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Backup work

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Julian Viereck 2011-06-21 23:33:11 +02:00
parent 819664f051
commit 986ef148c4
4 changed files with 343 additions and 2 deletions
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109
canvas_proxy.js Normal file
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function CanvasProxy(width, height) {
var stack = this.$stack = [];
// Expose only the minimum of the canvas object - there is no dom to do
// more here.
this.canvas = {
width: width,
height: height
}
var ctxFunc = [
"createRadialGradient",
"arcTo",
"arc",
"fillText",
"strokeText",
"drawImage",
"getImageData",
"putImageData",
"createImageData",
"drawWindow",
"save",
"restore",
"scale",
"rotate",
"translate",
"transform",
"setTransform",
"createLinearGradient",
"createPattern",
"clearRect",
"fillRect",
"strokeRect",
"beginPath",
"closePath",
"moveTo",
"lineTo",
"quadraticCurveTo",
"bezierCurveTo",
"rect",
"fill",
"stroke",
"clip",
"measureText",
"isPointInPath"
];
function buildFuncCall(name) {
return function() {
console.log("funcCall", name)
stack.push([name, Array.prototype.slice.call(arguments)]);
}
}
var name;
for (var i = 0; i < ctxFunc.length; i++) {
name = ctxFunc[i];
this[name] = buildFuncCall(name);
}
var ctxProp = {
// "canvas"
"globalAlpha": "1",
"globalCompositeOperation": "source-over",
"strokeStyle": "#000000",
"fillStyle": "#000000",
"lineWidth": "1",
"lineCap": "butt",
"lineJoin": "miter",
"miterLimit": "10",
"shadowOffsetX": "0",
"shadowOffsetY": "0",
"shadowBlur": "0",
"shadowColor": "rgba(0, 0, 0, 0)",
"font": "10px sans-serif",
"textAlign": "start",
"textBaseline": "alphabetic",
"mozTextStyle": "10px sans-serif",
"mozImageSmoothingEnabled": "true",
"DRAWWINDOW_DRAW_CARET": "1",
"DRAWWINDOW_DO_NOT_FLUSH": "2",
"DRAWWINDOW_DRAW_VIEW": "4",
"DRAWWINDOW_USE_WIDGET_LAYERS": "8",
"DRAWWINDOW_ASYNC_DECODE_IMAGES": "16",
}
function buildGetter(name) {
return function() {
return this["$" + name];
}
}
function buildSetter(name) {
return function(value) {
stack.push(["$", name, value]);
return this["$" + name] = value;
}
}
for (var name in ctxProp) {
this["$" + name] = ctxProp[name];
this.__defineGetter__(name, buildGetter(name));
this.__defineSetter__(name, buildSetter(name));
}
}
CanvasProxy.prototype.flush = function() {
postMessage("canvas_proxy_stack");
postMessage(JSON.stringify(this.$stack));
this.$stack.length = 0;
}