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Filename : chartjs-plugin-datalabels.min.js
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/*!
 * chartjs-plugin-datalabels v0.6.0
 * https://chartjs-plugin-datalabels.netlify.com
 * (c) 2019 Chart.js Contributors
 * Released under the MIT license
 */
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e(require("chart.js")):"function"==typeof define&&define.amd?define(["chart.js"],e):(t=t||self).ChartDataLabels=e(t.Chart)}(this,function(t){"use strict";var e=(t=t&&t.hasOwnProperty("default")?t.default:t).helpers,r=function(){if("undefined"!=typeof window){if(window.devicePixelRatio)return window.devicePixelRatio;var t=window.screen;if(t)return(t.deviceXDPI||1)/(t.logicalXDPI||1)}return 1}(),n={toTextLines:function(t){var r,n=[];for(t=[].concat(t);t.length;)"string"==typeof(r=t.pop())?n.unshift.apply(n,r.split("\n")):Array.isArray(r)?t.push.apply(t,r):e.isNullOrUndef(t)||n.unshift(""+r);return n},toFontString:function(t){return!t||e.isNullOrUndef(t.size)||e.isNullOrUndef(t.family)?null:(t.style?t.style+" ":"")+(t.weight?t.weight+" ":"")+t.size+"px "+t.family},textSize:function(t,e,r){var n,i=[].concat(e),a=i.length,o=t.font,l=0;for(t.font=r.string,n=0;n<a;++n)l=Math.max(t.measureText(i[n]).width,l);return t.font=o,{height:a*r.lineHeight,width:l}},parseFont:function(r){var i=t.defaults.global,a=e.valueOrDefault(r.size,i.defaultFontSize),o={family:e.valueOrDefault(r.family,i.defaultFontFamily),lineHeight:e.options.toLineHeight(r.lineHeight,a),size:a,style:e.valueOrDefault(r.style,i.defaultFontStyle),weight:e.valueOrDefault(r.weight,null),string:""};return o.string=n.toFontString(o),o},bound:function(t,e,r){return Math.max(t,Math.min(e,r))},arrayDiff:function(t,e){var r,n,i,a,o=t.slice(),l=[];for(r=0,i=e.length;r<i;++r)a=e[r],-1===(n=o.indexOf(a))?l.push([a,1]):o.splice(n,1);for(r=0,i=o.length;r<i;++r)l.push([o[r],-1]);return l},rasterize:function(t){return Math.round(t*r)/r}};function i(t,e){var r=e.x,n=e.y;if(null===r)return{x:0,y:-1};if(null===n)return{x:1,y:0};var i=t.x-r,a=t.y-n,o=Math.sqrt(i*i+a*a);return{x:o?i/o:0,y:o?a/o:-1}}var a=0,o=1,l=2,s=4,u=8;function d(t,e,r){var n=a;return t<r.left?n|=o:t>r.right&&(n|=l),e<r.top?n|=u:e>r.bottom&&(n|=s),n}function f(t,e){var r,n,i=e.anchor,a=t;return e.clamp&&(a=function(t,e){for(var r,n,i,a=t.x0,f=t.y0,c=t.x1,h=t.y1,x=d(a,f,e),y=d(c,h,e);x|y&&!(x&y);)(r=x||y)&u?(n=a+(c-a)*(e.top-f)/(h-f),i=e.top):r&s?(n=a+(c-a)*(e.bottom-f)/(h-f),i=e.bottom):r&l?(i=f+(h-f)*(e.right-a)/(c-a),n=e.right):r&o&&(i=f+(h-f)*(e.left-a)/(c-a),n=e.left),r===x?x=d(a=n,f=i,e):y=d(c=n,h=i,e);return{x0:a,x1:c,y0:f,y1:h}}(a,e.area)),"start"===i?(r=a.x0,n=a.y0):"end"===i?(r=a.x1,n=a.y1):(r=(a.x0+a.x1)/2,n=(a.y0+a.y1)/2),function(t,e,r,n,i){switch(i){case"center":r=n=0;break;case"bottom":r=0,n=1;break;case"right":r=1,n=0;break;case"left":r=-1,n=0;break;case"top":r=0,n=-1;break;case"start":r=-r,n=-n;break;case"end":break;default:i*=Math.PI/180,r=Math.cos(i),n=Math.sin(i)}return{x:t,y:e,vx:r,vy:n}}(r,n,t.vx,t.vy,e.align)}var c={arc:function(t,e){var r=(t.startAngle+t.endAngle)/2,n=Math.cos(r),i=Math.sin(r),a=t.innerRadius,o=t.outerRadius;return f({x0:t.x+n*a,y0:t.y+i*a,x1:t.x+n*o,y1:t.y+i*o,vx:n,vy:i},e)},point:function(t,e){var r=i(t,e.origin),n=r.x*t.radius,a=r.y*t.radius;return f({x0:t.x-n,y0:t.y-a,x1:t.x+n,y1:t.y+a,vx:r.x,vy:r.y},e)},rect:function(t,e){var r=i(t,e.origin),n=t.x,a=t.y,o=0,l=0;return t.horizontal?(n=Math.min(t.x,t.base),o=Math.abs(t.base-t.x)):(a=Math.min(t.y,t.base),l=Math.abs(t.base-t.y)),f({x0:n,y0:a+l,x1:n+o,y1:a,vx:r.x,vy:r.y},e)},fallback:function(t,e){var r=i(t,e.origin);return f({x0:t.x,y0:t.y,x1:t.x,y1:t.y,vx:r.x,vy:r.y},e)}},h=t.helpers,x=n.rasterize;function y(t){var e=t._model.horizontal,r=t._scale||e&&t._xScale||t._yScale;if(!r)return null;if(void 0!==r.xCenter&&void 0!==r.yCenter)return{x:r.xCenter,y:r.yCenter};var n=r.getBasePixel();return e?{x:n,y:null}:{x:null,y:n}}function v(t,e,r){var n=t.shadowBlur,i=r.stroked,a=x(r.x),o=x(r.y),l=x(r.w);i&&t.strokeText(e,a,o,l),r.filled&&(n&&i&&(t.shadowBlur=0),t.fillText(e,a,o,l),n&&i&&(t.shadowBlur=n))}var _=function(t,e,r,n){var i=this;i._config=t,i._index=n,i._model=null,i._rects=null,i._ctx=e,i._el=r};h.extend(_.prototype,{_modelize:function(e,r,i,a){var o,l=this._index,s=h.options.resolve,u=n.parseFont(s([i.font,{}],a,l)),d=s([i.color,t.defaults.global.defaultFontColor],a,l);return{align:s([i.align,"center"],a,l),anchor:s([i.anchor,"center"],a,l),area:a.chart.chartArea,backgroundColor:s([i.backgroundColor,null],a,l),borderColor:s([i.borderColor,null],a,l),borderRadius:s([i.borderRadius,0],a,l),borderWidth:s([i.borderWidth,0],a,l),clamp:s([i.clamp,!1],a,l),clip:s([i.clip,!1],a,l),color:d,display:e,font:u,lines:r,offset:s([i.offset,0],a,l),opacity:s([i.opacity,1],a,l),origin:y(this._el),padding:h.options.toPadding(s([i.padding,0],a,l)),positioner:(o=this._el,o instanceof t.elements.Arc?c.arc:o instanceof t.elements.Point?c.point:o instanceof t.elements.Rectangle?c.rect:c.fallback),rotation:s([i.rotation,0],a,l)*(Math.PI/180),size:n.textSize(this._ctx,r,u),textAlign:s([i.textAlign,"start"],a,l),textShadowBlur:s([i.textShadowBlur,0],a,l),textShadowColor:s([i.textShadowColor,d],a,l),textStrokeColor:s([i.textStrokeColor,d],a,l),textStrokeWidth:s([i.textStrokeWidth,0],a,l)}},update:function(t){var e,r,i,a=this,o=null,l=null,s=a._index,u=a._config,d=h.options.resolve([u.display,!0],t,s);d&&(e=t.dataset.data[s],r=h.valueOrDefault(h.callback(u.formatter,[e,t]),e),(i=h.isNullOrUndef(r)?[]:n.toTextLines(r)).length&&(l=function(t){var e=t.borderWidth||0,r=t.padding,n=t.size.height,i=t.size.width,a=-i/2,o=-n/2;return{frame:{x:a-r.left-e,y:o-r.top-e,w:i+r.width+2*e,h:n+r.height+2*e},text:{x:a,y:o,w:i,h:n}}}(o=a._modelize(d,i,u,t)))),a._model=o,a._rects=l},geometry:function(){return this._rects?this._rects.frame:{}},rotation:function(){return this._model?this._model.rotation:0},visible:function(){return this._model&&this._model.opacity},model:function(){return this._model},draw:function(t,e){var r,i=t.ctx,a=this._model,o=this._rects;this.visible()&&(i.save(),a.clip&&(r=a.area,i.beginPath(),i.rect(r.left,r.top,r.right-r.left,r.bottom-r.top),i.clip()),i.globalAlpha=n.bound(0,a.opacity,1),i.translate(x(e.x),x(e.y)),i.rotate(a.rotation),function(t,e,r){var n=r.backgroundColor,i=r.borderColor,a=r.borderWidth;(n||i&&a)&&(t.beginPath(),h.canvas.roundedRect(t,x(e.x)+a/2,x(e.y)+a/2,x(e.w)-a,x(e.h)-a,r.borderRadius),t.closePath(),n&&(t.fillStyle=n,t.fill()),i&&a&&(t.strokeStyle=i,t.lineWidth=a,t.lineJoin="miter",t.stroke()))}(i,o.frame,a),function(t,e,r,n){var i,a=n.textAlign,o=n.color,l=!!o,s=n.font,u=e.length,d=n.textStrokeColor,f=n.textStrokeWidth,c=d&&f;if(u&&(l||c))for(r=function(t,e,r){var n=r.lineHeight,i=t.w,a=t.x;return"center"===e?a+=i/2:"end"!==e&&"right"!==e||(a+=i),{h:n,w:i,x:a,y:t.y+n/2}}(r,a,s),t.font=s.string,t.textAlign=a,t.textBaseline="middle",t.shadowBlur=n.textShadowBlur,t.shadowColor=n.textShadowColor,l&&(t.fillStyle=o),c&&(t.lineJoin="round",t.lineWidth=f,t.strokeStyle=d),i=0,u=e.length;i<u;++i)v(t,e[i],{stroked:c,filled:l,w:r.w,x:r.x,y:r.y+r.h*i})}(i,a.lines,o.text,a),i.restore())}});var b=t.helpers,p=Number.MIN_SAFE_INTEGER||-9007199254740991,g=Number.MAX_SAFE_INTEGER||9007199254740991;function m(t,e,r){var n=Math.cos(r),i=Math.sin(r),a=e.x,o=e.y;return{x:a+n*(t.x-a)-i*(t.y-o),y:o+i*(t.x-a)+n*(t.y-o)}}function w(t,e){var r,n,i,a,o,l=g,s=p,u=e.origin;for(r=0;r<t.length;++r)i=(n=t[r]).x-u.x,a=n.y-u.y,o=e.vx*i+e.vy*a,l=Math.min(l,o),s=Math.max(s,o);return{min:l,max:s}}function k(t,e){var r=e.x-t.x,n=e.y-t.y,i=Math.sqrt(r*r+n*n);return{vx:(e.x-t.x)/i,vy:(e.y-t.y)/i,origin:t,ln:i}}var M=function(){this._rotation=0,this._rect={x:0,y:0,w:0,h:0}};function S(t,e,r){var n=e.positioner(t,e),i=n.vx,a=n.vy;if(!i&&!a)return{x:n.x,y:n.y};var o=r.w,l=r.h,s=e.rotation,u=Math.abs(o/2*Math.cos(s))+Math.abs(l/2*Math.sin(s)),d=Math.abs(o/2*Math.sin(s))+Math.abs(l/2*Math.cos(s)),f=1/Math.max(Math.abs(i),Math.abs(a));return u*=i*f,d*=a*f,u+=e.offset*i,d+=e.offset*a,{x:n.x+u,y:n.y+d}}b.extend(M.prototype,{center:function(){var t=this._rect;return{x:t.x+t.w/2,y:t.y+t.h/2}},update:function(t,e,r){this._rotation=r,this._rect={x:e.x+t.x,y:e.y+t.y,w:e.w,h:e.h}},contains:function(t){var e=this._rect;return!((t=m(t,this.center(),-this._rotation)).x<e.x-1||t.y<e.y-1||t.x>e.x+e.w+2||t.y>e.y+e.h+2)},intersects:function(t){var e,r,n,i=this._points(),a=t._points(),o=[k(i[0],i[1]),k(i[0],i[3])];for(this._rotation!==t._rotation&&o.push(k(a[0],a[1]),k(a[0],a[3])),e=0;e<o.length;++e)if(r=w(i,o[e]),n=w(a,o[e]),r.max<n.min||n.max<r.min)return!1;return!0},_points:function(){var t=this._rect,e=this._rotation,r=this.center();return[m({x:t.x,y:t.y},r,e),m({x:t.x+t.w,y:t.y},r,e),m({x:t.x+t.w,y:t.y+t.h},r,e),m({x:t.x,y:t.y+t.h},r,e)]}});var C={prepare:function(t){var e,r,n,i,a,o=[];for(e=0,n=t.length;e<n;++e)for(r=0,i=t[e].length;r<i;++r)a=t[e][r],o.push(a),a.$layout={_box:new M,_hidable:!1,_visible:!0,_set:e,_idx:r};return o.sort(function(t,e){var r=t.$layout,n=e.$layout;return r._idx===n._idx?r._set-n._set:n._idx-r._idx}),this.update(o),o},update:function(t){var e,r,n,i,a,o=!1;for(e=0,r=t.length;e<r;++e)i=(n=t[e]).model(),(a=n.$layout)._hidable=i&&"auto"===i.display,a._visible=n.visible(),o|=a._hidable;o&&function(t){var e,r,n,i,a,o;for(e=0,r=t.length;e<r;++e)(i=(n=t[e]).$layout)._visible&&(a=n.geometry(),o=S(n._el._model,n.model(),a),i._box.update(o,a,n.rotation()));(function(t,e){var r,n,i,a;for(r=t.length-1;r>=0;--r)for(i=t[r].$layout,n=r-1;n>=0&&i._visible;--n)(a=t[n].$layout)._visible&&i._box.intersects(a._box)&&e(i,a)})(t,function(t,e){var r=t._hidable,n=e._hidable;r&&n||n?e._visible=!1:r&&(t._visible=!1)})}(t)},lookup:function(t,e){var r,n;for(r=t.length-1;r>=0;--r)if((n=t[r].$layout)&&n._visible&&n._box.contains(e))return{dataset:n._set,label:t[r]};return null},draw:function(t,e){var r,n,i,a,o,l;for(r=0,n=e.length;r<n;++r)(a=(i=e[r]).$layout)._visible&&(o=i.geometry(),l=S(i._el._view,i.model(),o),a._box.update(l,o,i.rotation()),i.draw(t,l))}},z=t.helpers,A={align:"center",anchor:"center",backgroundColor:null,borderColor:null,borderRadius:0,borderWidth:0,clamp:!1,clip:!1,color:void 0,display:!0,font:{family:void 0,lineHeight:1.2,size:void 0,style:void 0,weight:null},formatter:function(t){if(z.isNullOrUndef(t))return null;var e,r,n,i=t;if(z.isObject(t))if(z.isNullOrUndef(t.label))if(z.isNullOrUndef(t.r))for(i="",n=0,r=(e=Object.keys(t)).length;n<r;++n)i+=(0!==n?", ":"")+e[n]+": "+t[e[n]];else i=t.r;else i=t.label;return""+i},listeners:{},offset:4,opacity:1,padding:{top:4,right:4,bottom:4,left:4},rotation:0,textAlign:"start",textStrokeColor:void 0,textStrokeWidth:0,textShadowBlur:0,textShadowColor:void 0},O=t.helpers,D="$datalabels";function $(t,e,r){var n=e&&e[r.dataset];if(n){var i=r.label,a=i.$context;!0===O.callback(n,[a])&&(t[D]._dirty=!0,i.update(a))}}function P(t,e){var r,n,i=t[D],a=i._listeners;if(a.enter||a.leave){if("mousemove"===e.type)n=C.lookup(i._labels,e);else if("mouseout"!==e.type)return;r=i._hovered,i._hovered=n,function(t,e,r,n){var i,a;(r||n)&&(r?n?r.label!==n.label&&(a=i=!0):a=!0:i=!0,a&&$(t,e.leave,r),i&&$(t,e.enter,n))}(t,a,r,n)}}t.defaults.global.plugins.datalabels=A;var N={id:"datalabels",beforeInit:function(t){t[D]={_actives:[]}},beforeUpdate:function(t){var e=t[D];e._listened=!1,e._listeners={},e._datasets=[],e._labels=[]},afterDatasetUpdate:function(t,e,r){var n,i,a,o=e.index,l=t[D],s=l._datasets[o]=[],u=t.isDatasetVisible(o),d=t.data.datasets[o],f=function(t,e){var r=t.datalabels;return!1===r?null:(!0===r&&(r={}),O.merge({},[e,r]))}(d,r),c=e.meta.data||[],h=c.length,x=t.ctx;for(x.save(),n=0;n<h;++n)i=c[n],u&&i&&!i.hidden&&!i._model.skip?(s.push(a=new _(f,x,i,n)),a.update(a.$context={active:!1,chart:t,dataIndex:n,dataset:d,datasetIndex:o})):a=null,i[D]=a;x.restore(),O.merge(l._listeners,f.listeners||{},{merger:function(t,r,n){r[t]=r[t]||{},r[t][e.index]=n[t],l._listened=!0}})},afterUpdate:function(t,e){t[D]._labels=C.prepare(t[D]._datasets,e)},afterDatasetsDraw:function(t){C.draw(t,t[D]._labels)},beforeEvent:function(t,e){if(t[D]._listened)switch(e.type){case"mousemove":case"mouseout":P(t,e);break;case"click":!function(t,e){var r=t[D],n=r._listeners.click,i=n&&C.lookup(r._labels,e);i&&$(t,n,i)}(t,e)}},afterEvent:function(e){var r,i,a,o,l=e[D],s=l._actives,u=l._actives=e.lastActive||[],d=n.arrayDiff(s,u);for(r=0,i=d.length;r<i;++r)(a=d[r])[1]&&(o=a[0][D])&&(o.$context.active=1===a[1],o.update(o.$context));(l._dirty||d.length)&&(C.update(l._labels),function(e){if(!e.animating){for(var r=t.animationService.animations,n=0,i=r.length;n<i;++n)if(r[n].chart===e)return;e.render({duration:1,lazy:!0})}}(e)),delete l._dirty}};return t.plugins.register(N),N});