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/*
Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
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 LayerBackingStore_h
#define LayerBackingStore_h
#include "HashMap.h"
#include "ShareableBitmap.h"
#include "TextureMapper.h"
#include "TextureMapperBackingStore.h"
namespace WebKit {
class LayerBackingStoreTile : public WebCore::TextureMapperTile {
public:
LayerBackingStoreTile(float scale = 1)
: TextureMapperTile(WebCore::FloatRect())
, m_scale(scale)
{
}
inline float scale() const { return m_scale; }
void swapBuffers(WebCore::TextureMapper*);
void setBackBuffer(const WebCore::IntRect&, const WebCore::IntRect&, ShareableBitmap* buffer);
private:
RefPtr<ShareableBitmap> m_backBuffer;
WebCore::IntRect m_sourceRect;
WebCore::IntRect m_targetRect;
float m_scale;
};
class LayerBackingStore : public WebCore::TextureMapperBackingStore {
public:
void createTile(int, float);
void removeTile(int);
void updateTile(int, const WebCore::IntRect&, const WebCore::IntRect&, ShareableBitmap*);
static PassRefPtr<LayerBackingStore> create() { return adoptRef(new LayerBackingStore); }
void swapBuffers(WebCore::TextureMapper*);
PassRefPtr<WebCore::BitmapTexture> texture() const;
virtual void paintToTextureMapper(WebCore::TextureMapper*, const WebCore::FloatRect&, const WebCore::TransformationMatrix&, float, WebCore::BitmapTexture*);
private:
LayerBackingStore()
: m_scale(1.)
{ }
HashMap<int, LayerBackingStoreTile> m_tiles;
float m_scale;
};
}
#endif // LayerBackingStore_h
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