The Tor Browser / file comparison
comparison: content/canvas/src/CanvasImageCache.h
content/canvas/src/CanvasImageCache.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef CANVASIMAGECACHE_H_ | |
| 7 #define CANVASIMAGECACHE_H_ | |
| 8 | |
| 9 #include "nsSize.h" | |
| 10 | |
| 11 namespace mozilla { | |
| 12 namespace dom { | |
| 13 class Element; | |
| 14 class HTMLCanvasElement; | |
| 15 } // namespace dom | |
| 16 namespace gfx { | |
| 17 class SourceSurface; | |
| 18 } // namespace gfx | |
| 19 } // namespace mozilla | |
| 20 class imgIRequest; | |
| 21 | |
| 22 namespace mozilla { | |
| 23 | |
| 24 class CanvasImageCache { | |
| 25 typedef mozilla::gfx::SourceSurface SourceSurface; | |
| 26 public: | |
| 27 /** | |
| 28 * Notify that image element aImage was (or is about to be) drawn to aCanvas | |
| 29 * using the first frame of aRequest's image. The data for the surface is | |
| 30 * in aSurface, and the image size is in aSize. | |
| 31 */ | |
| 32 static void NotifyDrawImage(dom::Element* aImage, | |
| 33 dom::HTMLCanvasElement* aCanvas, | |
| 34 imgIRequest* aRequest, | |
| 35 SourceSurface* aSource, | |
| 36 const gfxIntSize& aSize); | |
| 37 | |
| 38 /** | |
| 39 * Check whether aImage has recently been drawn into aCanvas. If we return | |
| 40 * a non-null surface, then the image was recently drawn into the canvas | |
| 41 * (with the same image request) and the returned surface contains the image | |
| 42 * data, and the image size will be returned in aSize. | |
| 43 */ | |
| 44 static SourceSurface* Lookup(dom::Element* aImage, | |
| 45 dom::HTMLCanvasElement* aCanvas, | |
| 46 gfxIntSize* aSize); | |
| 47 }; | |
| 48 | |
| 49 } | |
| 50 | |
| 51 #endif /* CANVASIMAGECACHE_H_ */ |
