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ImageSource.h

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00001 /*
00002  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  * 1. Redistributions of source code must retain the above copyright
00008  *    notice, this list of conditions and the following disclaimer.
00009  * 2. Redistributions in binary form must reproduce the above copyright
00010  *    notice, this list of conditions and the following disclaimer in the
00011  *    documentation and/or other materials provided with the distribution.
00012  *
00013  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
00014  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00015  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00016  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
00017  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00018  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00019  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00020  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
00021  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00022  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00023  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
00024  */
00025 
00026 #ifndef ImageSource_h
00027 #define ImageSource_h
00028 
00029 #include <wtf/Noncopyable.h>
00030 #include <wtf/Vector.h>
00031 
00032 #if PLATFORM(WX)
00033 class wxBitmap;
00034 #elif PLATFORM(CG)
00035 typedef struct CGImageSource* CGImageSourceRef;
00036 typedef struct CGImage* CGImageRef;
00037 typedef const struct __CFData* CFDataRef;
00038 #elif PLATFORM(QT)
00039 #include <qglobal.h>
00040 QT_BEGIN_NAMESPACE
00041 class QPixmap;
00042 QT_END_NAMESPACE
00043 #elif PLATFORM(CAIRO)
00044 struct _cairo_surface;
00045 typedef struct _cairo_surface cairo_surface_t;
00046 #endif
00047 
00048 namespace WebCore {
00049 
00050 class IntSize;
00051 class SharedBuffer;
00052 
00053 #if PLATFORM(WX)
00054 class ImageDecoder;
00055 typedef ImageDecoder* NativeImageSourcePtr;
00056 typedef const Vector<char>* NativeBytePtr;
00057 typedef wxBitmap* NativeImagePtr;
00058 #elif PLATFORM(CG)
00059 typedef CGImageSourceRef NativeImageSourcePtr;
00060 typedef CGImageRef NativeImagePtr;
00061 #elif PLATFORM(QT)
00062 class ImageDecoderQt;
00063 typedef ImageDecoderQt* NativeImageSourcePtr;
00064 typedef QPixmap* NativeImagePtr;
00065 #else
00066 class ImageDecoder;
00067 typedef ImageDecoder* NativeImageSourcePtr;
00068 typedef cairo_surface_t* NativeImagePtr;
00069 #endif
00070 
00071 const int cAnimationLoopOnce = -1;
00072 const int cAnimationNone = -2;
00073 
00074 class ImageSource : Noncopyable {
00075 public:
00076     ImageSource();
00077     ~ImageSource();
00078 
00079     void clear();
00080 
00081     bool initialized() const;
00082     
00083     void setData(SharedBuffer* data, bool allDataReceived);
00084 
00085     bool isSizeAvailable();
00086     IntSize size() const;
00087     
00088     int repetitionCount();
00089     
00090     size_t frameCount() const;
00091     
00092     NativeImagePtr createFrameAtIndex(size_t);
00093     
00094     float frameDurationAtIndex(size_t);
00095     bool frameHasAlphaAtIndex(size_t); // Whether or not the frame actually used any alpha.
00096     bool frameIsCompleteAtIndex(size_t); // Whether or not the frame is completely decoded.
00097 
00098 private:
00099     NativeImageSourcePtr m_decoder;
00100 };
00101 
00102 }
00103 
00104 #endif

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