#ifndef CachedImage_h
#define CachedImage_h
#include "CachedResource.h"
#include "ImageObserver.h"
#include "IntRect.h"
#include "IntSizeHash.h"
#include "LayoutSize.h"
#include "SVGImageCache.h"
#include <wtf/HashMap.h>
#include <wtf/Vector.h>
namespace WebCore {
class CachedImageClient;
class CachedResourceLoader;
class FloatSize;
class MemoryCache;
class RenderElement;
class RenderObject;
class SecurityOrigin;
struct Length;
class CachedImage final : public CachedResource, public ImageObserver {
friend class MemoryCache;
public:
enum CacheBehaviorType { AutomaticallyCached, ManuallyCached };
CachedImage(const ResourceRequest&, SessionID);
CachedImage(Image*, SessionID);
CachedImage(const URL&, Image*, SessionID);
CachedImage(const URL&, Image*, CacheBehaviorType, SessionID);
virtual ~CachedImage();
Image* image(); Image* imageForRenderer(const RenderObject*); bool hasImage() const { return m_image.get(); }
bool currentFrameKnownToBeOpaque(const RenderElement*);
std::pair<Image*, float> brokenImage(float deviceScaleFactor) const; bool willPaintBrokenImage() const;
bool canRender(const RenderObject* renderer, float multiplier) { return !errorOccurred() && !imageSizeForRenderer(renderer, multiplier).isEmpty(); }
void setContainerSizeForRenderer(const CachedImageClient*, const LayoutSize&, float);
bool usesImageContainerSize() const;
bool imageHasRelativeWidth() const;
bool imageHasRelativeHeight() const;
virtual void addDataBuffer(ResourceBuffer*) override;
virtual void finishLoading(ResourceBuffer*) override;
enum SizeType {
UsedSize,
IntrinsicSize
};
LayoutSize imageSizeForRenderer(const RenderObject*, float multiplier, SizeType = UsedSize); void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio);
bool isManuallyCached() const { return m_isManuallyCached; }
virtual bool mustRevalidateDueToCacheHeaders(CachePolicy) const;
#if ENABLE(DISK_IMAGE_CACHE)
virtual bool canUseDiskImageCache() const override;
virtual void useDiskImageCache() override;
#endif
bool isOriginClean(SecurityOrigin*);
private:
virtual void load(CachedResourceLoader*, const ResourceLoaderOptions&) override;
void clear();
void createImage();
void clearImage();
void notifyObservers(const IntRect* changeRect = 0);
virtual PurgePriority purgePriority() const override { return PurgeFirst; }
void checkShouldPaintBrokenImage();
virtual void switchClientsToRevalidatedResource() override;
virtual bool mayTryReplaceEncodedData() const override { return true; }
virtual void didAddClient(CachedResourceClient*) override;
virtual void didRemoveClient(CachedResourceClient*) override;
virtual void allClientsRemoved() override;
virtual void destroyDecodedData() override;
virtual void addData(const char* data, unsigned length) override;
virtual void error(CachedResource::Status) override;
virtual void responseReceived(const ResourceResponse&) override;
virtual bool shouldIgnoreHTTPStatusCodeErrors() const override { return true; }
virtual bool stillNeedsLoad() const override { return !errorOccurred() && status() == Unknown && !isLoading(); }
virtual void decodedSizeChanged(const Image*, int delta) override;
virtual void didDraw(const Image*) override;
virtual void animationAdvanced(const Image*) override;
virtual void changedInRect(const Image*, const IntRect&) override;
void addIncrementalDataBuffer(ResourceBuffer*);
typedef std::pair<LayoutSize, float> SizeAndZoom;
typedef HashMap<const CachedImageClient*, SizeAndZoom> ContainerSizeRequests;
ContainerSizeRequests m_pendingContainerSizeRequests;
RefPtr<Image> m_image;
std::unique_ptr<SVGImageCache> m_svgImageCache;
unsigned char m_isManuallyCached : 1;
unsigned char m_shouldPaintBrokenImage : 1;
};
CACHED_RESOURCE_TYPE_CASTS(CachedImage, CachedResource, CachedResource::ImageResource)
}
#endif