15 lines
11 KiB
JavaScript
15 lines
11 KiB
JavaScript
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// Copyright 2006 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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document.createElement("canvas").getContext||function(){function C(){}function B(a){this.type_=a,this.r1_=this.y1_=this.x1_=this.r0_=this.y0_=this.x0_=0,this.colors_=[]}function A(a,b,c){!z(b)||(a.m_=b,c&&(a.lineScale_=f(e(b[0][0]*b[1][1]-b[0][1]*b[1][0]))))}function z(a){var b=0;for(;b<3;b++){var c=0;for(;c<2;c++)if(!isFinite(a[b][c])||isNaN(a[b][c]))return!1}return!0}function y(a,b,c,d){a.currentPath_.push({type:"bezierCurveTo",cp1x:b.x,cp1y:b.y,cp2x:c.x,cp2y:c.y,x:d.x,y:d.y}),a.currentX_=d.x,a.currentY_=d.y}function w(a){this.m_=r(),this.mStack_=[],this.aStack_=[],this.currentPath_=[],this.fillStyle=this.strokeStyle="#000",this.lineWidth=1,this.lineJoin="miter",this.lineCap="butt",this.miterLimit=g*1,this.globalAlpha=1,this.canvas=a;var b=a.ownerDocument.createElement("div");b.style.width=a.clientWidth+"px",b.style.height=a.clientHeight+"px",b.style.overflow="hidden",b.style.position="absolute",a.appendChild(b),this.element_=b,this.lineScale_=this.arcScaleY_=this.arcScaleX_=1}function v(a){switch(a){case"butt":return"flat";case"round":return"round";case"square":default:return"square"}}function u(a){var b,c=1;a=String(a);if(a.substring(0,3)=="rgb"){var d=a.indexOf("(",3),e=a.indexOf(")",d+1),f=a.substring(d+1,e).split(",");b="#";var g=0;for(;g<3;g++)b+=o[Number(f[g])];f.length==4&&a.substr(3,1)=="a"&&(c=f[3])}else b=a;return{color:b,alpha:c}}function t(a,b){b.fillStyle=a.fillStyle,b.lineCap=a.lineCap,b.lineJoin=a.lineJoin,b.lineWidth=a.lineWidth,b.miterLimit=a.miterLimit,b.shadowBlur=a.shadowBlur,b.shadowColor=a.shadowColor,b.shadowOffsetX=a.shadowOffsetX,b.shadowOffsetY=a.shadowOffsetY,b.strokeStyle=a.strokeStyle,b.globalAlpha=a.globalAlpha,b.arcScaleX_=a.arcScaleX_,b.arcScaleY_=a.arcScaleY_,b.lineScale_=a.lineScale_}function s(a,b){var c=r(),d=0;for(;d<3;d++){var e=0;for(;e<3;e++){var f=0,g=0;for(;g<3;g++)f+=a[d][g]*b[g][e];c[d][e]=f}}return c}function r(){return[[1,0,0],[0,1,0],[0,0,1]]}function n(a){var b=a.srcElement;b.firstChild&&(b.firstChild.style.width=b.clientWidth+"px",b.firstChild.style.height=b.clientHeight+"px")}function m(a){var b=a.srcElement;switch(a.propertyName){case"width":b.style.width=b.attributes.width.nodeValue+"px",b.getContext().clearRect();break;case"height":b.style.height=b.attributes.height.nodeValue+"px",b.getContext().clearRect()}}function k(a,b){var c=j.call(arguments,2);return function(){return a.apply(b,c.concat(j.call(arguments)))}}function i(){return this.context_||(this.context_=new w(this))}var a=Math,b=a.round,c=a.sin,d=a.cos,e=a.abs,f=a.sqrt,g=10,h=g/2,j=Array.prototype.slice,l={init:function(a){if(/MSIE/.test(navigator.userAgent)&&!window.opera){var b=a||document;b.createElement("canvas"),b.attachEvent("onreadystatechange",k(this.init_,this,b))}},init_:function(a){a.namespaces.g_vml_||a.namespaces.add("g_vml_","urn:schemas-microsoft-com:vml","#default#VML"),a.namespaces.g_o_||a.namespaces.add("g_o_","urn:schemas-microsoft-com:office:office","#default#VML");if(!a.styleSheets.ex_canvas_){var b=a.createStyleSheet();b.owningElement.id="ex_canvas_",b.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 c=a.getElementsByTagName("canvas"),d=0;for(;d<c.length;d++)this.initElement(c[d])},initElement:function(a){if(!a.getContext){a.getContext=i,a.innerHTML="",a.attachEvent("onpropertychange",m),a.attachEvent("onresize",n);var b=a.attributes;b.width&&b.width.specified?a.style.width=b.width.nodeValue+"px":a.width=a.clientWidth,b.height&&b.height.specified?a.style.height=b.height.nodeValue+"px":a.height=a.clientHeight}return a}};l.init();var o=[],p=0;for(;p<16;p++){var q=0;for(;q<16;q++)o[p*16+q]=p.toString(16)+q.toString(16)}var x=w.prototype;x.clearRect=function(){this.element_.innerHTML=""},x.beginPath=function(){this.currentPath_=[]},x.moveTo=function(a,b){var c=this.getCoords_(a,b);this.currentPath_.push({type:"moveTo",x:c.x,y:c.y}),this.currentX_=c.x,this.currentY_=c.y},x.lineTo=function(a,b){var c=this.getCoords_(a,b);this.currentPath_.push({type:"lineTo",x:c.x,y:c
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