| /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| * You can obtain one at http://mozilla.org/MPL/2.0/. |
| * |
| * The origin of this IDL file is |
| * https://wiki.whatwg.org/wiki/OffscreenCanvas |
| * |
| * © Copyright 2004-2011 Apple Computer, Inc., Mozilla Foundation, and |
| * Opera Software ASA. You are granted a license to use, reproduce |
| * and create derivative works of this document. |
| */ |
| |
| // The new ImageBitmapRenderingContext is a canvas rendering context |
| // which only provides the functionality to replace the canvas's |
| // contents with the given ImageBitmap. Its context id (the first argument |
| // to getContext) is "bitmaprenderer". |
| [Exposed=(Window,Worker)] |
| interface ImageBitmapRenderingContext { |
| // Displays the given ImageBitmap in the canvas associated with this |
| // rendering context. Ownership of the ImageBitmap is transferred to |
| // the canvas. The caller may not use its reference to the ImageBitmap |
| // after making this call. (This semantic is crucial to enable prompt |
| // reclamation of expensive graphics resources, rather than relying on |
| // garbage collection to do so.) |
| // |
| // The ImageBitmap conceptually replaces the canvas's bitmap, but |
| // it does not change the canvas's intrinsic width or height. |
| // |
| // The ImageBitmap, when displayed, is clipped to the rectangle |
| // defined by the canvas's instrinsic width and height. Pixels that |
| // would be covered by the canvas's bitmap which are not covered by |
| // the supplied ImageBitmap are rendered transparent black. Any CSS |
| // styles affecting the display of the canvas are applied as usual. |
| undefined transferFromImageBitmap(ImageBitmap bitmap); |
| |
| // Deprecated version of transferFromImageBitmap |
| [Deprecated="ImageBitmapRenderingContext_TransferImageBitmap"] |
| undefined transferImageBitmap(ImageBitmap bitmap); |
| }; |