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/*
* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Image_h
#define Image_h
#include "Color.h"
#include "ColorSpace.h"
#include "GraphicsTypes.h"
#include "ImageSource.h"
#include "IntRect.h"
#include "PlatformString.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#if PLATFORM(MAC)
#ifdef __OBJC__
@class NSImage;
#else
class NSImage;
#endif
#endif
#if USE(CG)
struct CGContext;
#endif
#if PLATFORM(WIN)
typedef struct tagSIZE SIZE;
typedef SIZE* LPSIZE;
typedef struct HBITMAP__ *HBITMAP;
#endif
#if PLATFORM(QT)
#include <QPixmap>
#endif
#if PLATFORM(GTK)
typedef struct _GdkPixbuf GdkPixbuf;
#endif
namespace WebCore {
class FloatPoint;
class FloatRect;
class FloatSize;
class GraphicsContext;
class SharedBuffer;
class AffineTransform;
// This class gets notified when an image creates or destroys decoded frames and when it advances animation frames.
class ImageObserver;
class Image : public RefCounted<Image> {
friend class GeneratedImage;
friend class GraphicsContext;
public:
virtual ~Image();
static PassRefPtr<Image> create(ImageObserver* = 0);
static PassRefPtr<Image> loadPlatformResource(const char* name);
static bool supportsType(const String&);
virtual bool isBitmapImage() const { return false; }
// Derived classes should override this if they can assure that
// the image contains only resources from its own security origin.
virtual bool hasSingleSecurityOrigin() const { return false; }
static Image* nullImage();
bool isNull() const { return size().isEmpty(); }
// These are only used for SVGImage right now
virtual void setContainerSize(const IntSize&) { }
virtual bool usesContainerSize() const { return false; }
virtual bool hasRelativeWidth() const { return false; }
virtual bool hasRelativeHeight() const { return false; }
virtual IntSize size() const = 0;
IntRect rect() const { return IntRect(IntPoint(), size()); }
int width() const { return size().width(); }
int height() const { return size().height(); }
virtual bool getHotSpot(IntPoint&) const { return false; }
bool setData(PassRefPtr<SharedBuffer> data, bool allDataReceived);
virtual bool dataChanged(bool /*allDataReceived*/) { return false; }
virtual String filenameExtension() const { return String(); } // null string if unknown
virtual void destroyDecodedData(bool destroyAll = true) = 0;
virtual unsigned decodedSize() const = 0;
SharedBuffer* data() { return m_data.get(); }
// Animation begins whenever someone draws the image, so startAnimation() is not normally called.
// It will automatically pause once all observers no longer want to render the image anywhere.
virtual void startAnimation(bool /*catchUpIfNecessary*/ = true) { }
virtual void stopAnimation() {}
virtual void resetAnimation() {}
// Typically the CachedImage that owns us.
ImageObserver* imageObserver() const { return m_imageObserver; }
enum TileRule { StretchTile, RoundTile, RepeatTile };
virtual NativeImagePtr nativeImageForCurrentFrame() { return 0; }
#if PLATFORM(MAC)
// Accessors for native image formats.
virtual NSImage* getNSImage() { return 0; }
virtual CFDataRef getTIFFRepresentation() { return 0; }
#endif
#if USE(CG)
virtual CGImageRef getCGImageRef() { return 0; }
virtual CGImageRef getFirstCGImageRefOfSize(const IntSize&) { return 0; }
#endif
#if PLATFORM(WIN)
virtual bool getHBITMAP(HBITMAP) { return false; }
virtual bool getHBITMAPOfSize(HBITMAP, LPSIZE) { return false; }
#endif
#if PLATFORM(ANDROID)
virtual void setURL(const String& str) {}
#endif
#if PLATFORM(GTK)
virtual GdkPixbuf* getGdkPixbuf() { return 0; }
static PassRefPtr<Image> loadPlatformThemeIcon(const char* name, int size);
#endif
virtual void drawPattern(GraphicsContext*, const FloatRect& srcRect, const AffineTransform& patternTransform,
const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator, const FloatRect& destRect);
protected:
Image(ImageObserver* = 0);
static void fillWithSolidColor(GraphicsContext*, const FloatRect& dstRect, const Color&, ColorSpace styleColorSpace, CompositeOperator);
// The ColorSpace parameter will only be used for untagged images.
#if PLATFORM(WIN)
virtual void drawFrameMatchingSourceSize(GraphicsContext*, const FloatRect& dstRect, const IntSize& srcSize, ColorSpace styleColorSpace, CompositeOperator) { }
#endif
virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator) = 0;
void drawTiled(GraphicsContext*, const FloatRect& dstRect, const FloatPoint& srcPoint, const FloatSize& tileSize, ColorSpace styleColorSpace, CompositeOperator);
void drawTiled(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, TileRule hRule, TileRule vRule, ColorSpace styleColorSpace, CompositeOperator);
// Supporting tiled drawing
virtual bool mayFillWithSolidColor() { return false; }
virtual Color solidColor() const { return Color(); }
private:
RefPtr<SharedBuffer> m_data; // The encoded raw data for the image.
ImageObserver* m_imageObserver;
};
}
#endif
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