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| 1 /* | |
| 2 * Copyright (C) 2012 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * | |
| 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
| 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #ifndef LazyDecodingPixelRef_h | |
| 27 #define LazyDecodingPixelRef_h | |
| 28 | |
| 29 #include "SkFlattenableBuffers.h" | |
| 30 #include "SkPixelRef.h" | |
| 31 #include "SkRect.h" | |
| 32 #include "SkSize.h" | |
| 33 #include "SkTypes.h" | |
| 34 #include "platform/PlatformInstrumentation.h" | |
| 35 #include "skia/ext/lazy_pixel_ref.h" | |
| 36 | |
| 37 #include "wtf/RefPtr.h" | |
| 38 | |
| 39 using skia::LazyPixelRef; | |
| 40 | |
| 41 class SkData; | |
| 42 | |
| 43 namespace WebCore { | |
| 44 | |
| 45 class ImageFrameGenerator; | |
| 46 class ScaledImageFragment; | |
| 47 | |
| 48 class LazyDecodingPixelRef : public LazyPixelRef { | |
| 49 public: | |
| 50 LazyDecodingPixelRef(PassRefPtr<ImageFrameGenerator>, size_t index); | |
| 51 virtual ~LazyDecodingPixelRef(); | |
| 52 | |
| 53 SK_DECLARE_UNFLATTENABLE_OBJECT() | |
| 54 | |
| 55 PassRefPtr<ImageFrameGenerator> frameGenerator() const { return m_frameGener
ator; } | |
| 56 size_t frameIndex() const { return m_frameIndex; } | |
| 57 | |
| 58 // Returns true if the image might already be decoded in the cache. | |
| 59 // Optimistic version of PrepareToDecode; requires less locking. | |
| 60 virtual bool MaybeDecoded(); | |
| 61 virtual bool PrepareToDecode(const LazyPixelRef::PrepareParams&); | |
| 62 virtual void Decode(); | |
| 63 | |
| 64 protected: | |
| 65 // SkPixelRef implementation. | |
| 66 virtual void* onLockPixels(SkColorTable**); | |
| 67 virtual void onUnlockPixels(); | |
| 68 virtual bool onLockPixelsAreWritable() const; | |
| 69 | |
| 70 virtual SkData* onRefEncodedData() SK_OVERRIDE; | |
| 71 | |
| 72 private: | |
| 73 RefPtr<ImageFrameGenerator> m_frameGenerator; | |
| 74 size_t m_frameIndex; | |
| 75 | |
| 76 const ScaledImageFragment* m_lockedImageResource; | |
| 77 PlatformInstrumentation::LazyPixelRefTracker m_objectTracker; | |
| 78 }; | |
| 79 | |
| 80 } // namespace WebCore | |
| 81 | |
| 82 #endif // LazyDecodingPixelRef_h_ | |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk