discourse/public/javascripts/chartjs-plugin-datalabels.min.js

/*!
 * chartjs-plugin-datalabels v0.7.0
 * 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),o=i.length,a=t.font,l=0;for(t.font=r.string,n=0;n<o;++n)l=Math.max(t.measureText(i[n]).width,l);return t.font=a,{height:o*r.lineHeight,width:l}},parseFont:function(r){var i=t.defaults.global,o=e.valueOrDefault(r.size,i.defaultFontSize),a={family:e.valueOrDefault(r.family,i.defaultFontFamily),lineHeight:e.options.toLineHeight(r.lineHeight,o),size:o,style:e.valueOrDefault(r.style,i.defaultFontStyle),weight:e.valueOrDefault(r.weight,null),string:""};return a.string=n.toFontString(a),a},bound:function(t,e,r){return Math.max(t,Math.min(e,r))},arrayDiff:function(t,e){var r,n,i,o,a=t.slice(),l=[];for(r=0,i=e.length;r<i;++r)o=e[r],-1===(n=a.indexOf(o))?l.push([o,1]):a.splice(n,1);for(r=0,i=a.length;r<i;++r)l.push([a[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,o=t.y-n,a=Math.sqrt(i*i+o*o);return{x:a?i/a:0,y:a?o/a:-1}}var o=0,a=1,l=2,s=4,u=8;function f(t,e,r){var n=o;return t<r.left?n|=a:t>r.right&&(n|=l),e<r.top?n|=u:e>r.bottom&&(n|=s),n}function d(t,e){var r,n,i=e.anchor,o=t;return e.clamp&&(o=function(t,e){for(var r,n,i,o=t.x0,d=t.y0,c=t.x1,h=t.y1,x=f(o,d,e),y=f(c,h,e);x|y&&!(x&y);)(r=x||y)&u?(n=o+(c-o)*(e.top-d)/(h-d),i=e.top):r&s?(n=o+(c-o)*(e.bottom-d)/(h-d),i=e.bottom):r&l?(i=d+(h-d)*(e.right-o)/(c-o),n=e.right):r&a&&(i=d+(h-d)*(e.left-o)/(c-o),n=e.left),r===x?x=f(o=n,d=i,e):y=f(c=n,h=i,e);return{x0:o,x1:c,y0:d,y1:h}}(o,e.area)),"start"===i?(r=o.x0,n=o.y0):"end"===i?(r=o.x1,n=o.y1):(r=(o.x0+o.x1)/2,n=(o.y0+o.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),o=t.innerRadius,a=t.outerRadius;return d({x0:t.x+n*o,y0:t.y+i*o,x1:t.x+n*a,y1:t.y+i*a,vx:n,vy:i},e)},point:function(t,e){var r=i(t,e.origin),n=r.x*t.radius,o=r.y*t.radius;return d({x0:t.x-n,y0:t.y-o,x1:t.x+n,y1:t.y+o,vx:r.x,vy:r.y},e)},rect:function(t,e){var r=i(t,e.origin),n=t.x,o=t.y,a=0,l=0;return t.horizontal?(n=Math.min(t.x,t.base),a=Math.abs(t.base-t.x)):(o=Math.min(t.y,t.base),l=Math.abs(t.base-t.y)),d({x0:n,y0:o+l,x1:n+a,y1:o,vx:r.x,vy:r.y},e)},fallback:function(t,e){var r=i(t,e.origin);return d({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,o=x(r.x),a=x(r.y),l=x(r.w);i&&t.strokeText(e,o,a,l),r.filled&&(n&&i&&(t.shadowBlur=0),t.fillText(e,o,a,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,o){var a,l=this._index,s=h.options.resolve,u=n.parseFont(s([i.font,{}],o,l)),f=s([i.color,t.defaults.gl