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Copyright (C) 1998 Lars Knoll (
Copyright (C) 2001 Dirk Mueller <>
Copyright (C) 2006 Samuel Weinig (
Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
#ifndef CachedImage_h
#define CachedImage_h
#include "CachedResource.h"
#include "ImageObserver.h"
#include "IntRect.h"
#include <wtf/Vector.h>
namespace WebCore {
class DocLoader;
class Cache;
class Image;
class CachedImage : public CachedResource, public ImageObserver {
friend class Cache;
CachedImage(DocLoader*, const String& url, bool forCache);
virtual ~CachedImage();
Image* image() const;
bool canRender() const { return !errorOccurred() && imageSize().width() > 0 && imageSize().height() > 0; }
// These are only used for SVGImage right now
void setImageContainerSize(const IntSize&);
bool usesImageContainerSize() const;
bool imageHasRelativeWidth() const;
bool imageHasRelativeHeight() const;
IntSize imageSize() const; // returns the size of the complete image
IntRect imageRect() const; // The size of the image.
virtual void ref(CachedResourceClient*);
virtual void allReferencesRemoved();
virtual void destroyDecodedData();
virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
virtual void error();
virtual bool schedule() const { return true; }
void checkNotify();
virtual bool isImage() const { return true; }
void clear();
bool stillNeedsLoad() const { return !m_errorOccurred && m_status == Unknown && m_loading == false; }
void load();
// ImageObserver
virtual void decodedSizeChanged(const Image* image, int delta);
virtual void didDraw(const Image*);
virtual bool shouldPauseAnimation(const Image*);
virtual void animationAdvanced(const Image*);
void createImage();
void notifyObservers();
Image* m_image;