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| 1 /* | 1 /* |
| 2 * Copyright (C) 2004, 2006, 2009, 2010 Apple Inc. All rights reserved. | 2 * Copyright (C) 2004, 2006, 2009, 2010 Apple Inc. All rights reserved. |
| 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> | 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> |
| 4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. | 4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. |
| 5 * | 5 * |
| 6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
| 7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
| 8 * are met: | 8 * are met: |
| 9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
| 10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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| 61 public: | 61 public: |
| 62 virtual void canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect)
= 0; | 62 virtual void canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect)
= 0; |
| 63 virtual void canvasResized(HTMLCanvasElement*) = 0; | 63 virtual void canvasResized(HTMLCanvasElement*) = 0; |
| 64 #if !ENABLE(OILPAN) | 64 #if !ENABLE(OILPAN) |
| 65 virtual void canvasDestroyed(HTMLCanvasElement*) = 0; | 65 virtual void canvasDestroyed(HTMLCanvasElement*) = 0; |
| 66 #endif | 66 #endif |
| 67 | 67 |
| 68 virtual void trace(Visitor*) { } | 68 virtual void trace(Visitor*) { } |
| 69 }; | 69 }; |
| 70 | 70 |
| 71 class HTMLCanvasElement FINAL : public HTMLElement, public DocumentVisibilityObs
erver, public CanvasImageSource, public ImageBufferClient, public blink::WebThre
ad::TaskObserver { | 71 class HTMLCanvasElement final : public HTMLElement, public DocumentVisibilityObs
erver, public CanvasImageSource, public ImageBufferClient, public blink::WebThre
ad::TaskObserver { |
| 72 DEFINE_WRAPPERTYPEINFO(); | 72 DEFINE_WRAPPERTYPEINFO(); |
| 73 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLCanvasElement); | 73 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLCanvasElement); |
| 74 public: | 74 public: |
| 75 DECLARE_NODE_FACTORY(HTMLCanvasElement); | 75 DECLARE_NODE_FACTORY(HTMLCanvasElement); |
| 76 virtual ~HTMLCanvasElement(); | 76 virtual ~HTMLCanvasElement(); |
| 77 | 77 |
| 78 void addObserver(CanvasObserver*); | 78 void addObserver(CanvasObserver*); |
| 79 void removeObserver(CanvasObserver*); | 79 void removeObserver(CanvasObserver*); |
| 80 | 80 |
| 81 // Attributes and functions exposed to script | 81 // Attributes and functions exposed to script |
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| 132 AffineTransform baseTransform() const; | 132 AffineTransform baseTransform() const; |
| 133 | 133 |
| 134 bool is3D() const; | 134 bool is3D() const; |
| 135 | 135 |
| 136 bool hasImageBuffer() const { return m_imageBuffer; } | 136 bool hasImageBuffer() const { return m_imageBuffer; } |
| 137 bool hasValidImageBuffer() const; | 137 bool hasValidImageBuffer() const; |
| 138 void discardImageBuffer(); | 138 void discardImageBuffer(); |
| 139 | 139 |
| 140 bool shouldAccelerate(const IntSize&) const; | 140 bool shouldAccelerate(const IntSize&) const; |
| 141 | 141 |
| 142 virtual const AtomicString imageSourceURL() const OVERRIDE; | 142 virtual const AtomicString imageSourceURL() const override; |
| 143 | 143 |
| 144 virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE; | 144 virtual InsertionNotificationRequest insertedInto(ContainerNode*) override; |
| 145 | 145 |
| 146 // DocumentVisibilityObserver implementation | 146 // DocumentVisibilityObserver implementation |
| 147 virtual void didChangeVisibilityState(PageVisibilityState) OVERRIDE; | 147 virtual void didChangeVisibilityState(PageVisibilityState) override; |
| 148 | 148 |
| 149 // CanvasImageSource implementation | 149 // CanvasImageSource implementation |
| 150 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceIma
geStatus*) const OVERRIDE; | 150 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceIma
geStatus*) const override; |
| 151 virtual bool wouldTaintOrigin(SecurityOrigin*) const OVERRIDE; | 151 virtual bool wouldTaintOrigin(SecurityOrigin*) const override; |
| 152 virtual FloatSize sourceSize() const OVERRIDE; | 152 virtual FloatSize sourceSize() const override; |
| 153 | 153 |
| 154 // ImageBufferClient implementation | 154 // ImageBufferClient implementation |
| 155 virtual void notifySurfaceInvalid() OVERRIDE; | 155 virtual void notifySurfaceInvalid() override; |
| 156 virtual bool isDirty() OVERRIDE { return !m_dirtyRect.isEmpty(); } | 156 virtual bool isDirty() override { return !m_dirtyRect.isEmpty(); } |
| 157 virtual void didFinalizeFrame() OVERRIDE; | 157 virtual void didFinalizeFrame() override; |
| 158 | 158 |
| 159 // Implementation of WebThread::TaskObserver methods | 159 // Implementation of WebThread::TaskObserver methods |
| 160 virtual void willProcessTask() OVERRIDE; | 160 virtual void willProcessTask() override; |
| 161 virtual void didProcessTask() OVERRIDE; | 161 virtual void didProcessTask() override; |
| 162 | 162 |
| 163 virtual void trace(Visitor*) OVERRIDE; | 163 virtual void trace(Visitor*) override; |
| 164 | 164 |
| 165 protected: | 165 protected: |
| 166 virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE; | 166 virtual void didMoveToNewDocument(Document& oldDocument) override; |
| 167 | 167 |
| 168 private: | 168 private: |
| 169 explicit HTMLCanvasElement(Document&); | 169 explicit HTMLCanvasElement(Document&); |
| 170 | 170 |
| 171 virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERR
IDE; | 171 virtual void parseAttribute(const QualifiedName&, const AtomicString&) overr
ide; |
| 172 virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE; | 172 virtual RenderObject* createRenderer(RenderStyle*) override; |
| 173 virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; } | 173 virtual bool areAuthorShadowsAllowed() const override { return false; } |
| 174 | 174 |
| 175 void reset(); | 175 void reset(); |
| 176 | 176 |
| 177 PassOwnPtr<ImageBufferSurface> createImageBufferSurface(const IntSize& devic
eSize, int* msaaSampleCount); | 177 PassOwnPtr<ImageBufferSurface> createImageBufferSurface(const IntSize& devic
eSize, int* msaaSampleCount); |
| 178 void createImageBuffer(); | 178 void createImageBuffer(); |
| 179 void createImageBufferInternal(); | 179 void createImageBufferInternal(); |
| 180 void clearImageBuffer(); | 180 void clearImageBuffer(); |
| 181 | 181 |
| 182 void resetDirtyRect(); | 182 void resetDirtyRect(); |
| 183 | 183 |
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| 210 OwnPtr<ImageBuffer> m_imageBuffer; | 210 OwnPtr<ImageBuffer> m_imageBuffer; |
| 211 mutable OwnPtr<GraphicsContextStateSaver> m_contextStateSaver; | 211 mutable OwnPtr<GraphicsContextStateSaver> m_contextStateSaver; |
| 212 | 212 |
| 213 mutable RefPtr<Image> m_presentedImage; | 213 mutable RefPtr<Image> m_presentedImage; |
| 214 mutable RefPtr<Image> m_copiedImage; // FIXME: This is temporary for platfor
ms that have to copy the image buffer to render (and for CSSCanvasValue). | 214 mutable RefPtr<Image> m_copiedImage; // FIXME: This is temporary for platfor
ms that have to copy the image buffer to render (and for CSSCanvasValue). |
| 215 }; | 215 }; |
| 216 | 216 |
| 217 } // namespace blink | 217 } // namespace blink |
| 218 | 218 |
| 219 #endif // HTMLCanvasElement_h | 219 #endif // HTMLCanvasElement_h |
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