Show More
This diff has been collapsed as it changes many lines, (943 lines changed) Show them Hide them | |||||
@@ -1,19 +1,924 b'' | |||||
1 | if(!window.CanvasRenderingContext2D){(function(){var I=Math,i=I.round,L=I.sin,M=I.cos,m=10,A=m/2,Q={init:function(a){var b=a||document;if(/MSIE/.test(navigator.userAgent)&&!window.opera){var c=this;b.attachEvent("onreadystatechange",function(){c.r(b)})}},r:function(a){if(a.readyState=="complete"){if(!a.namespaces["s"]){a.namespaces.add("g_vml_","urn:schemas-microsoft-com:vml")}var b=a.createStyleSheet();b.cssText="canvas{display:inline-block;overflow:hidden;text-align:left;width:300px;height:150px}g_vml_\\:*{behavior:url(#default#VML)}"; |
|
1 | // Copyright 2006 Google Inc. | |
2 | var c=a.getElementsByTagName("canvas");for(var d=0;d<c.length;d++){if(!c[d].getContext){this.initElement(c[d])}}}},q:function(a){var b=a.outerHTML,c=a.ownerDocument.createElement(b);if(b.slice(-2)!="/>"){var d="/"+a.tagName,e;while((e=a.nextSibling)&&e.tagName!=d){e.removeNode()}if(e){e.removeNode()}}a.parentNode.replaceChild(c,a);return c},initElement:function(a){a=this.q(a);a.getContext=function(){if(this.l){return this.l}return this.l=new K(this)};a.attachEvent("onpropertychange",V);a.attachEvent("onresize", |
|
2 | // | |
3 | W);var b=a.attributes;if(b.width&&b.width.specified){a.style.width=b.width.nodeValue+"px"}else{a.width=a.clientWidth}if(b.height&&b.height.specified){a.style.height=b.height.nodeValue+"px"}else{a.height=a.clientHeight}return a}};function V(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();break}}function W(a){var b=a.srcElement; |
|
3 | // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | if(b.firstChild){b.firstChild.style.width=b.clientWidth+"px";b.firstChild.style.height=b.clientHeight+"px"}}Q.init();var R=[];for(var E=0;E<16;E++){for(var F=0;F<16;F++){R[E*16+F]=E.toString(16)+F.toString(16)}}function J(){return[[1,0,0],[0,1,0],[0,0,1]]}function G(a,b){var c=J();for(var d=0;d<3;d++){for(var e=0;e<3;e++){var g=0;for(var h=0;h<3;h++){g+=a[d][h]*b[h][e]}c[d][e]=g}}return c}function N(a,b){b.fillStyle=a.fillStyle;b.lineCap=a.lineCap;b.lineJoin=a.lineJoin;b.lineWidth=a.lineWidth;b.miterLimit= |
|
4 | // you may not use this file except in compliance with the License. | |
5 | a.miterLimit;b.shadowBlur=a.shadowBlur;b.shadowColor=a.shadowColor;b.shadowOffsetX=a.shadowOffsetX;b.shadowOffsetY=a.shadowOffsetY;b.strokeStyle=a.strokeStyle;b.d=a.d;b.e=a.e}function O(a){var b,c=1;a=String(a);if(a.substring(0,3)=="rgb"){var d=a.indexOf("(",3),e=a.indexOf(")",d+1),g=a.substring(d+1,e).split(",");b="#";for(var h=0;h<3;h++){b+=R[Number(g[h])]}if(g.length==4&&a.substr(3,1)=="a"){c=g[3]}}else{b=a}return[b,c]}function S(a){switch(a){case "butt":return"flat";case "round":return"round"; |
|
5 | // You may obtain a copy of the License at | |
6 | case "square":default:return"square"}}function K(a){this.a=J();this.m=[];this.k=[];this.c=[];this.strokeStyle="#000";this.fillStyle="#000";this.lineWidth=1;this.lineJoin="miter";this.lineCap="butt";this.miterLimit=m*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.j=b;this.d=1;this.e=1}var j=K.prototype;j.clearRect=function(){this.j.innerHTML= |
|
6 | // | |
7 | "";this.c=[]};j.beginPath=function(){this.c=[]};j.moveTo=function(a,b){this.c.push({type:"moveTo",x:a,y:b});this.f=a;this.g=b};j.lineTo=function(a,b){this.c.push({type:"lineTo",x:a,y:b});this.f=a;this.g=b};j.bezierCurveTo=function(a,b,c,d,e,g){this.c.push({type:"bezierCurveTo",cp1x:a,cp1y:b,cp2x:c,cp2y:d,x:e,y:g});this.f=e;this.g=g};j.quadraticCurveTo=function(a,b,c,d){var e=this.f+0.6666666666666666*(a-this.f),g=this.g+0.6666666666666666*(b-this.g),h=e+(c-this.f)/3,l=g+(d-this.g)/3;this.bezierCurveTo(e, |
|
7 | // http://www.apache.org/licenses/LICENSE-2.0 | |
8 | g,h,l,c,d)};j.arc=function(a,b,c,d,e,g){c*=m;var h=g?"at":"wa",l=a+M(d)*c-A,n=b+L(d)*c-A,o=a+M(e)*c-A,f=b+L(e)*c-A;if(l==o&&!g){l+=0.125}this.c.push({type:h,x:a,y:b,radius:c,xStart:l,yStart:n,xEnd:o,yEnd:f})};j.rect=function(a,b,c,d){this.moveTo(a,b);this.lineTo(a+c,b);this.lineTo(a+c,b+d);this.lineTo(a,b+d);this.closePath()};j.strokeRect=function(a,b,c,d){this.beginPath();this.moveTo(a,b);this.lineTo(a+c,b);this.lineTo(a+c,b+d);this.lineTo(a,b+d);this.closePath();this.stroke()};j.fillRect=function(a, |
|
8 | // | |
9 | b,c,d){this.beginPath();this.moveTo(a,b);this.lineTo(a+c,b);this.lineTo(a+c,b+d);this.lineTo(a,b+d);this.closePath();this.fill()};j.createLinearGradient=function(a,b,c,d){var e=new H("gradient");return e};j.createRadialGradient=function(a,b,c,d,e,g){var h=new H("gradientradial");h.n=c;h.o=g;h.i.x=a;h.i.y=b;return h};j.drawImage=function(a,b){var c,d,e,g,h,l,n,o,f=a.runtimeStyle.width,k=a.runtimeStyle.height;a.runtimeStyle.width="auto";a.runtimeStyle.height="auto";var q=a.width,r=a.height;a.runtimeStyle.width= |
|
9 | // Unless required by applicable law or agreed to in writing, software | |
10 | f;a.runtimeStyle.height=k;if(arguments.length==3){c=arguments[1];d=arguments[2];h=(l=0);n=(e=q);o=(g=r)}else if(arguments.length==5){c=arguments[1];d=arguments[2];e=arguments[3];g=arguments[4];h=(l=0);n=q;o=r}else if(arguments.length==9){h=arguments[1];l=arguments[2];n=arguments[3];o=arguments[4];c=arguments[5];d=arguments[6];e=arguments[7];g=arguments[8]}else{throw"Invalid number of arguments";}var s=this.b(c,d),t=[],v=10,w=10;t.push(" <g_vml_:group",' coordsize="',m*v,",",m*w,'"',' coordorigin="0,0"', |
|
10 | // distributed under the License is distributed on an "AS IS" BASIS, | |
11 | ' style="width:',v,";height:",w,";position:absolute;");if(this.a[0][0]!=1||this.a[0][1]){var x=[];x.push("M11='",this.a[0][0],"',","M12='",this.a[1][0],"',","M21='",this.a[0][1],"',","M22='",this.a[1][1],"',","Dx='",i(s.x/m),"',","Dy='",i(s.y/m),"'");var p=s,y=this.b(c+e,d),z=this.b(c,d+g),B=this.b(c+e,d+g);p.x=Math.max(p.x,y.x,z.x,B.x);p.y=Math.max(p.y,y.y,z.y,B.y);t.push("padding:0 ",i(p.x/m),"px ",i(p.y/m),"px 0;filter:progid:DXImageTransform.Microsoft.Matrix(",x.join(""),", sizingmethod='clip');")}else{t.push("top:", |
|
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | i(s.y/m),"px;left:",i(s.x/m),"px;")}t.push(' ">','<g_vml_:image src="',a.src,'"',' style="width:',m*e,";"," height:",m*g,';"',' cropleft="',h/q,'"',' croptop="',l/r,'"',' cropright="',(q-h-n)/q,'"',' cropbottom="',(r-l-o)/r,'"'," />","</g_vml_:group>");this.j.insertAdjacentHTML("BeforeEnd",t.join(""))};j.stroke=function(a){var b=[],c=O(a?this.fillStyle:this.strokeStyle),d=c[0],e=c[1]*this.globalAlpha,g=10,h=10;b.push("<g_vml_:shape",' fillcolor="',d,'"',' filled="',Boolean(a),'"',' style="position:absolute;width:', |
|
12 | // See the License for the specific language governing permissions and | |
13 | g,";height:",h,';"',' coordorigin="0 0" coordsize="',m*g," ",m*h,'"',' stroked="',!a,'"',' strokeweight="',this.lineWidth,'"',' strokecolor="',d,'"',' path="');var l={x:null,y:null},n={x:null,y:null};for(var o=0;o<this.c.length;o++){var f=this.c[o];if(f.type=="moveTo"){b.push(" m ");var k=this.b(f.x,f.y);b.push(i(k.x),",",i(k.y))}else if(f.type=="lineTo"){b.push(" l ");var k=this.b(f.x,f.y);b.push(i(k.x),",",i(k.y))}else if(f.type=="close"){b.push(" x ")}else if(f.type=="bezierCurveTo"){b.push(" c "); |
|
13 | // limitations under the License. | |
14 | var k=this.b(f.x,f.y),q=this.b(f.cp1x,f.cp1y),r=this.b(f.cp2x,f.cp2y);b.push(i(q.x),",",i(q.y),",",i(r.x),",",i(r.y),",",i(k.x),",",i(k.y))}else if(f.type=="at"||f.type=="wa"){b.push(" ",f.type," ");var k=this.b(f.x,f.y),s=this.b(f.xStart,f.yStart),t=this.b(f.xEnd,f.yEnd);b.push(i(k.x-this.d*f.radius),",",i(k.y-this.e*f.radius)," ",i(k.x+this.d*f.radius),",",i(k.y+this.e*f.radius)," ",i(s.x),",",i(s.y)," ",i(t.x),",",i(t.y))}if(k){if(l.x==null||k.x<l.x){l.x=k.x}if(n.x==null||k.x>n.x){n.x=k.x}if(l.y== |
|
14 | ||
15 | null||k.y<l.y){l.y=k.y}if(n.y==null||k.y>n.y){n.y=k.y}}}b.push(' ">');if(typeof this.fillStyle=="object"){var v={x:"50%",y:"50%"},w=n.x-l.x,x=n.y-l.y,p=w>x?w:x;v.x=i(this.fillStyle.i.x/w*100+50)+"%";v.y=i(this.fillStyle.i.y/x*100+50)+"%";var y=[];if(this.fillStyle.p=="gradientradial"){var z=this.fillStyle.n/p*100,B=this.fillStyle.o/p*100-z}else{var z=0,B=100}var C={offset:null,color:null},D={offset:null,color:null};this.fillStyle.h.sort(function(T,U){return T.offset-U.offset});for(var o=0;o<this.fillStyle.h.length;o++){var u= |
|
15 | ||
16 | this.fillStyle.h[o];y.push(u.offset*B+z,"% ",u.color,",");if(u.offset>C.offset||C.offset==null){C.offset=u.offset;C.color=u.color}if(u.offset<D.offset||D.offset==null){D.offset=u.offset;D.color=u.color}}y.pop();b.push("<g_vml_:fill",' color="',D.color,'"',' color2="',C.color,'"',' type="',this.fillStyle.p,'"',' focusposition="',v.x,", ",v.y,'"',' colors="',y.join(""),'"',' opacity="',e,'" />')}else if(a){b.push('<g_vml_:fill color="',d,'" opacity="',e,'" />')}else{b.push("<g_vml_:stroke",' opacity="', |
|
16 | // Known Issues: | |
17 | e,'"',' joinstyle="',this.lineJoin,'"',' miterlimit="',this.miterLimit,'"',' endcap="',S(this.lineCap),'"',' weight="',this.lineWidth,'px"',' color="',d,'" />')}b.push("</g_vml_:shape>");this.j.insertAdjacentHTML("beforeEnd",b.join(""));this.c=[]};j.fill=function(){this.stroke(true)};j.closePath=function(){this.c.push({type:"close"})};j.b=function(a,b){return{x:m*(a*this.a[0][0]+b*this.a[1][0]+this.a[2][0])-A,y:m*(a*this.a[0][1]+b*this.a[1][1]+this.a[2][1])-A}};j.save=function(){var a={};N(this,a); |
|
17 | // | |
18 | this.k.push(a);this.m.push(this.a);this.a=G(J(),this.a)};j.restore=function(){N(this.k.pop(),this);this.a=this.m.pop()};j.translate=function(a,b){var c=[[1,0,0],[0,1,0],[a,b,1]];this.a=G(c,this.a)};j.rotate=function(a){var b=M(a),c=L(a),d=[[b,c,0],[-c,b,0],[0,0,1]];this.a=G(d,this.a)};j.scale=function(a,b){this.d*=a;this.e*=b;var c=[[a,0,0],[0,b,0],[0,0,1]];this.a=G(c,this.a)};j.clip=function(){};j.arcTo=function(){};j.createPattern=function(){return new P};function H(a){this.p=a;this.n=0;this.o= |
|
18 | // * Patterns are not implemented. | |
19 | 0;this.h=[];this.i={x:0,y:0}}H.prototype.addColorStop=function(a,b){b=O(b);this.h.push({offset:1-a,color:b})};function P(){}G_vmlCanvasManager=Q;CanvasRenderingContext2D=K;CanvasGradient=H;CanvasPattern=P})()}; |
|
19 | // * Radial gradient are not implemented. The VML version of these look very | |
|
20 | // different from the canvas one. | |||
|
21 | // * Clipping paths are not implemented. | |||
|
22 | // * Coordsize. The width and height attribute have higher priority than the | |||
|
23 | // width and height style values which isn't correct. | |||
|
24 | // * Painting mode isn't implemented. | |||
|
25 | // * Canvas width/height should is using content-box by default. IE in | |||
|
26 | // Quirks mode will draw the canvas using border-box. Either change your | |||
|
27 | // doctype to HTML5 | |||
|
28 | // (http://www.whatwg.org/specs/web-apps/current-work/#the-doctype) | |||
|
29 | // or use Box Sizing Behavior from WebFX | |||
|
30 | // (http://webfx.eae.net/dhtml/boxsizing/boxsizing.html) | |||
|
31 | // * Non uniform scaling does not correctly scale strokes. | |||
|
32 | // * Optimize. There is always room for speed improvements. | |||
|
33 | ||||
|
34 | // Only add this code if we do not already have a canvas implementation | |||
|
35 | if (!document.createElement('canvas').getContext) { | |||
|
36 | ||||
|
37 | (function() { | |||
|
38 | ||||
|
39 | // alias some functions to make (compiled) code shorter | |||
|
40 | var m = Math; | |||
|
41 | var mr = m.round; | |||
|
42 | var ms = m.sin; | |||
|
43 | var mc = m.cos; | |||
|
44 | var abs = m.abs; | |||
|
45 | var sqrt = m.sqrt; | |||
|
46 | ||||
|
47 | // this is used for sub pixel precision | |||
|
48 | var Z = 10; | |||
|
49 | var Z2 = Z / 2; | |||
|
50 | ||||
|
51 | /** | |||
|
52 | * This funtion is assigned to the <canvas> elements as element.getContext(). | |||
|
53 | * @this {HTMLElement} | |||
|
54 | * @return {CanvasRenderingContext2D_} | |||
|
55 | */ | |||
|
56 | function getContext() { | |||
|
57 | return this.context_ || | |||
|
58 | (this.context_ = new CanvasRenderingContext2D_(this)); | |||
|
59 | } | |||
|
60 | ||||
|
61 | var slice = Array.prototype.slice; | |||
|
62 | ||||
|
63 | /** | |||
|
64 | * Binds a function to an object. The returned function will always use the | |||
|
65 | * passed in {@code obj} as {@code this}. | |||
|
66 | * | |||
|
67 | * Example: | |||
|
68 | * | |||
|
69 | * g = bind(f, obj, a, b) | |||
|
70 | * g(c, d) // will do f.call(obj, a, b, c, d) | |||
|
71 | * | |||
|
72 | * @param {Function} f The function to bind the object to | |||
|
73 | * @param {Object} obj The object that should act as this when the function | |||
|
74 | * is called | |||
|
75 | * @param {*} var_args Rest arguments that will be used as the initial | |||
|
76 | * arguments when the function is called | |||
|
77 | * @return {Function} A new function that has bound this | |||
|
78 | */ | |||
|
79 | function bind(f, obj, var_args) { | |||
|
80 | var a = slice.call(arguments, 2); | |||
|
81 | return function() { | |||
|
82 | return f.apply(obj, a.concat(slice.call(arguments))); | |||
|
83 | }; | |||
|
84 | } | |||
|
85 | ||||
|
86 | var G_vmlCanvasManager_ = { | |||
|
87 | init: function(opt_doc) { | |||
|
88 | if (/MSIE/.test(navigator.userAgent) && !window.opera) { | |||
|
89 | var doc = opt_doc || document; | |||
|
90 | // Create a dummy element so that IE will allow canvas elements to be | |||
|
91 | // recognized. | |||
|
92 | doc.createElement('canvas'); | |||
|
93 | doc.attachEvent('onreadystatechange', bind(this.init_, this, doc)); | |||
|
94 | } | |||
|
95 | }, | |||
|
96 | ||||
|
97 | init_: function(doc) { | |||
|
98 | // create xmlns | |||
|
99 | if (!doc.namespaces['g_vml_']) { | |||
|
100 | doc.namespaces.add('g_vml_', 'urn:schemas-microsoft-com:vml', | |||
|
101 | '#default#VML'); | |||
|
102 | ||||
|
103 | } | |||
|
104 | if (!doc.namespaces['g_o_']) { | |||
|
105 | doc.namespaces.add('g_o_', 'urn:schemas-microsoft-com:office:office', | |||
|
106 | '#default#VML'); | |||
|
107 | } | |||
|
108 | ||||
|
109 | // Setup default CSS. Only add one style sheet per document | |||
|
110 | if (!doc.styleSheets['ex_canvas_']) { | |||
|
111 | var ss = doc.createStyleSheet(); | |||
|
112 | ss.owningElement.id = 'ex_canvas_'; | |||
|
113 | ss.cssText = 'canvas{display:inline-block;overflow:hidden;' + | |||
|
114 | // default size is 300x150 in Gecko and Opera | |||
|
115 | 'text-align:left;width:300px;height:150px}' + | |||
|
116 | 'g_vml_\\:*{behavior:url(#default#VML)}' + | |||
|
117 | 'g_o_\\:*{behavior:url(#default#VML)}'; | |||
|
118 | ||||
|
119 | } | |||
|
120 | ||||
|
121 | // find all canvas elements | |||
|
122 | var els = doc.getElementsByTagName('canvas'); | |||
|
123 | for (var i = 0; i < els.length; i++) { | |||
|
124 | this.initElement(els[i]); | |||
|
125 | } | |||
|
126 | }, | |||
|
127 | ||||
|
128 | /** | |||
|
129 | * Public initializes a canvas element so that it can be used as canvas | |||
|
130 | * element from now on. This is called automatically before the page is | |||
|
131 | * loaded but if you are creating elements using createElement you need to | |||
|
132 | * make sure this is called on the element. | |||
|
133 | * @param {HTMLElement} el The canvas element to initialize. | |||
|
134 | * @return {HTMLElement} the element that was created. | |||
|
135 | */ | |||
|
136 | initElement: function(el) { | |||
|
137 | if (!el.getContext) { | |||
|
138 | ||||
|
139 | el.getContext = getContext; | |||
|
140 | ||||
|
141 | // Remove fallback content. There is no way to hide text nodes so we | |||
|
142 | // just remove all childNodes. We could hide all elements and remove | |||
|
143 | // text nodes but who really cares about the fallback content. | |||
|
144 | el.innerHTML = ''; | |||
|
145 | ||||
|
146 | // do not use inline function because that will leak memory | |||
|
147 | el.attachEvent('onpropertychange', onPropertyChange); | |||
|
148 | el.attachEvent('onresize', onResize); | |||
|
149 | ||||
|
150 | var attrs = el.attributes; | |||
|
151 | if (attrs.width && attrs.width.specified) { | |||
|
152 | // TODO: use runtimeStyle and coordsize | |||
|
153 | // el.getContext().setWidth_(attrs.width.nodeValue); | |||
|
154 | el.style.width = attrs.width.nodeValue + 'px'; | |||
|
155 | } else { | |||
|
156 | el.width = el.clientWidth; | |||
|
157 | } | |||
|
158 | if (attrs.height && attrs.height.specified) { | |||
|
159 | // TODO: use runtimeStyle and coordsize | |||
|
160 | // el.getContext().setHeight_(attrs.height.nodeValue); | |||
|
161 | el.style.height = attrs.height.nodeValue + 'px'; | |||
|
162 | } else { | |||
|
163 | el.height = el.clientHeight; | |||
|
164 | } | |||
|
165 | //el.getContext().setCoordsize_() | |||
|
166 | } | |||
|
167 | return el; | |||
|
168 | } | |||
|
169 | }; | |||
|
170 | ||||
|
171 | function onPropertyChange(e) { | |||
|
172 | var el = e.srcElement; | |||
|
173 | ||||
|
174 | switch (e.propertyName) { | |||
|
175 | case 'width': | |||
|
176 | el.style.width = el.attributes.width.nodeValue + 'px'; | |||
|
177 | el.getContext().clearRect(); | |||
|
178 | break; | |||
|
179 | case 'height': | |||
|
180 | el.style.height = el.attributes.height.nodeValue + 'px'; | |||
|
181 | el.getContext().clearRect(); | |||
|
182 | break; | |||
|
183 | } | |||
|
184 | } | |||
|
185 | ||||
|
186 | function onResize(e) { | |||
|
187 | var el = e.srcElement; | |||
|
188 | if (el.firstChild) { | |||
|
189 | el.firstChild.style.width = el.clientWidth + 'px'; | |||
|
190 | el.firstChild.style.height = el.clientHeight + 'px'; | |||
|
191 | } | |||
|
192 | } | |||
|
193 | ||||
|
194 | G_vmlCanvasManager_.init(); | |||
|
195 | ||||
|
196 | // precompute "00" to "FF" | |||
|
197 | var dec2hex = []; | |||
|
198 | for (var i = 0; i < 16; i++) { | |||
|
199 | for (var j = 0; j < 16; j++) { | |||
|
200 | dec2hex[i * 16 + j] = i.toString(16) + j.toString(16); | |||
|
201 | } | |||
|
202 | } | |||
|
203 | ||||
|
204 | function createMatrixIdentity() { | |||
|
205 | return [ | |||
|
206 | [1, 0, 0], | |||
|
207 | [0, 1, 0], | |||
|
208 | [0, 0, 1] | |||
|
209 | ]; | |||
|
210 | } | |||
|
211 | ||||
|
212 | function matrixMultiply(m1, m2) { | |||
|
213 | var result = createMatrixIdentity(); | |||
|
214 | ||||
|
215 | for (var x = 0; x < 3; x++) { | |||
|
216 | for (var y = 0; y < 3; y++) { | |||
|
217 | var sum = 0; | |||
|
218 | ||||
|
219 | for (var z = 0; z < 3; z++) { | |||
|
220 | sum += m1[x][z] * m2[z][y]; | |||
|
221 | } | |||
|
222 | ||||
|
223 | result[x][y] = sum; | |||
|
224 | } | |||
|
225 | } | |||
|
226 | return result; | |||
|
227 | } | |||
|
228 | ||||
|
229 | function copyState(o1, o2) { | |||
|
230 | o2.fillStyle = o1.fillStyle; | |||
|
231 | o2.lineCap = o1.lineCap; | |||
|
232 | o2.lineJoin = o1.lineJoin; | |||
|
233 | o2.lineWidth = o1.lineWidth; | |||
|
234 | o2.miterLimit = o1.miterLimit; | |||
|
235 | o2.shadowBlur = o1.shadowBlur; | |||
|
236 | o2.shadowColor = o1.shadowColor; | |||
|
237 | o2.shadowOffsetX = o1.shadowOffsetX; | |||
|
238 | o2.shadowOffsetY = o1.shadowOffsetY; | |||
|
239 | o2.strokeStyle = o1.strokeStyle; | |||
|
240 | o2.globalAlpha = o1.globalAlpha; | |||
|
241 | o2.arcScaleX_ = o1.arcScaleX_; | |||
|
242 | o2.arcScaleY_ = o1.arcScaleY_; | |||
|
243 | o2.lineScale_ = o1.lineScale_; | |||
|
244 | } | |||
|
245 | ||||
|
246 | function processStyle(styleString) { | |||
|
247 | var str, alpha = 1; | |||
|
248 | ||||
|
249 | styleString = String(styleString); | |||
|
250 | if (styleString.substring(0, 3) == 'rgb') { | |||
|
251 | var start = styleString.indexOf('(', 3); | |||
|
252 | var end = styleString.indexOf(')', start + 1); | |||
|
253 | var guts = styleString.substring(start + 1, end).split(','); | |||
|
254 | ||||
|
255 | str = '#'; | |||
|
256 | for (var i = 0; i < 3; i++) { | |||
|
257 | str += dec2hex[Number(guts[i])]; | |||
|
258 | } | |||
|
259 | ||||
|
260 | if (guts.length == 4 && styleString.substr(3, 1) == 'a') { | |||
|
261 | alpha = guts[3]; | |||
|
262 | } | |||
|
263 | } else { | |||
|
264 | str = styleString; | |||
|
265 | } | |||
|
266 | ||||
|
267 | return {color: str, alpha: alpha}; | |||
|
268 | } | |||
|
269 | ||||
|
270 | function processLineCap(lineCap) { | |||
|
271 | switch (lineCap) { | |||
|
272 | case 'butt': | |||
|
273 | return 'flat'; | |||
|
274 | case 'round': | |||
|
275 | return 'round'; | |||
|
276 | case 'square': | |||
|
277 | default: | |||
|
278 | return 'square'; | |||
|
279 | } | |||
|
280 | } | |||
|
281 | ||||
|
282 | /** | |||
|
283 | * This class implements CanvasRenderingContext2D interface as described by | |||
|
284 | * the WHATWG. | |||
|
285 | * @param {HTMLElement} surfaceElement The element that the 2D context should | |||
|
286 | * be associated with | |||
|
287 | */ | |||
|
288 | function CanvasRenderingContext2D_(surfaceElement) { | |||
|
289 | this.m_ = createMatrixIdentity(); | |||
|
290 | ||||
|
291 | this.mStack_ = []; | |||
|
292 | this.aStack_ = []; | |||
|
293 | this.currentPath_ = []; | |||
|
294 | ||||
|
295 | // Canvas context properties | |||
|
296 | this.strokeStyle = '#000'; | |||
|
297 | this.fillStyle = '#000'; | |||
|
298 | ||||
|
299 | this.lineWidth = 1; | |||
|
300 | this.lineJoin = 'miter'; | |||
|
301 | this.lineCap = 'butt'; | |||
|
302 | this.miterLimit = Z * 1; | |||
|
303 | this.globalAlpha = 1; | |||
|
304 | this.canvas = surfaceElement; | |||
|
305 | ||||
|
306 | var el = surfaceElement.ownerDocument.createElement('div'); | |||
|
307 | el.style.width = surfaceElement.clientWidth + 'px'; | |||
|
308 | el.style.height = surfaceElement.clientHeight + 'px'; | |||
|
309 | el.style.overflow = 'hidden'; | |||
|
310 | el.style.position = 'absolute'; | |||
|
311 | surfaceElement.appendChild(el); | |||
|
312 | ||||
|
313 | this.element_ = el; | |||
|
314 | this.arcScaleX_ = 1; | |||
|
315 | this.arcScaleY_ = 1; | |||
|
316 | this.lineScale_ = 1; | |||
|
317 | } | |||
|
318 | ||||
|
319 | var contextPrototype = CanvasRenderingContext2D_.prototype; | |||
|
320 | contextPrototype.clearRect = function() { | |||
|
321 | this.element_.innerHTML = ''; | |||
|
322 | }; | |||
|
323 | ||||
|
324 | contextPrototype.beginPath = function() { | |||
|
325 | // TODO: Branch current matrix so that save/restore has no effect | |||
|
326 | // as per safari docs. | |||
|
327 | this.currentPath_ = []; | |||
|
328 | }; | |||
|
329 | ||||
|
330 | contextPrototype.moveTo = function(aX, aY) { | |||
|
331 | var p = this.getCoords_(aX, aY); | |||
|
332 | this.currentPath_.push({type: 'moveTo', x: p.x, y: p.y}); | |||
|
333 | this.currentX_ = p.x; | |||
|
334 | this.currentY_ = p.y; | |||
|
335 | }; | |||
|
336 | ||||
|
337 | contextPrototype.lineTo = function(aX, aY) { | |||
|
338 | var p = this.getCoords_(aX, aY); | |||
|
339 | this.currentPath_.push({type: 'lineTo', x: p.x, y: p.y}); | |||
|
340 | ||||
|
341 | this.currentX_ = p.x; | |||
|
342 | this.currentY_ = p.y; | |||
|
343 | }; | |||
|
344 | ||||
|
345 | contextPrototype.bezierCurveTo = function(aCP1x, aCP1y, | |||
|
346 | aCP2x, aCP2y, | |||
|
347 | aX, aY) { | |||
|
348 | var p = this.getCoords_(aX, aY); | |||
|
349 | var cp1 = this.getCoords_(aCP1x, aCP1y); | |||
|
350 | var cp2 = this.getCoords_(aCP2x, aCP2y); | |||
|
351 | bezierCurveTo(this, cp1, cp2, p); | |||
|
352 | }; | |||
|
353 | ||||
|
354 | // Helper function that takes the already fixed cordinates. | |||
|
355 | function bezierCurveTo(self, cp1, cp2, p) { | |||
|
356 | self.currentPath_.push({ | |||
|
357 | type: 'bezierCurveTo', | |||
|
358 | cp1x: cp1.x, | |||
|
359 | cp1y: cp1.y, | |||
|
360 | cp2x: cp2.x, | |||
|
361 | cp2y: cp2.y, | |||
|
362 | x: p.x, | |||
|
363 | y: p.y | |||
|
364 | }); | |||
|
365 | self.currentX_ = p.x; | |||
|
366 | self.currentY_ = p.y; | |||
|
367 | } | |||
|
368 | ||||
|
369 | contextPrototype.quadraticCurveTo = function(aCPx, aCPy, aX, aY) { | |||
|
370 | // the following is lifted almost directly from | |||
|
371 | // http://developer.mozilla.org/en/docs/Canvas_tutorial:Drawing_shapes | |||
|
372 | ||||
|
373 | var cp = this.getCoords_(aCPx, aCPy); | |||
|
374 | var p = this.getCoords_(aX, aY); | |||
|
375 | ||||
|
376 | var cp1 = { | |||
|
377 | x: this.currentX_ + 2.0 / 3.0 * (cp.x - this.currentX_), | |||
|
378 | y: this.currentY_ + 2.0 / 3.0 * (cp.y - this.currentY_) | |||
|
379 | }; | |||
|
380 | var cp2 = { | |||
|
381 | x: cp1.x + (p.x - this.currentX_) / 3.0, | |||
|
382 | y: cp1.y + (p.y - this.currentY_) / 3.0 | |||
|
383 | }; | |||
|
384 | ||||
|
385 | bezierCurveTo(this, cp1, cp2, p); | |||
|
386 | }; | |||
|
387 | ||||
|
388 | contextPrototype.arc = function(aX, aY, aRadius, | |||
|
389 | aStartAngle, aEndAngle, aClockwise) { | |||
|
390 | aRadius *= Z; | |||
|
391 | var arcType = aClockwise ? 'at' : 'wa'; | |||
|
392 | ||||
|
393 | var xStart = aX + mc(aStartAngle) * aRadius - Z2; | |||
|
394 | var yStart = aY + ms(aStartAngle) * aRadius - Z2; | |||
|
395 | ||||
|
396 | var xEnd = aX + mc(aEndAngle) * aRadius - Z2; | |||
|
397 | var yEnd = aY + ms(aEndAngle) * aRadius - Z2; | |||
|
398 | ||||
|
399 | // IE won't render arches drawn counter clockwise if xStart == xEnd. | |||
|
400 | if (xStart == xEnd && !aClockwise) { | |||
|
401 | xStart += 0.125; // Offset xStart by 1/80 of a pixel. Use something | |||
|
402 | // that can be represented in binary | |||
|
403 | } | |||
|
404 | ||||
|
405 | var p = this.getCoords_(aX, aY); | |||
|
406 | var pStart = this.getCoords_(xStart, yStart); | |||
|
407 | var pEnd = this.getCoords_(xEnd, yEnd); | |||
|
408 | ||||
|
409 | this.currentPath_.push({type: arcType, | |||
|
410 | x: p.x, | |||
|
411 | y: p.y, | |||
|
412 | radius: aRadius, | |||
|
413 | xStart: pStart.x, | |||
|
414 | yStart: pStart.y, | |||
|
415 | xEnd: pEnd.x, | |||
|
416 | yEnd: pEnd.y}); | |||
|
417 | ||||
|
418 | }; | |||
|
419 | ||||
|
420 | contextPrototype.rect = function(aX, aY, aWidth, aHeight) { | |||
|
421 | this.moveTo(aX, aY); | |||
|
422 | this.lineTo(aX + aWidth, aY); | |||
|
423 | this.lineTo(aX + aWidth, aY + aHeight); | |||
|
424 | this.lineTo(aX, aY + aHeight); | |||
|
425 | this.closePath(); | |||
|
426 | }; | |||
|
427 | ||||
|
428 | contextPrototype.strokeRect = function(aX, aY, aWidth, aHeight) { | |||
|
429 | var oldPath = this.currentPath_; | |||
|
430 | this.beginPath(); | |||
|
431 | ||||
|
432 | this.moveTo(aX, aY); | |||
|
433 | this.lineTo(aX + aWidth, aY); | |||
|
434 | this.lineTo(aX + aWidth, aY + aHeight); | |||
|
435 | this.lineTo(aX, aY + aHeight); | |||
|
436 | this.closePath(); | |||
|
437 | this.stroke(); | |||
|
438 | ||||
|
439 | this.currentPath_ = oldPath; | |||
|
440 | }; | |||
|
441 | ||||
|
442 | contextPrototype.fillRect = function(aX, aY, aWidth, aHeight) { | |||
|
443 | var oldPath = this.currentPath_; | |||
|
444 | this.beginPath(); | |||
|
445 | ||||
|
446 | this.moveTo(aX, aY); | |||
|
447 | this.lineTo(aX + aWidth, aY); | |||
|
448 | this.lineTo(aX + aWidth, aY + aHeight); | |||
|
449 | this.lineTo(aX, aY + aHeight); | |||
|
450 | this.closePath(); | |||
|
451 | this.fill(); | |||
|
452 | ||||
|
453 | this.currentPath_ = oldPath; | |||
|
454 | }; | |||
|
455 | ||||
|
456 | contextPrototype.createLinearGradient = function(aX0, aY0, aX1, aY1) { | |||
|
457 | var gradient = new CanvasGradient_('gradient'); | |||
|
458 | gradient.x0_ = aX0; | |||
|
459 | gradient.y0_ = aY0; | |||
|
460 | gradient.x1_ = aX1; | |||
|
461 | gradient.y1_ = aY1; | |||
|
462 | return gradient; | |||
|
463 | }; | |||
|
464 | ||||
|
465 | contextPrototype.createRadialGradient = function(aX0, aY0, aR0, | |||
|
466 | aX1, aY1, aR1) { | |||
|
467 | var gradient = new CanvasGradient_('gradientradial'); | |||
|
468 | gradient.x0_ = aX0; | |||
|
469 | gradient.y0_ = aY0; | |||
|
470 | gradient.r0_ = aR0; | |||
|
471 | gradient.x1_ = aX1; | |||
|
472 | gradient.y1_ = aY1; | |||
|
473 | gradient.r1_ = aR1; | |||
|
474 | return gradient; | |||
|
475 | }; | |||
|
476 | ||||
|
477 | contextPrototype.drawImage = function(image, var_args) { | |||
|
478 | var dx, dy, dw, dh, sx, sy, sw, sh; | |||
|
479 | ||||
|
480 | // to find the original width we overide the width and height | |||
|
481 | var oldRuntimeWidth = image.runtimeStyle.width; | |||
|
482 | var oldRuntimeHeight = image.runtimeStyle.height; | |||
|
483 | image.runtimeStyle.width = 'auto'; | |||
|
484 | image.runtimeStyle.height = 'auto'; | |||
|
485 | ||||
|
486 | // get the original size | |||
|
487 | var w = image.width; | |||
|
488 | var h = image.height; | |||
|
489 | ||||
|
490 | // and remove overides | |||
|
491 | image.runtimeStyle.width = oldRuntimeWidth; | |||
|
492 | image.runtimeStyle.height = oldRuntimeHeight; | |||
|
493 | ||||
|
494 | if (arguments.length == 3) { | |||
|
495 | dx = arguments[1]; | |||
|
496 | dy = arguments[2]; | |||
|
497 | sx = sy = 0; | |||
|
498 | sw = dw = w; | |||
|
499 | sh = dh = h; | |||
|
500 | } else if (arguments.length == 5) { | |||
|
501 | dx = arguments[1]; | |||
|
502 | dy = arguments[2]; | |||
|
503 | dw = arguments[3]; | |||
|
504 | dh = arguments[4]; | |||
|
505 | sx = sy = 0; | |||
|
506 | sw = w; | |||
|
507 | sh = h; | |||
|
508 | } else if (arguments.length == 9) { | |||
|
509 | sx = arguments[1]; | |||
|
510 | sy = arguments[2]; | |||
|
511 | sw = arguments[3]; | |||
|
512 | sh = arguments[4]; | |||
|
513 | dx = arguments[5]; | |||
|
514 | dy = arguments[6]; | |||
|
515 | dw = arguments[7]; | |||
|
516 | dh = arguments[8]; | |||
|
517 | } else { | |||
|
518 | throw Error('Invalid number of arguments'); | |||
|
519 | } | |||
|
520 | ||||
|
521 | var d = this.getCoords_(dx, dy); | |||
|
522 | ||||
|
523 | var w2 = sw / 2; | |||
|
524 | var h2 = sh / 2; | |||
|
525 | ||||
|
526 | var vmlStr = []; | |||
|
527 | ||||
|
528 | var W = 10; | |||
|
529 | var H = 10; | |||
|
530 | ||||
|
531 | // For some reason that I've now forgotten, using divs didn't work | |||
|
532 | vmlStr.push(' <g_vml_:group', | |||
|
533 | ' coordsize="', Z * W, ',', Z * H, '"', | |||
|
534 | ' coordorigin="0,0"' , | |||
|
535 | ' style="width:', W, 'px;height:', H, 'px;position:absolute;'); | |||
|
536 | ||||
|
537 | // If filters are necessary (rotation exists), create them | |||
|
538 | // filters are bog-slow, so only create them if abbsolutely necessary | |||
|
539 | // The following check doesn't account for skews (which don't exist | |||
|
540 | // in the canvas spec (yet) anyway. | |||
|
541 | ||||
|
542 | if (this.m_[0][0] != 1 || this.m_[0][1]) { | |||
|
543 | var filter = []; | |||
|
544 | ||||
|
545 | // Note the 12/21 reversal | |||
|
546 | filter.push('M11=', this.m_[0][0], ',', | |||
|
547 | 'M12=', this.m_[1][0], ',', | |||
|
548 | 'M21=', this.m_[0][1], ',', | |||
|
549 | 'M22=', this.m_[1][1], ',', | |||
|
550 | 'Dx=', mr(d.x / Z), ',', | |||
|
551 | 'Dy=', mr(d.y / Z), ''); | |||
|
552 | ||||
|
553 | // Bounding box calculation (need to minimize displayed area so that | |||
|
554 | // filters don't waste time on unused pixels. | |||
|
555 | var max = d; | |||
|
556 | var c2 = this.getCoords_(dx + dw, dy); | |||
|
557 | var c3 = this.getCoords_(dx, dy + dh); | |||
|
558 | var c4 = this.getCoords_(dx + dw, dy + dh); | |||
|
559 | ||||
|
560 | max.x = m.max(max.x, c2.x, c3.x, c4.x); | |||
|
561 | max.y = m.max(max.y, c2.y, c3.y, c4.y); | |||
|
562 | ||||
|
563 | vmlStr.push('padding:0 ', mr(max.x / Z), 'px ', mr(max.y / Z), | |||
|
564 | 'px 0;filter:progid:DXImageTransform.Microsoft.Matrix(', | |||
|
565 | filter.join(''), ", sizingmethod='clip');") | |||
|
566 | } else { | |||
|
567 | vmlStr.push('top:', mr(d.y / Z), 'px;left:', mr(d.x / Z), 'px;'); | |||
|
568 | } | |||
|
569 | ||||
|
570 | vmlStr.push(' ">' , | |||
|
571 | '<g_vml_:image src="', image.src, '"', | |||
|
572 | ' style="width:', Z * dw, 'px;', | |||
|
573 | ' height:', Z * dh, 'px;"', | |||
|
574 | ' cropleft="', sx / w, '"', | |||
|
575 | ' croptop="', sy / h, '"', | |||
|
576 | ' cropright="', (w - sx - sw) / w, '"', | |||
|
577 | ' cropbottom="', (h - sy - sh) / h, '"', | |||
|
578 | ' />', | |||
|
579 | '</g_vml_:group>'); | |||
|
580 | ||||
|
581 | this.element_.insertAdjacentHTML('BeforeEnd', | |||
|
582 | vmlStr.join('')); | |||
|
583 | }; | |||
|
584 | ||||
|
585 | contextPrototype.stroke = function(aFill) { | |||
|
586 | var lineStr = []; | |||
|
587 | var lineOpen = false; | |||
|
588 | var a = processStyle(aFill ? this.fillStyle : this.strokeStyle); | |||
|
589 | var color = a.color; | |||
|
590 | var opacity = a.alpha * this.globalAlpha; | |||
|
591 | ||||
|
592 | var W = 10; | |||
|
593 | var H = 10; | |||
|
594 | ||||
|
595 | lineStr.push('<g_vml_:shape', | |||
|
596 | ' filled="', !!aFill, '"', | |||
|
597 | ' style="position:absolute;width:', W, 'px;height:', H, 'px;"', | |||
|
598 | ' coordorigin="0 0" coordsize="', Z * W, ' ', Z * H, '"', | |||
|
599 | ' stroked="', !aFill, '"', | |||
|
600 | ' path="'); | |||
|
601 | ||||
|
602 | var newSeq = false; | |||
|
603 | var min = {x: null, y: null}; | |||
|
604 | var max = {x: null, y: null}; | |||
|
605 | ||||
|
606 | for (var i = 0; i < this.currentPath_.length; i++) { | |||
|
607 | var p = this.currentPath_[i]; | |||
|
608 | var c; | |||
|
609 | ||||
|
610 | switch (p.type) { | |||
|
611 | case 'moveTo': | |||
|
612 | c = p; | |||
|
613 | lineStr.push(' m ', mr(p.x), ',', mr(p.y)); | |||
|
614 | break; | |||
|
615 | case 'lineTo': | |||
|
616 | lineStr.push(' l ', mr(p.x), ',', mr(p.y)); | |||
|
617 | break; | |||
|
618 | case 'close': | |||
|
619 | lineStr.push(' x '); | |||
|
620 | p = null; | |||
|
621 | break; | |||
|
622 | case 'bezierCurveTo': | |||
|
623 | lineStr.push(' c ', | |||
|
624 | mr(p.cp1x), ',', mr(p.cp1y), ',', | |||
|
625 | mr(p.cp2x), ',', mr(p.cp2y), ',', | |||
|
626 | mr(p.x), ',', mr(p.y)); | |||
|
627 | break; | |||
|
628 | case 'at': | |||
|
629 | case 'wa': | |||
|
630 | lineStr.push(' ', p.type, ' ', | |||
|
631 | mr(p.x - this.arcScaleX_ * p.radius), ',', | |||
|
632 | mr(p.y - this.arcScaleY_ * p.radius), ' ', | |||
|
633 | mr(p.x + this.arcScaleX_ * p.radius), ',', | |||
|
634 | mr(p.y + this.arcScaleY_ * p.radius), ' ', | |||
|
635 | mr(p.xStart), ',', mr(p.yStart), ' ', | |||
|
636 | mr(p.xEnd), ',', mr(p.yEnd)); | |||
|
637 | break; | |||
|
638 | } | |||
|
639 | ||||
|
640 | ||||
|
641 | // TODO: Following is broken for curves due to | |||
|
642 | // move to proper paths. | |||
|
643 | ||||
|
644 | // Figure out dimensions so we can do gradient fills | |||
|
645 | // properly | |||
|
646 | if (p) { | |||
|
647 | if (min.x == null || p.x < min.x) { | |||
|
648 | min.x = p.x; | |||
|
649 | } | |||
|
650 | if (max.x == null || p.x > max.x) { | |||
|
651 | max.x = p.x; | |||
|
652 | } | |||
|
653 | if (min.y == null || p.y < min.y) { | |||
|
654 | min.y = p.y; | |||
|
655 | } | |||
|
656 | if (max.y == null || p.y > max.y) { | |||
|
657 | max.y = p.y; | |||
|
658 | } | |||
|
659 | } | |||
|
660 | } | |||
|
661 | lineStr.push(' ">'); | |||
|
662 | ||||
|
663 | if (!aFill) { | |||
|
664 | var lineWidth = this.lineScale_ * this.lineWidth; | |||
|
665 | ||||
|
666 | // VML cannot correctly render a line if the width is less than 1px. | |||
|
667 | // In that case, we dilute the color to make the line look thinner. | |||
|
668 | if (lineWidth < 1) { | |||
|
669 | opacity *= lineWidth; | |||
|
670 | } | |||
|
671 | ||||
|
672 | lineStr.push( | |||
|
673 | '<g_vml_:stroke', | |||
|
674 | ' opacity="', opacity, '"', | |||
|
675 | ' joinstyle="', this.lineJoin, '"', | |||
|
676 | ' miterlimit="', this.miterLimit, '"', | |||
|
677 | ' endcap="', processLineCap(this.lineCap), '"', | |||
|
678 | ' weight="', lineWidth, 'px"', | |||
|
679 | ' color="', color, '" />' | |||
|
680 | ); | |||
|
681 | } else if (typeof this.fillStyle == 'object') { | |||
|
682 | var fillStyle = this.fillStyle; | |||
|
683 | var angle = 0; | |||
|
684 | var focus = {x: 0, y: 0}; | |||
|
685 | ||||
|
686 | // additional offset | |||
|
687 | var shift = 0; | |||
|
688 | // scale factor for offset | |||
|
689 | var expansion = 1; | |||
|
690 | ||||
|
691 | if (fillStyle.type_ == 'gradient') { | |||
|
692 | var x0 = fillStyle.x0_ / this.arcScaleX_; | |||
|
693 | var y0 = fillStyle.y0_ / this.arcScaleY_; | |||
|
694 | var x1 = fillStyle.x1_ / this.arcScaleX_; | |||
|
695 | var y1 = fillStyle.y1_ / this.arcScaleY_; | |||
|
696 | var p0 = this.getCoords_(x0, y0); | |||
|
697 | var p1 = this.getCoords_(x1, y1); | |||
|
698 | var dx = p1.x - p0.x; | |||
|
699 | var dy = p1.y - p0.y; | |||
|
700 | angle = Math.atan2(dx, dy) * 180 / Math.PI; | |||
|
701 | ||||
|
702 | // The angle should be a non-negative number. | |||
|
703 | if (angle < 0) { | |||
|
704 | angle += 360; | |||
|
705 | } | |||
|
706 | ||||
|
707 | // Very small angles produce an unexpected result because they are | |||
|
708 | // converted to a scientific notation string. | |||
|
709 | if (angle < 1e-6) { | |||
|
710 | angle = 0; | |||
|
711 | } | |||
|
712 | } else { | |||
|
713 | var p0 = this.getCoords_(fillStyle.x0_, fillStyle.y0_); | |||
|
714 | var width = max.x - min.x; | |||
|
715 | var height = max.y - min.y; | |||
|
716 | focus = { | |||
|
717 | x: (p0.x - min.x) / width, | |||
|
718 | y: (p0.y - min.y) / height | |||
|
719 | }; | |||
|
720 | ||||
|
721 | width /= this.arcScaleX_ * Z; | |||
|
722 | height /= this.arcScaleY_ * Z; | |||
|
723 | var dimension = m.max(width, height); | |||
|
724 | shift = 2 * fillStyle.r0_ / dimension; | |||
|
725 | expansion = 2 * fillStyle.r1_ / dimension - shift; | |||
|
726 | } | |||
|
727 | ||||
|
728 | // We need to sort the color stops in ascending order by offset, | |||
|
729 | // otherwise IE won't interpret it correctly. | |||
|
730 | var stops = fillStyle.colors_; | |||
|
731 | stops.sort(function(cs1, cs2) { | |||
|
732 | return cs1.offset - cs2.offset; | |||
|
733 | }); | |||
|
734 | ||||
|
735 | var length = stops.length; | |||
|
736 | var color1 = stops[0].color; | |||
|
737 | var color2 = stops[length - 1].color; | |||
|
738 | var opacity1 = stops[0].alpha * this.globalAlpha; | |||
|
739 | var opacity2 = stops[length - 1].alpha * this.globalAlpha; | |||
|
740 | ||||
|
741 | var colors = []; | |||
|
742 | for (var i = 0; i < length; i++) { | |||
|
743 | var stop = stops[i]; | |||
|
744 | colors.push(stop.offset * expansion + shift + ' ' + stop.color); | |||
|
745 | } | |||
|
746 | ||||
|
747 | // When colors attribute is used, the meanings of opacity and o:opacity2 | |||
|
748 | // are reversed. | |||
|
749 | lineStr.push('<g_vml_:fill type="', fillStyle.type_, '"', | |||
|
750 | ' method="none" focus="100%"', | |||
|
751 | ' color="', color1, '"', | |||
|
752 | ' color2="', color2, '"', | |||
|
753 | ' colors="', colors.join(','), '"', | |||
|
754 | ' opacity="', opacity2, '"', | |||
|
755 | ' g_o_:opacity2="', opacity1, '"', | |||
|
756 | ' angle="', angle, '"', | |||
|
757 | ' focusposition="', focus.x, ',', focus.y, '" />'); | |||
|
758 | } else { | |||
|
759 | lineStr.push('<g_vml_:fill color="', color, '" opacity="', opacity, | |||
|
760 | '" />'); | |||
|
761 | } | |||
|
762 | ||||
|
763 | lineStr.push('</g_vml_:shape>'); | |||
|
764 | ||||
|
765 | this.element_.insertAdjacentHTML('beforeEnd', lineStr.join('')); | |||
|
766 | }; | |||
|
767 | ||||
|
768 | contextPrototype.fill = function() { | |||
|
769 | this.stroke(true); | |||
|
770 | } | |||
|
771 | ||||
|
772 | contextPrototype.closePath = function() { | |||
|
773 | this.currentPath_.push({type: 'close'}); | |||
|
774 | }; | |||
|
775 | ||||
|
776 | /** | |||
|
777 | * @private | |||
|
778 | */ | |||
|
779 | contextPrototype.getCoords_ = function(aX, aY) { | |||
|
780 | var m = this.m_; | |||
|
781 | return { | |||
|
782 | x: Z * (aX * m[0][0] + aY * m[1][0] + m[2][0]) - Z2, | |||
|
783 | y: Z * (aX * m[0][1] + aY * m[1][1] + m[2][1]) - Z2 | |||
|
784 | } | |||
|
785 | }; | |||
|
786 | ||||
|
787 | contextPrototype.save = function() { | |||
|
788 | var o = {}; | |||
|
789 | copyState(this, o); | |||
|
790 | this.aStack_.push(o); | |||
|
791 | this.mStack_.push(this.m_); | |||
|
792 | this.m_ = matrixMultiply(createMatrixIdentity(), this.m_); | |||
|
793 | }; | |||
|
794 | ||||
|
795 | contextPrototype.restore = function() { | |||
|
796 | copyState(this.aStack_.pop(), this); | |||
|
797 | this.m_ = this.mStack_.pop(); | |||
|
798 | }; | |||
|
799 | ||||
|
800 | function matrixIsFinite(m) { | |||
|
801 | for (var j = 0; j < 3; j++) { | |||
|
802 | for (var k = 0; k < 2; k++) { | |||
|
803 | if (!isFinite(m[j][k]) || isNaN(m[j][k])) { | |||
|
804 | return false; | |||
|
805 | } | |||
|
806 | } | |||
|
807 | } | |||
|
808 | return true; | |||
|
809 | } | |||
|
810 | ||||
|
811 | function setM(ctx, m, updateLineScale) { | |||
|
812 | if (!matrixIsFinite(m)) { | |||
|
813 | return; | |||
|
814 | } | |||
|
815 | ctx.m_ = m; | |||
|
816 | ||||
|
817 | if (updateLineScale) { | |||
|
818 | // Get the line scale. | |||
|
819 | // Determinant of this.m_ means how much the area is enlarged by the | |||
|
820 | // transformation. So its square root can be used as a scale factor | |||
|
821 | // for width. | |||
|
822 | var det = m[0][0] * m[1][1] - m[0][1] * m[1][0]; | |||
|
823 | ctx.lineScale_ = sqrt(abs(det)); | |||
|
824 | } | |||
|
825 | } | |||
|
826 | ||||
|
827 | contextPrototype.translate = function(aX, aY) { | |||
|
828 | var m1 = [ | |||
|
829 | [1, 0, 0], | |||
|
830 | [0, 1, 0], | |||
|
831 | [aX, aY, 1] | |||
|
832 | ]; | |||
|
833 | ||||
|
834 | setM(this, matrixMultiply(m1, this.m_), false); | |||
|
835 | }; | |||
|
836 | ||||
|
837 | contextPrototype.rotate = function(aRot) { | |||
|
838 | var c = mc(aRot); | |||
|
839 | var s = ms(aRot); | |||
|
840 | ||||
|
841 | var m1 = [ | |||
|
842 | [c, s, 0], | |||
|
843 | [-s, c, 0], | |||
|
844 | [0, 0, 1] | |||
|
845 | ]; | |||
|
846 | ||||
|
847 | setM(this, matrixMultiply(m1, this.m_), false); | |||
|
848 | }; | |||
|
849 | ||||
|
850 | contextPrototype.scale = function(aX, aY) { | |||
|
851 | this.arcScaleX_ *= aX; | |||
|
852 | this.arcScaleY_ *= aY; | |||
|
853 | var m1 = [ | |||
|
854 | [aX, 0, 0], | |||
|
855 | [0, aY, 0], | |||
|
856 | [0, 0, 1] | |||
|
857 | ]; | |||
|
858 | ||||
|
859 | setM(this, matrixMultiply(m1, this.m_), true); | |||
|
860 | }; | |||
|
861 | ||||
|
862 | contextPrototype.transform = function(m11, m12, m21, m22, dx, dy) { | |||
|
863 | var m1 = [ | |||
|
864 | [m11, m12, 0], | |||
|
865 | [m21, m22, 0], | |||
|
866 | [dx, dy, 1] | |||
|
867 | ]; | |||
|
868 | ||||
|
869 | setM(this, matrixMultiply(m1, this.m_), true); | |||
|
870 | }; | |||
|
871 | ||||
|
872 | contextPrototype.setTransform = function(m11, m12, m21, m22, dx, dy) { | |||
|
873 | var m = [ | |||
|
874 | [m11, m12, 0], | |||
|
875 | [m21, m22, 0], | |||
|
876 | [dx, dy, 1] | |||
|
877 | ]; | |||
|
878 | ||||
|
879 | setM(this, m, true); | |||
|
880 | }; | |||
|
881 | ||||
|
882 | /******** STUBS ********/ | |||
|
883 | contextPrototype.clip = function() { | |||
|
884 | // TODO: Implement | |||
|
885 | }; | |||
|
886 | ||||
|
887 | contextPrototype.arcTo = function() { | |||
|
888 | // TODO: Implement | |||
|
889 | }; | |||
|
890 | ||||
|
891 | contextPrototype.createPattern = function() { | |||
|
892 | return new CanvasPattern_; | |||
|
893 | }; | |||
|
894 | ||||
|
895 | // Gradient / Pattern Stubs | |||
|
896 | function CanvasGradient_(aType) { | |||
|
897 | this.type_ = aType; | |||
|
898 | this.x0_ = 0; | |||
|
899 | this.y0_ = 0; | |||
|
900 | this.r0_ = 0; | |||
|
901 | this.x1_ = 0; | |||
|
902 | this.y1_ = 0; | |||
|
903 | this.r1_ = 0; | |||
|
904 | this.colors_ = []; | |||
|
905 | } | |||
|
906 | ||||
|
907 | CanvasGradient_.prototype.addColorStop = function(aOffset, aColor) { | |||
|
908 | aColor = processStyle(aColor); | |||
|
909 | this.colors_.push({offset: aOffset, | |||
|
910 | color: aColor.color, | |||
|
911 | alpha: aColor.alpha}); | |||
|
912 | }; | |||
|
913 | ||||
|
914 | function CanvasPattern_() {} | |||
|
915 | ||||
|
916 | // set up externs | |||
|
917 | G_vmlCanvasManager = G_vmlCanvasManager_; | |||
|
918 | CanvasRenderingContext2D = CanvasRenderingContext2D_; | |||
|
919 | CanvasGradient = CanvasGradient_; | |||
|
920 | CanvasPattern = CanvasPattern_; | |||
|
921 | ||||
|
922 | })(); | |||
|
923 | ||||
|
924 | } // if |
General Comments 0
You need to be logged in to leave comments.
Login now