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2023 18:01:05 -0700 (PDT) From: Tim Orling X-Google-Original-From: Tim Orling To: yocto@lists.yoctoproject.org Cc: Tim Orling 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> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231017005921.2618459-1-tim.orling@konsulko.com> References: <20231017005921.2618459-1-tim.orling@konsulko.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 17 Oct 2023 01:01:14 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/yocto/message/61362 https://github.com/chartjs/Chart.js/releases/tag/v2.9.4 CVE: CVE-2020-7746 https://nvd.nist.gov/vuln/detail/CVE-2020-7746 Signed-off-by: Tim Orling --- layerindex/static/js/Chart-2.9.3.min.js | 7 - .../js/{Chart-2.9.3.js => Chart-2.9.4.js} | 27979 ++++++++-------- layerindex/static/js/Chart-2.9.4.min.js | 7 + 3 files changed, 14007 insertions(+), 13986 deletions(-) delete mode 100644 layerindex/static/js/Chart-2.9.3.min.js rename layerindex/static/js/{Chart-2.9.3.js => Chart-2.9.4.js} (96%) create mode 100644 layerindex/static/js/Chart-2.9.4.min.js 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 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t=this.options,e=t.scales||{},n=t.scale;V.each(e.xAxes,(function(t,n){t.id||(t.id=Ze(e.xAxes,"x-axis-",n))})),V.each(e.yAxes,(function(t,n){t.id||(t.id=Ze(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"}),V.each(i,(function(e){var i=e.options,r=i.id,o=Ye(i.type,e.dtype);$e(i.position)!==$e(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=Oe.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)})),V.each(a,(function(t,e){t||delete n[e]})),t.scales=n,Oe.addScalesToLayout(this)},buildOrUpdateControllers:function(){var t,e,n=this,i=[],a=n.data.datasets;for(t=0,e=a.length;t=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 ae.modes.single(this,t)},getElementsAtEvent:function(t){return ae.modes.label(this,t,{intersect:!0})},getElementsAtXAxis:function(t){return ae.modes["x-axis"](this,t,{intersect:!0})},getElementsAtEventForMode:function(t,e,n){var i=ae.modes[e];return"function"==typeof i?i(this,t,n):[]},getDatasetAtEvent:function(t){return ae.modes.dataset(this,t,{intersect:!0})},getDatasetMeta:function(t){var e=this.data.datasets[t];e._meta||(e._meta={});var n=e._meta[this.id];return n||(n=e._meta[this.id]={type:null,data:[],dataset:null,controller:null,hidden:null,xAxisID:null,yAxisID:null,order:e.order||0,index:t}),n},getVisibleDatasetCount:function(){for(var t=0,e=0,n=this.data.datasets.length;e3?n[2]-n[1]:n[1]-n[0];Math.abs(i)>1&&t!==Math.floor(t)&&(i=t-Math.floor(t));var a=V.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=V.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(V.log10(t)));return 0===t?"0":1===i||2===i||5===i||0===e||e===n.length-1?t.toExponential():""}}},on=V.isArray,sn=V.isNullOrUndef,ln=V.valueOrDefault,un=V.valueAtIndexOrDefault;function dn(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+=rl+1e-6)))return o}function hn(t,e,n,i){var a,r,o,s,l,u,d,h,c,f,g,p,m,v=n.length,b=[],x=[],y=[];for(a=0;ae){for(n=0;n=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 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=cn(o)+fn(r)),u?s&&(e.height=cn(o)+fn(r)):e.height=t.maxHeight,a.display&&s){var d=pn(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=V.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(){V.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(sn(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;nn-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;es)return function(t,e,n){var i,a,r=0,o=e[0];for(n=Math.ceil(n),i=0;iu)return r;return Math.max(u,1)}(l,t,0,s),u>0){for(e=0,n=u-1;e1?(h-d)/(u-1):null,vn(t,i,V.isNullOrUndef(a)?0:d-a,d),vn(t,i,h,V.isNullOrUndef(a)?t.length:h+a),mn(t)}return vn(t,i),mn(t)},_tickSize:function(){var t=this.options.ticks,e=V.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=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;me.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;t0){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;t0?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(ne.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}:ta?{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;a270||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 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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