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assets/js/plugins/visualization/echarts/chart/heatmap.js

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+define("echarts/chart/heatmap",["require","./base","../layer/heatmap","../config","../util/ecData","zrender/tool/util","zrender/tool/color","zrender/shape/Image","../chart"],function(e){function t(e,t,n,a,o){i.call(this,e,t,n,a,o),this.refresh(a)}var i=e("./base"),n=e("../layer/heatmap"),a=e("../config"),o=(e("../util/ecData"),e("zrender/tool/util")),r=(e("zrender/tool/color"),e("zrender/shape/Image"));return a.heatmap={zlevel:0,z:2,clickable:!0},t.prototype={type:a.CHART_TYPE_HEATMAP,refresh:function(e){this.clear(),e&&(this.option=e,this.series=e.series),this._init()},_init:function(){var e=this.series;this.backupShapeList();for(var t=e.length,i=0;t>i;++i)if(e[i].type===a.CHART_TYPE_HEATMAP){e[i]=this.reformOption(e[i]);var o=new n(e[i]),s=o.getCanvas(e[i].data,this.zr.getWidth(),this.zr.getHeight()),l=new r({position:[0,0],scale:[1,1],hoverable:this.option.hoverable,style:{x:0,y:0,image:s,width:s.width,height:s.height}});this.shapeList.push(l)}this.addShapeList()}},o.inherits(t,i),e("../chart").define("heatmap",t),t}),define("echarts/layer/heatmap",["require"],function(){function e(e){if(this.option=e,e)for(var i in t)this.option[i]=void 0!==e[i]?e[i]:t[i];else this.option=t}var t={blurSize:30,gradientColors:["blue","cyan","lime","yellow","red"],minAlpha:.05,valueScale:1,opacity:1},i=20,n=256;return e.prototype={getCanvas:function(e,t,a){var o=this._getBrush(),r=this._getGradient(),s=i+this.option.blurSize,l=document.createElement("canvas");l.width=t,l.height=a;for(var h=l.getContext("2d"),m=e.length,V=0;m>V;++V){var d=e[V],U=d[0],p=d[1],c=d[2],u=Math.min(1,Math.max(c*this.option.valueScale||this.option.minAlpha,this.option.minAlpha));h.globalAlpha=u,h.drawImage(o,U-s,p-s)}for(var g=h.getImageData(0,0,l.width,l.height),y=g.data,m=y.length/4;m--;){var b=4*m+3,u=y[b]/256,f=Math.floor(u*(n-1));y[b-3]=r[4*f],y[b-2]=r[4*f+1],y[b-1]=r[4*f+2],y[b]*=this.option.opacity}return h.putImageData(g,0,0),l},_getBrush:function(){if(!this._brushCanvas){this._brushCanvas=document.createElement("canvas");var e=i+this.option.blurSize,t=2*e;this._brushCanvas.width=t,this._brushCanvas.height=t;var n=this._brushCanvas.getContext("2d");n.shadowOffsetX=t,n.shadowBlur=this.option.blurSize,n.shadowColor="black",n.beginPath(),n.arc(-e,e,i,0,2*Math.PI,!0),n.closePath(),n.fill()}return this._brushCanvas},_getGradient:function(){if(!this._gradientPixels){var e=n,t=document.createElement("canvas");t.width=1,t.height=e;for(var i=t.getContext("2d"),a=i.createLinearGradient(0,0,0,e),o=this.option.gradientColors.length,r=0;o>r;++r)"string"==typeof this.option.gradientColors[r]?a.addColorStop((r+1)/o,this.option.gradientColors[r]):a.addColorStop(this.option.gradientColors[r].offset,this.option.gradientColors[r].color);i.fillStyle=a,i.fillRect(0,0,1,e),this._gradientPixels=i.getImageData(0,0,1,e).data}return this._gradientPixels}},e}),define("echarts/layer/heatmap",["require"],function(){function e(e){if(this.option=e,e)for(var i in t)this.option[i]=void 0!==e[i]?e[i]:t[i];else this.option=t}var t={blurSize:30,gradientColors:["blue","cyan","lime","yellow","red"],minAlpha:.05,valueScale:1,opacity:1},i=20,n=256;return e.prototype={getCanvas:function(e,t,a){var o=this._getBrush(),r=this._getGradient(),s=i+this.option.blurSize,l=document.createElement("canvas");l.width=t,l.height=a;for(var h=l.getContext("2d"),m=e.length,V=0;m>V;++V){var d=e[V],U=d[0],p=d[1],c=d[2],u=Math.min(1,Math.max(c*this.option.valueScale||this.option.minAlpha,this.option.minAlpha));h.globalAlpha=u,h.drawImage(o,U-s,p-s)}for(var g=h.getImageData(0,0,l.width,l.height),y=g.data,m=y.length/4;m--;){var b=4*m+3,u=y[b]/256,f=Math.floor(u*(n-1));y[b-3]=r[4*f],y[b-2]=r[4*f+1],y[b-1]=r[4*f+2],y[b]*=this.option.opacity}return h.putImageData(g,0,0),l},_getBrush:function(){if(!this._brushCanvas){this._brushCanvas=document.createElement("canvas");var e=i+this.option.blurSize,t=2*e;this._brushCanvas.width=t,this._brushCanvas.height=t;var n=this._brushCanvas.getContext("2d");n.shadowOffsetX=t,n.shadowBlur=this.option.blurSize,n.shadowColor="black",n.beginPath(),n.arc(-e,e,i,0,2*Math.PI,!0),n.closePath(),n.fill()}return this._brushCanvas},_getGradient:function(){if(!this._gradientPixels){var e=n,t=document.createElement("canvas");t.width=1,t.height=e;for(var i=t.getContext("2d"),a=i.createLinearGradient(0,0,0,e),o=this.option.gradientColors.length,r=0;o>r;++r)"string"==typeof this.option.gradientColors[r]?a.addColorStop((r+1)/o,this.option.gradientColors[r]):a.addColorStop(this.option.gradientColors[r].offset,this.option.gradientColors[r].color);i.fillStyle=a,i.fillRect(0,0,1,e),this._gradientPixels=i.getImageData(0,0,1,e).data}return this._gradientPixels}},e});