author | Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com> |
Mon, 30 Mar 2009 12:54:55 +0300 | |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) |
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* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef Image_h |
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#define Image_h |
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#include "Color.h" |
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#include "GraphicsTypes.h" |
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#include "ImageSource.h" |
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#include <wtf/RefPtr.h> |
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#include <wtf/PassRefPtr.h> |
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#include "SharedBuffer.h" |
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#if PLATFORM(MAC) |
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#ifdef __OBJC__ |
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@class NSImage; |
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#else |
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class NSImage; |
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#endif |
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#endif |
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#if PLATFORM(CG) |
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struct CGContext; |
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#endif |
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#if PLATFORM(WIN) |
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typedef struct HBITMAP__ *HBITMAP; |
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#endif |
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#if PLATFORM(SYMBIAN) |
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class CMaskedBitmap; |
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#endif |
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#if PLATFORM(QT) |
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#include <QPixmap> |
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#endif |
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namespace WebCore { |
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class AffineTransform; |
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class FloatPoint; |
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class FloatRect; |
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class FloatSize; |
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class GraphicsContext; |
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class IntRect; |
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class IntSize; |
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class SharedBuffer; |
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class String; |
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// This class gets notified when an image creates or destroys decoded frames and when it advances animation frames. |
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class ImageObserver; |
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class Image : Noncopyable { |
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friend class GraphicsContext; |
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public: |
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Image(ImageObserver* = 0); |
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virtual ~Image(); |
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static Image* loadPlatformResource(const char* name); |
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static bool supportsType(const String&); |
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bool isNull() const; |
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virtual IntSize size() const = 0; |
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IntRect rect() const; |
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int width() const; |
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int height() const; |
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bool setData(PassRefPtr<SharedBuffer> data, bool allDataReceived); |
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virtual bool dataChanged(bool allDataReceived) { return false; } |
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// FIXME: PDF/SVG will be underreporting decoded sizes and will be unable to prune because these functions are not |
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// implemented yet for those image types. |
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virtual void destroyDecodedData(bool incremental = false) {}; |
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virtual unsigned decodedSize() const { return 0; } |
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SharedBuffer* data() { return m_data.get(); } |
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// It may look unusual that there is no start animation call as public API. This is because |
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// we start and stop animating lazily. Animation begins whenever someone draws the image. It will |
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// automatically pause once all observers no longer want to render the image anywhere. |
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virtual void stopAnimation() {} |
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virtual void resetAnimation() {} |
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// Typically the CachedImage that owns us. |
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ImageObserver* imageObserver() const { return m_imageObserver; } |
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enum TileRule { StretchTile, RoundTile, RepeatTile }; |
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#if PLATFORM(MAC) |
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// Accessors for native image formats. |
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virtual NSImage* getNSImage() { return 0; } |
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virtual CFDataRef getTIFFRepresentation() { return 0; } |
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#endif |
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#if PLATFORM(CG) |
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virtual CGImageRef getCGImageRef() { return 0; } |
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#endif |
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#if PLATFORM(QT) |
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virtual QPixmap* getPixmap() const { return 0; } |
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#endif |
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#if PLATFORM(SYMBIAN) |
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// Accessors for native image formats. |
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virtual CMaskedBitmap* getMaskedBitmap() { return 0; } |
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static Image* createImageFromVGContext(IntSize sz); |
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virtual void setMimeType(const String& /*mimeType*/){}; |
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virtual const String& getMimeType() { return String();}; |
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#endif |
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#if PLATFORM(WIN) |
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virtual bool getHBITMAP(HBITMAP) { return false; } |
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virtual bool getHBITMAPOfSize(HBITMAP, LPSIZE) { return false; } |
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#endif |
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protected: |
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static void fillWithSolidColor(GraphicsContext* ctxt, const FloatRect& dstRect, const Color& color, CompositeOperator op); |
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private: |
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#if PLATFORM(WIN) |
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virtual void drawFrameMatchingSourceSize(GraphicsContext*, const FloatRect& dstRect, const IntSize& srcSize, CompositeOperator) { } |
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#endif |
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virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator) = 0; |
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void drawTiled(GraphicsContext*, const FloatRect& dstRect, const FloatPoint& srcPoint, const FloatSize& tileSize, CompositeOperator); |
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void drawTiled(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, TileRule hRule, TileRule vRule, CompositeOperator); |
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// Supporting tiled drawing |
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virtual bool mayFillWithSolidColor() const { return false; } |
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virtual Color solidColor() const { return Color(); } |
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virtual NativeImagePtr nativeImageForCurrentFrame() { return 0; } |
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virtual void startAnimation() { } |
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virtual void drawPattern(GraphicsContext*, const FloatRect& srcRect, const AffineTransform& patternTransform, |
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const FloatPoint& phase, CompositeOperator, const FloatRect& destRect); |
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#if PLATFORM(CG) |
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// These are private to CG. Ideally they would be only in the .cpp file, but the callback requires access |
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// to the private function nativeImageForCurrentFrame() |
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static void drawPatternCallback(void* info, CGContext*); |
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#endif |
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protected: |
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RefPtr<SharedBuffer> m_data; // The encoded raw data for the image. |
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ImageObserver* m_imageObserver; |
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}; |
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} |
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#endif |