40 lines
938 B
JavaScript
40 lines
938 B
JavaScript
define("dojox/gfx/canvasext", [
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"./_base",
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"./canvas"],
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function(gfx, canvas){
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/*=====
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return {
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// summary:
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// A module that adds canvas-specific features to the gfx api. You should require this module
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// when your application specifically targets the HTML5 Canvas renderer.
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}
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=====*/
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var ext = gfx.canvasext = {};
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canvas.Surface.extend({
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getImageData: function(rect){
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// summary:
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// Returns the canvas pixel buffer.
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// rect: dojox/gfx.Rectangle
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// The canvas area.
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// flush pending renders queue, if any
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if("pendingRender" in this){
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this._render(true); // force render even if there're pendingImages
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}
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return this.rawNode.getContext("2d").getImageData(rect.x, rect.y, rect.width, rect.height);
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},
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getContext: function(){
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// summary:
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// Returns the surface CanvasRenderingContext2D.
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return this.rawNode.getContext("2d");
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}
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});
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return ext;
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});
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