#ifndef CachedImage_h
#define CachedImage_h
#include "CachedResource.h"
#include "ImageObserver.h"
#include "IntRect.h"
#include "Timer.h"
#include <wtf/Vector.h>
namespace WebCore {
class CachedResourceLoader;
class MemoryCache;
class CachedImage : public CachedResource, public ImageObserver {
friend class MemoryCache;
public:
CachedImage(const String& url);
CachedImage(Image*);
virtual ~CachedImage();
virtual void load(CachedResourceLoader* cachedResourceLoader);
Image* image() const; bool hasImage() const { return m_image.get(); }
bool canRender(float multiplier) const { return !errorOccurred() && !imageSize(multiplier).isEmpty(); }
void setImageContainerSize(const IntSize&);
bool usesImageContainerSize() const;
bool imageHasRelativeWidth() const;
bool imageHasRelativeHeight() const;
IntSize imageSize(float multiplier) const; IntRect imageRect(float multiplier) const;
virtual void didAddClient(CachedResourceClient*);
virtual void allClientsRemoved();
virtual void destroyDecodedData();
virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
virtual void error(CachedResource::Status);
virtual bool shouldIgnoreHTTPStatusCodeErrors() const { return true; }
virtual bool isImage() const { return true; }
virtual bool isManual() const { return false; }
void clear();
bool stillNeedsLoad() const { return !errorOccurred() && status() == Unknown && !isLoading(); }
void load();
virtual void decodedSizeChanged(const Image* image, int delta);
virtual void didDraw(const Image*);
virtual bool shouldPauseAnimation(const Image*);
virtual void animationAdvanced(const Image*);
virtual void changedInRect(const Image*, const IntRect&);
virtual bool shouldDecodeFrame(const Image* image, const IntSize& frameSize);
#if ENABLE(DISK_IMAGE_CACHE)
virtual bool canUseDiskImageCache() const;
virtual void useDiskImageCache();
#endif
private:
void createImage();
size_t maximumDecodedImageSize();
void notifyObservers(const IntRect* changeRect = 0);
void decodedDataDeletionTimerFired(Timer<CachedImage>*);
virtual PurgePriority purgePriority() const { return PurgeFirst; }
void checkShouldPaintBrokenImage();
RefPtr<Image> m_image;
Timer<CachedImage> m_decodedDataDeletionTimer;
bool m_shouldPaintBrokenImage;
};
class CachedImageManual : public CachedImage
{
public:
CachedImageManual(const String&, Image*);
virtual ~CachedImageManual();
void addFakeClient() { addClient(m_fakeClient); }
void removeFakeClient() { removeClient(m_fakeClient); }
virtual bool isManual() const { return true; }
virtual bool mustRevalidateDueToCacheHeaders(CachePolicy) const;
private:
CachedResourceClient* m_fakeClient;
};
}
#endif