From 28040489d744e0c5d475a88663056c9040ed5320 Mon Sep 17 00:00:00 2001
From: Teng-Hui Zhu <ztenghui@google.com>
Date: Wed, 10 Nov 2010 15:31:59 -0800
Subject: Merge WebKit at r71558: Initial merge by git.

Change-Id: Ib345578fa29df7e4bc72b4f00e4a6fddcb754c4c
---
 WebCore/loader/cache/CachedImage.h | 105 +++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 WebCore/loader/cache/CachedImage.h

(limited to 'WebCore/loader/cache/CachedImage.h')

diff --git a/WebCore/loader/cache/CachedImage.h b/WebCore/loader/cache/CachedImage.h
new file mode 100644
index 0000000..313f3f3
--- /dev/null
+++ b/WebCore/loader/cache/CachedImage.h
@@ -0,0 +1,105 @@
+/*
+    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 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 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; }
+    
+    void checkNotify();
+    
+    virtual bool isImage() const { return true; }
+
+    void clear();
+    
+    bool stillNeedsLoad() const { return !errorOccurred() && status() == Unknown && !isLoading(); }
+    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>*);
+    virtual PurgePriority purgePriority() const { return PurgeFirst; }
+
+    RefPtr<Image> m_image;
+    Timer<CachedImage> m_decodedDataDeletionTimer;
+    bool m_httpStatusCodeErrorOccurred;
+};
+
+}
+
+#endif
-- 
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