✏️ Editing: chartjs-plugin-datalabels.js Writable

/*!
 * chartjs-plugin-datalabels v2.2.0
 * https://chartjs-plugin-datalabels.netlify.app
 * (c) 2017-2022 chartjs-plugin-datalabels contributors
 * Released under the MIT license
 */
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e(require("chart.js/helpers"),require("chart.js")):"function"==typeof define&&define.amd?define(["chart.js/helpers","chart.js"],e):(t="undefined"!=typeof globalThis?globalThis:t||self).ChartDataLabels=e(t.Chart.helpers,t.Chart)}(this,(function(t,e){"use strict";var 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}(),a=function(e){var r,a=[];for(e=[].concat(e);e.length;)"string"==typeof(r=e.pop())?a.unshift.apply(a,r.split("\n")):Array.isArray(r)?e.push.apply(e,r):t.isNullOrUndef(e)||a.unshift(""+r);return a},o=function(t,e,r){var a,o=[].concat(e),n=o.length,i=t.font,l=0;for(t.font=r.string,a=0;a<n;++a)l=Math.max(t.measureText(o[a]).width,l);return t.font=i,{height:n*r.lineHeight,width:l}},n=function(t,e,r){return Math.max(t,Math.min(e,r))},i=function(t,e){var r,a,o,n,i=t.slice(),l=[];for(r=0,o=e.length;r<o;++r)n=e[r],-1===(a=i.indexOf(n))?l.push([n,1]):i.splice(a,1);for(r=0,o=i.length;r<o;++r)l.push([i[r],-1]);return l};function l(t,e){var r=e.x,a=e.y;if(null===r)return{x:0,y:-1};if(null===a)return{x:1,y:0};var o=t.x-r,n=t.y-a,i=Math.sqrt(o*o+n*n);return{x:i?o/i:0,y:i?n/i:-1}}function s(t,e,r){var a=0;return t<r.left?a|=1:t>r.right&&(a|=2),e<r.top?a|=8:e>r.bottom&&(a|=4),a}function u(t,e){var r,a,o=e.anchor,n=t;return e.clamp&&(n=function(t,e){for(var r,a,o,n=t.x0,i=t.y0,l=t.x1,u=t.y1,d=s(n,i,e),c=s(l,u,e);d|c&&!(d&c);)8&(r=d||c)?(a=n+(l-n)*(e.top-i)/(u-i),o=e.top):4&r?(a=n+(l-n)*(e.bottom-i)/(u-i),o=e.bottom):2&r?(o=i+(u-i)*(e.right-n)/(l-n),a=e.right):1&r&&(o=i+(u-i)*(e.left-n)/(l-n),a=e.left),r===d?d=s(n=a,i=o,e):c=s(l=a,u=o,e);return{x0:n,x1:l,y0:i,y1:u}}(n,e.area)),"start"===o?(r=n.x0,a=n.y0):"end"===o?(r=n.x1,a=n.y1):(r=(n.x0+n.x1)/2,a=(n.y0+n.y1)/2),function(t,e,r,a,o){switch(o){case"center":r=a=0;break;case"bottom":r=0,a=1;break;case"right":r=1,a=0;break;case"left":r=-1,a=0;break;case"top":r=0,a=-1;break;case"start":r=-r,a=-a;break;case"end":break;default:o*=Math.PI/180,r=Math.cos(o),a=Math.sin(o)}return{x:t,y:e,vx:r,vy:a}}(r,a,t.vx,t.vy,e.align)}var d=function(t,e){var r=(t.startAngle+t.endAngle)/2,a=Math.cos(r),o=Math.sin(r),n=t.innerRadius,i=t.outerRadius;return u({x0:t.x+a*n,y0:t.y+o*n,x1:t.x+a*i,y1:t.y+o*i,vx:a,vy:o},e)},c=function(t,e){var r=l(t,e.origin),a=r.x*t.options.radius,o=r.y*t.options.radius;return u({x0:t.x-a,y0:t.y-o,x1:t.x+a,y1:t.y+o,vx:r.x,vy:r.y},e)},h=function(t,e){var r=l(t,e.origin),a=t.x,o=t.y,n=0,i=0;return t.horizontal?(a=Math.min(t.x,t.base),n=Math.abs(t.base-t.x)):(o=Math.min(t.y,t.base),i=Math.abs(t.base-t.y)),u({x0:a,y0:o+i,x1:a+n,y1:o,vx:r.x,vy:r.y},e)},f=function(t,e){var r=l(t,e.origin);return u({x0:t.x,y0:t.y,x1:t.x+(t.width||0),y1:t.y+(t.height||0),vx:r.x,vy:r.y},e)},x=function(t){return Math.round(t*r)/r};function y(t,e){var r=e.chart.getDatasetMeta(e.datasetIndex).vScale;if(!r)return null;if(void 0!==r.xCenter&&void 0!==r.yCenter)return{x:r.xCenter,y:r.yCenter};var a=r.getBasePixel();return t.horizontal?{x:a,y:null}:{x:null,y:a}}function v(t,e,r){var a=r.backgroundColor,o=r.borderColor,n=r.borderWidth;(a||o&&n)&&(t.beginPath(),function(t,e,r,a,o,n){var i=Math.PI/2;if(n){var l=Math.min(n,o/2,a/2),s=e+l,u=r+l,d=e+a-l,c=r+o-l;t.moveTo(e,u),s<d&&u<c?(t.arc(s,u,l,-Math.PI,-i),t.arc(d,u,l,-i,0),t.arc(d,c,l,0,i),t.arc(s,c,l,i,Math.PI)):s<d?(t.moveTo(s,r),t.arc(d,u,l,-i,i),t.arc(s,u,l,i,Math.PI+i)):u<c?(t.arc(s,u,l,-Math.PI,0),t.arc(s,c,l,0,Math.PI)):t.arc(s,u,l,-Math.PI,Math.PI),t.closePath(),t.moveTo(e,r)}else t.rect(e,r,a,o)}(t,x(e.x)+n/2,x(e.y)+n/2,x(e.w)-n,x(e.h)-n,r.borderRadius),t.closePath(),a&&(t.fillStyle=a,t.fill()),o&&n&&(t.strokeStyle=o,t.lineWidth=n,t.lineJoin="miter",t.stroke()))}function b(t,e,r){var a=t.shadowBlur,o=r.stroked,n=x(r.x),i=x(r.y),l=x(r.w);o&&t.strokeText(e,n,i,l),r.filled&&(a&&o&&(t.shadowBlur=0),t.fillText(e,n,i,l),a&&o&&(t.shadowBlur=a))}var _=function(t,e,r,a){var o=this;o._config=t,o._index=a,o._model=null,o._rects=null,o._ctx=e,o._el=r};t.merge(_.prototype,{_modelize:function(r,a,n,i){var l,s=this,u=s._index,x=t.toFont(t.resolve([n.font,{}],i,u)),v=t.resolve([n.color,e.defaults.color],i,u);return{align:t.resolve([n.align,"center"],i,u),anchor:t.resolve([n.anchor,"center"],i,u),area:i.chart.chartArea,backgroundColor:t.resolve([n.backgroundColor,null],i,u),borderColor:t.resolve([n.borderColor,null],i,u),borderRadius:t.resolve([n.borderRadius,0],i,u),borderWidth:t.resolve([n.borderWidth,0],i,u),clamp:t.resolve([n.clamp,!1],i,u),clip:t.resolve([n.clip,!1],i,u),color:v,display:r,font:x,lines:a,offset:t.resolve([n.offset,4],i,u),opacity:t.resolve([n.opacity,1],i,u),origin:y(s._el,i),padding:t.toPadding(t.resolve([n.padding,4],i,u)),positioner:(l=s._el,l instanceof e.ArcElement?d:l instanceof e.PointElement?c:l instanceof e.BarElement?h:f),rotation:t.resolve([n.rotation,0],i,u)*(Math.PI/180),size:o(s._ctx,a,x),textAlign:t.resolve([n.textAlign,"start"],i,u),textShadowBlur:t.resolve([n.textShadowBlur,0],i,u),textShadowColor:t.resolve([n.textShadowColor,v],i,u),textStrokeColor:t.resolve([n.textStrokeColor,v],i,u),textStrokeWidth:t.resolve([n.textStrokeWidth,0],i,u)}},update:function(e){var r,o,n,i=this,l=null,s=null,u=i._index,d=i._config,c=t.resolve([d.display,!0],e,u);c&&(r=e.dataset.data[u],o=t.valueOrDefault(t.callback(d.formatter,[r,e]),r),(n=t.isNullOrUndef(o)?[]:a(o)).length&&(s=function(t){var e=t.borderWidth||0,r=t.padding,a=t.size.height,o=t.size.width,n=-o/2,i=-a/2;return{frame:{x:n-r.left-e,y:i-r.top-e,w:o+r.width+2*e,h:a+r.height+2*e},text:{x:n,y:i,w:o,h:a}}}(l=i._modelize(c,n,d,e)))),i._model=l,i._rects=s},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,a=t.ctx,o=this._model,i=this._rects;this.visible()&&(a.save(),o.clip&&(r=o.area,a.beginPath(),a.rect(r.left,r.top,r.right-r.left,r.bottom-r.top),a.clip()),a.globalAlpha=n(0,o.opacity,1),a.translate(x(e.x),x(e.y)),a.rotate(o.rotation),v(a,i.frame,o),function(t,e,r,a){var o,n=a.textAlign,i=a.color,l=!!i,s=a.font,u=e.length,d=a.textStrokeColor,c=a.textStrokeWidth,h=d&&c;if(u&&(l||h))for(r=function(t,e,r){var a=r.lineHeight,o=t.w,n=t.x;return"center"===e?n+=o/2:"end"!==e&&"right"!==e||(n+=o),{h:a,w:o,x:n,y:t.y+a/2}}(r,n,s),t.font=s.string,t.textAlign=n,t.textBaseline="middle",t.shadowBlur=a.textShadowBlur,t.shadowColor=a.textShadowColor,l&&(t.fillStyle=i),h&&(t.lineJoin="round",t.lineWidth=c,t.strokeStyle=d),o=0,u=e.length;o<u;++o)b(t,e[o],{stroked:h,filled:l,w:r.w,x:r.x,y:r.y+r.h*o})}(a,o.lines,i.text,o),a.restore())}});var p=Number.MIN_SAFE_INTEGER||-9007199254740991,g=Number.MAX_SAFE_INTEGER||9007199254740991;function m(t,e,r){var a=Math.cos(r),o=Math.sin(r),n=e.x,i=e.y;return{x:n+a*(t.x-n)-o*(t.y-i),y:i+o*(t.x-n)+a*(t.y-i)}}function w(t,e){var r,a,o,n,i,l=g,s=p,u=e.origin;for(r=0;r<t.length;++r)o=(a=t[r]).x-u.x,n=a.y-u.y,i=e.vx*o+e.vy*n,l=Math.min(l,i),s=Math.max(s,i);return{min:l,max:s}}function M(t,e){var r=e.x-t.x,a=e.y-t.y,o=Math.sqrt(r*r+a*a);return{vx:(e.x-t.x)/o,vy:(e.y-t.y)/o,origin:t,ln:o}}var k=function(){this._rotation=0,this._rect={x:0,y:0,w:0,h:0}};function $(t,e,r){var a=e.positioner(t,e),o=a.vx,n=a.vy;if(!o&&!n)return{x:a.x,y:a.y};var i=r.w,l=r.h,s=e.rotation,u=Math.abs(i/2*Math.cos(s))+Math.abs(l/2*Math.sin(s)),d=Math.abs(i/2*Math.sin(s))+Math.abs(l/2*Math.cos(s)),c=1/Math.max(Math.abs(o),Math.abs(n));return u*=o*c,d*=n*c,u+=e.offset*o,d+=e.offset*n,{x:a.x+u,y:a.y+d}}t.merge(k.prototype,{center:function(){var t=this._rect;return{x:t.x+t.w/2,y:t.y+t.h/2}},update:function(t,e,r){this._rotation=r,this._rect={x:e.x+t.x,y:e.y+t.y,w:e.w,h:e.h}},contains:function(t){var e=this,r=e._rect;return!((t=m(t,e.center(),-e._rotation)).x<r.x-1||t.y<r.y-1||t.x>r.x+r.w+2||t.y>r.y+r.h+2)},intersects:function(t){var e,r,a,o=this._points(),n=t._points(),i=[M(o[0],o[1]),M(o[0],o[3])];for(this._rotation!==t._rotation&&i.push(M(n[0],n[1]),M(n[0],n[3])),e=0;e<i.length;++e)if(r=w(o,i[e]),a=w(n,i[e]),r.max<a.min||a.max<r.min)return!1;return!0},_points:function(){var t=this,e=t._rect,r=t._rotation,a=t.center();return[m({x:e.x,y:e.y},a,r),m({x:e.x+e.w,y:e.y},a,r),m({x:e.x+e.w,y:e.y+e.h},a,r),m({x:e.x,y:e.y+e.h},a,r)]}});var C={prepare:function(t){var e,r,a,o,n,i=[];for(e=0,a=t.length;e<a;++e)for(r=0,o=t[e].length;r<o;++r)n=t[e][r],i.push(n),n.$layout={_box:new k,_hidable:!1,_visible:!0,_set:e,_idx:n._index};return i.sort((function(t,e){var r=t.$layout,a=e.$layout;return r._idx===a._idx?a._set-r._set:a._idx-r._idx})),this.update(i),i},update:function(t){var e,r,a,o,n,i=!1;for(e=0,r=t.length;e<r;++e)o=(a=t[e]).model(),(n=a.$layout)._hidable=o&&"auto"===o.display,n._visible=a.visible(),i|=n._hidable;i&&function(t){var e,r,a,o,n,i,l;for(e=0,r=t.length;e<r;++e)(o=(a=t[e]).$layout)._visible&&(l=new Proxy(a._el,{get:(t,e)=>t.getProps([e],!0)[e]}),n=a.geometry(),i=$(l,a.model(),n),o._box.update(i,n,a.rotation()));(function(t,e){var r,a,o,n;for(r=t.length-1;r>=0;--r)for(o=t[r].$layout,a=r-1;a>=0&&o._visible;--a)(n=t[a].$layout)._visible&&o._box.intersects(n._box)&&e(o,n)})(t,(function(t,e){var r=t._hidable,a=e._hidable;r&&a||a?e._visible=!1:r&&(t._visible=!1)}))}(t)},lookup:function(t,e){var r,a;for(r=t.length-1;r>=0;--r)if((a=t[r].$layout)&&a._visible&&a._box.contains(e))return t[r];return null},draw:function(t,e){var r,a,o,n,i,l;for(r=0,a=e.length;r<a;++r)(n=(o=e[r]).$layout)._visible&&(i=o.geometry(),l=$(o._el,o.model(),i),n._box.update(l,i,o.rotation()),o.draw(t,l))}},P="$default";function S(e,r,a,o){if(r){var n,i=a.$context,l=a.$groups;r[l._set]&&(n=r[l._set][l._key])&&!0===t.callback(n,[i,o])&&(e.$datalabels._dirty=!0,a.update(i))}}function I(t,e){var r,a,o=t.$datalabels,n=o._listeners;if(n.enter||n.leave){if("mousemove"===e.type)a=C.lookup(o._labels,e);else if("mouseout"!==e.type)return;r=o._hovered,o._hovered=a,function(t,e,r,a,o){var n,i;(r||a)&&(r?a?r!==a&&(i=n=!0):i=!0:n=!0,i&&S(t,e.leave,r,o),n&&S(t,e.enter,a,o))}(t,n,r,a,e)}}return{id:"datalabels",defaults:{align:"center",anchor:"center",backgroundColor:null,borderColor:null,borderRadius:0,borderWidth:0,clamp:!1,clip:!1,color:void 0,display:!0,font:{family:void 0,lineHeight:1.2,size:void 0,style:void 0,weight:null},formatter:function(e){if(t.isNullOrUndef(e))return null;var r,a,o,n=e;if(t.isObject(e))if(t.isNullOrUndef(e.label))if(t.isNullOrUndef(e.r))for(n="",o=0,a=(r=Object.keys(e)).length;o<a;++o)n+=(0!==o?", ":"")+r[o]+": "+e[r[o]];else n=e.r;else n=e.label;return""+n},labels:void 0,listeners:{},offset:4,opacity:1,padding:{top:4,right:4,bottom:4,left:4},rotation:0,textAlign:"start",textStrokeColor:void 0,textStrokeWidth:0,textShadowBlur:0,textShadowColor:void 0},beforeInit:function(t){t.$datalabels={_actives:[]}},beforeUpdate:function(t){var e=t.$datalabels;e._listened=!1,e._listeners={},e._datasets=[],e._labels=[]},afterDatasetUpdate:function(e,r,a){var o,n,i,l,s,u,d,c,h=r.index,f=e.$datalabels,x=f._datasets[h]=[],y=e.isDatasetVisible(h),v=e.data.datasets[h],b=function(e,r){var a,o,n,i=e.datalabels,l=[];return!1===i?null:(!0===i&&(i={}),r=t.merge({},[r,i]),o=r.labels||{},n=Object.keys(o),delete r.labels,n.length?n.forEach((function(e){o[e]&&l.push(t.merge({},[r,o[e],{_key:e}]))})):l.push(r),a=l.reduce((function(e,r){return t.each(r.listeners||{},(function(t,a){e[a]=e[a]||{},e[a][r._key||P]=t})),delete r.listeners,e}),{}),{labels:l,listeners:a})}(v,a),p=r.meta.data||[],g=e.ctx;for(g.save(),o=0,i=p.length;o<i;++o)if((d=p[o]).$datalabels=[],y&&d&&e.getDataVisibility(o)&&!d.skip)for(n=0,l=b.labels.length;n<l;++n)u=(s=b.labels[n])._key,(c=new _(s,g,d,o)).$groups={_set:h,_key:u||P},c.$context={active:!1,chart:e,dataIndex:o,dataset:v,datasetIndex:h},c.update(c.$context),d.$datalabels.push(c),x.push(c);g.restore(),t.merge(f._listeners,b.listeners,{merger:function(t,e,a){e[t]=e[t]||{},e[t][r.index]=a[t],f._listened=!0}})},afterUpdate:function(t){t.$datalabels._labels=C.prepare(t.$datalabels._datasets)},afterDatasetsDraw:function(t){C.draw(t,t.$datalabels._labels)},beforeEvent:function(t,e){if(t.$datalabels._listened){var r=e.event;switch(r.type){case"mousemove":case"mouseout":I(t,r);break;case"click":!function(t,e){var r=t.$datalabels,a=r._listeners.click,o=a&&C.lookup(r._labels,e);o&&S(t,a,o,e)}(t,r)}}},afterEvent:function(t){var e,r,a,o,n,l,s,u=t.$datalabels,d=u._actives,c=u._actives=t.getActiveElements(),h=i(d,c);for(e=0,r=h.length;e<r;++e)if((n=h[e])[1])for(a=0,o=(s=n[0].element.$datalabels||[]).length;a<o;++a)(l=s[a]).$context.active=1===n[1],l.update(l.$context);(u._dirty||h.length)&&(C.update(u._labels),t.render()),delete u._dirty}}}));

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