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Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html Multipage: http://www.whatwg.org/C#2dcontext Complete: http://www.whatwg.org/c#2dcontext Comment: interface CanvasGradient { // opaque object void addColorStop(double offset, DOMString color); }; interface CanvasPattern { // opaque object }; interface TextMetrics { readonly attribute double width; }; interface ImageData { readonly attribute unsigned long width; readonly attribute unsigned long height; readonly attribute Uint8ClampedArray data; Posted from: 72.66.250.26 User agent: Mozilla/5.0 (Windows NT 6.0; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.186 Safari/535.1