2 Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
3 Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
4 Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
5 Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
17 You should have received a copy of the GNU Library General Public License
18 along with this library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA.
26 #include "CachedResource.h"
27 #include "ImageObserver.h"
30 #include <wtf/Vector.h>
34 class CachedResourceLoader;
37 class CachedImage : public CachedResource, public ImageObserver {
41 CachedImage(const String& url);
43 virtual ~CachedImage();
45 virtual void load(CachedResourceLoader* cachedResourceLoader);
49 bool canRender(float multiplier) const { return !errorOccurred() && !imageSize(multiplier).isEmpty(); }
51 // These are only used for SVGImage right now
52 void setImageContainerSize(const IntSize&);
53 bool usesImageContainerSize() const;
54 bool imageHasRelativeWidth() const;
55 bool imageHasRelativeHeight() const;
57 // Both of these methods take a zoom multiplier that can be used to increase the natural size of the image by the
59 IntSize imageSize(float multiplier) const; // returns the size of the complete image.
60 IntRect imageRect(float multiplier) const; // The size of the currently decoded portion of the image.
62 virtual void didAddClient(CachedResourceClient*);
64 virtual void allClientsRemoved();
65 virtual void destroyDecodedData();
67 virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
70 virtual void httpStatusCodeError() { m_httpStatusCodeErrorOccurred = true; }
71 bool httpStatusCodeErrorOccurred() const { return m_httpStatusCodeErrorOccurred; }
75 virtual bool isImage() const { return true; }
79 bool stillNeedsLoad() const { return !errorOccurred() && status() == Unknown && !isLoading(); }
83 virtual void decodedSizeChanged(const Image* image, int delta);
84 virtual void didDraw(const Image*);
86 virtual bool shouldPauseAnimation(const Image*);
87 virtual void animationAdvanced(const Image*);
88 virtual void changedInRect(const Image*, const IntRect&);
92 size_t maximumDecodedImageSize();
93 // If not null, changeRect is the changed part of the image.
94 void notifyObservers(const IntRect* changeRect = 0);
95 void decodedDataDeletionTimerFired(Timer<CachedImage>*);
97 RefPtr<Image> m_image;
98 Timer<CachedImage> m_decodedDataDeletionTimer;
99 bool m_httpStatusCodeErrorOccurred;