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/*
* Copyright (C) 2011 Research In Motion Limited. 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 SVGImageCache_h
#define SVGImageCache_h
#if ENABLE(SVG)
#include "Image.h"
#include "IntSize.h"
#include "Timer.h"
#include <wtf/HashMap.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class CachedImage;
class CachedImageClient;
class ImageBuffer;
class SVGImage;
class RenderObject;
class SVGImageCache {
WTF_MAKE_FAST_ALLOCATED;
public:
~SVGImageCache();
static PassOwnPtr<SVGImageCache> create(SVGImage* image)
{
return adoptPtr(new SVGImageCache(image));
}
struct SizeAndScales {
SizeAndScales()
: zoom(1)
, scale(0)
{
}
SizeAndScales(const IntSize& newSize, float newZoom, float newScale)
: size(newSize)
, zoom(newZoom)
, scale(newScale)
{
}
SizeAndScales(const IntSize& newSize, float newZoom)
: size(newSize)
, zoom(newZoom)
, scale(0)
{
}
IntSize size;
float zoom;
float scale; // A scale of 0 indicates that the default scale should be used.
};
void removeClientFromCache(const CachedImageClient*);
void setRequestedSizeAndScales(const CachedImageClient*, const SizeAndScales&);
SizeAndScales requestedSizeAndScales(const CachedImageClient*) const;
Image* lookupOrCreateBitmapImageForRenderer(const RenderObject*);
void imageContentChanged();
private:
SVGImageCache(SVGImage*);
void redraw();
void redrawTimerFired(Timer<SVGImageCache>*);
struct ImageData {
ImageData()
: imageNeedsUpdate(false)
, buffer(0)
{
}
ImageData(ImageBuffer* newBuffer, PassRefPtr<Image> newImage, const SizeAndScales& newSizeAndScales)
: imageNeedsUpdate(false)
, sizeAndScales(newSizeAndScales)
, buffer(newBuffer)
, image(newImage)
{
}
bool imageNeedsUpdate;
SizeAndScales sizeAndScales;
ImageBuffer* buffer;
RefPtr<Image> image;
};
typedef HashMap<const CachedImageClient*, SizeAndScales> SizeAndScalesMap;
typedef HashMap<const CachedImageClient*, ImageData> ImageDataMap;
SVGImage* m_svgImage;
SizeAndScalesMap m_sizeAndScalesMap;
ImageDataMap m_imageDataMap;
Timer<SVGImageCache> m_redrawTimer;
};
} // namespace WebCore
#endif // ENABLE(SVG)
#endif // SVGImageCache_h
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