/* | |
Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) | |
Copyright (C) 2001 Dirk Mueller <mueller@kde.org> | |
Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) | |
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 | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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 "Timer.h" | |
#include <wtf/Vector.h> | |
namespace WebCore { | |
class DocLoader; | |
class Cache; | |
class CachedImage : public CachedResource, public ImageObserver { | |
friend class Cache; | |
public: | |
CachedImage(const String& url); | |
CachedImage(Image*); | |
virtual ~CachedImage(); | |
virtual void load(DocLoader* docLoader); | |
Image* image() const; | |
bool canRender(float multiplier) const { return !errorOccurred() && !imageSize(multiplier).isEmpty(); } | |
// These are only used for SVGImage right now | |
void setImageContainerSize(const IntSize&); | |
bool usesImageContainerSize() const; | |
bool imageHasRelativeWidth() const; | |
bool imageHasRelativeHeight() const; | |
// Both of these methods take a zoom multiplier that can be used to increase the natural size of the image by the | |
// zoom. | |
IntSize imageSize(float multiplier) const; // returns the size of the complete image. | |
IntRect imageRect(float multiplier) const; // The size of the currently decoded portion of the image. | |
virtual void didAddClient(CachedResourceClient*); | |
virtual void allClientsRemoved(); | |
virtual void destroyDecodedData(); | |
virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived); | |
virtual void error(); | |
virtual void httpStatusCodeError() { m_httpStatusCodeErrorOccurred = true; } | |
bool httpStatusCodeErrorOccurred() const { return m_httpStatusCodeErrorOccurred; } | |
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*); | |
virtual void changedInRect(const Image*, const IntRect&); | |
private: | |
void createImage(); | |
size_t maximumDecodedImageSize(); | |
// If not null, changeRect is the changed part of the image. | |
void notifyObservers(const IntRect* changeRect = 0); | |
void decodedDataDeletionTimerFired(Timer<CachedImage>*); | |
RefPtr<Image> m_image; | |
Timer<CachedImage> m_decodedDataDeletionTimer; | |
bool m_httpStatusCodeErrorOccurred; | |
}; | |
} | |
#endif |