The Tor Browser / file comparison
comparison: image/src/FrozenImage.h
image/src/FrozenImage.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:afd106a7251e |
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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 MOZILLA_IMAGELIB_FROZENIMAGE_H_ | |
| 7 #define MOZILLA_IMAGELIB_FROZENIMAGE_H_ | |
| 8 | |
| 9 #include "ImageWrapper.h" | |
| 10 #include "mozilla/gfx/2D.h" | |
| 11 #include "mozilla/RefPtr.h" | |
| 12 | |
| 13 namespace mozilla { | |
| 14 namespace image { | |
| 15 | |
| 16 /** | |
| 17 * An Image wrapper that disables animation, freezing the image at its first | |
| 18 * frame. It does this using two strategies. If this is the only instance of the | |
| 19 * image, animation will never start, because IncrementAnimationConsumers is | |
| 20 * ignored. If there is another instance that is animated, that's still OK, | |
| 21 * because any imgIContainer method that is affected by animation gets its | |
| 22 * aWhichFrame argument set to FRAME_FIRST when it passes through FrozenImage. | |
| 23 * | |
| 24 * XXX(seth): There a known (performance, not correctness) issue with | |
| 25 * GetImageContainer. See the comments for that method for more information. | |
| 26 */ | |
| 27 class FrozenImage : public ImageWrapper | |
| 28 { | |
| 29 typedef mozilla::gfx::SourceSurface SourceSurface; | |
| 30 | |
| 31 public: | |
| 32 NS_DECL_ISUPPORTS | |
| 33 | |
| 34 virtual ~FrozenImage() { } | |
| 35 | |
| 36 virtual nsIntRect FrameRect(uint32_t aWhichFrame) MOZ_OVERRIDE; | |
| 37 virtual void IncrementAnimationConsumers() MOZ_OVERRIDE; | |
| 38 virtual void DecrementAnimationConsumers() MOZ_OVERRIDE; | |
| 39 | |
| 40 NS_IMETHOD GetAnimated(bool* aAnimated) MOZ_OVERRIDE; | |
| 41 NS_IMETHOD_(TemporaryRef<SourceSurface>) | |
| 42 GetFrame(uint32_t aWhichFrame, uint32_t aFlags) MOZ_OVERRIDE; | |
| 43 NS_IMETHOD_(bool) FrameIsOpaque(uint32_t aWhichFrame) MOZ_OVERRIDE; | |
| 44 NS_IMETHOD GetImageContainer(layers::LayerManager* aManager, | |
| 45 layers::ImageContainer** _retval) MOZ_OVERRIDE; | |
| 46 NS_IMETHOD Draw(gfxContext* aContext, | |
| 47 GraphicsFilter aFilter, | |
| 48 const gfxMatrix& aUserSpaceToImageSpace, | |
| 49 const gfxRect& aFill, | |
| 50 const nsIntRect& aSubimage, | |
| 51 const nsIntSize& aViewportSize, | |
| 52 const SVGImageContext* aSVGContext, | |
| 53 uint32_t aWhichFrame, | |
| 54 uint32_t aFlags) MOZ_OVERRIDE; | |
| 55 NS_IMETHOD_(void) RequestRefresh(const mozilla::TimeStamp& aTime) MOZ_OVERRIDE; | |
| 56 NS_IMETHOD GetAnimationMode(uint16_t* aAnimationMode) MOZ_OVERRIDE; | |
| 57 NS_IMETHOD SetAnimationMode(uint16_t aAnimationMode) MOZ_OVERRIDE; | |
| 58 NS_IMETHOD ResetAnimation() MOZ_OVERRIDE; | |
| 59 NS_IMETHOD_(float) GetFrameIndex(uint32_t aWhichFrame) MOZ_OVERRIDE; | |
| 60 | |
| 61 protected: | |
| 62 FrozenImage(Image* aImage) : ImageWrapper(aImage) { } | |
| 63 | |
| 64 private: | |
| 65 friend class ImageOps; | |
| 66 }; | |
| 67 | |
| 68 } // namespace image | |
| 69 } // namespace mozilla | |
| 70 | |
| 71 #endif // MOZILLA_IMAGELIB_FROZENIMAGE_H_ |
