpts, fontSize) { + return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ? + fontSize : + labelOpts.boxWidth; +} + +/** + * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required! + */ +var Legend = core_element.extend({ + + initialize: function(config) { + var me = this; + helpers$1.extend(me, config); + + // Contains hit boxes for each dataset (in dataset order) + me.legendHitBoxes = []; + + /** + * @private + */ + me._hoveredItem = null; + + // Are we in doughnut mode which has a different data type + me.doughnutMode = false; + }, + + // These methods are ordered by lifecycle. Utilities then follow. + // Any function defined here is inherited by all legend types. + // Any function can be extended by the legend type + + beforeUpdate: noop$1, + update: function(maxWidth, maxHeight, margins) { + var me = this; + + // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;) + me.beforeUpdate(); + + // Absorb the master measurements + me.maxWidth = maxWidth; + me.maxHeight = maxHeight; + me.margins = margins; + + // Dimensions + me.beforeSetDimensions(); + me.setDimensions(); + me.afterSetDimensions(); + // Labels + me.beforeBuildLabels(); + me.buildLabels(); + me.afterBuildLabels(); + + // Fit + me.beforeFit(); + me.fit(); + me.afterFit(); + // + me.afterUpdate(); + + return me.minSize; + }, + afterUpdate: noop$1, + + // + + beforeSetDimensions: noop$1, + setDimensions: function() { + var me = this; + // Set the unconstrained dimension before label rotation + if (me.isHorizontal()) { + // Reset position before calculating rotation + me.width = me.maxWidth; + me.left = 0; + me.right = me.width; + } else { + me.height = me.maxHeight; + + // Reset position before calculating rotation + me.top = 0; + me.bottom = me.height; + } + + // Reset padding + me.paddingLeft = 0; + me.paddingTop = 0; + me.paddingRight = 0; + me.paddingBottom = 0; + + // Reset minSize + me.minSize = { + width: 0, + height: 0 + }; + }, + afterSetDimensions: noop$1, + + // + + beforeBuildLabels: noop$1, + buildLabels: function() { + var me = this; + var labelOpts = me.options.labels || {}; + var legendItems = helpers$1.callback(labelOpts.generateLabels, [me.chart], me) || []; + + if (labelOpts.filter) { + legendItems = legendItems.filter(function(item) { + return labelOpts.filter(item, me.chart.data); + }); + } + + if (me.options.reverse) { + legendItems.reverse(); + } + + me.legendItems = legendItems; + }, + afterBuildLabels: noop$1, + + // + + beforeFit: noop$1, + fit: function() { + var me = this; + var opts = me.options; + var labelOpts = opts.labels; + var display = opts.display; + + var ctx = me.ctx; + + var labelFont = helpers$1.options._parseFont(labelOpts); + var fontSize = labelFont.size; + + // Reset hit boxes + var hitboxes = me.legendHitBoxes = []; + + var minSize = me.minSize; + var isHorizontal = me.isHorizontal(); + + if (isHorizontal) { + minSize.width = me.maxWidth; // fill all the width + minSize.height = display ? 10 : 0; + } else { + minSize.width = display ? 10 : 0; + minSize.height = me.maxHeight; // fill all the height + } + + // Increase sizes here + if (!display) { + me.width = minSize.width = me.height = minSize.height = 0; + return; + } + ctx.font = labelFont.string; + + if (isHorizontal) { + // Labels + + // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one + var lineWidths = me.lineWidths = [0]; + var totalHeight = 0; + + ctx.textAlign = 'left'; + ctx.textBaseline = 'middle'; + + helpers$1.each(me.legendItems, function(legendItem, i) { + var boxWidth = getBoxWidth(labelOpts, fontSize); + var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width; + + if (i === 0 || lineWidths[lineWidths.length - 1] + width + 2 * labelOpts.padding > minSize.width) { + totalHeight += fontSize + labelOpts.padding; + lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0; + } + + // Store the hitbox width and height here. Final position will be updated in `draw` + hitboxes[i] = { + left: 0, + top: 0, + width: width, + height: fontSize + }; + + lineWidths[lineWidths.length - 1] += width + labelOpts.padding; + }); + + minSize.height += totalHeight; + + } else { + var vPadding = labelOpts.padding; + var columnWidths = me.columnWidths = []; + var columnHeights = me.columnHeights = []; + var totalWidth = labelOpts.padding; + var currentColWidth = 0; + var currentColHeight = 0; + + helpers$1.each(me.legendItems, function(legendItem, i) { + var boxWidth = getBoxWidth(labelOpts, fontSize); + var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width; + + // If too tall, go to new column + if (i > 0 && currentColHeight + fontSize + 2 * vPadding > minSize.height) { + totalWidth += currentColWidth + labelOpts.padding; + columnWidths.push(currentColWidth); // previous column width + columnHeights.push(currentColHeight); + currentColWidth = 0; + currentColHeight = 0; + } + + // Get max width + currentColWidth = Math.max(currentColWidth, itemWidth); + currentColHeight += fontSize + vPadding; + + // Store the hitbox width and height here. Final position will be updated in `draw` + hitboxes[i] = { + left: 0, + top: 0, + width: itemWidth, + height: fontSize + }; + }); + + totalWidth += currentColWidth; + columnWidths.push(currentColWidth); + columnHeights.push(currentColHeight); + minSize.width += totalWidth; + } + + me.width = minSize.width; + me.height = minSize.height; + }, + afterFit: noop$1, + + // Shared Methods + isHorizontal: function() { + return this.options.position === 'top' || this.options.position === 'bottom'; + }, + + // Actually draw the legend on the canvas + draw: function() { + var me = this; + var opts = me.options; + var labelOpts = opts.labels; + var globalDefaults = core_defaults.global; + var defaultColor = globalDefaults.defaultColor; + var lineDefault = globalDefaults.elements.line; + var legendHeight = me.height; + var columnHeights = me.columnHeights; + var legendWidth = me.width; + var lineWidths = me.lineWidths; + + if (!opts.display) { + return; + } + + var rtlHelper = getRtlHelper$1(opts.rtl, me.left, me.minSize.width); + var ctx = me.ctx; + var fontColor = valueOrDefault$e(labelOpts.fontColor, globalDefaults.defaultFontColor); + var labelFont = helpers$1.options._parseFont(labelOpts); + var fontSize = labelFont.size; + var cursor; + + // Canvas setup + ctx.textAlign = rtlHelper.textAlign('left'); + ctx.textBaseline = 'middle'; + ctx.lineWidth = 0.5; + ctx.strokeStyle = fontColor; // for strikethrough effect + ctx.fillStyle = fontColor; // render in correct colour + ctx.font = labelFont.string; + + var boxWidth = getBoxWidth(labelOpts, fontSize); + var hitboxes = me.legendHitBoxes; + + // current position + var drawLegendBox = function(x, y, legendItem) { + if (isNaN(boxWidth) || boxWidth <= 0) { + return; + } + + // Set the ctx for the box + ctx.save(); + + var lineWidth = valueOrDefault$e(legendItem.lineWidth, lineDefault.borderWidth); + ctx.fillStyle = valueOrDefault$e(legendItem.fillStyle, defaultColor); + ctx.lineCap = valueOrDefault$e(legendItem.lineCap, lineDefault.borderCapStyle); + ctx.lineDashOffset = valueOrDefault$e(legendItem.lineDashOffset, lineDefault.borderDashOffset); + ctx.lineJoin = valueOrDefault$e(legendItem.lineJoin, lineDefault.borderJoinStyle); + ctx.lineWidth = lineWidth; + ctx.strokeStyle = valueOrDefault$e(legendItem.strokeStyle, defaultColor); + + if (ctx.setLineDash) { + // IE 9 and 10 do not support line dash + ctx.setLineDash(valueOrDefault$e(legendItem.lineDash, lineDefault.borderDash)); + } + + if (labelOpts && labelOpts.usePointStyle) { + // Recalculate x and y for drawPoint() because its expecting + // x and y to be center of figure (instead of top left) + var radius = boxWidth * Math.SQRT2 / 2; + var centerX = rtlHelper.xPlus(x, boxWidth / 2); + var centerY = y + fontSize / 2; + + // Draw pointStyle as legend symbol + helpers$1.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY, legendItem.rotation); + } else { + // Draw box as legend symbol + ctx.fillRect(rtlHelper.leftForLtr(x, boxWidth), y, boxWidth, fontSize); + if (lineWidth !== 0) { + ctx.strokeRect(rtlHelper.leftForLtr(x, boxWidth), y, boxWidth, fontSize); + } + } + + ctx.restore(); + }; + + var fillText = function(x, y, legendItem, textWidth) { + var halfFontSize = fontSize / 2; + var xLeft = rtlHelper.xPlus(x, boxWidth + halfFontSize); + var yMiddle = y + halfFontSize; + + ctx.fillText(legendItem.text, xLeft, yMiddle); + + if (legendItem.hidden) { + // Strikethrough the text if hidden + ctx.beginPath(); + ctx.lineWidth = 2; + ctx.moveTo(xLeft, yMiddle); + ctx.lineTo(rtlHelper.xPlus(xLeft, textWidth), yMiddle); + ctx.stroke(); + } + }; + + var alignmentOffset = function(dimension, blockSize) { + switch (opts.align) { + case 'start': + return labelOpts.padding; + case 'end': + return dimension - blockSize; + default: // center + return (dimension - blockSize + labelOpts.padding) / 2; + } + }; + + // Horizontal + var isHorizontal = me.isHorizontal(); + if (isHorizontal) { + cursor = { + x: me.left + alignmentOffset(legendWidth, lineWidths[0]), + y: me.top + labelOpts.padding, + line: 0 + }; + } else { + cursor = { + x: me.left + labelOpts.padding, + y: me.top + alignmentOffset(legendHeight, columnHeights[0]), + line: 0 + }; + } + + helpers$1.rtl.overrideTextDirection(me.ctx, opts.textDirection); + + var itemHeight = fontSize + labelOpts.padding; + helpers$1.each(me.legendItems, function(legendItem, i) { + var textWidth = ctx.measureText(legendItem.text).width; + var width = boxWidth + (fontSize / 2) + textWidth; + var x = cursor.x; + var y = cursor.y; + + rtlHelper.setWidth(me.minSize.width); + + // Use (me.left + me.minSize.width) and (me.top + me.minSize.height) + // instead of me.right and me.bottom because me.width and me.height + // may have been changed since me.minSize was calculated + if (isHorizontal) { + if (i > 0 && x + width + labelOpts.padding > me.left + me.minSize.width) { + y = cursor.y += itemHeight; + cursor.line++; + x = cursor.x = me.left + alignmentOffset(legendWidth, lineWidths[cursor.line]); + } + } else if (i > 0 && y + itemHeight > me.top + me.minSize.height) { + x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding; + cursor.line++; + y = cursor.y = me.top + alignmentOffset(legendHeight, columnHeights[cursor.line]); + } + + var realX = rtlHelper.x(x); + + drawLegendBox(realX, y, legendItem); + + hitboxes[i].left = rtlHelper.leftForLtr(realX, hitboxes[i].width); + hitboxes[i].top = y; + + // Fill the actual label + fillText(realX, y, legendItem, textWidth); + + if (isHorizontal) { + cursor.x += width + labelOpts.padding; + } else { + cursor.y += itemHeight; + } + }); + + helpers$1.rtl.restoreTextDirection(me.ctx, opts.textDirection); + }, + + /** + * @private + */ + _getLegendItemAt: function(x, y) { + var me = this; + var i, hitBox, lh; + + if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) { + // See if we are touching one of the dataset boxes + lh = me.legendHitBoxes; + for (i = 0; i < lh.length; ++i) { + hitBox = lh[i]; + + if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) { + // Touching an element + return me.legendItems[i]; + } + } + } + + return null; + }, + + /** + * Handle an event + * @private + * @param {IEvent} event - The event to handle + */ + handleEvent: function(e) { + var me = this; + var opts = me.options; + var type = e.type === 'mouseup' ? 'click' : e.type; + var hoveredItem; + + if (type === 'mousemove') { + if (!opts.onHover && !opts.onLeave) { + return; + } + } else if (type === 'click') { + if (!opts.onClick) { + return; + } + } else { + return; + } + + // Chart event already has relative position in it + hoveredItem = me._getLegendItemAt(e.x, e.y); + + if (type === 'click') { + if (hoveredItem && opts.onClick) { + // use e.native for backwards compatibility + opts.onClick.call(me, e.native, hoveredItem); + } + } else { + if (opts.onLeave && hoveredItem !== me._hoveredItem) { + if (me._hoveredItem) { + opts.onLeave.call(me, e.native, me._hoveredItem); + } + me._hoveredItem = hoveredItem; + } + + if (opts.onHover && hoveredItem) { + // use e.native for backwards compatibility + opts.onHover.call(me, e.native, hoveredItem); + } + } + } +}); + +function createNewLegendAndAttach(chart, legendOpts) { + var legend = new Legend({ + ctx: chart.ctx, + options: legendOpts, + chart: chart + }); + + core_layouts.configure(chart, legend, legendOpts); + core_layouts.addBox(chart, legend); + chart.legend = legend; +} + +var plugin_legend = { + id: 'legend', + + /** + * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making + * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of + * the plugin, which one will be re-exposed in the chart.js file. + * https://github.com/chartjs/Chart.js/pull/2640 + * @private + */ + _element: Legend, + + beforeInit: function(chart) { + var legendOpts = chart.options.legend; + + if (legendOpts) { + createNewLegendAndAttach(chart, legendOpts); + } + }, + + beforeUpdate: function(chart) { + var legendOpts = chart.options.legend; + var legend = chart.legend; + + if (legendOpts) { + helpers$1.mergeIf(legendOpts, core_defaults.global.legend); + + if (legend) { + core_layouts.configure(chart, legend, legendOpts); + legend.options = legendOpts; + } else { + createNewLegendAndAttach(chart, legendOpts); + } + } else if (legend) { + core_layouts.removeBox(chart, legend); + delete chart.legend; + } + }, + + afterEvent: function(chart, e) { + var legend = chart.legend; + if (legend) { + legend.handleEvent(e); + } + } +}; - if (titleBlock) { - core_layouts.configure(chart, titleBlock, titleOpts); - titleBlock.options = titleOpts; - } else { - createNewTitleBlockAndAttach(chart, titleOpts); - } - } else if (titleBlock) { - core_layouts.removeBox(chart, titleBlock); - delete chart.titleBlock; - } - } +var noop$2 = helpers$1.noop; + +core_defaults._set('global', { + title: { + display: false, + fontStyle: 'bold', + fullWidth: true, + padding: 10, + position: 'top', + text: '', + weight: 2000 // by default greater than legend (1000) to be above + } +}); + +/** + * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required! + */ +var Title = core_element.extend({ + initialize: function(config) { + var me = this; + helpers$1.extend(me, config); + + // Contains hit boxes for each dataset (in dataset order) + me.legendHitBoxes = []; + }, + + // These methods are ordered by lifecycle. Utilities then follow. + + beforeUpdate: noop$2, + update: function(maxWidth, maxHeight, margins) { + var me = this; + + // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;) + me.beforeUpdate(); + + // Absorb the master measurements + me.maxWidth = maxWidth; + me.maxHeight = maxHeight; + me.margins = margins; + + // Dimensions + me.beforeSetDimensions(); + me.setDimensions(); + me.afterSetDimensions(); + // Labels + me.beforeBuildLabels(); + me.buildLabels(); + me.afterBuildLabels(); + + // Fit + me.beforeFit(); + me.fit(); + me.afterFit(); + // + me.afterUpdate(); + + return me.minSize; + + }, + afterUpdate: noop$2, + + // + + beforeSetDimensions: noop$2, + setDimensions: function() { + var me = this; + // Set the unconstrained dimension before label rotation + if (me.isHorizontal()) { + // Reset position before calculating rotation + me.width = me.maxWidth; + me.left = 0; + me.right = me.width; + } else { + me.height = me.maxHeight; + + // Reset position before calculating rotation + me.top = 0; + me.bottom = me.height; + } + + // Reset padding + me.paddingLeft = 0; + me.paddingTop = 0; + me.paddingRight = 0; + me.paddingBottom = 0; + + // Reset minSize + me.minSize = { + width: 0, + height: 0 + }; + }, + afterSetDimensions: noop$2, + + // + + beforeBuildLabels: noop$2, + buildLabels: noop$2, + afterBuildLabels: noop$2, + + // + + beforeFit: noop$2, + fit: function() { + var me = this; + var opts = me.options; + var minSize = me.minSize = {}; + var isHorizontal = me.isHorizontal(); + var lineCount, textSize; + + if (!opts.display) { + me.width = minSize.width = me.height = minSize.height = 0; + return; + } + + lineCount = helpers$1.isArray(opts.text) ? opts.text.length : 1; + textSize = lineCount * helpers$1.options._parseFont(opts).lineHeight + opts.padding * 2; + + me.width = minSize.width = isHorizontal ? me.maxWidth : textSize; + me.height = minSize.height = isHorizontal ? textSize : me.maxHeight; + }, + afterFit: noop$2, + + // Shared Methods + isHorizontal: function() { + var pos = this.options.position; + return pos === 'top' || pos === 'bottom'; + }, + + // Actually draw the title block on the canvas + draw: function() { + var me = this; + var ctx = me.ctx; + var opts = me.options; + + if (!opts.display) { + return; + } + + var fontOpts = helpers$1.options._parseFont(opts); + var lineHeight = fontOpts.lineHeight; + var offset = lineHeight / 2 + opts.padding; + var rotation = 0; + var top = me.top; + var left = me.left; + var bottom = me.bottom; + var right = me.right; + var maxWidth, titleX, titleY; + + ctx.fillStyle = helpers$1.valueOrDefault(opts.fontColor, core_defaults.global.defaultFontColor); // render in correct colour + ctx.font = fontOpts.string; + + // Horizontal + if (me.isHorizontal()) { + titleX = left + ((right - left) / 2); // midpoint of the width + titleY = top + offset; + maxWidth = right - left; + } else { + titleX = opts.position === 'left' ? left + offset : right - offset; + titleY = top + ((bottom - top) / 2); + maxWidth = bottom - top; + rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5); + } + + ctx.save(); + ctx.translate(titleX, titleY); + ctx.rotate(rotation); + ctx.textAlign = 'center'; + ctx.textBaseline = 'middle'; + + var text = opts.text; + if (helpers$1.isArray(text)) { + var y = 0; + for (var i = 0; i < text.length; ++i) { + ctx.fillText(text[i], 0, y, maxWidth); + y += lineHeight; + } + } else { + ctx.fillText(text, 0, 0, maxWidth); + } + + ctx.restore(); + } +}); + +function createNewTitleBlockAndAttach(chart, titleOpts) { + var title = new Title({ + ctx: chart.ctx, + options: titleOpts, + chart: chart + }); + + core_layouts.configure(chart, title, titleOpts); + core_layouts.addBox(chart, title); + chart.titleBlock = title; +} + +var plugin_title = { + id: 'title', + + /** + * Backward compatibility: since 2.1.5, the title is registered as a plugin, making + * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of + * the plugin, which one will be re-exposed in the chart.js file. + * https://github.com/chartjs/Chart.js/pull/2640 + * @private + */ + _element: Title, + + beforeInit: function(chart) { + var titleOpts = chart.options.title; + + if (titleOpts) { + createNewTitleBlockAndAttach(chart, titleOpts); + } + }, + + beforeUpdate: function(chart) { + var titleOpts = chart.options.title; + var titleBlock = chart.titleBlock; + + if (titleOpts) { + helpers$1.mergeIf(titleOpts, core_defaults.global.title); + + if (titleBlock) { + core_layouts.configure(chart, titleBlock, titleOpts); + titleBlock.options = titleOpts; + } else { + createNewTitleBlockAndAttach(chart, titleOpts); + } + } else if (titleBlock) { + core_layouts.removeBox(chart, titleBlock); + delete chart.titleBlock; + } + } }; -var plugins = {}; -var filler = plugin_filler; -var legend = plugin_legend; +var plugins = {}; +var filler = plugin_filler; +var legend = plugin_legend; var title = plugin_title; plugins.filler = filler; plugins.legend = legend; plugins.title = title; -/** - * @namespace Chart - */ - - -core_controller.helpers = helpers$1; - -// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests! -core_helpers(); - -core_controller._adapters = core_adapters; -core_controller.Animation = core_animation; -core_controller.animationService = core_animations; -core_controller.controllers = controllers; -core_controller.DatasetController = core_datasetController; -core_controller.defaults = core_defaults; -core_controller.Element = core_element; -core_controller.elements = elements; -core_controller.Interaction = core_interaction; -core_controller.layouts = core_layouts; -core_controller.platform = platform; -core_controller.plugins = core_plugins; -core_controller.Scale = core_scale; -core_controller.scaleService = core_scaleService; -core_controller.Ticks = core_ticks; -core_controller.Tooltip = core_tooltip; - -// Register built-in scales - -core_controller.helpers.each(scales, function(scale, type) { - core_controller.scaleService.registerScaleType(type, scale, scale._defaults); -}); - -// Load to register built-in adapters (as side effects) - - -// Loading built-in plugins - -for (var k in plugins) { - if (plugins.hasOwnProperty(k)) { - core_controller.plugins.register(plugins[k]); - } -} - -core_controller.platform.initialize(); - -var src = core_controller; -if (typeof window !== 'undefined') { - window.Chart = core_controller; -} - -// DEPRECATIONS - -/** - * Provided for backward compatibility, not available anymore - * @namespace Chart.Chart - * @deprecated since version 2.8.0 - * @todo remove at version 3 - * @private - */ -core_controller.Chart = core_controller; - -/** - * Provided for backward compatibility, not available anymore - * @namespace Chart.Legend - * @deprecated since version 2.1.5 - * @todo remove at version 3 - * @private - */ -core_controller.Legend = plugins.legend._element; - -/** - * Provided for backward compatibility, not available anymore - * @namespace Chart.Title - * @deprecated since version 2.1.5 - * @todo remove at version 3 - * @private - */ -core_controller.Title = plugins.title._element; - -/** - * Provided for backward compatibility, use Chart.plugins instead - * @namespace Chart.pluginService - * @deprecated since version 2.1.5 - * @todo remove at version 3 - * @private - */ -core_controller.pluginService = core_controller.plugins; - -/** - * Provided for backward compatibility, inheriting from Chart.PlugingBase has no - * effect, instead simply create/register plugins via plain JavaScript objects. - * @interface Chart.PluginBase - * @deprecated since version 2.5.0 - * @todo remove at version 3 - * @private - */ -core_controller.PluginBase = core_controller.Element.extend({}); - -/** - * Provided for backward compatibility, use Chart.helpers.canvas instead. - * @namespace Chart.canvasHelpers - * @deprecated since version 2.6.0 - * @todo remove at version 3 - * @private - */ -core_controller.canvasHelpers = core_controller.helpers.canvas; - -/** - * Provided for backward compatibility, use Chart.layouts instead. - * @namespace Chart.layoutService - * @deprecated since version 2.7.3 - * @todo remove at version 3 - * @private - */ -core_controller.layoutService = core_controller.layouts; - -/** - * Provided for backward compatibility, not available anymore. - * @namespace Chart.LinearScaleBase - * @deprecated since version 2.8 - * @todo remove at version 3 - * @private - */ -core_controller.LinearScaleBase = scale_linearbase; - -/** - * Provided for backward compatibility, instead we should create a new Chart - * by setting the type in the config (`new Chart(id, {type: '{chart-type}'}`). - * @deprecated since version 2.8.0 - * @todo remove at version 3 - */ -core_controller.helpers.each( - [ - 'Bar', - 'Bubble', - 'Doughnut', - 'Line', - 'PolarArea', - 'Radar', - 'Scatter' - ], - function(klass) { - core_controller[klass] = function(ctx, cfg) { - return new core_controller(ctx, core_controller.helpers.merge(cfg || {}, { - type: klass.charAt(0).toLowerCase() + klass.slice(1) - })); - }; - } +/** + * @namespace Chart + */ + + +core_controller.helpers = helpers$1; + +// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests! +core_helpers(); + +core_controller._adapters = core_adapters; +core_controller.Animation = core_animation; +core_controller.animationService = core_animations; +core_controller.controllers = controllers; +core_controller.DatasetController = core_datasetController; +core_controller.defaults = core_defaults; +core_controller.Element = core_element; +core_controller.elements = elements; +core_controller.Interaction = core_interaction; +core_controller.layouts = core_layouts; +core_controller.platform = platform; +core_controller.plugins = core_plugins; +core_controller.Scale = core_scale; +core_controller.scaleService = core_scaleService; +core_controller.Ticks = core_ticks; +core_controller.Tooltip = core_tooltip; + +// Register built-in scales + +core_controller.helpers.each(scales, function(scale, type) { + core_controller.scaleService.registerScaleType(type, scale, scale._defaults); +}); + +// Load to register built-in adapters (as side effects) + + +// Loading built-in plugins + +for (var k in plugins) { + if (plugins.hasOwnProperty(k)) { + core_controller.plugins.register(plugins[k]); + } +} + +core_controller.platform.initialize(); + +var src = core_controller; +if (typeof window !== 'undefined') { + window.Chart = core_controller; +} + +// DEPRECATIONS + +/** + * Provided for backward compatibility, not available anymore + * @namespace Chart.Chart + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ +core_controller.Chart = core_controller; + +/** + * Provided for backward compatibility, not available anymore + * @namespace Chart.Legend + * @deprecated since version 2.1.5 + * @todo remove at version 3 + * @private + */ +core_controller.Legend = plugins.legend._element; + +/** + * Provided for backward compatibility, not available anymore + * @namespace Chart.Title + * @deprecated since version 2.1.5 + * @todo remove at version 3 + * @private + */ +core_controller.Title = plugins.title._element; + +/** + * Provided for backward compatibility, use Chart.plugins instead + * @namespace Chart.pluginService + * @deprecated since version 2.1.5 + * @todo remove at version 3 + * @private + */ +core_controller.pluginService = core_controller.plugins; + +/** + * Provided for backward compatibility, inheriting from Chart.PlugingBase has no + * effect, instead simply create/register plugins via plain JavaScript objects. + * @interface Chart.PluginBase + * @deprecated since version 2.5.0 + * @todo remove at version 3 + * @private + */ +core_controller.PluginBase = core_controller.Element.extend({}); + +/** + * Provided for backward compatibility, use Chart.helpers.canvas instead. + * @namespace Chart.canvasHelpers + * @deprecated since version 2.6.0 + * @todo remove at version 3 + * @private + */ +core_controller.canvasHelpers = core_controller.helpers.canvas; + +/** + * Provided for backward compatibility, use Chart.layouts instead. + * @namespace Chart.layoutService + * @deprecated since version 2.7.3 + * @todo remove at version 3 + * @private + */ +core_controller.layoutService = core_controller.layouts; + +/** + * Provided for backward compatibility, not available anymore. + * @namespace Chart.LinearScaleBase + * @deprecated since version 2.8 + * @todo remove at version 3 + * @private + */ +core_controller.LinearScaleBase = scale_linearbase; + +/** + * Provided for backward compatibility, instead we should create a new Chart + * by setting the type in the config (`new Chart(id, {type: '{chart-type}'}`). + * @deprecated since version 2.8.0 + * @todo remove at version 3 + */ +core_controller.helpers.each( + [ + 'Bar', + 'Bubble', + 'Doughnut', + 'Line', + 'PolarArea', + 'Radar', + 'Scatter' + ], + function(klass) { + core_controller[klass] = function(ctx, cfg) { + return new core_controller(ctx, core_controller.helpers.merge(cfg || {}, { + type: klass.charAt(0).toLowerCase() + klass.slice(1) + })); + }; + } ); return src; diff --git a/layerindex/static/js/Chart-2.9.4.min.js b/layerindex/static/js/Chart-2.9.4.min.js new file mode 100644 index 0000000..a87f614 --- /dev/null +++ b/layerindex/static/js/Chart-2.9.4.min.js @@ -0,0 +1,7 @@ +/*! + * Chart.js v2.9.4 + * https://www.chartjs.org + * (c) 2020 Chart.js Contributors + * Released under the MIT License + */ +!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e(function(){try{return require("moment")}catch(t){}}()):"function"==typeof define&&define.amd?define(["require"],(function(t){return e(function(){try{return t("moment")}catch(t){}}())})):(t=t||self).Chart=e(t.moment)}(this,(function(t){"use 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e=Array.prototype.slice.call(arguments),a=i.apply(this,e);return H.each(t._chartjs.listeners,(function(t){"function"==typeof t[n]&&t[n].apply(t,e)})),a}})})))),n._data=a),n.resyncElements()},_configure:function(){this._config=H.merge(Object.create(null),[this.chart.options.datasets[this._type],this.getDataset()],{merger:function(t,e,n){"_meta"!==t&&"data"!==t&&H._merger(t,e,n)}})},_update:function(t){this._configure(),this._cachedDataOpts=null,this.update(t)},update:H.noop,transition:function(t){for(var e=this.getMeta(),n=e.data||[],i=n.length,a=0;a<i;++a)n[a].transition(t);e.dataset&&e.dataset.transition(t)},draw:function(){var t=this.getMeta(),e=t.data||[],n=e.length,i=0;for(t.dataset&&t.dataset.draw();i<n;++i)e[i].draw()},getStyle:function(t){var e,n=this.getMeta(),i=n.dataset;return this._configure(),i&&void 0===t?e=this._resolveDatasetElementOptions(i||{}):(t=t||0,e=this._resolveDataElementOptions(n.data[t]||{},t)),!1!==e.fill&&null!==e.fill||(e.backgroundColor=e.borderColor),e},_resolveDatasetElementOptions:function(t,e){var n,i,a,r,o=this,s=o.chart,l=o._config,u=t.custom||{},d=s.options.elements[o.datasetElementType.prototype._type]||{},h=o._datasetElementOptions,c={},f={chart:s,dataset:o.getDataset(),datasetIndex:o.index,hover:e};for(n=0,i=h.length;n<i;++n)a=h[n],r=e?"hover"+a.charAt(0).toUpperCase()+a.slice(1):a,c[a]=Q([u[r],l[r],d[r]],f);return c},_resolveDataElementOptions:function(t,e){var n=this,i=t&&t.custom,a=n._cachedDataOpts;if(a&&!i)return a;var r,o,s,l,u=n.chart,d=n._config,h=u.options.elements[n.dataElementType.prototype._type]||{},c=n._dataElementOptions,f={},g={chart:u,dataIndex:e,dataset:n.getDataset(),datasetIndex:n.index},p={cacheable:!i};if(i=i||{},H.isArray(c))for(o=0,s=c.length;o<s;++o)f[l=c[o]]=Q([i[l],d[l],h[l]],g,e,p);else for(o=0,s=(r=Object.keys(c)).length;o<s;++o)f[l=r[o]]=Q([i[l],d[c[l]],d[l],h[l]],g,e,p);return p.cacheable&&(n._cachedDataOpts=Object.freeze(f)),f},removeHoverStyle:function(t){H.merge(t._model,t.$previousStyle||{}),delete t.$previousStyle},setHoverStyle:function(t){var e=this.chart.data.datasets[t._datasetIndex],n=t._index,i=t.custom||{},a=t._model,r=H.getHoverColor;t.$previousStyle={backgroundColor:a.backgroundColor,borderColor:a.borderColor,borderWidth:a.borderWidth},a.backgroundColor=Q([i.hoverBackgroundColor,e.hoverBackgroundColor,r(a.backgroundColor)],void 0,n),a.borderColor=Q([i.hoverBorderColor,e.hoverBorderColor,r(a.borderColor)],void 0,n),a.borderWidth=Q([i.hoverBorderWidth,e.hoverBorderWidth,a.borderWidth],void 0,n)},_removeDatasetHoverStyle:function(){var t=this.getMeta().dataset;t&&this.removeHoverStyle(t)},_setDatasetHoverStyle:function(){var t,e,n,i,a,r,o=this.getMeta().dataset,s={};if(o){for(r=o._model,a=this._resolveDatasetElementOptions(o,!0),t=0,e=(i=Object.keys(a)).length;t<e;++t)s[n=i[t]]=r[n],r[n]=a[n];o.$previousStyle=s}},resyncElements:function(){var t=this.getMeta(),e=this.getDataset().data,n=t.data.length,i=e.length;i<n?t.data.splice(i,n-i):i>n&&this.insertElements(n,i-n)},insertElements:function(t,e){for(var n=0;n<e;++n)this.addElementAndReset(t+n)},onDataPush:function(){var t=arguments.length;this.insertElements(this.getDataset().data.length-t,t)},onDataPop:function(){this.getMeta().data.pop()},onDataShift:function(){this.getMeta().data.shift()},onDataSplice:function(t,e){this.getMeta().data.splice(t,e),this.insertElements(t,arguments.length-2)},onDataUnshift:function(){this.insertElements(0,arguments.length)}}),nt.extend=H.inherits;var it=nt,at=2*Math.PI;function rt(t,e){var n=e.startAngle,i=e.endAngle,a=e.pixelMargin,r=a/e.outerRadius,o=e.x,s=e.y;t.beginPath(),t.arc(o,s,e.outerRadius,n-r,i+r),e.innerRadius>a?(r=a/e.innerRadius,t.arc(o,s,e.innerRadius-a,i+r,n-r,!0)):t.arc(o,s,a,i+Math.PI/2,n-Math.PI/2),t.closePath(),t.clip()}function ot(t,e,n){var i="inner"===e.borderAlign;i?(t.lineWidth=2*e.borderWidth,t.lineJoin="round"):(t.lineWidth=e.borderWidth,t.lineJoin="bevel"),n.fullCircles&&function(t,e,n,i){var a,r=n.endAngle;for(i&&(n.endAngle=n.startAngle+at,rt(t,n),n.endAngle=r,n.endAngle===n.startAngle&&n.fullCircles&&(n.endAngle+=at,n.fullCircles--)),t.beginPath(),t.arc(n.x,n.y,n.innerRadius,n.startAngle+at,n.startAngle,!0),a=0;a<n.fullCircles;++a)t.stroke();for(t.beginPath(),t.arc(n.x,n.y,e.outerRadius,n.startAngle,n.startAngle+at),a=0;a<n.fullCircles;++a)t.stroke()}(t,e,n,i),i&&rt(t,n),t.beginPath(),t.arc(n.x,n.y,e.outerRadius,n.startAngle,n.endAngle),t.arc(n.x,n.y,n.innerRadius,n.endAngle,n.startAngle,!0),t.closePath(),t.stroke()}N._set("global",{elements:{arc:{backgroundColor:N.global.defaultColor,borderColor:"#fff",borderWidth:2,borderAlign:"center"}}});var st=K.extend({_type:"arc",inLabelRange:function(t){var e=this._view;return!!e&&Math.pow(t-e.x,2)<Math.pow(e.radius+e.hoverRadius,2)},inRange:function(t,e){var n=this._view;if(n){for(var i=H.getAngleFromPoint(n,{x:t,y:e}),a=i.angle,r=i.distance,o=n.startAngle,s=n.endAngle;s<o;)s+=at;for(;a>s;)a-=at;for(;a<o;)a+=at;var l=a>=o&&a<=s,u=r>=n.innerRadius&&r<=n.outerRadius;return l&&u}return!1},getCenterPoint:function(){var t=this._view,e=(t.startAngle+t.endAngle)/2,n=(t.innerRadius+t.outerRadius)/2;return{x:t.x+Math.cos(e)*n,y:t.y+Math.sin(e)*n}},getArea:function(){var t=this._view;return Math.PI*((t.endAngle-t.startAngle)/(2*Math.PI))*(Math.pow(t.outerRadius,2)-Math.pow(t.innerRadius,2))},tooltipPosition:function(){var t=this._view,e=t.startAngle+(t.endAngle-t.startAngle)/2,n=(t.outerRadius-t.innerRadius)/2+t.innerRadius;return{x:t.x+Math.cos(e)*n,y:t.y+Math.sin(e)*n}},draw:function(){var t,e=this._chart.ctx,n=this._view,i="inner"===n.borderAlign?.33:0,a={x:n.x,y:n.y,innerRadius:n.innerRadius,outerRadius:Math.max(n.outerRadius-i,0),pixelMargin:i,startAngle:n.startAngle,endAngle:n.endAngle,fullCircles:Math.floor(n.circumference/at)};if(e.save(),e.fillStyle=n.backgroundColor,e.strokeStyle=n.borderColor,a.fullCircles){for(a.endAngle=a.startAngle+at,e.beginPath(),e.arc(a.x,a.y,a.outerRadius,a.startAngle,a.endAngle),e.arc(a.x,a.y,a.innerRadius,a.endAngle,a.startAngle,!0),e.closePath(),t=0;t<a.fullCircles;++t)e.fill();a.endAngle=a.startAngle+n.circumference%at}e.beginPath(),e.arc(a.x,a.y,a.outerRadius,a.startAngle,a.endAngle),e.arc(a.x,a.y,a.innerRadius,a.endAngle,a.startAngle,!0),e.closePath(),e.fill(),n.borderWidth&&ot(e,n,a),e.restore()}}),lt=H.valueOrDefault,ut=N.global.defaultColor;N._set("global",{elements:{line:{tension:.4,backgroundColor:ut,borderWidth:3,borderColor:ut,borderCapStyle:"butt",borderDash:[],borderDashOffset:0,borderJoinStyle:"miter",capBezierPoints:!0,fill:!0}}});var dt=K.extend({_type:"line",draw:function(){var t,e,n,i=this,a=i._view,r=i._chart.ctx,o=a.spanGaps,s=i._children.slice(),l=N.global,u=l.elements.line,d=-1,h=i._loop;if(s.length){if(i._loop){for(t=0;t<s.length;++t)if(e=H.previousItem(s,t),!s[t]._view.skip&&e._view.skip){s=s.slice(t).concat(s.slice(0,t)),h=o;break}h&&s.push(s[0])}for(r.save(),r.lineCap=a.borderCapStyle||u.borderCapStyle,r.setLineDash&&r.setLineDash(a.borderDash||u.borderDash),r.lineDashOffset=lt(a.borderDashOffset,u.borderDashOffset),r.lineJoin=a.borderJoinStyle||u.borderJoinStyle,r.lineWidth=lt(a.borderWidth,u.borderWidth),r.strokeStyle=a.borderColor||l.defaultColor,r.beginPath(),(n=s[0]._view).skip||(r.moveTo(n.x,n.y),d=0),t=1;t<s.length;++t)n=s[t]._view,e=-1===d?H.previousItem(s,t):s[d],n.skip||(d!==t-1&&!o||-1===d?r.moveTo(n.x,n.y):H.canvas.lineTo(r,e._view,n),d=t);h&&r.closePath(),r.stroke(),r.restore()}}}),ht=H.valueOrDefault,ct=N.global.defaultColor;function ft(t){var e=this._view;return!!e&&Math.abs(t-e.x)<e.radius+e.hitRadius}N._set("global",{elements:{point:{radius:3,pointStyle:"circle",backgroundColor:ct,borderColor:ct,borderWidth:1,hitRadius:1,hoverRadius:4,hoverBorderWidth:1}}});var gt=K.extend({_type:"point",inRange:function(t,e){var n=this._view;return!!n&&Math.pow(t-n.x,2)+Math.pow(e-n.y,2)<Math.pow(n.hitRadius+n.radius,2)},inLabelRange:ft,inXRange:ft,inYRange:function(t){var e=this._view;return!!e&&Math.abs(t-e.y)<e.radius+e.hitRadius},getCenterPoint:function(){var t=this._view;return{x:t.x,y:t.y}},getArea:function(){return Math.PI*Math.pow(this._view.radius,2)},tooltipPosition:function(){var t=this._view;return{x:t.x,y:t.y,padding:t.radius+t.borderWidth}},draw:function(t){var e=this._view,n=this._chart.ctx,i=e.pointStyle,a=e.rotation,r=e.radius,o=e.x,s=e.y,l=N.global,u=l.defaultColor;e.skip||(void 0===t||H.canvas._isPointInArea(e,t))&&(n.strokeStyle=e.borderColor||u,n.lineWidth=ht(e.borderWidth,l.elements.point.borderWidth),n.fillStyle=e.backgroundColor||u,H.canvas.drawPoint(n,i,r,o,s,a))}}),pt=N.global.defaultColor;function mt(t){return t&&void 0!==t.width}function vt(t){var e,n,i,a,r;return mt(t)?(r=t.width/2,e=t.x-r,n=t.x+r,i=Math.min(t.y,t.base),a=Math.max(t.y,t.base)):(r=t.height/2,e=Math.min(t.x,t.base),n=Math.max(t.x,t.base),i=t.y-r,a=t.y+r),{left:e,top:i,right:n,bottom:a}}function bt(t,e,n){return t===e?n:t===n?e:t}function xt(t,e,n){var i,a,r,o,s=t.borderWidth,l=function(t){var e=t.borderSkipped,n={};return e?(t.horizontal?t.base>t.x&&(e=bt(e,"left","right")):t.base<t.y&&(e=bt(e,"bottom","top")),n[e]=!0,n):n}(t);return H.isObject(s)?(i=+s.top||0,a=+s.right||0,r=+s.bottom||0,o=+s.left||0):i=a=r=o=+s||0,{t:l.top||i<0?0:i>n?n:i,r:l.right||a<0?0:a>e?e:a,b:l.bottom||r<0?0:r>n?n:r,l:l.left||o<0?0:o>e?e:o}}function yt(t,e,n){var i=null===e,a=null===n,r=!(!t||i&&a)&&vt(t);return r&&(i||e>=r.left&&e<=r.right)&&(a||n>=r.top&&n<=r.bottom)}N._set("global",{elements:{rectangle:{backgroundColor:pt,borderColor:pt,borderSkipped:"bottom",borderWidth:0}}});var _t=K.extend({_type:"rectangle",draw:function(){var t=this._chart.ctx,e=this._view,n=function(t){var e=vt(t),n=e.right-e.left,i=e.bottom-e.top,a=xt(t,n/2,i/2);return{outer:{x:e.left,y:e.top,w:n,h:i},inner:{x:e.left+a.l,y:e.top+a.t,w:n-a.l-a.r,h:i-a.t-a.b}}}(e),i=n.outer,a=n.inner;t.fillStyle=e.backgroundColor,t.fillRect(i.x,i.y,i.w,i.h),i.w===a.w&&i.h===a.h||(t.save(),t.beginPath(),t.rect(i.x,i.y,i.w,i.h),t.clip(),t.fillStyle=e.borderColor,t.rect(a.x,a.y,a.w,a.h),t.fill("evenodd"),t.restore())},height:function(){var t=this._view;return t.base-t.y},inRange:function(t,e){return yt(this._view,t,e)},inLabelRange:function(t,e){var n=this._view;return mt(n)?yt(n,t,null):yt(n,null,e)},inXRange:function(t){return yt(this._view,t,null)},inYRange:function(t){return yt(this._view,null,t)},getCenterPoint:function(){var t,e,n=this._view;return mt(n)?(t=n.x,e=(n.y+n.base)/2):(t=(n.x+n.base)/2,e=n.y),{x:t,y:e}},getArea:function(){var t=this._view;return mt(t)?t.width*Math.abs(t.y-t.base):t.height*Math.abs(t.x-t.base)},tooltipPosition:function(){var t=this._view;return{x:t.x,y:t.y}}}),kt={},wt=st,Mt=dt,St=gt,Ct=_t;kt.Arc=wt,kt.Line=Mt,kt.Point=St,kt.Rectangle=Ct;var Pt=H._deprecated,At=H.valueOrDefault;function Dt(t,e,n){var i,a,r=n.barThickness,o=e.stackCount,s=e.pixels[t],l=H.isNullOrUndef(r)?function(t,e){var n,i,a,r,o=t._length;for(a=1,r=e.length;a<r;++a)o=Math.min(o,Math.abs(e[a]-e[a-1]));for(a=0,r=t.getTicks().length;a<r;++a)i=t.getPixelForTick(a),o=a>0?Math.min(o,Math.abs(i-n)):o,n=i;return o}(e.scale,e.pixels):-1;return H.isNullOrUndef(r)?(i=l*n.categoryPercentage,a=n.barPercentage):(i=r*o,a=1),{chunk:i/o,ratio:a,start:s-i/2}}N._set("bar",{hover:{mode:"label"},scales:{xAxes:[{type:"category",offset:!0,gridLines:{offsetGridLines:!0}}],yAxes:[{type:"linear"}]}}),N._set("global",{datasets:{bar:{categoryPercentage:.8,barPercentage:.9}}});var Tt=it.extend({dataElementType:kt.Rectangle,_dataElementOptions:["backgroundColor","borderColor","borderSkipped","borderWidth","barPercentage","barThickness","categoryPercentage","maxBarThickness","minBarLength"],initialize:function(){var t,e,n=this;it.prototype.initialize.apply(n,arguments),(t=n.getMeta()).stack=n.getDataset().stack,t.bar=!0,e=n._getIndexScale().options,Pt("bar chart",e.barPercentage,"scales.[x/y]Axes.barPercentage","dataset.barPercentage"),Pt("bar chart",e.barThickness,"scales.[x/y]Axes.barThickness","dataset.barThickness"),Pt("bar chart",e.categoryPercentage,"scales.[x/y]Axes.categoryPercentage","dataset.categoryPercentage"),Pt("bar chart",n._getValueScale().options.minBarLength,"scales.[x/y]Axes.minBarLength","dataset.minBarLength"),Pt("bar chart",e.maxBarThickness,"scales.[x/y]Axes.maxBarThickness","dataset.maxBarThickness")},update:function(t){var e,n,i=this.getMeta().data;for(this._ruler=this.getRuler(),e=0,n=i.length;e<n;++e)this.updateElement(i[e],e,t)},updateElement:function(t,e,n){var i=this,a=i.getMeta(),r=i.getDataset(),o=i._resolveDataElementOptions(t,e);t._xScale=i.getScaleForId(a.xAxisID),t._yScale=i.getScaleForId(a.yAxisID),t._datasetIndex=i.index,t._index=e,t._model={backgroundColor:o.backgroundColor,borderColor:o.borderColor,borderSkipped:o.borderSkipped,borderWidth:o.borderWidth,datasetLabel:r.label,label:i.chart.data.labels[e]},H.isArray(r.data[e])&&(t._model.borderSkipped=null),i._updateElementGeometry(t,e,n,o),t.pivot()},_updateElementGeometry:function(t,e,n,i){var a=this,r=t._model,o=a._getValueScale(),s=o.getBasePixel(),l=o.isHorizontal(),u=a._ruler||a.getRuler(),d=a.calculateBarValuePixels(a.index,e,i),h=a.calculateBarIndexPixels(a.index,e,u,i);r.horizontal=l,r.base=n?s:d.base,r.x=l?n?s:d.head:h.center,r.y=l?h.center:n?s:d.head,r.height=l?h.size:void 0,r.width=l?void 0:h.size},_getStacks:function(t){var e,n,i=this._getIndexScale(),a=i._getMatchingVisibleMetas(this._type),r=i.options.stacked,o=a.length,s=[];for(e=0;e<o&&(n=a[e],(!1===r||-1===s.indexOf(n.stack)||void 0===r&&void 0===n.stack)&&s.push(n.stack),n.index!==t);++e);return s},getStackCount:function(){return this._getStacks().length},getStackIndex:function(t,e){var n=this._getStacks(t),i=void 0!==e?n.indexOf(e):-1;return-1===i?n.length-1:i},getRuler:function(){var t,e,n=this._getIndexScale(),i=[];for(t=0,e=this.getMeta().data.length;t<e;++t)i.push(n.getPixelForValue(null,t,this.index));return{pixels:i,start:n._startPixel,end:n._endPixel,stackCount:this.getStackCount(),scale:n}},calculateBarValuePixels:function(t,e,n){var i,a,r,o,s,l,u,d=this.chart,h=this._getValueScale(),c=h.isHorizontal(),f=d.data.datasets,g=h._getMatchingVisibleMetas(this._type),p=h._parseValue(f[t].data[e]),m=n.minBarLength,v=h.options.stacked,b=this.getMeta().stack,x=void 0===p.start?0:p.max>=0&&p.min>=0?p.min:p.max,y=void 0===p.start?p.end:p.max>=0&&p.min>=0?p.max-p.min:p.min-p.max,_=g.length;if(v||void 0===v&&void 0!==b)for(i=0;i<_&&(a=g[i]).index!==t;++i)a.stack===b&&(r=void 0===(u=h._parseValue(f[a.index].data[e])).start?u.end:u.min>=0&&u.max>=0?u.max:u.min,(p.min<0&&r<0||p.max>=0&&r>0)&&(x+=r));return o=h.getPixelForValue(x),l=(s=h.getPixelForValue(x+y))-o,void 0!==m&&Math.abs(l)<m&&(l=m,s=y>=0&&!c||y<0&&c?o-m:o+m),{size:l,base:o,head:s,center:s+l/2}},calculateBarIndexPixels:function(t,e,n,i){var a="flex"===i.barThickness?function(t,e,n){var i,a=e.pixels,r=a[t],o=t>0?a[t-1]:null,s=t<a.length-1?a[t+1]:null,l=n.categoryPercentage;return null===o&&(o=r-(null===s?e.end-e.start:s-r)),null===s&&(s=r+r-o),i=r-(r-Math.min(o,s))/2*l,{chunk:Math.abs(s-o)/2*l/e.stackCount,ratio:n.barPercentage,start:i}}(e,n,i):Dt(e,n,i),r=this.getStackIndex(t,this.getMeta().stack),o=a.start+a.chunk*r+a.chunk/2,s=Math.min(At(i.maxBarThickness,1/0),a.chunk*a.ratio);return{base:o-s/2,head:o+s/2,center:o,size:s}},draw:function(){var t=this.chart,e=this._getValueScale(),n=this.getMeta().data,i=this.getDataset(),a=n.length,r=0;for(H.canvas.clipArea(t.ctx,t.chartArea);r<a;++r){var o=e._parseValue(i.data[r]);isNaN(o.min)||isNaN(o.max)||n[r].draw()}H.canvas.unclipArea(t.ctx)},_resolveDataElementOptions:function(){var t=this,e=H.extend({},it.prototype._resolveDataElementOptions.apply(t,arguments)),n=t._getIndexScale().options,i=t._getValueScale().options;return e.barPercentage=At(n.barPercentage,e.barPercentage),e.barThickness=At(n.barThickness,e.barThickness),e.categoryPercentage=At(n.categoryPercentage,e.categoryPercentage),e.maxBarThickness=At(n.maxBarThickness,e.maxBarThickness),e.minBarLength=At(i.minBarLength,e.minBarLength),e}}),It=H.valueOrDefault,Ft=H.options.resolve;N._set("bubble",{hover:{mode:"single"},scales:{xAxes:[{type:"linear",position:"bottom",id:"x-axis-0"}],yAxes:[{type:"linear",position:"left",id:"y-axis-0"}]},tooltips:{callbacks:{title:function(){return""},label:function(t,e){var n=e.datasets[t.datasetIndex].label||"",i=e.datasets[t.datasetIndex].data[t.index];return n+": ("+t.xLabel+", "+t.yLabel+", "+i.r+")"}}}});var Ot=it.extend({dataElementType:kt.Point,_dataElementOptions:["backgroundColor","borderColor","borderWidth","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth","hoverRadius","hitRadius","pointStyle","rotation"],update:function(t){var e=this,n=e.getMeta().data;H.each(n,(function(n,i){e.updateElement(n,i,t)}))},updateElement:function(t,e,n){var i=this,a=i.getMeta(),r=t.custom||{},o=i.getScaleForId(a.xAxisID),s=i.getScaleForId(a.yAxisID),l=i._resolveDataElementOptions(t,e),u=i.getDataset().data[e],d=i.index,h=n?o.getPixelForDecimal(.5):o.getPixelForValue("object"==typeof u?u:NaN,e,d),c=n?s.getBasePixel():s.getPixelForValue(u,e,d);t._xScale=o,t._yScale=s,t._options=l,t._datasetIndex=d,t._index=e,t._model={backgroundColor:l.backgroundColor,borderColor:l.borderColor,borderWidth:l.borderWidth,hitRadius:l.hitRadius,pointStyle:l.pointStyle,rotation:l.rotation,radius:n?0:l.radius,skip:r.skip||isNaN(h)||isNaN(c),x:h,y:c},t.pivot()},setHoverStyle:function(t){var e=t._model,n=t._options,i=H.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=It(n.hoverBackgroundColor,i(n.backgroundColor)),e.borderColor=It(n.hoverBorderColor,i(n.borderColor)),e.borderWidth=It(n.hoverBorderWidth,n.borderWidth),e.radius=n.radius+n.hoverRadius},_resolveDataElementOptions:function(t,e){var n=this,i=n.chart,a=n.getDataset(),r=t.custom||{},o=a.data[e]||{},s=it.prototype._resolveDataElementOptions.apply(n,arguments),l={chart:i,dataIndex:e,dataset:a,datasetIndex:n.index};return n._cachedDataOpts===s&&(s=H.extend({},s)),s.radius=Ft([r.radius,o.r,n._config.radius,i.options.elements.point.radius],l,e),s}}),Lt=H.valueOrDefault,Rt=Math.PI,zt=2*Rt,Nt=Rt/2;N._set("doughnut",{animation:{animateRotate:!0,animateScale:!1},hover:{mode:"single"},legendCallback:function(t){var e,n,i,a=document.createElement("ul"),r=t.data,o=r.datasets,s=r.labels;if(a.setAttribute("class",t.id+"-legend"),o.length)for(e=0,n=o[0].data.length;e<n;++e)(i=a.appendChild(document.createElement("li"))).appendChild(document.createElement("span")).style.backgroundColor=o[0].backgroundColor[e],s[e]&&i.appendChild(document.createTextNode(s[e]));return a.outerHTML},legend:{labels:{generateLabels:function(t){var e=t.data;return e.labels.length&&e.datasets.length?e.labels.map((function(n,i){var a=t.getDatasetMeta(0),r=a.controller.getStyle(i);return{text:n,fillStyle:r.backgroundColor,strokeStyle:r.borderColor,lineWidth:r.borderWidth,hidden:isNaN(e.datasets[0].data[i])||a.data[i].hidden,index:i}})):[]}},onClick:function(t,e){var n,i,a,r=e.index,o=this.chart;for(n=0,i=(o.data.datasets||[]).length;n<i;++n)(a=o.getDatasetMeta(n)).data[r]&&(a.data[r].hidden=!a.data[r].hidden);o.update()}},cutoutPercentage:50,rotation:-Nt,circumference:zt,tooltips:{callbacks:{title:function(){return""},label:function(t,e){var n=e.labels[t.index],i=": "+e.datasets[t.datasetIndex].data[t.index];return H.isArray(n)?(n=n.slice())[0]+=i:n+=i,n}}}});var Bt=it.extend({dataElementType:kt.Arc,linkScales:H.noop,_dataElementOptions:["backgroundColor","borderColor","borderWidth","borderAlign","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth"],getRingIndex:function(t){for(var e=0,n=0;n<t;++n)this.chart.isDatasetVisible(n)&&++e;return e},update:function(t){var e,n,i,a,r=this,o=r.chart,s=o.chartArea,l=o.options,u=1,d=1,h=0,c=0,f=r.getMeta(),g=f.data,p=l.cutoutPercentage/100||0,m=l.circumference,v=r._getRingWeight(r.index);if(m<zt){var b=l.rotation%zt,x=(b+=b>=Rt?-zt:b<-Rt?zt:0)+m,y=Math.cos(b),_=Math.sin(b),k=Math.cos(x),w=Math.sin(x),M=b<=0&&x>=0||x>=zt,S=b<=Nt&&x>=Nt||x>=zt+Nt,C=b<=-Nt&&x>=-Nt||x>=Rt+Nt,P=b===-Rt||x>=Rt?-1:Math.min(y,y*p,k,k*p),A=C?-1:Math.min(_,_*p,w,w*p),D=M?1:Math.max(y,y*p,k,k*p),T=S?1:Math.max(_,_*p,w,w*p);u=(D-P)/2,d=(T-A)/2,h=-(D+P)/2,c=-(T+A)/2}for(i=0,a=g.length;i<a;++i)g[i]._options=r._resolveDataElementOptions(g[i],i);for(o.borderWidth=r.getMaxBorderWidth(),e=(s.right-s.left-o.borderWidth)/u,n=(s.bottom-s.top-o.borderWidth)/d,o.outerRadius=Math.max(Math.min(e,n)/2,0),o.innerRadius=Math.max(o.outerRadius*p,0),o.radiusLength=(o.outerRadius-o.innerRadius)/(r._getVisibleDatasetWeightTotal()||1),o.offsetX=h*o.outerRadius,o.offsetY=c*o.outerRadius,f.total=r.calculateTotal(),r.outerRadius=o.outerRadius-o.radiusLength*r._getRingWeightOffset(r.index),r.innerRadius=Math.max(r.outerRadius-o.radiusLength*v,0),i=0,a=g.length;i<a;++i)r.updateElement(g[i],i,t)},updateElement:function(t,e,n){var i=this,a=i.chart,r=a.chartArea,o=a.options,s=o.animation,l=(r.left+r.right)/2,u=(r.top+r.bottom)/2,d=o.rotation,h=o.rotation,c=i.getDataset(),f=n&&s.animateRotate?0:t.hidden?0:i.calculateCircumference(c.data[e])*(o.circumference/zt),g=n&&s.animateScale?0:i.innerRadius,p=n&&s.animateScale?0:i.outerRadius,m=t._options||{};H.extend(t,{_datasetIndex:i.index,_index:e,_model:{backgroundColor:m.backgroundColor,borderColor:m.borderColor,borderWidth:m.borderWidth,borderAlign:m.borderAlign,x:l+a.offsetX,y:u+a.offsetY,startAngle:d,endAngle:h,circumference:f,outerRadius:p,innerRadius:g,label:H.valueAtIndexOrDefault(c.label,e,a.data.labels[e])}});var v=t._model;n&&s.animateRotate||(v.startAngle=0===e?o.rotation:i.getMeta().data[e-1]._model.endAngle,v.endAngle=v.startAngle+v.circumference),t.pivot()},calculateTotal:function(){var t,e=this.getDataset(),n=this.getMeta(),i=0;return H.each(n.data,(function(n,a){t=e.data[a],isNaN(t)||n.hidden||(i+=Math.abs(t))})),i},calculateCircumference:function(t){var e=this.getMeta().total;return e>0&&!isNaN(t)?zt*(Math.abs(t)/e):0},getMaxBorderWidth:function(t){var e,n,i,a,r,o,s,l,u=0,d=this.chart;if(!t)for(e=0,n=d.data.datasets.length;e<n;++e)if(d.isDatasetVisible(e)){t=(i=d.getDatasetMeta(e)).data,e!==this.index&&(r=i.controller);break}if(!t)return 0;for(e=0,n=t.length;e<n;++e)a=t[e],r?(r._configure(),o=r._resolveDataElementOptions(a,e)):o=a._options,"inner"!==o.borderAlign&&(s=o.borderWidth,u=(l=o.hoverBorderWidth)>(u=s>u?s:u)?l:u);return u},setHoverStyle:function(t){var e=t._model,n=t._options,i=H.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth},e.backgroundColor=Lt(n.hoverBackgroundColor,i(n.backgroundColor)),e.borderColor=Lt(n.hoverBorderColor,i(n.borderColor)),e.borderWidth=Lt(n.hoverBorderWidth,n.borderWidth)},_getRingWeightOffset:function(t){for(var e=0,n=0;n<t;++n)this.chart.isDatasetVisible(n)&&(e+=this._getRingWeight(n));return e},_getRingWeight:function(t){return Math.max(Lt(this.chart.data.datasets[t].weight,1),0)},_getVisibleDatasetWeightTotal:function(){return this._getRingWeightOffset(this.chart.data.datasets.length)}});N._set("horizontalBar",{hover:{mode:"index",axis:"y"},scales:{xAxes:[{type:"linear",position:"bottom"}],yAxes:[{type:"category",position:"left",offset:!0,gridLines:{offsetGridLines:!0}}]},elements:{rectangle:{borderSkipped:"left"}},tooltips:{mode:"index",axis:"y"}}),N._set("global",{datasets:{horizontalBar:{categoryPercentage:.8,barPercentage:.9}}});var Et=Tt.extend({_getValueScaleId:function(){return this.getMeta().xAxisID},_getIndexScaleId:function(){return this.getMeta().yAxisID}}),Wt=H.valueOrDefault,Vt=H.options.resolve,Ht=H.canvas._isPointInArea;function jt(t,e){var n=t&&t.options.ticks||{},i=n.reverse,a=void 0===n.min?e:0,r=void 0===n.max?e:0;return{start:i?r:a,end:i?a:r}}function qt(t,e,n){var i=n/2,a=jt(t,i),r=jt(e,i);return{top:r.end,right:a.end,bottom:r.start,left:a.start}}function Ut(t){var e,n,i,a;return H.isObject(t)?(e=t.top,n=t.right,i=t.bottom,a=t.left):e=n=i=a=t,{top:e,right:n,bottom:i,left:a}}N._set("line",{showLines:!0,spanGaps:!1,hover:{mode:"label"},scales:{xAxes:[{type:"category",id:"x-axis-0"}],yAxes:[{type:"linear",id:"y-axis-0"}]}});var Yt=it.extend({datasetElementType:kt.Line,dataElementType:kt.Point,_datasetElementOptions:["backgroundColor","borderCapStyle","borderColor","borderDash","borderDashOffset","borderJoinStyle","borderWidth","cubicInterpolationMode","fill"],_dataElementOptions:{backgroundColor:"pointBackgroundColor",borderColor:"pointBorderColor",borderWidth:"pointBorderWidth",hitRadius:"pointHitRadius",hoverBackgroundColor:"pointHoverBackgroundColor",hoverBorderColor:"pointHoverBorderColor",hoverBorderWidth:"pointHoverBorderWidth",hoverRadius:"pointHoverRadius",pointStyle:"pointStyle",radius:"pointRadius",rotation:"pointRotation"},update:function(t){var e,n,i=this,a=i.getMeta(),r=a.dataset,o=a.data||[],s=i.chart.options,l=i._config,u=i._showLine=Wt(l.showLine,s.showLines);for(i._xScale=i.getScaleForId(a.xAxisID),i._yScale=i.getScaleForId(a.yAxisID),u&&(void 0!==l.tension&&void 0===l.lineTension&&(l.lineTension=l.tension),r._scale=i._yScale,r._datasetIndex=i.index,r._children=o,r._model=i._resolveDatasetElementOptions(r),r.pivot()),e=0,n=o.length;e<n;++e)i.updateElement(o[e],e,t);for(u&&0!==r._model.tension&&i.updateBezierControlPoints(),e=0,n=o.length;e<n;++e)o[e].pivot()},updateElement:function(t,e,n){var i,a,r=this,o=r.getMeta(),s=t.custom||{},l=r.getDataset(),u=r.index,d=l.data[e],h=r._xScale,c=r._yScale,f=o.dataset._model,g=r._resolveDataElementOptions(t,e);i=h.getPixelForValue("object"==typeof d?d:NaN,e,u),a=n?c.getBasePixel():r.calculatePointY(d,e,u),t._xScale=h,t._yScale=c,t._options=g,t._datasetIndex=u,t._index=e,t._model={x:i,y:a,skip:s.skip||isNaN(i)||isNaN(a),radius:g.radius,pointStyle:g.pointStyle,rotation:g.rotation,backgroundColor:g.backgroundColor,borderColor:g.borderColor,borderWidth:g.borderWidth,tension:Wt(s.tension,f?f.tension:0),steppedLine:!!f&&f.steppedLine,hitRadius:g.hitRadius}},_resolveDatasetElementOptions:function(t){var e=this,n=e._config,i=t.custom||{},a=e.chart.options,r=a.elements.line,o=it.prototype._resolveDatasetElementOptions.apply(e,arguments);return o.spanGaps=Wt(n.spanGaps,a.spanGaps),o.tension=Wt(n.lineTension,r.tension),o.steppedLine=Vt([i.steppedLine,n.steppedLine,r.stepped]),o.clip=Ut(Wt(n.clip,qt(e._xScale,e._yScale,o.borderWidth))),o},calculatePointY:function(t,e,n){var i,a,r,o,s,l,u,d=this.chart,h=this._yScale,c=0,f=0;if(h.options.stacked){for(s=+h.getRightValue(t),u=(l=d._getSortedVisibleDatasetMetas()).length,i=0;i<u&&(r=l[i]).index!==n;++i)a=d.data.datasets[r.index],"line"===r.type&&r.yAxisID===h.id&&((o=+h.getRightValue(a.data[e]))<0?f+=o||0:c+=o||0);return s<0?h.getPixelForValue(f+s):h.getPixelForValue(c+s)}return h.getPixelForValue(t)},updateBezierControlPoints:function(){var t,e,n,i,a=this.chart,r=this.getMeta(),o=r.dataset._model,s=a.chartArea,l=r.data||[];function u(t,e,n){return Math.max(Math.min(t,n),e)}if(o.spanGaps&&(l=l.filter((function(t){return!t._model.skip}))),"monotone"===o.cubicInterpolationMode)H.splineCurveMonotone(l);else for(t=0,e=l.length;t<e;++t)n=l[t]._model,i=H.splineCurve(H.previousItem(l,t)._model,n,H.nextItem(l,t)._model,o.tension),n.controlPointPreviousX=i.previous.x,n.controlPointPreviousY=i.previous.y,n.controlPointNextX=i.next.x,n.controlPointNextY=i.next.y;if(a.options.elements.line.capBezierPoints)for(t=0,e=l.length;t<e;++t)n=l[t]._model,Ht(n,s)&&(t>0&&Ht(l[t-1]._model,s)&&(n.controlPointPreviousX=u(n.controlPointPreviousX,s.left,s.right),n.controlPointPreviousY=u(n.controlPointPreviousY,s.top,s.bottom)),t<l.length-1&&Ht(l[t+1]._model,s)&&(n.controlPointNextX=u(n.controlPointNextX,s.left,s.right),n.controlPointNextY=u(n.controlPointNextY,s.top,s.bottom)))},draw:function(){var t,e=this.chart,n=this.getMeta(),i=n.data||[],a=e.chartArea,r=e.canvas,o=0,s=i.length;for(this._showLine&&(t=n.dataset._model.clip,H.canvas.clipArea(e.ctx,{left:!1===t.left?0:a.left-t.left,right:!1===t.right?r.width:a.right+t.right,top:!1===t.top?0:a.top-t.top,bottom:!1===t.bottom?r.height:a.bottom+t.bottom}),n.dataset.draw(),H.canvas.unclipArea(e.ctx));o<s;++o)i[o].draw(a)},setHoverStyle:function(t){var e=t._model,n=t._options,i=H.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=Wt(n.hoverBackgroundColor,i(n.backgroundColor)),e.borderColor=Wt(n.hoverBorderColor,i(n.borderColor)),e.borderWidth=Wt(n.hoverBorderWidth,n.borderWidth),e.radius=Wt(n.hoverRadius,n.radius)}}),Gt=H.options.resolve;N._set("polarArea",{scale:{type:"radialLinear",angleLines:{display:!1},gridLines:{circular:!0},pointLabels:{display:!1},ticks:{beginAtZero:!0}},animation:{animateRotate:!0,animateScale:!0},startAngle:-.5*Math.PI,legendCallback:function(t){var e,n,i,a=document.createElement("ul"),r=t.data,o=r.datasets,s=r.labels;if(a.setAttribute("class",t.id+"-legend"),o.length)for(e=0,n=o[0].data.length;e<n;++e)(i=a.appendChild(document.createElement("li"))).appendChild(document.createElement("span")).style.backgroundColor=o[0].backgroundColor[e],s[e]&&i.appendChild(document.createTextNode(s[e]));return a.outerHTML},legend:{labels:{generateLabels:function(t){var e=t.data;return e.labels.length&&e.datasets.length?e.labels.map((function(n,i){var a=t.getDatasetMeta(0),r=a.controller.getStyle(i);return{text:n,fillStyle:r.backgroundColor,strokeStyle:r.borderColor,lineWidth:r.borderWidth,hidden:isNaN(e.datasets[0].data[i])||a.data[i].hidden,index:i}})):[]}},onClick:function(t,e){var n,i,a,r=e.index,o=this.chart;for(n=0,i=(o.data.datasets||[]).length;n<i;++n)(a=o.getDatasetMeta(n)).data[r].hidden=!a.data[r].hidden;o.update()}},tooltips:{callbacks:{title:function(){return""},label:function(t,e){return e.labels[t.index]+": "+t.yLabel}}}});var Xt=it.extend({dataElementType:kt.Arc,linkScales:H.noop,_dataElementOptions:["backgroundColor","borderColor","borderWidth","borderAlign","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth"],_getIndexScaleId:function(){return this.chart.scale.id},_getValueScaleId:function(){return this.chart.scale.id},update:function(t){var e,n,i,a=this,r=a.getDataset(),o=a.getMeta(),s=a.chart.options.startAngle||0,l=a._starts=[],u=a._angles=[],d=o.data;for(a._updateRadius(),o.count=a.countVisibleElements(),e=0,n=r.data.length;e<n;e++)l[e]=s,i=a._computeAngle(e),u[e]=i,s+=i;for(e=0,n=d.length;e<n;++e)d[e]._options=a._resolveDataElementOptions(d[e],e),a.updateElement(d[e],e,t)},_updateRadius:function(){var t=this,e=t.chart,n=e.chartArea,i=e.options,a=Math.min(n.right-n.left,n.bottom-n.top);e.outerRadius=Math.max(a/2,0),e.innerRadius=Math.max(i.cutoutPercentage?e.outerRadius/100*i.cutoutPercentage:1,0),e.radiusLength=(e.outerRadius-e.innerRadius)/e.getVisibleDatasetCount(),t.outerRadius=e.outerRadius-e.radiusLength*t.index,t.innerRadius=t.outerRadius-e.radiusLength},updateElement:function(t,e,n){var i=this,a=i.chart,r=i.getDataset(),o=a.options,s=o.animation,l=a.scale,u=a.data.labels,d=l.xCenter,h=l.yCenter,c=o.startAngle,f=t.hidden?0:l.getDistanceFromCenterForValue(r.data[e]),g=i._starts[e],p=g+(t.hidden?0:i._angles[e]),m=s.animateScale?0:l.getDistanceFromCenterForValue(r.data[e]),v=t._options||{};H.extend(t,{_datasetIndex:i.index,_index:e,_scale:l,_model:{backgroundColor:v.backgroundColor,borderColor:v.borderColor,borderWidth:v.borderWidth,borderAlign:v.borderAlign,x:d,y:h,innerRadius:0,outerRadius:n?m:f,startAngle:n&&s.animateRotate?c:g,endAngle:n&&s.animateRotate?c:p,label:H.valueAtIndexOrDefault(u,e,u[e])}}),t.pivot()},countVisibleElements:function(){var t=this.getDataset(),e=this.getMeta(),n=0;return H.each(e.data,(function(e,i){isNaN(t.data[i])||e.hidden||n++})),n},setHoverStyle:function(t){var e=t._model,n=t._options,i=H.getHoverColor,a=H.valueOrDefault;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth},e.backgroundColor=a(n.hoverBackgroundColor,i(n.backgroundColor)),e.borderColor=a(n.hoverBorderColor,i(n.borderColor)),e.borderWidth=a(n.hoverBorderWidth,n.borderWidth)},_computeAngle:function(t){var e=this,n=this.getMeta().count,i=e.getDataset(),a=e.getMeta();if(isNaN(i.data[t])||a.data[t].hidden)return 0;var r={chart:e.chart,dataIndex:t,dataset:i,datasetIndex:e.index};return Gt([e.chart.options.elements.arc.angle,2*Math.PI/n],r,t)}});N._set("pie",H.clone(N.doughnut)),N._set("pie",{cutoutPercentage:0});var Kt=Bt,Zt=H.valueOrDefault;N._set("radar",{spanGaps:!1,scale:{type:"radialLinear"},elements:{line:{fill:"start",tension:0}}});var 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t=this,e=t._options.callbacks,n=e.beforeFooter.apply(t,arguments),i=e.footer.apply(t,arguments),a=e.afterFooter.apply(t,arguments),r=[];return r=Ee(r,We(n)),r=Ee(r,We(i)),r=Ee(r,We(a))},update:function(t){var e,n,i,a,r,o,s,l,u,d,h=this,c=h._options,f=h._model,g=h._model=Ve(c),p=h._active,m=h._data,v={xAlign:f.xAlign,yAlign:f.yAlign},b={x:f.x,y:f.y},x={width:f.width,height:f.height},y={x:f.caretX,y:f.caretY};if(p.length){g.opacity=1;var _=[],k=[];y=Be[c.position].call(h,p,h._eventPosition);var w=[];for(e=0,n=p.length;e<n;++e)w.push((i=p[e],a=void 0,r=void 0,o=void 0,s=void 0,l=void 0,u=void 0,d=void 0,a=i._xScale,r=i._yScale||i._scale,o=i._index,s=i._datasetIndex,l=i._chart.getDatasetMeta(s).controller,u=l._getIndexScale(),d=l._getValueScale(),{xLabel:a?a.getLabelForIndex(o,s):"",yLabel:r?r.getLabelForIndex(o,s):"",label:u?""+u.getLabelForIndex(o,s):"",value:d?""+d.getLabelForIndex(o,s):"",index:o,datasetIndex:s,x:i._model.x,y:i._model.y}));c.filter&&(w=w.filter((function(t){return 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i,a,r,o,s,l,u=n.caretSize,d=n.cornerRadius,h=n.xAlign,c=n.yAlign,f=t.x,g=t.y,p=e.width,m=e.height;if("center"===c)s=g+m/2,"left"===h?(a=(i=f)-u,r=i,o=s+u,l=s-u):(a=(i=f+p)+u,r=i,o=s-u,l=s+u);else if("left"===h?(i=(a=f+d+u)-u,r=a+u):"right"===h?(i=(a=f+p-d-u)-u,r=a+u):(i=(a=n.caretX)-u,r=a+u),"top"===c)s=(o=g)-u,l=o;else{s=(o=g+m)+u,l=o;var v=r;r=i,i=v}return{x1:i,x2:a,x3:r,y1:o,y2:s,y3:l}},drawTitle:function(t,e,n){var i,a,r,o=e.title,s=o.length;if(s){var l=Ne(e.rtl,e.x,e.width);for(t.x=He(e,e._titleAlign),n.textAlign=l.textAlign(e._titleAlign),n.textBaseline="middle",i=e.titleFontSize,a=e.titleSpacing,n.fillStyle=e.titleFontColor,n.font=H.fontString(i,e._titleFontStyle,e._titleFontFamily),r=0;r<s;++r)n.fillText(o[r],l.x(t.x),t.y+i/2),t.y+=i+a,r+1===s&&(t.y+=e.titleMarginBottom-a)}},drawBody:function(t,e,n){var i,a,r,o,s,l,u,d,h=e.bodyFontSize,c=e.bodySpacing,f=e._bodyAlign,g=e.body,p=e.displayColors,m=0,v=p?He(e,"left"):0,b=Ne(e.rtl,e.x,e.width),x=function(e){n.fillText(e,b.x(t.x+m),t.y+h/2),t.y+=h+c},y=b.textAlign(f);for(n.textAlign=f,n.textBaseline="middle",n.font=H.fontString(h,e._bodyFontStyle,e._bodyFontFamily),t.x=He(e,y),n.fillStyle=e.bodyFontColor,H.each(e.beforeBody,x),m=p&&"right"!==y?"center"===f?h/2+1:h+2:0,s=0,u=g.length;s<u;++s){for(i=g[s],a=e.labelTextColors[s],r=e.labelColors[s],n.fillStyle=a,H.each(i.before,x),l=0,d=(o=i.lines).length;l<d;++l){if(p){var _=b.x(v);n.fillStyle=e.legendColorBackground,n.fillRect(b.leftForLtr(_,h),t.y,h,h),n.lineWidth=1,n.strokeStyle=r.borderColor,n.strokeRect(b.leftForLtr(_,h),t.y,h,h),n.fillStyle=r.backgroundColor,n.fillRect(b.leftForLtr(b.xPlus(_,1),h-2),t.y+1,h-2,h-2),n.fillStyle=a}x(o[l])}H.each(i.after,x)}m=0,H.each(e.afterBody,x),t.y-=c},drawFooter:function(t,e,n){var i,a,r=e.footer,o=r.length;if(o){var s=Ne(e.rtl,e.x,e.width);for(t.x=He(e,e._footerAlign),t.y+=e.footerMarginTop,n.textAlign=s.textAlign(e._footerAlign),n.textBaseline="middle",i=e.footerFontSize,n.fillStyle=e.footerFontColor,n.font=H.fontString(i,e._footerFontStyle,e._footerFontFamily),a=0;a<o;++a)n.fillText(r[a],s.x(t.x),t.y+i/2),t.y+=i+e.footerSpacing}},drawBackground:function(t,e,n,i){n.fillStyle=e.backgroundColor,n.strokeStyle=e.borderColor,n.lineWidth=e.borderWidth;var a=e.xAlign,r=e.yAlign,o=t.x,s=t.y,l=i.width,u=i.height,d=e.cornerRadius;n.beginPath(),n.moveTo(o+d,s),"top"===r&&this.drawCaret(t,i),n.lineTo(o+l-d,s),n.quadraticCurveTo(o+l,s,o+l,s+d),"center"===r&&"right"===a&&this.drawCaret(t,i),n.lineTo(o+l,s+u-d),n.quadraticCurveTo(o+l,s+u,o+l-d,s+u),"bottom"===r&&this.drawCaret(t,i),n.lineTo(o+d,s+u),n.quadraticCurveTo(o,s+u,o,s+u-d),"center"===r&&"left"===a&&this.drawCaret(t,i),n.lineTo(o,s+d),n.quadraticCurveTo(o,s,o+d,s),n.closePath(),n.fill(),e.borderWidth>0&&n.stroke()},draw:function(){var t=this._chart.ctx,e=this._view;if(0!==e.opacity){var n={width:e.width,height:e.height},i={x:e.x,y:e.y},a=Math.abs(e.opacity<.001)?0:e.opacity,r=e.title.length||e.beforeBody.length||e.body.length||e.afterBody.length||e.footer.length;this._options.enabled&&r&&(t.save(),t.globalAlpha=a,this.drawBackground(i,e,t,n),i.y+=e.yPadding,H.rtl.overrideTextDirection(t,e.textDirection),this.drawTitle(i,e,t),this.drawBody(i,e,t),this.drawFooter(i,e,t),H.rtl.restoreTextDirection(t,e.textDirection),t.restore())}},handleEvent:function(t){var e,n=this,i=n._options;return n._lastActive=n._lastActive||[],"mouseout"===t.type?n._active=[]:(n._active=n._chart.getElementsAtEventForMode(t,i.mode,i),i.reverse&&n._active.reverse()),(e=!H.arrayEquals(n._active,n._lastActive))&&(n._lastActive=n._active,(i.enabled||i.custom)&&(n._eventPosition={x:t.x,y:t.y},n.update(!0),n.pivot())),e}}),Ue=Be,Ye=qe;Ye.positioners=Ue;var Ge=H.valueOrDefault;function Xe(){return H.merge(Object.create(null),[].slice.call(arguments),{merger:function(t,e,n,i){if("xAxes"===t||"yAxes"===t){var a,r,o,s=n[t].length;for(e[t]||(e[t]=[]),a=0;a<s;++a)o=n[t][a],r=Ge(o.type,"xAxes"===t?"category":"linear"),a>=e[t].length&&e[t].push({}),!e[t][a].type||o.type&&o.type!==e[t][a].type?H.merge(e[t][a],[Re.getScaleDefaults(r),o]):H.merge(e[t][a],o)}else H._merger(t,e,n,i)}})}function Ke(){return H.merge(Object.create(null),[].slice.call(arguments),{merger:function(t,e,n,i){var a=e[t]||Object.create(null),r=n[t];"scales"===t?e[t]=Xe(a,r):"scale"===t?e[t]=H.merge(a,[Re.getScaleDefaults(r.type),r]):H._merger(t,e,n,i)}})}function Ze(t){var e=t.options;H.each(t.scales,(function(e){pe.removeBox(t,e)})),e=Ke(N.global,N[t.config.type],e),t.options=t.config.options=e,t.ensureScalesHaveIDs(),t.buildOrUpdateScales(),t.tooltip._options=e.tooltips,t.tooltip.initialize()}function $e(t,e,n){var i,a=function(t){return t.id===i};do{i=e+n++}while(H.findIndex(t,a)>=0);return i}function 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s={width:r,height:o};Le.notify(e,"resize",[s]),n.onResize&&n.onResize(e,s),e.stop(),e.update({duration:n.responsiveAnimationDuration})}},ensureScalesHaveIDs:function(){var t=this.options,e=t.scales||{},n=t.scale;H.each(e.xAxes,(function(t,n){t.id||(t.id=$e(e.xAxes,"x-axis-",n))})),H.each(e.yAxes,(function(t,n){t.id||(t.id=$e(e.yAxes,"y-axis-",n))})),n&&(n.id=n.id||"scale")},buildOrUpdateScales:function(){var t=this,e=t.options,n=t.scales||{},i=[],a=Object.keys(n).reduce((function(t,e){return t[e]=!1,t}),{});e.scales&&(i=i.concat((e.scales.xAxes||[]).map((function(t){return{options:t,dtype:"category",dposition:"bottom"}})),(e.scales.yAxes||[]).map((function(t){return{options:t,dtype:"linear",dposition:"left"}})))),e.scale&&i.push({options:e.scale,dtype:"radialLinear",isDefault:!0,dposition:"chartArea"}),H.each(i,(function(e){var i=e.options,r=i.id,o=Ge(i.type,e.dtype);Je(i.position)!==Je(e.dposition)&&(i.position=e.dposition),a[r]=!0;var s=null;if(r in n&&n[r].type===o)(s=n[r]).options=i,s.ctx=t.ctx,s.chart=t;else{var l=Re.getScaleConstructor(o);if(!l)return;s=new l({id:r,type:o,options:i,ctx:t.ctx,chart:t}),n[s.id]=s}s.mergeTicksOptions(),e.isDefault&&(t.scale=s)})),H.each(a,(function(t,e){t||delete n[e]})),t.scales=n,Re.addScalesToLayout(this)},buildOrUpdateControllers:function(){var t,e,n=this,i=[],a=n.data.datasets;for(t=0,e=a.length;t<e;t++){var r=a[t],o=n.getDatasetMeta(t),s=r.type||n.config.type;if(o.type&&o.type!==s&&(n.destroyDatasetMeta(t),o=n.getDatasetMeta(t)),o.type=s,o.order=r.order||0,o.index=t,o.controller)o.controller.updateIndex(t),o.controller.linkScales();else{var l=Jt[o.type];if(void 0===l)throw new Error('"'+o.type+'" is not a chart type.');o.controller=new l(n,t),i.push(o.controller)}}return i},resetElements:function(){var t=this;H.each(t.data.datasets,(function(e,n){t.getDatasetMeta(n).controller.reset()}),t)},reset:function(){this.resetElements(),this.tooltip.initialize()},update:function(t){var e,n,i=this;if(t&&"object"==typeof t||(t={duration:t,lazy:arguments[1]}),Ze(i),Le._invalidate(i),!1!==Le.notify(i,"beforeUpdate")){i.tooltip._data=i.data;var a=i.buildOrUpdateControllers();for(e=0,n=i.data.datasets.length;e<n;e++)i.getDatasetMeta(e).controller.buildOrUpdateElements();i.updateLayout(),i.options.animation&&i.options.animation.duration&&H.each(a,(function(t){t.reset()})),i.updateDatasets(),i.tooltip.initialize(),i.lastActive=[],Le.notify(i,"afterUpdate"),i._layers.sort(Qe("z","_idx")),i._bufferedRender?i._bufferedRequest={duration:t.duration,easing:t.easing,lazy:t.lazy}:i.render(t)}},updateLayout:function(){var t=this;!1!==Le.notify(t,"beforeLayout")&&(pe.update(this,this.width,this.height),t._layers=[],H.each(t.boxes,(function(e){e._configure&&e._configure(),t._layers.push.apply(t._layers,e._layers())}),t),t._layers.forEach((function(t,e){t._idx=e})),Le.notify(t,"afterScaleUpdate"),Le.notify(t,"afterLayout"))},updateDatasets:function(){if(!1!==Le.notify(this,"beforeDatasetsUpdate")){for(var t=0,e=this.data.datasets.length;t<e;++t)this.updateDataset(t);Le.notify(this,"afterDatasetsUpdate")}},updateDataset:function(t){var e=this.getDatasetMeta(t),n={meta:e,index:t};!1!==Le.notify(this,"beforeDatasetUpdate",[n])&&(e.controller._update(),Le.notify(this,"afterDatasetUpdate",[n]))},render:function(t){var e=this;t&&"object"==typeof t||(t={duration:t,lazy:arguments[1]});var n=e.options.animation,i=Ge(t.duration,n&&n.duration),a=t.lazy;if(!1!==Le.notify(e,"beforeRender")){var r=function(t){Le.notify(e,"afterRender"),H.callback(n&&n.onComplete,[t],e)};if(n&&i){var o=new $({numSteps:i/16.66,easing:t.easing||n.easing,render:function(t,e){var n=H.easing.effects[e.easing],i=e.currentStep,a=i/e.numSteps;t.draw(n(a),a,i)},onAnimationProgress:n.onProgress,onAnimationComplete:r});J.addAnimation(e,o,i,a)}else e.draw(),r(new $({numSteps:0,chart:e}));return e}},draw:function(t){var e,n,i=this;if(i.clear(),H.isNullOrUndef(t)&&(t=1),i.transition(t),!(i.width<=0||i.height<=0)&&!1!==Le.notify(i,"beforeDraw",[t])){for(n=i._layers,e=0;e<n.length&&n[e].z<=0;++e)n[e].draw(i.chartArea);for(i.drawDatasets(t);e<n.length;++e)n[e].draw(i.chartArea);i._drawTooltip(t),Le.notify(i,"afterDraw",[t])}},transition:function(t){for(var e=0,n=(this.data.datasets||[]).length;e<n;++e)this.isDatasetVisible(e)&&this.getDatasetMeta(e).controller.transition(t);this.tooltip.transition(t)},_getSortedDatasetMetas:function(t){var e,n,i=[];for(e=0,n=(this.data.datasets||[]).length;e<n;++e)t&&!this.isDatasetVisible(e)||i.push(this.getDatasetMeta(e));return i.sort(Qe("order","index")),i},_getSortedVisibleDatasetMetas:function(){return this._getSortedDatasetMetas(!0)},drawDatasets:function(t){var e,n;if(!1!==Le.notify(this,"beforeDatasetsDraw",[t])){for(n=(e=this._getSortedVisibleDatasetMetas()).length-1;n>=0;--n)this.drawDataset(e[n],t);Le.notify(this,"afterDatasetsDraw",[t])}},drawDataset:function(t,e){var n={meta:t,index:t.index,easingValue:e};!1!==Le.notify(this,"beforeDatasetDraw",[n])&&(t.controller.draw(e),Le.notify(this,"afterDatasetDraw",[n]))},_drawTooltip:function(t){var e=this.tooltip,n={tooltip:e,easingValue:t};!1!==Le.notify(this,"beforeTooltipDraw",[n])&&(e.draw(),Le.notify(this,"afterTooltipDraw",[n]))},getElementAtEvent:function(t){return re.modes.single(this,t)},getElementsAtEvent:function(t){return re.modes.label(this,t,{intersect:!0})},getElementsAtXAxis:function(t){return re.modes["x-axis"](this,t,{intersect:!0})},getElementsAtEventForMode:function(t,e,n){var i=re.modes[e];return"function"==typeof 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t,e,n=this,i=n.canvas;for(n.stop(),t=0,e=n.data.datasets.length;t<e;++t)n.destroyDatasetMeta(t);i&&(n.unbindEvents(),H.canvas.clear(n),Oe.releaseContext(n.ctx),n.canvas=null,n.ctx=null),Le.notify(n,"destroy"),delete tn.instances[n.id]},toBase64Image:function(){return this.canvas.toDataURL.apply(this.canvas,arguments)},initToolTip:function(){var t=this;t.tooltip=new Ye({_chart:t,_chartInstance:t,_data:t.data,_options:t.options.tooltips},t)},bindEvents:function(){var t=this,e=t._listeners={},n=function(){t.eventHandler.apply(t,arguments)};H.each(t.options.events,(function(i){Oe.addEventListener(t,i,n),e[i]=n})),t.options.responsive&&(n=function(){t.resize()},Oe.addEventListener(t,"resize",n),e.resize=n)},unbindEvents:function(){var t=this,e=t._listeners;e&&(delete t._listeners,H.each(e,(function(e,n){Oe.removeEventListener(t,n,e)})))},updateHoverStyle:function(t,e,n){var i,a,r,o=n?"set":"remove";for(a=0,r=t.length;a<r;++a)(i=t[a])&&this.getDatasetMeta(i._datasetIndex).controller[o+"HoverStyle"](i);"dataset"===e&&this.getDatasetMeta(t[0]._datasetIndex).controller["_"+o+"DatasetHoverStyle"]()},eventHandler:function(t){var e=this,n=e.tooltip;if(!1!==Le.notify(e,"beforeEvent",[t])){e._bufferedRender=!0,e._bufferedRequest=null;var i=e.handleEvent(t);n&&(i=n._start?n.handleEvent(t):i|n.handleEvent(t)),Le.notify(e,"afterEvent",[t]);var a=e._bufferedRequest;return a?e.render(a):i&&!e.animating&&(e.stop(),e.render({duration:e.options.hover.animationDuration,lazy:!0})),e._bufferedRender=!1,e._bufferedRequest=null,e}},handleEvent:function(t){var e,n=this,i=n.options||{},a=i.hover;return n.lastActive=n.lastActive||[],"mouseout"===t.type?n.active=[]:n.active=n.getElementsAtEventForMode(t,a.mode,a),H.callback(i.onHover||i.hover.onHover,[t.native,n.active],n),"mouseup"!==t.type&&"click"!==t.type||i.onClick&&i.onClick.call(n,t.native,n.active),n.lastActive.length&&n.updateHoverStyle(n.lastActive,a.mode,!1),n.active.length&&a.mode&&n.updateHoverStyle(n.active,a.mode,!0),e=!H.arrayEquals(n.active,n.lastActive),n.lastActive=n.active,e}}),tn.instances={};var en=tn;tn.Controller=tn,tn.types={},H.configMerge=Ke,H.scaleMerge=Xe;function nn(){throw new Error("This method is not implemented: either no adapter can be found or an incomplete integration was provided.")}function an(t){this.options=t||{}}H.extend(an.prototype,{formats:nn,parse:nn,format:nn,add:nn,diff:nn,startOf:nn,endOf:nn,_create:function(t){return t}}),an.override=function(t){H.extend(an.prototype,t)};var rn={_date:an},on={formatters:{values:function(t){return H.isArray(t)?t:""+t},linear:function(t,e,n){var i=n.length>3?n[2]-n[1]:n[1]-n[0];Math.abs(i)>1&&t!==Math.floor(t)&&(i=t-Math.floor(t));var a=H.log10(Math.abs(i)),r="";if(0!==t)if(Math.max(Math.abs(n[0]),Math.abs(n[n.length-1]))<1e-4){var o=H.log10(Math.abs(t)),s=Math.floor(o)-Math.floor(a);s=Math.max(Math.min(s,20),0),r=t.toExponential(s)}else{var l=-1*Math.floor(a);l=Math.max(Math.min(l,20),0),r=t.toFixed(l)}else r="0";return r},logarithmic:function(t,e,n){var i=t/Math.pow(10,Math.floor(H.log10(t)));return 0===t?"0":1===i||2===i||5===i||0===e||e===n.length-1?t.toExponential():""}}},sn=H.isArray,ln=H.isNullOrUndef,un=H.valueOrDefault,dn=H.valueAtIndexOrDefault;function hn(t,e,n){var i,a=t.getTicks().length,r=Math.min(e,a-1),o=t.getPixelForTick(r),s=t._startPixel,l=t._endPixel;if(!(n&&(i=1===a?Math.max(o-s,l-o):0===e?(t.getPixelForTick(1)-o)/2:(o-t.getPixelForTick(r-1))/2,(o+=r<e?i:-i)<s-1e-6||o>l+1e-6)))return o}function cn(t,e,n,i){var a,r,o,s,l,u,d,h,c,f,g,p,m,v=n.length,b=[],x=[],y=[],_=0,k=0;for(a=0;a<v;++a){if(s=n[a].label,l=n[a].major?e.major:e.minor,t.font=u=l.string,d=i[u]=i[u]||{data:{},gc:[]},h=l.lineHeight,c=f=0,ln(s)||sn(s)){if(sn(s))for(r=0,o=s.length;r<o;++r)g=s[r],ln(g)||sn(g)||(c=H.measureText(t,d.data,d.gc,c,g),f+=h)}else c=H.measureText(t,d.data,d.gc,c,s),f=h;b.push(c),x.push(f),y.push(h/2),_=Math.max(c,_),k=Math.max(f,k)}function w(t){return{width:b[t]||0,height:x[t]||0,offset:y[t]||0}}return function(t,e){H.each(t,(function(t){var n,i=t.gc,a=i.length/2;if(a>e){for(n=0;n<a;++n)delete t.data[i[n]];i.splice(0,a)}}))}(i,v),p=b.indexOf(_),m=x.indexOf(k),{first:w(0),last:w(v-1),widest:w(p),highest:w(m)}}function fn(t){return t.drawTicks?t.tickMarkLength:0}function gn(t){var e,n;return t.display?(e=H.options._parseFont(t),n=H.options.toPadding(t.padding),e.lineHeight+n.height):0}function pn(t,e){return H.extend(H.options._parseFont({fontFamily:un(e.fontFamily,t.fontFamily),fontSize:un(e.fontSize,t.fontSize),fontStyle:un(e.fontStyle,t.fontStyle),lineHeight:un(e.lineHeight,t.lineHeight)}),{color:H.options.resolve([e.fontColor,t.fontColor,N.global.defaultFontColor])})}function mn(t){var e=pn(t,t.minor);return{minor:e,major:t.major.enabled?pn(t,t.major):e}}function vn(t){var e,n,i,a=[];for(n=0,i=t.length;n<i;++n)void 0!==(e=t[n])._index&&a.push(e);return a}function bn(t,e,n,i){var a,r,o,s,l=un(n,0),u=Math.min(un(i,t.length),t.length),d=0;for(e=Math.ceil(e),i&&(e=(a=i-n)/Math.floor(a/e)),s=l;s<0;)d++,s=Math.round(l+d*e);for(r=Math.max(l,0);r<u;r++)o=t[r],r===s?(o._index=r,d++,s=Math.round(l+d*e)):delete o.label}N._set("scale",{display:!0,position:"left",offset:!1,gridLines:{display:!0,color:"rgba(0,0,0,0.1)",lineWidth:1,drawBorder:!0,drawOnChartArea:!0,drawTicks:!0,tickMarkLength:10,zeroLineWidth:1,zeroLineColor:"rgba(0,0,0,0.25)",zeroLineBorderDash:[],zeroLineBorderDashOffset:0,offsetGridLines:!1,borderDash:[],borderDashOffset:0},scaleLabel:{display:!1,labelString:"",padding:{top:4,bottom:4}},ticks:{beginAtZero:!1,minRotation:0,maxRotation:50,mirror:!1,padding:0,reverse:!1,display:!0,autoSkip:!0,autoSkipPadding:0,labelOffset:0,callback:on.formatters.values,minor:{},major:{}}});var xn=K.extend({zeroLineIndex:0,getPadding:function(){return{left:this.paddingLeft||0,top:this.paddingTop||0,right:this.paddingRight||0,bottom:this.paddingBottom||0}},getTicks:function(){return this._ticks},_getLabels:function(){var t=this.chart.data;return this.options.labels||(this.isHorizontal()?t.xLabels:t.yLabels)||t.labels||[]},mergeTicksOptions:function(){},beforeUpdate:function(){H.callback(this.options.beforeUpdate,[this])},update:function(t,e,n){var i,a,r,o,s,l=this,u=l.options.ticks,d=u.sampleSize;if(l.beforeUpdate(),l.maxWidth=t,l.maxHeight=e,l.margins=H.extend({left:0,right:0,top:0,bottom:0},n),l._ticks=null,l.ticks=null,l._labelSizes=null,l._maxLabelLines=0,l.longestLabelWidth=0,l.longestTextCache=l.longestTextCache||{},l._gridLineItems=null,l._labelItems=null,l.beforeSetDimensions(),l.setDimensions(),l.afterSetDimensions(),l.beforeDataLimits(),l.determineDataLimits(),l.afterDataLimits(),l.beforeBuildTicks(),o=l.buildTicks()||[],(!(o=l.afterBuildTicks(o)||o)||!o.length)&&l.ticks)for(o=[],i=0,a=l.ticks.length;i<a;++i)o.push({value:l.ticks[i],major:!1});return l._ticks=o,s=d<o.length,r=l._convertTicksToLabels(s?function(t,e){for(var n=[],i=t.length/e,a=0,r=t.length;a<r;a+=i)n.push(t[Math.floor(a)]);return n}(o,d):o),l._configure(),l.beforeCalculateTickRotation(),l.calculateTickRotation(),l.afterCalculateTickRotation(),l.beforeFit(),l.fit(),l.afterFit(),l._ticksToDraw=u.display&&(u.autoSkip||"auto"===u.source)?l._autoSkip(o):o,s&&(r=l._convertTicksToLabels(l._ticksToDraw)),l.ticks=r,l.afterUpdate(),l.minSize},_configure:function(){var t,e,n=this,i=n.options.ticks.reverse;n.isHorizontal()?(t=n.left,e=n.right):(t=n.top,e=n.bottom,i=!i),n._startPixel=t,n._endPixel=e,n._reversePixels=i,n._length=e-t},afterUpdate:function(){H.callback(this.options.afterUpdate,[this])},beforeSetDimensions:function(){H.callback(this.options.beforeSetDimensions,[this])},setDimensions:function(){var t=this;t.isHorizontal()?(t.width=t.maxWidth,t.left=0,t.right=t.width):(t.height=t.maxHeight,t.top=0,t.bottom=t.height),t.paddingLeft=0,t.paddingTop=0,t.paddingRight=0,t.paddingBottom=0},afterSetDimensions:function(){H.callback(this.options.afterSetDimensions,[this])},beforeDataLimits:function(){H.callback(this.options.beforeDataLimits,[this])},determineDataLimits:H.noop,afterDataLimits:function(){H.callback(this.options.afterDataLimits,[this])},beforeBuildTicks:function(){H.callback(this.options.beforeBuildTicks,[this])},buildTicks:H.noop,afterBuildTicks:function(t){var e=this;return sn(t)&&t.length?H.callback(e.options.afterBuildTicks,[e,t]):(e.ticks=H.callback(e.options.afterBuildTicks,[e,e.ticks])||e.ticks,t)},beforeTickToLabelConversion:function(){H.callback(this.options.beforeTickToLabelConversion,[this])},convertTicksToLabels:function(){var t=this.options.ticks;this.ticks=this.ticks.map(t.userCallback||t.callback,this)},afterTickToLabelConversion:function(){H.callback(this.options.afterTickToLabelConversion,[this])},beforeCalculateTickRotation:function(){H.callback(this.options.beforeCalculateTickRotation,[this])},calculateTickRotation:function(){var t,e,n,i,a,r,o,s=this,l=s.options,u=l.ticks,d=s.getTicks().length,h=u.minRotation||0,c=u.maxRotation,f=h;!s._isVisible()||!u.display||h>=c||d<=1||!s.isHorizontal()?s.labelRotation=h:(e=(t=s._getLabelSizes()).widest.width,n=t.highest.height-t.highest.offset,i=Math.min(s.maxWidth,s.chart.width-e),e+6>(a=l.offset?s.maxWidth/d:i/(d-1))&&(a=i/(d-(l.offset?.5:1)),r=s.maxHeight-fn(l.gridLines)-u.padding-gn(l.scaleLabel),o=Math.sqrt(e*e+n*n),f=H.toDegrees(Math.min(Math.asin(Math.min((t.highest.height+6)/a,1)),Math.asin(Math.min(r/o,1))-Math.asin(n/o))),f=Math.max(h,Math.min(c,f))),s.labelRotation=f)},afterCalculateTickRotation:function(){H.callback(this.options.afterCalculateTickRotation,[this])},beforeFit:function(){H.callback(this.options.beforeFit,[this])},fit:function(){var t=this,e=t.minSize={width:0,height:0},n=t.chart,i=t.options,a=i.ticks,r=i.scaleLabel,o=i.gridLines,s=t._isVisible(),l="bottom"===i.position,u=t.isHorizontal();if(u?e.width=t.maxWidth:s&&(e.width=fn(o)+gn(r)),u?s&&(e.height=fn(o)+gn(r)):e.height=t.maxHeight,a.display&&s){var d=mn(a),h=t._getLabelSizes(),c=h.first,f=h.last,g=h.widest,p=h.highest,m=.4*d.minor.lineHeight,v=a.padding;if(u){var b=0!==t.labelRotation,x=H.toRadians(t.labelRotation),y=Math.cos(x),_=Math.sin(x),k=_*g.width+y*(p.height-(b?p.offset:0))+(b?0:m);e.height=Math.min(t.maxHeight,e.height+k+v);var w,M,S=t.getPixelForTick(0)-t.left,C=t.right-t.getPixelForTick(t.getTicks().length-1);b?(w=l?y*c.width+_*c.offset:_*(c.height-c.offset),M=l?_*(f.height-f.offset):y*f.width+_*f.offset):(w=c.width/2,M=f.width/2),t.paddingLeft=Math.max((w-S)*t.width/(t.width-S),0)+3,t.paddingRight=Math.max((M-C)*t.width/(t.width-C),0)+3}else{var P=a.mirror?0:g.width+v+m;e.width=Math.min(t.maxWidth,e.width+P),t.paddingTop=c.height/2,t.paddingBottom=f.height/2}}t.handleMargins(),u?(t.width=t._length=n.width-t.margins.left-t.margins.right,t.height=e.height):(t.width=e.width,t.height=t._length=n.height-t.margins.top-t.margins.bottom)},handleMargins:function(){var t=this;t.margins&&(t.margins.left=Math.max(t.paddingLeft,t.margins.left),t.margins.top=Math.max(t.paddingTop,t.margins.top),t.margins.right=Math.max(t.paddingRight,t.margins.right),t.margins.bottom=Math.max(t.paddingBottom,t.margins.bottom))},afterFit:function(){H.callback(this.options.afterFit,[this])},isHorizontal:function(){var t=this.options.position;return"top"===t||"bottom"===t},isFullWidth:function(){return this.options.fullWidth},getRightValue:function(t){if(ln(t))return NaN;if(("number"==typeof t||t instanceof Number)&&!isFinite(t))return NaN;if(t)if(this.isHorizontal()){if(void 0!==t.x)return this.getRightValue(t.x)}else if(void 0!==t.y)return this.getRightValue(t.y);return t},_convertTicksToLabels:function(t){var e,n,i,a=this;for(a.ticks=t.map((function(t){return t.value})),a.beforeTickToLabelConversion(),e=a.convertTicksToLabels(t)||a.ticks,a.afterTickToLabelConversion(),n=0,i=t.length;n<i;++n)t[n].label=e[n];return e},_getLabelSizes:function(){var t=this,e=t._labelSizes;return e||(t._labelSizes=e=cn(t.ctx,mn(t.options.ticks),t.getTicks(),t.longestTextCache),t.longestLabelWidth=e.widest.width),e},_parseValue:function(t){var e,n,i,a;return sn(t)?(e=+this.getRightValue(t[0]),n=+this.getRightValue(t[1]),i=Math.min(e,n),a=Math.max(e,n)):(e=void 0,n=t=+this.getRightValue(t),i=t,a=t),{min:i,max:a,start:e,end:n}},_getScaleLabel:function(t){var e=this._parseValue(t);return void 0!==e.start?"["+e.start+", "+e.end+"]":+this.getRightValue(t)},getLabelForIndex:H.noop,getPixelForValue:H.noop,getValueForPixel:H.noop,getPixelForTick:function(t){var e=this.options.offset,n=this._ticks.length,i=1/Math.max(n-(e?0:1),1);return t<0||t>n-1?null:this.getPixelForDecimal(t*i+(e?i/2:0))},getPixelForDecimal:function(t){return this._reversePixels&&(t=1-t),this._startPixel+t*this._length},getDecimalForPixel:function(t){var e=(t-this._startPixel)/this._length;return this._reversePixels?1-e:e},getBasePixel:function(){return this.getPixelForValue(this.getBaseValue())},getBaseValue:function(){var t=this.min,e=this.max;return this.beginAtZero?0:t<0&&e<0?e:t>0&&e>0?t:0},_autoSkip:function(t){var e,n,i,a,r=this.options.ticks,o=this._length,s=r.maxTicksLimit||o/this._tickSize()+1,l=r.major.enabled?function(t){var e,n,i=[];for(e=0,n=t.length;e<n;e++)t[e].major&&i.push(e);return i}(t):[],u=l.length,d=l[0],h=l[u-1];if(u>s)return function(t,e,n){var i,a,r=0,o=e[0];for(n=Math.ceil(n),i=0;i<t.length;i++)a=t[i],i===o?(a._index=i,o=e[++r*n]):delete a.label}(t,l,u/s),vn(t);if(i=function(t,e,n,i){var a,r,o,s,l=function(t){var e,n,i=t.length;if(i<2)return!1;for(n=t[0],e=1;e<i;++e)if(t[e]-t[e-1]!==n)return!1;return n}(t),u=(e.length-1)/i;if(!l)return Math.max(u,1);for(o=0,s=(a=H.math._factorize(l)).length-1;o<s;o++)if((r=a[o])>u)return r;return Math.max(u,1)}(l,t,0,s),u>0){for(e=0,n=u-1;e<n;e++)bn(t,i,l[e],l[e+1]);return a=u>1?(h-d)/(u-1):null,bn(t,i,H.isNullOrUndef(a)?0:d-a,d),bn(t,i,h,H.isNullOrUndef(a)?t.length:h+a),vn(t)}return bn(t,i),vn(t)},_tickSize:function(){var t=this.options.ticks,e=H.toRadians(this.labelRotation),n=Math.abs(Math.cos(e)),i=Math.abs(Math.sin(e)),a=this._getLabelSizes(),r=t.autoSkipPadding||0,o=a?a.widest.width+r:0,s=a?a.highest.height+r:0;return this.isHorizontal()?s*n>o*i?o/n:s/i:s*i<o*n?s/n:o/i},_isVisible:function(){var t,e,n,i=this.chart,a=this.options.display;if("auto"!==a)return!!a;for(t=0,e=i.data.datasets.length;t<e;++t)if(i.isDatasetVisible(t)&&((n=i.getDatasetMeta(t)).xAxisID===this.id||n.yAxisID===this.id))return!0;return!1},_computeGridLineItems:function(t){var e,n,i,a,r,o,s,l,u,d,h,c,f,g,p,m,v,b=this,x=b.chart,y=b.options,_=y.gridLines,k=y.position,w=_.offsetGridLines,M=b.isHorizontal(),S=b._ticksToDraw,C=S.length+(w?1:0),P=fn(_),A=[],D=_.drawBorder?dn(_.lineWidth,0,0):0,T=D/2,I=H._alignPixel,F=function(t){return I(x,t,D)};for("top"===k?(e=F(b.bottom),s=b.bottom-P,u=e-T,h=F(t.top)+T,f=t.bottom):"bottom"===k?(e=F(b.top),h=t.top,f=F(t.bottom)-T,s=e+T,u=b.top+P):"left"===k?(e=F(b.right),o=b.right-P,l=e-T,d=F(t.left)+T,c=t.right):(e=F(b.left),d=t.left,c=F(t.right)-T,o=e+T,l=b.left+P),n=0;n<C;++n)i=S[n]||{},ln(i.label)&&n<S.length||(n===b.zeroLineIndex&&y.offset===w?(g=_.zeroLineWidth,p=_.zeroLineColor,m=_.zeroLineBorderDash||[],v=_.zeroLineBorderDashOffset||0):(g=dn(_.lineWidth,n,1),p=dn(_.color,n,"rgba(0,0,0,0.1)"),m=_.borderDash||[],v=_.borderDashOffset||0),void 0!==(a=hn(b,i._index||n,w))&&(r=I(x,a,g),M?o=l=d=c=r:s=u=h=f=r,A.push({tx1:o,ty1:s,tx2:l,ty2:u,x1:d,y1:h,x2:c,y2:f,width:g,color:p,borderDash:m,borderDashOffset:v})));return A.ticksLength=C,A.borderValue=e,A},_computeLabelItems:function(){var t,e,n,i,a,r,o,s,l,u,d,h,c=this,f=c.options,g=f.ticks,p=f.position,m=g.mirror,v=c.isHorizontal(),b=c._ticksToDraw,x=mn(g),y=g.padding,_=fn(f.gridLines),k=-H.toRadians(c.labelRotation),w=[];for("top"===p?(r=c.bottom-_-y,o=k?"left":"center"):"bottom"===p?(r=c.top+_+y,o=k?"right":"center"):"left"===p?(a=c.right-(m?0:_)-y,o=m?"left":"right"):(a=c.left+(m?0:_)+y,o=m?"right":"left"),t=0,e=b.length;t<e;++t)i=(n=b[t]).label,ln(i)||(s=c.getPixelForTick(n._index||t)+g.labelOffset,u=(l=n.major?x.major:x.minor).lineHeight,d=sn(i)?i.length:1,v?(a=s,h="top"===p?((k?1:.5)-d)*u:(k?0:.5)*u):(r=s,h=(1-d)*u/2),w.push({x:a,y:r,rotation:k,label:i,font:l,textOffset:h,textAlign:o}));return w},_drawGrid:function(t){var e=this,n=e.options.gridLines;if(n.display){var i,a,r,o,s,l=e.ctx,u=e.chart,d=H._alignPixel,h=n.drawBorder?dn(n.lineWidth,0,0):0,c=e._gridLineItems||(e._gridLineItems=e._computeGridLineItems(t));for(r=0,o=c.length;r<o;++r)i=(s=c[r]).width,a=s.color,i&&a&&(l.save(),l.lineWidth=i,l.strokeStyle=a,l.setLineDash&&(l.setLineDash(s.borderDash),l.lineDashOffset=s.borderDashOffset),l.beginPath(),n.drawTicks&&(l.moveTo(s.tx1,s.ty1),l.lineTo(s.tx2,s.ty2)),n.drawOnChartArea&&(l.moveTo(s.x1,s.y1),l.lineTo(s.x2,s.y2)),l.stroke(),l.restore());if(h){var f,g,p,m,v=h,b=dn(n.lineWidth,c.ticksLength-1,1),x=c.borderValue;e.isHorizontal()?(f=d(u,e.left,v)-v/2,g=d(u,e.right,b)+b/2,p=m=x):(p=d(u,e.top,v)-v/2,m=d(u,e.bottom,b)+b/2,f=g=x),l.lineWidth=h,l.strokeStyle=dn(n.color,0),l.beginPath(),l.moveTo(f,p),l.lineTo(g,m),l.stroke()}}},_drawLabels:function(){var t=this;if(t.options.ticks.display){var e,n,i,a,r,o,s,l,u=t.ctx,d=t._labelItems||(t._labelItems=t._computeLabelItems());for(e=0,i=d.length;e<i;++e){if(o=(r=d[e]).font,u.save(),u.translate(r.x,r.y),u.rotate(r.rotation),u.font=o.string,u.fillStyle=o.color,u.textBaseline="middle",u.textAlign=r.textAlign,s=r.label,l=r.textOffset,sn(s))for(n=0,a=s.length;n<a;++n)u.fillText(""+s[n],0,l),l+=o.lineHeight;else u.fillText(s,0,l);u.restore()}}},_drawTitle:function(){var t=this,e=t.ctx,n=t.options,i=n.scaleLabel;if(i.display){var a,r,o=un(i.fontColor,N.global.defaultFontColor),s=H.options._parseFont(i),l=H.options.toPadding(i.padding),u=s.lineHeight/2,d=n.position,h=0;if(t.isHorizontal())a=t.left+t.width/2,r="bottom"===d?t.bottom-u-l.bottom:t.top+u+l.top;else{var c="left"===d;a=c?t.left+u+l.top:t.right-u-l.top,r=t.top+t.height/2,h=c?-.5*Math.PI:.5*Math.PI}e.save(),e.translate(a,r),e.rotate(h),e.textAlign="center",e.textBaseline="middle",e.fillStyle=o,e.font=s.string,e.fillText(i.labelString,0,0),e.restore()}},draw:function(t){this._isVisible()&&(this._drawGrid(t),this._drawTitle(),this._drawLabels())},_layers:function(){var t=this,e=t.options,n=e.ticks&&e.ticks.z||0,i=e.gridLines&&e.gridLines.z||0;return t._isVisible()&&n!==i&&t.draw===t._draw?[{z:i,draw:function(){t._drawGrid.apply(t,arguments),t._drawTitle.apply(t,arguments)}},{z:n,draw:function(){t._drawLabels.apply(t,arguments)}}]:[{z:n,draw:function(){t.draw.apply(t,arguments)}}]},_getMatchingVisibleMetas:function(t){var e=this,n=e.isHorizontal();return e.chart._getSortedVisibleDatasetMetas().filter((function(i){return(!t||i.type===t)&&(n?i.xAxisID===e.id:i.yAxisID===e.id)}))}});xn.prototype._draw=xn.prototype.draw;var yn=xn,_n=H.isNullOrUndef,kn=yn.extend({determineDataLimits:function(){var t,e=this,n=e._getLabels(),i=e.options.ticks,a=i.min,r=i.max,o=0,s=n.length-1;void 0!==a&&(t=n.indexOf(a))>=0&&(o=t),void 0!==r&&(t=n.indexOf(r))>=0&&(s=t),e.minIndex=o,e.maxIndex=s,e.min=n[o],e.max=n[s]},buildTicks:function(){var t=this._getLabels(),e=this.minIndex,n=this.maxIndex;this.ticks=0===e&&n===t.length-1?t:t.slice(e,n+1)},getLabelForIndex:function(t,e){var n=this.chart;return n.getDatasetMeta(e).controller._getValueScaleId()===this.id?this.getRightValue(n.data.datasets[e].data[t]):this._getLabels()[t]},_configure:function(){var t=this,e=t.options.offset,n=t.ticks;yn.prototype._configure.call(t),t.isHorizontal()||(t._reversePixels=!t._reversePixels),n&&(t._startValue=t.minIndex-(e?.5:0),t._valueRange=Math.max(n.length-(e?0:1),1))},getPixelForValue:function(t,e,n){var i,a,r,o=this;return _n(e)||_n(n)||(t=o.chart.data.datasets[n].data[e]),_n(t)||(i=o.isHorizontal()?t.x:t.y),(void 0!==i||void 0!==t&&isNaN(e))&&(a=o._getLabels(),t=H.valueOrDefault(i,t),e=-1!==(r=a.indexOf(t))?r:e,isNaN(e)&&(e=t)),o.getPixelForDecimal((e-o._startValue)/o._valueRange)},getPixelForTick:function(t){var e=this.ticks;return t<0||t>e.length-1?null:this.getPixelForValue(e[t],t+this.minIndex)},getValueForPixel:function(t){var e=Math.round(this._startValue+this.getDecimalForPixel(t)*this._valueRange);return Math.min(Math.max(e,0),this.ticks.length-1)},getBasePixel:function(){return this.bottom}}),wn={position:"bottom"};kn._defaults=wn;var Mn=H.noop,Sn=H.isNullOrUndef;var Cn=yn.extend({getRightValue:function(t){return"string"==typeof t?+t:yn.prototype.getRightValue.call(this,t)},handleTickRangeOptions:function(){var t=this,e=t.options.ticks;if(e.beginAtZero){var n=H.sign(t.min),i=H.sign(t.max);n<0&&i<0?t.max=0:n>0&&i>0&&(t.min=0)}var a=void 0!==e.min||void 0!==e.suggestedMin,r=void 0!==e.max||void 0!==e.suggestedMax;void 0!==e.min?t.min=e.min:void 0!==e.suggestedMin&&(null===t.min?t.min=e.suggestedMin:t.min=Math.min(t.min,e.suggestedMin)),void 0!==e.max?t.max=e.max:void 0!==e.suggestedMax&&(null===t.max?t.max=e.suggestedMax:t.max=Math.max(t.max,e.suggestedMax)),a!==r&&t.min>=t.max&&(a?t.max=t.min+1:t.min=t.max-1),t.min===t.max&&(t.max++,e.beginAtZero||t.min--)},getTickLimit:function(){var t,e=this.options.ticks,n=e.stepSize,i=e.maxTicksLimit;return n?t=Math.ceil(this.max/n)-Math.floor(this.min/n)+1:(t=this._computeTickLimit(),i=i||11),i&&(t=Math.min(i,t)),t},_computeTickLimit:function(){return Number.POSITIVE_INFINITY},handleDirectionalChanges:Mn,buildTicks:function(){var t=this,e=t.options.ticks,n=t.getTickLimit(),i={maxTicks:n=Math.max(2,n),min:e.min,max:e.max,precision:e.precision,stepSize:H.valueOrDefault(e.fixedStepSize,e.stepSize)},a=t.ticks=function(t,e){var n,i,a,r,o=[],s=t.stepSize,l=s||1,u=t.maxTicks-1,d=t.min,h=t.max,c=t.precision,f=e.min,g=e.max,p=H.niceNum((g-f)/u/l)*l;if(p<1e-14&&Sn(d)&&Sn(h))return[f,g];(r=Math.ceil(g/p)-Math.floor(f/p))>u&&(p=H.niceNum(r*p/u/l)*l),s||Sn(c)?n=Math.pow(10,H._decimalPlaces(p)):(n=Math.pow(10,c),p=Math.ceil(p*n)/n),i=Math.floor(f/p)*p,a=Math.ceil(g/p)*p,s&&(!Sn(d)&&H.almostWhole(d/p,p/1e3)&&(i=d),!Sn(h)&&H.almostWhole(h/p,p/1e3)&&(a=h)),r=(a-i)/p,r=H.almostEquals(r,Math.round(r),p/1e3)?Math.round(r):Math.ceil(r),i=Math.round(i*n)/n,a=Math.round(a*n)/n,o.push(Sn(d)?i:d);for(var m=1;m<r;++m)o.push(Math.round((i+m*p)*n)/n);return o.push(Sn(h)?a:h),o}(i,t);t.handleDirectionalChanges(),t.max=H.max(a),t.min=H.min(a),e.reverse?(a.reverse(),t.start=t.max,t.end=t.min):(t.start=t.min,t.end=t.max)},convertTicksToLabels:function(){var t=this;t.ticksAsNumbers=t.ticks.slice(),t.zeroLineIndex=t.ticks.indexOf(0),yn.prototype.convertTicksToLabels.call(t)},_configure:function(){var t,e=this,n=e.getTicks(),i=e.min,a=e.max;yn.prototype._configure.call(e),e.options.offset&&n.length&&(i-=t=(a-i)/Math.max(n.length-1,1)/2,a+=t),e._startValue=i,e._endValue=a,e._valueRange=a-i}}),Pn={position:"left",ticks:{callback:on.formatters.linear}};function An(t,e,n,i){var a,r,o=t.options,s=function(t,e,n){var i=[n.type,void 0===e&&void 0===n.stack?n.index:"",n.stack].join(".");return void 0===t[i]&&(t[i]={pos:[],neg:[]}),t[i]}(e,o.stacked,n),l=s.pos,u=s.neg,d=i.length;for(a=0;a<d;++a)r=t._parseValue(i[a]),isNaN(r.min)||isNaN(r.max)||n.data[a].hidden||(l[a]=l[a]||0,u[a]=u[a]||0,o.relativePoints?l[a]=100:r.min<0||r.max<0?u[a]+=r.min:l[a]+=r.max)}function Dn(t,e,n){var i,a,r=n.length;for(i=0;i<r;++i)a=t._parseValue(n[i]),isNaN(a.min)||isNaN(a.max)||e.data[i].hidden||(t.min=Math.min(t.min,a.min),t.max=Math.max(t.max,a.max))}var Tn=Cn.extend({determineDataLimits:function(){var t,e,n,i,a=this,r=a.options,o=a.chart.data.datasets,s=a._getMatchingVisibleMetas(),l=r.stacked,u={},d=s.length;if(a.min=Number.POSITIVE_INFINITY,a.max=Number.NEGATIVE_INFINITY,void 0===l)for(t=0;!l&&t<d;++t)l=void 0!==(e=s[t]).stack;for(t=0;t<d;++t)n=o[(e=s[t]).index].data,l?An(a,u,e,n):Dn(a,e,n);H.each(u,(function(t){i=t.pos.concat(t.neg),a.min=Math.min(a.min,H.min(i)),a.max=Math.max(a.max,H.max(i))})),a.min=H.isFinite(a.min)&&!isNaN(a.min)?a.min:0,a.max=H.isFinite(a.max)&&!isNaN(a.max)?a.max:1,a.handleTickRangeOptions()},_computeTickLimit:function(){var t;return this.isHorizontal()?Math.ceil(this.width/40):(t=H.options._parseFont(this.options.ticks),Math.ceil(this.height/t.lineHeight))},handleDirectionalChanges:function(){this.isHorizontal()||this.ticks.reverse()},getLabelForIndex:function(t,e){return this._getScaleLabel(this.chart.data.datasets[e].data[t])},getPixelForValue:function(t){return this.getPixelForDecimal((+this.getRightValue(t)-this._startValue)/this._valueRange)},getValueForPixel:function(t){return this._startValue+this.getDecimalForPixel(t)*this._valueRange},getPixelForTick:function(t){var e=this.ticksAsNumbers;return t<0||t>e.length-1?null:this.getPixelForValue(e[t])}}),In=Pn;Tn._defaults=In;var Fn=H.valueOrDefault,On=H.math.log10;var Ln={position:"left",ticks:{callback:on.formatters.logarithmic}};function Rn(t,e){return H.isFinite(t)&&t>=0?t:e}var zn=yn.extend({determineDataLimits:function(){var t,e,n,i,a,r,o=this,s=o.options,l=o.chart,u=l.data.datasets,d=o.isHorizontal();function h(t){return d?t.xAxisID===o.id:t.yAxisID===o.id}o.min=Number.POSITIVE_INFINITY,o.max=Number.NEGATIVE_INFINITY,o.minNotZero=Number.POSITIVE_INFINITY;var c=s.stacked;if(void 0===c)for(t=0;t<u.length;t++)if(e=l.getDatasetMeta(t),l.isDatasetVisible(t)&&h(e)&&void 0!==e.stack){c=!0;break}if(s.stacked||c){var f={};for(t=0;t<u.length;t++){var g=[(e=l.getDatasetMeta(t)).type,void 0===s.stacked&&void 0===e.stack?t:"",e.stack].join(".");if(l.isDatasetVisible(t)&&h(e))for(void 0===f[g]&&(f[g]=[]),a=0,r=(i=u[t].data).length;a<r;a++){var p=f[g];n=o._parseValue(i[a]),isNaN(n.min)||isNaN(n.max)||e.data[a].hidden||n.min<0||n.max<0||(p[a]=p[a]||0,p[a]+=n.max)}}H.each(f,(function(t){if(t.length>0){var e=H.min(t),n=H.max(t);o.min=Math.min(o.min,e),o.max=Math.max(o.max,n)}}))}else for(t=0;t<u.length;t++)if(e=l.getDatasetMeta(t),l.isDatasetVisible(t)&&h(e))for(a=0,r=(i=u[t].data).length;a<r;a++)n=o._parseValue(i[a]),isNaN(n.min)||isNaN(n.max)||e.data[a].hidden||n.min<0||n.max<0||(o.min=Math.min(n.min,o.min),o.max=Math.max(n.max,o.max),0!==n.min&&(o.minNotZero=Math.min(n.min,o.minNotZero)));o.min=H.isFinite(o.min)?o.min:null,o.max=H.isFinite(o.max)?o.max:null,o.minNotZero=H.isFinite(o.minNotZero)?o.minNotZero:null,this.handleTickRangeOptions()},handleTickRangeOptions:function(){var t=this,e=t.options.ticks;t.min=Rn(e.min,t.min),t.max=Rn(e.max,t.max),t.min===t.max&&(0!==t.min&&null!==t.min?(t.min=Math.pow(10,Math.floor(On(t.min))-1),t.max=Math.pow(10,Math.floor(On(t.max))+1)):(t.min=1,t.max=10)),null===t.min&&(t.min=Math.pow(10,Math.floor(On(t.max))-1)),null===t.max&&(t.max=0!==t.min?Math.pow(10,Math.floor(On(t.min))+1):10),null===t.minNotZero&&(t.min>0?t.minNotZero=t.min:t.max<1?t.minNotZero=Math.pow(10,Math.floor(On(t.max))):t.minNotZero=1)},buildTicks:function(){var t=this,e=t.options.ticks,n=!t.isHorizontal(),i={min:Rn(e.min),max:Rn(e.max)},a=t.ticks=function(t,e){var n,i,a=[],r=Fn(t.min,Math.pow(10,Math.floor(On(e.min)))),o=Math.floor(On(e.max)),s=Math.ceil(e.max/Math.pow(10,o));0===r?(n=Math.floor(On(e.minNotZero)),i=Math.floor(e.minNotZero/Math.pow(10,n)),a.push(r),r=i*Math.pow(10,n)):(n=Math.floor(On(r)),i=Math.floor(r/Math.pow(10,n)));var l=n<0?Math.pow(10,Math.abs(n)):1;do{a.push(r),10===++i&&(i=1,l=++n>=0?1:l),r=Math.round(i*Math.pow(10,n)*l)/l}while(n<o||n===o&&i<s);var u=Fn(t.max,r);return a.push(u),a}(i,t);t.max=H.max(a),t.min=H.min(a),e.reverse?(n=!n,t.start=t.max,t.end=t.min):(t.start=t.min,t.end=t.max),n&&a.reverse()},convertTicksToLabels:function(){this.tickValues=this.ticks.slice(),yn.prototype.convertTicksToLabels.call(this)},getLabelForIndex:function(t,e){return this._getScaleLabel(this.chart.data.datasets[e].data[t])},getPixelForTick:function(t){var e=this.tickValues;return t<0||t>e.length-1?null:this.getPixelForValue(e[t])},_getFirstTickValue:function(t){var e=Math.floor(On(t));return Math.floor(t/Math.pow(10,e))*Math.pow(10,e)},_configure:function(){var t=this,e=t.min,n=0;yn.prototype._configure.call(t),0===e&&(e=t._getFirstTickValue(t.minNotZero),n=Fn(t.options.ticks.fontSize,N.global.defaultFontSize)/t._length),t._startValue=On(e),t._valueOffset=n,t._valueRange=(On(t.max)-On(e))/(1-n)},getPixelForValue:function(t){var e=this,n=0;return(t=+e.getRightValue(t))>e.min&&t>0&&(n=(On(t)-e._startValue)/e._valueRange+e._valueOffset),e.getPixelForDecimal(n)},getValueForPixel:function(t){var e=this,n=e.getDecimalForPixel(t);return 0===n&&0===e.min?0:Math.pow(10,e._startValue+(n-e._valueOffset)*e._valueRange)}}),Nn=Ln;zn._defaults=Nn;var Bn=H.valueOrDefault,En=H.valueAtIndexOrDefault,Wn=H.options.resolve,Vn={display:!0,animate:!0,position:"chartArea",angleLines:{display:!0,color:"rgba(0,0,0,0.1)",lineWidth:1,borderDash:[],borderDashOffset:0},gridLines:{circular:!1},ticks:{showLabelBackdrop:!0,backdropColor:"rgba(255,255,255,0.75)",backdropPaddingY:2,backdropPaddingX:2,callback:on.formatters.linear},pointLabels:{display:!0,fontSize:10,callback:function(t){return t}}};function Hn(t){var e=t.ticks;return e.display&&t.display?Bn(e.fontSize,N.global.defaultFontSize)+2*e.backdropPaddingY:0}function jn(t,e,n,i,a){return t===i||t===a?{start:e-n/2,end:e+n/2}:t<i||t>a?{start:e-n,end:e}:{start:e,end:e+n}}function qn(t){return 0===t||180===t?"center":t<180?"left":"right"}function Un(t,e,n,i){var a,r,o=n.y+i/2;if(H.isArray(e))for(a=0,r=e.length;a<r;++a)t.fillText(e[a],n.x,o),o+=i;else t.fillText(e,n.x,o)}function Yn(t,e,n){90===t||270===t?n.y-=e.h/2:(t>270||t<90)&&(n.y-=e.h)}function Gn(t){return H.isNumber(t)?t:0}var 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e||0===e?e:""}))},getLabelForIndex:function(t,e){return+this.getRightValue(this.chart.data.datasets[e].data[t])},fit:function(){var t=this.options;t.display&&t.pointLabels.display?function(t){var e,n,i,a=H.options._parseFont(t.options.pointLabels),r={l:0,r:t.width,t:0,b:t.height-t.paddingTop},o={};t.ctx.font=a.string,t._pointLabelSizes=[];var s,l,u,d=t.chart.data.labels.length;for(e=0;e<d;e++){i=t.getPointPosition(e,t.drawingArea+5),s=t.ctx,l=a.lineHeight,u=t.pointLabels[e],n=H.isArray(u)?{w:H.longestText(s,s.font,u),h:u.length*l}:{w:s.measureText(u).width,h:l},t._pointLabelSizes[e]=n;var h=t.getIndexAngle(e),c=H.toDegrees(h)%360,f=jn(c,i.x,n.w,0,180),g=jn(c,i.y,n.h,90,270);f.start<r.l&&(r.l=f.start,o.l=h),f.end>r.r&&(r.r=f.end,o.r=h),g.start<r.t&&(r.t=g.start,o.t=h),g.end>r.b&&(r.b=g.end,o.b=h)}t.setReductions(t.drawingArea,r,o)}(this):this.setCenterPoint(0,0,0,0)},setReductions:function(t,e,n){var i=this,a=e.l/Math.sin(n.l),r=Math.max(e.r-i.width,0)/Math.sin(n.r),o=-e.t/Math.cos(n.t),s=-Math.max(e.b-(i.height-i.paddingTop),0)/Math.cos(n.b);a=Gn(a),r=Gn(r),o=Gn(o),s=Gn(s),i.drawingArea=Math.min(Math.floor(t-(a+r)/2),Math.floor(t-(o+s)/2)),i.setCenterPoint(a,r,o,s)},setCenterPoint:function(t,e,n,i){var a=this,r=a.width-e-a.drawingArea,o=t+a.drawingArea,s=n+a.drawingArea,l=a.height-a.paddingTop-i-a.drawingArea;a.xCenter=Math.floor((o+r)/2+a.left),a.yCenter=Math.floor((s+l)/2+a.top+a.paddingTop)},getIndexAngle:function(t){var e=this.chart,n=(t*(360/e.data.labels.length)+((e.options||{}).startAngle||0))%360;return(n<0?n+360:n)*Math.PI*2/360},getDistanceFromCenterForValue:function(t){var e=this;if(H.isNullOrUndef(t))return NaN;var n=e.drawingArea/(e.max-e.min);return e.options.ticks.reverse?(e.max-t)*n:(t-e.min)*n},getPointPosition:function(t,e){var n=this.getIndexAngle(t)-Math.PI/2;return{x:Math.cos(n)*e+this.xCenter,y:Math.sin(n)*e+this.yCenter}},getPointPositionForValue:function(t,e){return this.getPointPosition(t,this.getDistanceFromCenterForValue(e))},getBasePosition:function(t){var e=this.min,n=this.max;return this.getPointPositionForValue(t||0,this.beginAtZero?0:e<0&&n<0?n:e>0&&n>0?e:0)},_drawGrid:function(){var t,e,n,i=this,a=i.ctx,r=i.options,o=r.gridLines,s=r.angleLines,l=Bn(s.lineWidth,o.lineWidth),u=Bn(s.color,o.color);if(r.pointLabels.display&&function(t){var e=t.ctx,n=t.options,i=n.pointLabels,a=Hn(n),r=t.getDistanceFromCenterForValue(n.ticks.reverse?t.min:t.max),o=H.options._parseFont(i);e.save(),e.font=o.string,e.textBaseline="middle";for(var s=t.chart.data.labels.length-1;s>=0;s--){var l=0===s?a/2:0,u=t.getPointPosition(s,r+l+5),d=En(i.fontColor,s,N.global.defaultFontColor);e.fillStyle=d;var h=t.getIndexAngle(s),c=H.toDegrees(h);e.textAlign=qn(c),Yn(c,t._pointLabelSizes[s],u),Un(e,t.pointLabels[s],u,o.lineHeight)}e.restore()}(i),o.display&&H.each(i.ticks,(function(t,n){0!==n&&(e=i.getDistanceFromCenterForValue(i.ticksAsNumbers[n]),function(t,e,n,i){var a,r=t.ctx,o=e.circular,s=t.chart.data.labels.length,l=En(e.color,i-1),u=En(e.lineWidth,i-1);if((o||s)&&l&&u){if(r.save(),r.strokeStyle=l,r.lineWidth=u,r.setLineDash&&(r.setLineDash(e.borderDash||[]),r.lineDashOffset=e.borderDashOffset||0),r.beginPath(),o)r.arc(t.xCenter,t.yCenter,n,0,2*Math.PI);else{a=t.getPointPosition(0,n),r.moveTo(a.x,a.y);for(var d=1;d<s;d++)a=t.getPointPosition(d,n),r.lineTo(a.x,a.y)}r.closePath(),r.stroke(),r.restore()}}(i,o,e,n))})),s.display&&l&&u){for(a.save(),a.lineWidth=l,a.strokeStyle=u,a.setLineDash&&(a.setLineDash(Wn([s.borderDash,o.borderDash,[]])),a.lineDashOffset=Wn([s.borderDashOffset,o.borderDashOffset,0])),t=i.chart.data.labels.length-1;t>=0;t--)e=i.getDistanceFromCenterForValue(r.ticks.reverse?i.min:i.max),n=i.getPointPosition(t,e),a.beginPath(),a.moveTo(i.xCenter,i.yCenter),a.lineTo(n.x,n.y),a.stroke();a.restore()}},_drawLabels:function(){var t=this,e=t.ctx,n=t.options.ticks;if(n.display){var i,a,r=t.getIndexAngle(0),o=H.options._parseFont(n),s=Bn(n.fontColor,N.global.defaultFontColor);e.save(),e.font=o.string,e.translate(t.xCenter,t.yCenter),e.rotate(r),e.textAlign="center",e.textBaseline="middle",H.each(t.ticks,(function(r,l){(0!==l||n.reverse)&&(i=t.getDistanceFromCenterForValue(t.ticksAsNumbers[l]),n.showLabelBackdrop&&(a=e.measureText(r).width,e.fillStyle=n.backdropColor,e.fillRect(-a/2-n.backdropPaddingX,-i-o.size/2-n.backdropPaddingY,a+2*n.backdropPaddingX,o.size+2*n.backdropPaddingY)),e.fillStyle=s,e.fillText(r,0,-i))})),e.restore()}},_drawTitle:H.noop}),Kn=Vn;Xn._defaults=Kn;var Zn=H._deprecated,$n=H.options.resolve,Jn=H.valueOrDefault,Qn=Number.MIN_SAFE_INTEGER||-9007199254740991,ti=Number.MAX_SAFE_INTEGER||9007199254740991,ei={millisecond:{common:!0,size:1,steps:1e3},second:{common:!0,size:1e3,steps:60},minute:{common:!0,size:6e4,steps:60},hour:{common:!0,size:36e5,steps:24},day:{common:!0,size:864e5,steps:30},week:{common:!1,size:6048e5,steps:4},month:{common:!0,size:2628e6,steps:12},quarter:{common:!1,size:7884e6,steps:4},year:{common:!0,size:3154e7}},ni=Object.keys(ei);function ii(t,e){return t-e}function ai(t){return H.valueOrDefault(t.time.min,t.ticks.min)}function ri(t){return H.valueOrDefault(t.time.max,t.ticks.max)}function oi(t,e,n,i){var a=function(t,e,n){for(var i,a,r,o=0,s=t.length-1;o>=0&&o<=s;){if(a=t[(i=o+s>>1)-1]||null,r=t[i],!a)return{lo:null,hi:r};if(r[e]<n)o=i+1;else{if(!(a[e]>n))return{lo:a,hi:r};s=i-1}}return{lo:r,hi:null}}(t,e,n),r=a.lo?a.hi?a.lo:t[t.length-2]:t[0],o=a.lo?a.hi?a.hi:t[t.length-1]:t[1],s=o[e]-r[e],l=s?(n-r[e])/s:0,u=(o[i]-r[i])*l;return r[i]+u}function si(t,e){var n=t._adapter,i=t.options.time,a=i.parser,r=a||i.format,o=e;return"function"==typeof a&&(o=a(o)),H.isFinite(o)||(o="string"==typeof r?n.parse(o,r):n.parse(o)),null!==o?+o:(a||"function"!=typeof r||(o=r(e),H.isFinite(o)||(o=n.parse(o))),o)}function li(t,e){if(H.isNullOrUndef(e))return null;var n=t.options.time,i=si(t,t.getRightValue(e));return null===i?i:(n.round&&(i=+t._adapter.startOf(i,n.round)),i)}function ui(t,e,n,i){var a,r,o,s=ni.length;for(a=ni.indexOf(t);a<s-1;++a)if(o=(r=ei[ni[a]]).steps?r.steps:ti,r.common&&Math.ceil((n-e)/(o*r.size))<=i)return ni[a];return ni[s-1]}function di(t,e,n){var i,a,r=[],o={},s=e.length;for(i=0;i<s;++i)o[a=e[i]]=i,r.push({value:a,major:!1});return 0!==s&&n?function(t,e,n,i){var a,r,o=t._adapter,s=+o.startOf(e[0].value,i),l=e[e.length-1].value;for(a=s;a<=l;a=+o.add(a,1,i))(r=n[a])>=0&&(e[r].major=!0);return e}(t,r,o,n):r}var hi=yn.extend({initialize:function(){this.mergeTicksOptions(),yn.prototype.initialize.call(this)},update:function(){var t=this,e=t.options,n=e.time||(e.time={}),i=t._adapter=new rn._date(e.adapters.date);return Zn("time scale",n.format,"time.format","time.parser"),Zn("time scale",n.min,"time.min","ticks.min"),Zn("time scale",n.max,"time.max","ticks.max"),H.mergeIf(n.displayFormats,i.formats()),yn.prototype.update.apply(t,arguments)},getRightValue:function(t){return t&&void 0!==t.t&&(t=t.t),yn.prototype.getRightValue.call(this,t)},determineDataLimits:function(){var t,e,n,i,a,r,o,s=this,l=s.chart,u=s._adapter,d=s.options,h=d.time.unit||"day",c=ti,f=Qn,g=[],p=[],m=[],v=s._getLabels();for(t=0,n=v.length;t<n;++t)m.push(li(s,v[t]));for(t=0,n=(l.data.datasets||[]).length;t<n;++t)if(l.isDatasetVisible(t))if(a=l.data.datasets[t].data,H.isObject(a[0]))for(p[t]=[],e=0,i=a.length;e<i;++e)r=li(s,a[e]),g.push(r),p[t][e]=r;else p[t]=m.slice(0),o||(g=g.concat(m),o=!0);else p[t]=[];m.length&&(c=Math.min(c,m[0]),f=Math.max(f,m[m.length-1])),g.length&&(g=n>1?function(t){var e,n,i,a={},r=[];for(e=0,n=t.length;e<n;++e)a[i=t[e]]||(a[i]=!0,r.push(i));return r}(g).sort(ii):g.sort(ii),c=Math.min(c,g[0]),f=Math.max(f,g[g.length-1])),c=li(s,ai(d))||c,f=li(s,ri(d))||f,c=c===ti?+u.startOf(Date.now(),h):c,f=f===Qn?+u.endOf(Date.now(),h)+1:f,s.min=Math.min(c,f),s.max=Math.max(c+1,f),s._table=[],s._timestamps={data:g,datasets:p,labels:m}},buildTicks:function(){var t,e,n,i=this,a=i.min,r=i.max,o=i.options,s=o.ticks,l=o.time,u=i._timestamps,d=[],h=i.getLabelCapacity(a),c=s.source,f=o.distribution;for(u="data"===c||"auto"===c&&"series"===f?u.data:"labels"===c?u.labels:function(t,e,n,i){var a,r=t._adapter,o=t.options,s=o.time,l=s.unit||ui(s.minUnit,e,n,i),u=$n([s.stepSize,s.unitStepSize,1]),d="week"===l&&s.isoWeekday,h=e,c=[];if(d&&(h=+r.startOf(h,"isoWeek",d)),h=+r.startOf(h,d?"day":l),r.diff(n,e,l)>1e5*u)throw e+" and "+n+" are too far apart with stepSize of "+u+" "+l;for(a=h;a<n;a=+r.add(a,u,l))c.push(a);return a!==n&&"ticks"!==o.bounds||c.push(a),c}(i,a,r,h),"ticks"===o.bounds&&u.length&&(a=u[0],r=u[u.length-1]),a=li(i,ai(o))||a,r=li(i,ri(o))||r,t=0,e=u.length;t<e;++t)(n=u[t])>=a&&n<=r&&d.push(n);return i.min=a,i.max=r,i._unit=l.unit||(s.autoSkip?ui(l.minUnit,i.min,i.max,h):function(t,e,n,i,a){var r,o;for(r=ni.length-1;r>=ni.indexOf(n);r--)if(o=ni[r],ei[o].common&&t._adapter.diff(a,i,o)>=e-1)return o;return 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this.getPixelForOffset(i)},getPixelForTick:function(t){var e=this.getTicks();return t>=0&&t<e.length?this.getPixelForOffset(e[t].value):null},getValueForPixel:function(t){var e=this._offsets,n=this.getDecimalForPixel(t)/e.factor-e.end,i=oi(this._table,"pos",n,"time");return this._adapter._create(i)},_getLabelSize:function(t){var e=this.options.ticks,n=this.ctx.measureText(t).width,i=H.toRadians(this.isHorizontal()?e.maxRotation:e.minRotation),a=Math.cos(i),r=Math.sin(i),o=Jn(e.fontSize,N.global.defaultFontSize);return{w:n*a+o*r,h:n*r+o*a}},getLabelWidth:function(t){return this._getLabelSize(t).w},getLabelCapacity:function(t){var e=this,n=e.options.time,i=n.displayFormats,a=i[n.unit]||i.millisecond,r=e.tickFormatFunction(t,0,di(e,[t],e._majorUnit),a),o=e._getLabelSize(r),s=Math.floor(e.isHorizontal()?e.width/o.w:e.height/o.h);return 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n=e.datasetIndex,i=this.chart,a=i.getDatasetMeta(n);a.hidden=null===a.hidden?!i.data.datasets[n].hidden:null,i.update()},onHover:null,onLeave:null,labels:{boxWidth:40,padding:10,generateLabels:function(t){var e=t.data.datasets,n=t.options.legend||{},i=n.labels&&n.labels.usePointStyle;return t._getSortedDatasetMetas().map((function(n){var a=n.controller.getStyle(i?0:void 0);return{text:e[n.index].label,fillStyle:a.backgroundColor,hidden:!t.isDatasetVisible(n.index),lineCap:a.borderCapStyle,lineDash:a.borderDash,lineDashOffset:a.borderDashOffset,lineJoin:a.borderJoinStyle,lineWidth:a.borderWidth,strokeStyle:a.borderColor,pointStyle:a.pointStyle,rotation:a.rotation,datasetIndex:n.index}}),this)}}},legendCallback:function(t){var 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t=this;t.isHorizontal()?(t.width=t.maxWidth,t.left=0,t.right=t.width):(t.height=t.maxHeight,t.top=0,t.bottom=t.height),t.paddingLeft=0,t.paddingTop=0,t.paddingRight=0,t.paddingBottom=0,t.minSize={width:0,height:0}},afterSetDimensions:Si,beforeBuildLabels:Si,buildLabels:function(){var t=this,e=t.options.labels||{},n=H.callback(e.generateLabels,[t.chart],t)||[];e.filter&&(n=n.filter((function(n){return e.filter(n,t.chart.data)}))),t.options.reverse&&n.reverse(),t.legendItems=n},afterBuildLabels:Si,beforeFit:Si,fit:function(){var t=this,e=t.options,n=e.labels,i=e.display,a=t.ctx,r=H.options._parseFont(n),o=r.size,s=t.legendHitBoxes=[],l=t.minSize,u=t.isHorizontal();if(u?(l.width=t.maxWidth,l.height=i?10:0):(l.width=i?10:0,l.height=t.maxHeight),i){if(a.font=r.string,u){var d=t.lineWidths=[0],h=0;a.textAlign="left",a.textBaseline="middle",H.each(t.legendItems,(function(t,e){var 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t,e=this,n=e.options,i=e.minSize={},a=e.isHorizontal();n.display?(t=(H.isArray(n.text)?n.text.length:1)*H.options._parseFont(n).lineHeight+2*n.padding,e.width=i.width=a?e.maxWidth:t,e.height=i.height=a?t:e.maxHeight):e.width=i.width=e.height=i.height=0},afterFit:Ii,isHorizontal:function(){var t=this.options.position;return"top"===t||"bottom"===t},draw:function(){var t=this,e=t.ctx,n=t.options;if(n.display){var i,a,r,o=H.options._parseFont(n),s=o.lineHeight,l=s/2+n.padding,u=0,d=t.top,h=t.left,c=t.bottom,f=t.right;e.fillStyle=H.valueOrDefault(n.fontColor,N.global.defaultFontColor),e.font=o.string,t.isHorizontal()?(a=h+(f-h)/2,r=d+l,i=f-h):(a="left"===n.position?h+l:f-l,r=d+(c-d)/2,i=c-d,u=Math.PI*("left"===n.position?-.5:.5)),e.save(),e.translate(a,r),e.rotate(u),e.textAlign="center",e.textBaseline="middle";var g=n.text;if(H.isArray(g))for(var p=0,m=0;m<g.length;++m)e.fillText(g[m],0,p,i),p+=s;else e.fillText(g,0,0,i);e.restore()}}});function Oi(t,e){var n=new 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[layerindex-web,4/4] Chart.js: upgrade from 2.9.3 to 2.9.4

Commit Message

Patch