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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef SKY_ENGINE_CORE_FRAME_IMAGEBITMAP_H_ | |
| 6 #define SKY_ENGINE_CORE_FRAME_IMAGEBITMAP_H_ | |
| 7 | |
| 8 #include "sky/engine/tonic/dart_wrappable.h" | |
| 9 #include "sky/engine/core/html/HTMLImageElement.h" | |
| 10 #include "sky/engine/platform/geometry/IntRect.h" | |
| 11 #include "sky/engine/platform/graphics/Image.h" | |
| 12 #include "sky/engine/platform/heap/Handle.h" | |
| 13 #include "sky/engine/wtf/PassRefPtr.h" | |
| 14 #include "sky/engine/wtf/RefCounted.h" | |
| 15 | |
| 16 namespace blink { | |
| 17 | |
| 18 class ImageData; | |
| 19 | |
| 20 class ImageBitmap final : public RefCounted<ImageBitmap>, public DartWrappable,
public ImageLoaderClient { | |
| 21 DEFINE_WRAPPERTYPEINFO(); | |
| 22 public: | |
| 23 static PassRefPtr<ImageBitmap> create(HTMLImageElement*, const IntRect&); | |
| 24 static PassRefPtr<ImageBitmap> create(ImageData*, const IntRect&); | |
| 25 static PassRefPtr<ImageBitmap> create(ImageBitmap*, const IntRect&); | |
| 26 static PassRefPtr<ImageBitmap> create(Image*, const IntRect&); | |
| 27 | |
| 28 PassRefPtr<Image> bitmapImage() const; | |
| 29 PassRefPtr<HTMLImageElement> imageElement() const { return m_imageElement; } | |
| 30 | |
| 31 IntRect bitmapRect() const { return m_bitmapRect; } | |
| 32 | |
| 33 int width() const { return m_cropRect.width(); } | |
| 34 int height() const { return m_cropRect.height(); } | |
| 35 IntSize size() const { return m_cropRect.size(); } | |
| 36 | |
| 37 virtual ~ImageBitmap(); | |
| 38 | |
| 39 private: | |
| 40 ImageBitmap(HTMLImageElement*, const IntRect&); | |
| 41 ImageBitmap(ImageData*, const IntRect&); | |
| 42 ImageBitmap(ImageBitmap*, const IntRect&); | |
| 43 ImageBitmap(Image*, const IntRect&); | |
| 44 | |
| 45 // ImageLoaderClient | |
| 46 virtual void notifyImageSourceChanged() override; | |
| 47 virtual bool requestsHighLiveResourceCachePriority() override { return true;
} | |
| 48 | |
| 49 // ImageBitmaps constructed from HTMLImageElements hold a reference to the H
TMLImageElement until | |
| 50 // the image source changes. | |
| 51 RefPtr<HTMLImageElement> m_imageElement; | |
| 52 RefPtr<Image> m_bitmap; | |
| 53 | |
| 54 IntRect m_bitmapRect; // The rect where the underlying Image should be place
d in reference to the ImageBitmap. | |
| 55 IntRect m_cropRect; | |
| 56 | |
| 57 // The offset by which the desired Image is stored internally. | |
| 58 // ImageBitmaps constructed from HTMLImageElements reference the entire Imag
eResource and may have a non-zero bitmap offset. | |
| 59 // ImageBitmaps not constructed from HTMLImageElements always pre-crop and s
tore the image at (0, 0). | |
| 60 IntPoint m_bitmapOffset; | |
| 61 | |
| 62 }; | |
| 63 | |
| 64 } // namespace blink | |
| 65 | |
| 66 #endif // SKY_ENGINE_CORE_FRAME_IMAGEBITMAP_H_ | |
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