author | Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com> |
Mon, 30 Mar 2009 12:54:55 +0300 | |
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child 58 | 220a17280356 |
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 BitmapImage_h |
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#define BitmapImage_h |
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#include "Image.h" |
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#include "Color.h" |
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#include "IntSize.h" |
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#if PLATFORM(MAC) |
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#include <wtf/RetainPtr.h> |
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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(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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namespace WebCore { |
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struct FrameData; |
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} |
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// This complicated-looking declaration tells the FrameData Vector that it should copy without |
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// invoking our constructor or destructor. This allows us to have a vector even for a struct |
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// that's not copyable. |
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namespace WTF { |
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template<> class VectorTraits<WebCore::FrameData> : public SimpleClassVectorTraits {}; |
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} |
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namespace WebCore { |
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template <typename T> class Timer; |
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// ================================================ |
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// FrameData Class |
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// ================================================ |
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struct FrameData : Noncopyable { |
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FrameData() |
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: m_frame(0) |
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, m_duration(0) |
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, m_hasAlpha(true) |
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{ |
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} |
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~FrameData() |
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{ |
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clear(); |
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} |
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void clear(); |
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NativeImagePtr m_frame; |
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float m_duration; |
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bool m_hasAlpha; |
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}; |
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// ================================================= |
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// BitmapImage Class |
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// ================================================= |
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class BitmapImage : public Image { |
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friend class GraphicsContext; |
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public: |
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#if PLATFORM(QT) |
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BitmapImage(const QPixmap &pixmap, ImageObserver* = 0); |
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#endif |
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BitmapImage(ImageObserver* = 0); |
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~BitmapImage(); |
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virtual IntSize size() const; |
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virtual bool dataChanged(bool allDataReceived); |
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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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virtual unsigned decodedSize() const { return m_decodedSize; } |
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#if PLATFORM(MAC) |
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// Accessors for native image formats. |
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virtual NSImage* getNSImage(); |
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virtual CFDataRef getTIFFRepresentation(); |
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#endif |
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#if PLATFORM(CG) |
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virtual CGImageRef getCGImageRef(); |
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#endif |
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#if PLATFORM(QT) |
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virtual QPixmap* getPixmap() const; |
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#endif |
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#if PLATFORM(WIN) |
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virtual bool getHBITMAP(HBITMAP); |
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virtual bool getHBITMAPOfSize(HBITMAP, LPSIZE); |
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#endif |
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#if PLATFORM(SYMBIAN) |
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CMaskedBitmap* getMaskedBitmap(); |
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BitmapImage(CMaskedBitmap*); |
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void setMimeType(const String& mimeType); |
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const String& getMimeType(); |
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#endif |
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virtual NativeImagePtr nativeImageForCurrentFrame() { return frameAtIndex(currentFrame()); } |
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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); |
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#if PLATFORM(QT) || PLATFORM(SYMBIAN) |
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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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#endif |
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size_t currentFrame() const { return m_currentFrame; } |
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size_t frameCount(); |
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NativeImagePtr frameAtIndex(size_t); |
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float frameDurationAtIndex(size_t); |
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bool frameHasAlphaAtIndex(size_t); |
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// Decodes and caches a frame. Never accessed except internally. |
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void cacheFrame(size_t index); |
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// Called to invalidate all our cached data. If an image is loading incrementally, we only |
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// invalidate the last cached frame. |
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virtual void destroyDecodedData(bool incremental = false); |
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// Whether or not size is available yet. |
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bool isSizeAvailable(); |
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// Animation. |
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bool shouldAnimate(); |
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virtual void startAnimation(); |
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void advanceAnimation(Timer<BitmapImage>*); |
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// Handle platform-specific data |
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void initPlatformData(); |
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void invalidatePlatformData(); |
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// Checks to see if the image is a 1x1 solid color. We optimize these images and just do a fill rect instead. |
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void checkForSolidColor(); |
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virtual bool mayFillWithSolidColor() const { return m_isSolidColor && m_currentFrame == 0; } |
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virtual Color solidColor() const { return m_solidColor; } |
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ImageSource m_source; |
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mutable IntSize m_size; // The size to use for the overall image (will just be the size of the first image). |
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size_t m_currentFrame; // The index of the current frame of animation. |
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Vector<FrameData> m_frames; // An array of the cached frames of the animation. We have to ref frames to pin them in the cache. |
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Timer<BitmapImage>* m_frameTimer; |
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int m_repetitionCount; // How many total animation loops we should do. |
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int m_repetitionsComplete; // How many repetitions we've finished. |
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#if PLATFORM(MAC) |
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mutable RetainPtr<NSImage> m_nsImage; // A cached NSImage of frame 0. Only built lazily if someone actually queries for one. |
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mutable RetainPtr<CFDataRef> m_tiffRep; // Cached TIFF rep for frame 0. Only built lazily if someone queries for one. |
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#endif |
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#if PLATFORM(SYMBIAN) |
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mutable CMaskedBitmap* m_maskedBitmap; |
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ImageObserver* m_imageObserver; |
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#endif |
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Color m_solidColor; // If we're a 1x1 solid color, this is the color to use to fill. |
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bool m_isSolidColor; // Whether or not we are a 1x1 solid image. |
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bool m_animatingImageType; // Whether or not we're an image type that is capable of animating (GIF). |
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bool m_animationFinished; // Whether or not we've completed the entire animation. |
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bool m_allDataReceived; // Whether or not we've received all our data. |
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mutable bool m_haveSize; // Whether or not our |m_size| member variable has the final overall image size yet. |
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bool m_sizeAvailable; // Whether or not we can obtain the size of the first image frame yet from ImageIO. |
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unsigned m_decodedSize; // The current size of all decoded frames. |
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#if PLATFORM(QT) |
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QPixmap *m_pixmap; |
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#endif |
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}; |
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} |
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#endif |