User:Roc/WorkerCanvasProposal - Revision history

Roc at 21:47, 22 October 2013

2013-10-22T21:47:49Z

← Older revision		Revision as of 21:47, 22 October 2013
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	WorkerCanvas implements Transferable;		WorkerCanvas implements Transferable;
			ImageBitmap implements Transferable;

	partial interface HTMLCanvasElement {		partial interface HTMLCanvasElement {
	WorkerCanvas transferControlToWorker();		WorkerCanvas transferControlToWorker();
	};

	~~partial interface HTMLImageElement {~~
	~~attribute (Blob or ImageBitmap)? srcObject;~~
	};		};

	partial interface ImageBitmap {		partial interface ImageBitmap {
			void transferToCanvas((HTMLCanvasElement or WorkerCanvas) canvas);
	void close();		void close();
	};		};
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	== Spec changes ==		== Spec changes ==

	~~Structured clone~~ of ImageBitmaps has to be defined~~; since they're immutable, it's straightforward~~. ~~The implementation can share~~ the ~~underlying buffer data across threads~~. An ImageBitmap ~~can~~ also ~~be implemented as~~ the ~~result of deferred rendering of a list of drawing commands~~.		Transferring of ImageBitmaps has to be defined. It should neuter the ImageBitmap in the sending thread. ImageBitmap.close also neuters the ImageBitmap. Neutering should set the ImageBitmap's width and height to 0.

	transferControlToWorker behaves like transferControlToProxy in the current WHATWG spec. WorkerCanvas is Transferable, but transfer fails if transferred other than from the main thread to a worker. All its methods throw if not called on a worker, or if it's neutered.		HTMLCanvasElement.transferControlToWorker behaves like transferControlToProxy in the current WHATWG spec. WorkerCanvas is Transferable, but transfer fails if transferred other than from the main thread to a worker. All its methods throw if not called on a worker, or if it's neutered.

	~~HTMLImageElement.srcObject behaves like HTMLMediaElement~~.~~srcObject: if non-null, it takes precedence over~~ the ~~"src" attribute and renders~~ the contents of the ~~Blob (as a decoded image) or~~ the ImageBitmap.		ImageBitmap.transferToCanvas replaces the canvas contents with the contents of the ImageBitmap, setting the canvas size to the ImageBitmap's size.

Roc: /* WebIDL */

2013-10-21T04:52:07Z

WebIDL

← Older revision		Revision as of 04:52, 21 October 2013
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	attribute (Blob or ImageBitmap)? srcObject;		attribute (Blob or ImageBitmap)? srcObject;
	};		};

	partial interface ImageBitmap {		partial interface ImageBitmap {
	void close();		void close();

Roc: /* WebIDL */

2013-10-21T04:50:20Z

WebIDL

← Older revision		Revision as of 04:50, 21 October 2013
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	partial interface HTMLImageElement {		partial interface HTMLImageElement {
	attribute (Blob or ImageBitmap)? srcObject;		attribute (Blob or ImageBitmap)? srcObject;
			};

			partial interface ImageBitmap {
			void close();
	};		};

Roc: /* Spec changes */

2013-10-18T01:24:36Z

Spec changes

← Older revision		Revision as of 01:24, 18 October 2013
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	Structured clone of ImageBitmaps has to be defined; since they're immutable, it's straightforward. The implementation can share the underlying buffer data across threads. An ImageBitmap can also be implemented as the result of deferred rendering of a list of drawing commands.		Structured clone of ImageBitmaps has to be defined; since they're immutable, it's straightforward. The implementation can share the underlying buffer data across threads. An ImageBitmap can also be implemented as the result of deferred rendering of a list of drawing commands.

	transferControlToWorker behaves like transferControlToProxy in the current WHATWG spec. ~~It's transferable~~, but transfer fails if transferred other than from the main thread to a worker. All its methods throw if not called on a worker, or if it's neutered.		transferControlToWorker behaves like transferControlToProxy in the current WHATWG spec. WorkerCanvas is Transferable, but transfer fails if transferred other than from the main thread to a worker. All its methods throw if not called on a worker, or if it's neutered.

	HTMLImageElement.srcObject behaves like HTMLMediaElement.srcObject: if non-null, it takes precedence over the "src" attribute and renders the contents of the Blob (as a decoded image) or the ImageBitmap.		HTMLImageElement.srcObject behaves like HTMLMediaElement.srcObject: if non-null, it takes precedence over the "src" attribute and renders the contents of the Blob (as a decoded image) or the ImageBitmap.

Roc: /* WebIDL */

2013-10-18T01:23:16Z

WebIDL

← Older revision		Revision as of 01:23, 18 October 2013
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	[Constructor(unsigned long width, unsigned long height)]		[Constructor(unsigned long width, unsigned long height)]
	interface WorkerCanvas {		interface WorkerCanvas {
	~~readonly~~ attribute unsigned long width;		attribute unsigned long width;
	~~readonly~~ attribute unsigned long height;		attribute unsigned long height;
	~~void resize(unsigned long width, unsigned long height)~~;
	RenderingContext? getContext(DOMString contextId, any... arguments);		RenderingContext? getContext(DOMString contextId, any... arguments);
	void toBlob(FileCallback? _callback, optional DOMString type, any... arguments);		void toBlob(FileCallback? _callback, optional DOMString type, any... arguments);

Roc: /* WebIDL */

2013-10-17T23:01:09Z

WebIDL

← Older revision		Revision as of 23:01, 17 October 2013
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	partial interface HTMLImageElement {		partial interface HTMLImageElement {
	attribute (Blob or ImageBitmap) srcObject;		attribute (Blob or ImageBitmap)? srcObject;
	};		};

Roc: /* Spec changes */

2013-10-17T23:00:48Z

Spec changes

← Older revision		Revision as of 23:00, 17 October 2013
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	transferControlToWorker behaves like transferControlToProxy in the current WHATWG spec. It's transferable, but transfer fails if transferred other than from the main thread to a worker. All its methods throw if not called on a worker, or if it's neutered.		transferControlToWorker behaves like transferControlToProxy in the current WHATWG spec. It's transferable, but transfer fails if transferred other than from the main thread to a worker. All its methods throw if not called on a worker, or if it's neutered.

			HTMLImageElement.srcObject behaves like HTMLMediaElement.srcObject: if non-null, it takes precedence over the "src" attribute and renders the contents of the Blob (as a decoded image) or the ImageBitmap.

Roc: /* WebIDL */

2013-10-17T22:59:11Z

WebIDL

← Older revision		Revision as of 22:59, 17 October 2013
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	WorkerCanvas transferControlToWorker();		WorkerCanvas transferControlToWorker();
	};		};

	partial interface HTMLImageElement {		partial interface HTMLImageElement {
	attribute (Blob or ImageBitmap) srcObject;		attribute (Blob or ImageBitmap) srcObject;

Roc: /* WebIDL */

2013-10-17T22:59:01Z

WebIDL

← Older revision		Revision as of 22:59, 17 October 2013
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	partial interface HTMLCanvasElement {		partial interface HTMLCanvasElement {
	WorkerCanvas transferControlToWorker();		WorkerCanvas transferControlToWorker();
			};

			partial interface HTMLImageElement {
			attribute (Blob or ImageBitmap) srcObject;
	};		};

Roc: /* Spec changes */

2013-10-17T22:58:18Z

Spec changes

← Older revision		Revision as of 22:58, 17 October 2013
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	Structured clone of ImageBitmaps has to be defined; since they're immutable, it's straightforward. The implementation can share the underlying buffer data across threads. An ImageBitmap can also be implemented as the result of deferred rendering of a list of drawing commands.		Structured clone of ImageBitmaps has to be defined; since they're immutable, it's straightforward. The implementation can share the underlying buffer data across threads. An ImageBitmap can also be implemented as the result of deferred rendering of a list of drawing commands.

			transferControlToWorker behaves like transferControlToProxy in the current WHATWG spec. It's transferable, but transfer fails if transferred other than from the main thread to a worker. All its methods throw if not called on a worker, or if it's neutered.