libjs-excanvas 0.r3-4 / usr / share / javascript / excanvas / excanvas.min.js

if(!document.createElement("canvas").getContext){(function(){var m=Math;var mr=m.round;var ms=m.sin;var mc=m.cos;var abs=m.abs;var sqrt=m.sqrt;var Z=10;var Z2=Z/2;function getContext(){return this.context_||(this.context_=new CanvasRenderingContext2D_(this))}var slice=Array.prototype.slice;function bind(f,obj,var_args){var a=slice.call(arguments,2);return function(){return f.apply(obj,a.concat(slice.call(arguments)))}}var G_vmlCanvasManager_={init:function(opt_doc){if(/MSIE/.test(navigator.userAgent)&&!window.opera){var doc=opt_doc||document;doc.createElement("canvas");doc.attachEvent("onreadystatechange",bind(this.init_,this,doc))}},init_:function(doc){if(!doc.namespaces["g_vml_"]){doc.namespaces.add("g_vml_","urn:schemas-microsoft-com:vml","#default#VML")}if(!doc.namespaces["g_o_"]){doc.namespaces.add("g_o_","urn:schemas-microsoft-com:office:office","#default#VML")}if(!doc.styleSheets["ex_canvas_"]){var ss=doc.createStyleSheet();ss.owningElement.id="ex_canvas_";ss.cssText="canvas{display:inline-block;overflow:hidden;"+"text-align:left;width:300px;height:150px}"+"g_vml_\\:*{behavior:url(#default#VML)}"+"g_o_\\:*{behavior:url(#default#VML)}"}var els=doc.getElementsByTagName("canvas");for(var i=0;i<els.length;i++){this.initElement(els[i])}},initElement:function(el){if(!el.getContext){el.getContext=getContext;el.innerHTML="";el.attachEvent("onpropertychange",onPropertyChange);el.attachEvent("onresize",onResize);var attrs=el.attributes;if(attrs.width&&attrs.width.specified){el.style.width=attrs.width.nodeValue+"px"}else{el.width=el.clientWidth}if(attrs.height&&attrs.height.specified){el.style.height=attrs.height.nodeValue+"px"}else{el.height=el.clientHeight}}return el}};function onPropertyChange(e){var el=e.srcElement;switch(e.propertyName){case"width":el.style.width=el.attributes.width.nodeValue+"px";el.getContext().clearRect();break;case"height":el.style.height=el.attributes.height.nodeValue+"px";el.getContext().clearRect();break}}function onResize(e){var el=e.srcElement;if(el.firstChild){el.firstChild.style.width=el.clientWidth+"px";el.firstChild.style.height=el.clientHeight+"px"}}G_vmlCanvasManager_.init();var dec2hex=[];for(var i=0;i<16;i++){for(var j=0;j<16;j++){dec2hex[i*16+j]=i.toString(16)+j.toString(16)}}function createMatrixIdentity(){return[[1,0,0],[0,1,0],[0,0,1]]}function matrixMultiply(m1,m2){var result=createMatrixIdentity();for(var x=0;x<3;x++){for(var y=0;y<3;y++){var sum=0;for(var z=0;z<3;z++){sum+=m1[x][z]*m2[z][y]}result[x][y]=sum}}return result}function copyState(o1,o2){o2.fillStyle=o1.fillStyle;o2.lineCap=o1.lineCap;o2.lineJoin=o1.lineJoin;o2.lineWidth=o1.lineWidth;o2.miterLimit=o1.miterLimit;o2.shadowBlur=o1.shadowBlur;o2.shadowColor=o1.shadowColor;o2.shadowOffsetX=o1.shadowOffsetX;o2.shadowOffsetY=o1.shadowOffsetY;o2.strokeStyle=o1.strokeStyle;o2.globalAlpha=o1.globalAlpha;o2.arcScaleX_=o1.arcScaleX_;o2.arcScaleY_=o1.arcScaleY_;o2.lineScale_=o1.lineScale_}function processStyle(styleString){var str,alpha=1;styleString=String(styleString);if(styleString.substring(0,3)=="rgb"){var start=styleString.indexOf("(",3);var end=styleString.indexOf(")",start+1);var guts=styleString.substring(start+1,end).split(",");str="#";for(var i=0;i<3;i++){str+=dec2hex[Number(guts[i])]}if(guts.length==4&&styleString.substr(3,1)=="a"){alpha=guts[3]}}else{str=styleString}return{color:str,alpha:alpha}}function processLineCap(lineCap){switch(lineCap){case"butt":return"flat";case"round":return"round";case"square":default:return"square"}}function CanvasRenderingContext2D_(surfaceElement){this.m_=createMatrixIdentity();this.mStack_=[];this.aStack_=[];this.currentPath_=[];this.strokeStyle="#000";this.fillStyle="#000";this.lineWidth=1;this.lineJoin="miter";this.lineCap="butt";this.miterLimit=Z*1;this.globalAlpha=1;this.canvas=surfaceElement;var el=surfaceElement.ownerDocument.createElement("div");el.style.width=surfaceElement.clientWidth+"px";el.style.height=surfaceElement.clientHeight+"px";el.style.overflow="hidden";el.style.position="absolute";surfaceElement.appendChild(el);this.element_=el;this.arcScaleX_=1;this.arcScaleY_=1;this.lineScale_=1}var contextPrototype=CanvasRenderingContext2D_.prototype;contextPrototype.clearRect=function(){this.element_.innerHTML=""};contextPrototype.beginPath=function(){this.currentPath_=[]};contextPrototype.moveTo=function(aX,aY){var p=this.getCoords_(aX,aY);this.currentPath_.push({type:"moveTo",x:p.x,y:p.y});this.currentX_=p.x;this.currentY_=p.y};contextPrototype.lineTo=function(aX,aY){var p=this.getCoords_(aX,aY);this.currentPath_.push({type:"lineTo",x:p.x,y:p.y});this.currentX_=p.x;this.currentY_=p.y};contextPrototype.bezierCurveTo=function(aCP1x,aCP1y,aCP2x,aCP2y,aX,aY){var p=this.getCoords_(aX,aY);var cp1=this.getCoords_(aCP1x,aCP1y);var cp2=this.getCoords_(aCP2x,aCP2y);bezierCurveTo(this,cp1,cp2,p)};function bezierCurveTo(self,cp1,cp2,p){self.currentPath_.push({type:"bezierCurveTo",cp1x:cp1.x,cp1y:cp1.y,cp2x:cp2.x,cp2y:cp2.y,x:p.x,y:p.y});self.currentX_=p.x;self.currentY_=p.y}contextPrototype.quadraticCurveTo=function(aCPx,aCPy,aX,aY){var cp=this.getCoords_(aCPx,aCPy);var p=this.getCoords_(aX,aY);var cp1={x:this.currentX_+2/3*(cp.x-this.currentX_),y:this.currentY_+2/3*(cp.y-this.currentY_)};var cp2={x:cp1.x+(p.x-this.currentX_)/3,y:cp1.y+(p.y-this.currentY_)/3};bezierCurveTo(this,cp1,cp2,p)};contextPrototype.arc=function(aX,aY,aRadius,aStartAngle,aEndAngle,aClockwise){aRadius*=Z;var arcType=aClockwise?"at":"wa";var xStart=aX+mc(aStartAngle)*aRadius-Z2;var yStart=aY+ms(aStartAngle)*aRadius-Z2;var xEnd=aX+mc(aEndAngle)*aRadius-Z2;var yEnd=aY+ms(aEndAngle)*aRadius-Z2;if(xStart==xEnd&&!aClockwise){xStart+=.125}var p=this.getCoords_(aX,aY);var pStart=this.getCoords_(xStart,yStart);var pEnd=this.getCoords_(xEnd,yEnd);this.currentPath_.push({type:arcType,x:p.x,y:p.y,radius:aRadius,xStart:pStart.x,yStart:pStart.y,xEnd:pEnd.x,yEnd:pEnd.y})};contextPrototype.rect=function(aX,aY,aWidth,aHeight){this.moveTo(aX,aY);this.lineTo(aX+aWidth,aY);this.lineTo(aX+aWidth,aY+aHeight);this.lineTo(aX,aY+aHeight);this.closePath()};contextPrototype.strokeRect=function(aX,aY,aWidth,aHeight){var oldPath=this.currentPath_;this.beginPath();this.moveTo(aX,aY);this.lineTo(aX+aWidth,aY);this.lineTo(aX+aWidth,aY+aHeight);this.lineTo(aX,aY+aHeight);this.closePath();this.stroke();this.currentPath_=oldPath};contextPrototype.fillRect=function(aX,aY,aWidth,aHeight){var oldPath=this.currentPath_;this.beginPath();this.moveTo(aX,aY);this.lineTo(aX+aWidth,aY);this.lineTo(aX+aWidth,aY+aHeight);this.lineTo(aX,aY+aHeight);this.closePath();this.fill();this.currentPath_=oldPath};contextPrototype.createLinearGradient=function(aX0,aY0,aX1,aY1){var gradient=new CanvasGradient_("gradient");gradient.x0_=aX0;gradient.y0_=aY0;gradient.x1_=aX1;gradient.y1_=aY1;return gradient};contextPrototype.createRadialGradient=function(aX0,aY0,aR0,aX1,aY1,aR1){var gradient=new CanvasGradient_("gradientradial");gradient.x0_=aX0;gradient.y0_=aY0;gradient.r0_=aR0;gradient.x1_=aX1;gradient.y1_=aY1;gradient.r1_=aR1;return gradient};contextPrototype.drawImage=function(image,var_args){var dx,dy,dw,dh,sx,sy,sw,sh;var oldRuntimeWidth=image.runtimeStyle.width;var oldRuntimeHeight=image.runtimeStyle.height;image.runtimeStyle.width="auto";image.runtimeStyle.height="auto";var w=image.width;var h=image.height;image.runtimeStyle.width=oldRuntimeWidth;image.runtimeStyle.height=oldRuntimeHeight;if(arguments.length==3){dx=arguments[1];dy=arguments[2];sx=sy=0;sw=dw=w;sh=dh=h}else if(arguments.length==5){dx=arguments[1];dy=arguments[2];dw=arguments[3];dh=arguments[4];sx=sy=0;sw=w;sh=h}else if(arguments.length==9){sx=arguments[1];sy=arguments[2];sw=arguments[3];sh=arguments[4];dx=arguments[5];dy=arguments[6];dw=arguments[7];dh=arguments[8]}else{throw Error("Invalid number of arguments")}var d=this.getCoords_(dx,dy);var w2=sw/2;var h2=sh/2;var vmlStr=[];var W=10;var H=10;vmlStr.push(" <g_vml_:group",' coordsize="',Z*W,",",Z*H,'"',' coordorigin="0,0"',' style="width:',W,"px;height:",H,"px;position:absolute;");if(this.m_[0][0]!=1||this.m_[0][1]){var filter=[];filter.push("M11=",this.m_[0][0],",","M12=",this.m_[1][0],",","M21=",this.m_[0][1],",","M22=",this.m_[1][1],",","Dx=",mr(d.x/Z),",","Dy=",mr(d.y/Z),"");var max=d;var c2=this.getCoords_(dx+dw,dy);var c3=this.getCoords_(dx,dy+dh);var c4=this.getCoords_(dx+dw,dy+dh);max.x=m.max(max.x,c2.x,c3.x,c4.x);max.y=m.max(max.y,c2.y,c3.y,c4.y);vmlStr.push("padding:0 ",mr(max.x/Z),"px ",mr(max.y/Z),"px 0;filter:progid:DXImageTransform.Microsoft.Matrix(",filter.join(""),", sizingmethod='clip');")}else{vmlStr.push("top:",mr(d.y/Z),"px;left:",mr(d.x/Z),"px;")}vmlStr.push(' ">','<g_vml_:image src="',image.src,'"',' style="width:',Z*dw,"px;"," height:",Z*dh,'px;"',' cropleft="',sx/w,'"',' croptop="',sy/h,'"',' cropright="',(w-sx-sw)/w,'"',' cropbottom="',(h-sy-sh)/h,'"'," />","</g_vml_:group>");this.element_.insertAdjacentHTML("BeforeEnd",vmlStr.join(""))};contextPrototype.stroke=function(aFill){var lineStr=[];var lineOpen=false;var a=processStyle(aFill?this.fillStyle:this.strokeStyle);var color=a.color;var opacity=a.alpha*this.globalAlpha;var W=10;var H=10;lineStr.push("<g_vml_:shape",' filled="',!!aFill,'"',' style="position:absolute;width:',W,"px;height:",H,'px;"',' coordorigin="0 0" coordsize="',Z*W," ",Z*H,'"',' stroked="',!aFill,'"',' path="');var newSeq=false;var min={x:null,y:null};var max={x:null,y:null};for(var i=0;i<this.currentPath_.length;i++){var p=this.currentPath_[i];var c;switch(p.type){case"moveTo":c=p;lineStr.push(" m ",mr(p.x),",",mr(p.y));break;case"lineTo":lineStr.push(" l ",mr(p.x),",",mr(p.y));break;case"close":lineStr.push(" x ");p=null;break;case"bezierCurveTo":lineStr.push(" c ",mr(p.cp1x),",",mr(p.cp1y),",",mr(p.cp2x),",",mr(p.cp2y),",",mr(p.x),",",mr(p.y));break;case"at":case"wa":lineStr.push(" ",p.type," ",mr(p.x-this.arcScaleX_*p.radius),",",mr(p.y-this.arcScaleY_*p.radius)," ",mr(p.x+this.arcScaleX_*p.radius),",",mr(p.y+this.arcScaleY_*p.radius)," ",mr(p.xStart),",",mr(p.yStart)," ",mr(p.xEnd),",",mr(p.yEnd));break}if(p){if(min.x==null||p.x<min.x){min.x=p.x}if(max.x==null||p.x>max.x){max.x=p.x}if(min.y==null||p.y<min.y){min.y=p.y}if(max.y==null||p.y>max.y){max.y=p.y}}}lineStr.push(' ">');if(!aFill){var lineWidth=this.lineScale_*this.lineWidth;if(lineWidth<1){opacity*=lineWidth}lineStr.push("<g_vml_:stroke",' opacity="',opacity,'"',' joinstyle="',this.lineJoin,'"',' miterlimit="',this.miterLimit,'"',' endcap="',processLineCap(this.lineCap),'"',' weight="',lineWidth,'px"',' color="',color,'" />')}else if(typeof this.fillStyle=="object"){var fillStyle=this.fillStyle;var angle=0;var focus={x:0,y:0};var shift=0;var expansion=1;if(fillStyle.type_=="gradient"){var x0=fillStyle.x0_/this.arcScaleX_;var y0=fillStyle.y0_/this.arcScaleY_;var x1=fillStyle.x1_/this.arcScaleX_;var y1=fillStyle.y1_/this.arcScaleY_;var p0=this.getCoords_(x0,y0);var p1=this.getCoords_(x1,y1);var dx=p1.x-p0.x;var dy=p1.y-p0.y;angle=Math.atan2(dx,dy)*180/Math.PI;if(angle<0){angle+=360}if(angle<1e-6){angle=0}}else{var p0=this.getCoords_(fillStyle.x0_,fillStyle.y0_);var width=max.x-min.x;var height=max.y-min.y;focus={x:(p0.x-min.x)/width,y:(p0.y-min.y)/height};width/=this.arcScaleX_*Z;height/=this.arcScaleY_*Z;var dimension=m.max(width,height);shift=2*fillStyle.r0_/dimension;expansion=2*fillStyle.r1_/dimension-shift}var stops=fillStyle.colors_;stops.sort(function(cs1,cs2){return cs1.offset-cs2.offset});var length=stops.length;var color1=stops[0].color;var color2=stops[length-1].color;var opacity1=stops[0].alpha*this.globalAlpha;var opacity2=stops[length-1].alpha*this.globalAlpha;var colors=[];for(var i=0;i<length;i++){var stop=stops[i];colors.push(stop.offset*expansion+shift+" "+stop.color)}lineStr.push('<g_vml_:fill type="',fillStyle.type_,'"',' method="none" focus="100%"',' color="',color1,'"',' color2="',color2,'"',' colors="',colors.join(","),'"',' opacity="',opacity2,'"',' g_o_:opacity2="',opacity1,'"',' angle="',angle,'"',' focusposition="',focus.x,",",focus.y,'" />')}else{lineStr.push('<g_vml_:fill color="',color,'" opacity="',opacity,'" />')}lineStr.push("</g_vml_:shape>");this.element_.insertAdjacentHTML("beforeEnd",lineStr.join(""))};contextPrototype.fill=function(){this.stroke(true)};contextPrototype.closePath=function(){this.currentPath_.push({type:"close"})};contextPrototype.getCoords_=function(aX,aY){var m=this.m_;return{x:Z*(aX*m[0][0]+aY*m[1][0]+m[2][0])-Z2,y:Z*(aX*m[0][1]+aY*m[1][1]+m[2][1])-Z2}};contextPrototype.save=function(){var o={};copyState(this,o);this.aStack_.push(o);this.mStack_.push(this.m_);this.m_=matrixMultiply(createMatrixIdentity(),this.m_)};contextPrototype.restore=function(){copyState(this.aStack_.pop(),this);this.m_=this.mStack_.pop()};function matrixIsFinite(m){for(var j=0;j<3;j++){for(var k=0;k<2;k++){if(!isFinite(m[j][k])||isNaN(m[j][k])){return false}}}return true}function setM(ctx,m,updateLineScale){if(!matrixIsFinite(m)){return}ctx.m_=m;if(updateLineScale){var det=m[0][0]*m[1][1]-m[0][1]*m[1][0];ctx.lineScale_=sqrt(abs(det))}}contextPrototype.translate=function(aX,aY){var m1=[[1,0,0],[0,1,0],[aX,aY,1]];setM(this,matrixMultiply(m1,this.m_),false)};contextPrototype.rotate=function(aRot){var c=mc(aRot);var s=ms(aRot);var m1=[[c,s,0],[-s,c,0],[0,0,1]];setM(this,matrixMultiply(m1,this.m_),false)};contextPrototype.scale=function(aX,aY){this.arcScaleX_*=aX;this.arcScaleY_*=aY;var m1=[[aX,0,0],[0,aY,0],[0,0,1]];setM(this,matrixMultiply(m1,this.m_),true)};contextPrototype.transform=function(m11,m12,m21,m22,dx,dy){var m1=[[m11,m12,0],[m21,m22,0],[dx,dy,1]];setM(this,matrixMultiply(m1,this.m_),true)};contextPrototype.setTransform=function(m11,m12,m21,m22,dx,dy){var m=[[m11,m12,0],[m21,m22,0],[dx,dy,1]];setM(this,m,true)};contextPrototype.clip=function(){};contextPrototype.arcTo=function(){};contextPrototype.createPattern=function(){return new CanvasPattern_};function CanvasGradient_(aType){this.type_=aType;this.x0_=0;this.y0_=0;this.r0_=0;this.x1_=0;this.y1_=0;this.r1_=0;this.colors_=[]}CanvasGradient_.prototype.addColorStop=function(aOffset,aColor){aColor=processStyle(aColor);this.colors_.push({offset:aOffset,color:aColor.color,alpha:aColor.alpha})};function CanvasPattern_(){}G_vmlCanvasManager=G_vmlCanvasManager_;CanvasRenderingContext2D=CanvasRenderingContext2D_;CanvasGradient=CanvasGradient_;CanvasPattern=CanvasPattern_})()}