The Tor Browser / file comparison
comparison: image/src/ClippedImage.h
image/src/ClippedImage.h
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:f767b0fdcd35 |
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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_CLIPPEDIMAGE_H_ | |
| 7 #define MOZILLA_IMAGELIB_CLIPPEDIMAGE_H_ | |
| 8 | |
| 9 #include "ImageWrapper.h" | |
| 10 #include "mozilla/gfx/2D.h" | |
| 11 #include "mozilla/Maybe.h" | |
| 12 #include "mozilla/RefPtr.h" | |
| 13 | |
| 14 namespace mozilla { | |
| 15 namespace image { | |
| 16 | |
| 17 class ClippedImageCachedSurface; | |
| 18 class DrawSingleTileCallback; | |
| 19 | |
| 20 /** | |
| 21 * An Image wrapper that clips an image against a rectangle. Right now only | |
| 22 * absolute coordinates in pixels are supported. | |
| 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 ClippedImage : public ImageWrapper | |
| 28 { | |
| 29 typedef mozilla::gfx::SourceSurface SourceSurface; | |
| 30 | |
| 31 public: | |
| 32 NS_DECL_ISUPPORTS | |
| 33 | |
| 34 virtual ~ClippedImage(); | |
| 35 | |
| 36 virtual nsIntRect FrameRect(uint32_t aWhichFrame) MOZ_OVERRIDE; | |
| 37 | |
| 38 NS_IMETHOD GetWidth(int32_t* aWidth) MOZ_OVERRIDE; | |
| 39 NS_IMETHOD GetHeight(int32_t* aHeight) MOZ_OVERRIDE; | |
| 40 NS_IMETHOD GetIntrinsicSize(nsSize* aSize) MOZ_OVERRIDE; | |
| 41 NS_IMETHOD GetIntrinsicRatio(nsSize* aRatio) MOZ_OVERRIDE; | |
| 42 NS_IMETHOD_(mozilla::TemporaryRef<SourceSurface>) | |
| 43 GetFrame(uint32_t aWhichFrame, uint32_t aFlags) MOZ_OVERRIDE; | |
| 44 NS_IMETHOD GetImageContainer(mozilla::layers::LayerManager* aManager, | |
| 45 mozilla::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 RequestDiscard() MOZ_OVERRIDE; | |
| 56 NS_IMETHOD_(Orientation) GetOrientation() MOZ_OVERRIDE; | |
| 57 | |
| 58 protected: | |
| 59 ClippedImage(Image* aImage, nsIntRect aClip); | |
| 60 | |
| 61 private: | |
| 62 mozilla::TemporaryRef<SourceSurface> | |
| 63 GetFrameInternal(const nsIntSize& aViewportSize, | |
| 64 const SVGImageContext* aSVGContext, | |
| 65 uint32_t aWhichFrame, | |
| 66 uint32_t aFlags); | |
| 67 bool ShouldClip(); | |
| 68 bool MustCreateSurface(gfxContext* aContext, | |
| 69 const gfxMatrix& aTransform, | |
| 70 const gfxRect& aSourceRect, | |
| 71 const nsIntRect& aSubimage, | |
| 72 const uint32_t aFlags) const; | |
| 73 gfxFloat ClampFactor(const gfxFloat aToClamp, const int aReference) const; | |
| 74 nsresult DrawSingleTile(gfxContext* aContext, | |
| 75 GraphicsFilter aFilter, | |
| 76 const gfxMatrix& aUserSpaceToImageSpace, | |
| 77 const gfxRect& aFill, | |
| 78 const nsIntRect& aSubimage, | |
| 79 const nsIntSize& aViewportSize, | |
| 80 const SVGImageContext* aSVGContext, | |
| 81 uint32_t aWhichFrame, | |
| 82 uint32_t aFlags); | |
| 83 | |
| 84 // If we are forced to draw a temporary surface, we cache it here. | |
| 85 nsAutoPtr<ClippedImageCachedSurface> mCachedSurface; | |
| 86 | |
| 87 nsIntRect mClip; // The region to clip to. | |
| 88 Maybe<bool> mShouldClip; // Memoized ShouldClip() if present. | |
| 89 | |
| 90 friend class DrawSingleTileCallback; | |
| 91 friend class ImageOps; | |
| 92 }; | |
| 93 | |
| 94 } // namespace image | |
| 95 } // namespace mozilla | |
| 96 | |
| 97 #endif // MOZILLA_IMAGELIB_CLIPPEDIMAGE_H_ |
