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c936dd6c4e
This follows the spec by introducing a new "Placeholder" canvas context mode. The underlying offscreen canvas is kept accessible from the DOM element to allow for the drawImage() implementation to work with canvases that have transfered their control. Signed-off-by: webbeef <me@webbeef.org>
36 lines
1.2 KiB
Text
36 lines
1.2 KiB
Text
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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// https://html.spec.whatwg.org/multipage/#htmlcanvaselement
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typedef (CanvasRenderingContext2D
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or WebGLRenderingContext
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or WebGL2RenderingContext
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or GPUCanvasContext) RenderingContext;
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[Exposed=Window]
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interface HTMLCanvasElement : HTMLElement {
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[HTMLConstructor] constructor();
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[CEReactions, Pure, SetterThrows] attribute unsigned long width;
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[CEReactions, Pure, SetterThrows] attribute unsigned long height;
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[Throws]
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RenderingContext? getContext(DOMString contextId, optional any options = null);
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[Throws]
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USVString toDataURL(optional DOMString type = "image/png", optional any quality);
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[Throws]
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undefined toBlob(BlobCallback callback, optional DOMString type = "image/png", optional any quality);
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[Throws]
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OffscreenCanvas transferControlToOffscreen();
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};
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partial interface HTMLCanvasElement {
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[Pref="dom.canvas_capture.enabled"]
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MediaStream captureStream (optional double frameRequestRate);
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};
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callback BlobCallback = undefined(Blob? blob);
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