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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 CoordinatedBackingStore_h
#define CoordinatedBackingStore_h
#if USE(COORDINATED_GRAPHICS)
#include "TextureMapper.h"
#include "TextureMapperBackingStore.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
namespace WebKit {
class ShareableSurface;
class CoordinatedBackingStoreTile : public WebCore::TextureMapperTile {
public:
explicit CoordinatedBackingStoreTile(float scale = 1)
: TextureMapperTile(WebCore::FloatRect())
, m_scale(scale)
, m_repaintCount(0)
{
}
inline float scale() const { return m_scale; }
inline void incrementRepaintCount() { ++m_repaintCount; }
inline int repaintCount() const { return m_repaintCount; }
void swapBuffers(WebCore::TextureMapper*);
void setBackBuffer(const WebCore::IntRect&, const WebCore::IntRect&, PassRefPtr<ShareableSurface> buffer, const WebCore::IntPoint&);
private:
RefPtr<ShareableSurface> m_surface;
WebCore::IntRect m_sourceRect;
WebCore::IntRect m_tileRect;
WebCore::IntPoint m_surfaceOffset;
float m_scale;
int m_repaintCount;
};
class CoordinatedBackingStore : public WebCore::TextureMapperBackingStore {
public:
void createTile(int, float);
void removeTile(int);
void removeAllTiles();
void updateTile(int, const WebCore::IntRect&, const WebCore::IntRect&, PassRefPtr<ShareableSurface>, const WebCore::IntPoint&);
static PassRefPtr<CoordinatedBackingStore> create() { return adoptRef(new CoordinatedBackingStore); }
void commitTileOperations(WebCore::TextureMapper*);
PassRefPtr<WebCore::BitmapTexture> texture() const;
void setSize(const WebCore::FloatSize&);
virtual void paintToTextureMapper(WebCore::TextureMapper*, const WebCore::FloatRect&, const WebCore::TransformationMatrix&, float, WebCore::BitmapTexture*);
private:
CoordinatedBackingStore()
: m_scale(1.)
{ }
void paintTilesToTextureMapper(Vector<WebCore::TextureMapperTile*>&, WebCore::TextureMapper*, const WebCore::TransformationMatrix&, float, WebCore::BitmapTexture*, const WebCore::FloatRect&);
HashMap<int, CoordinatedBackingStoreTile> m_tiles;
HashSet<int> m_tilesToRemove;
WebCore::FloatSize m_size;
float m_scale;
};
} // namespace WebKit
#endif
#endif // CoordinatedBackingStore_h
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