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/*
Copyright (C) 2010 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 Tile_h
#define Tile_h
#if ENABLE(TILED_BACKING_STORE)
#include "IntPoint.h"
#include "IntPointHash.h"
#include "IntRect.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#if PLATFORM(QT)
QT_BEGIN_NAMESPACE
class QPixmap;
class QRegion;
QT_END_NAMESPACE
#endif
namespace WebCore {
class GraphicsContext;
class TiledBackingStore;
class Tile : public RefCounted<Tile> {
public:
typedef IntPoint Coordinate;
static PassRefPtr<Tile> create(TiledBackingStore* backingStore, const Coordinate& tileCoordinate) { return adoptRef(new Tile(backingStore, tileCoordinate)); }
~Tile();
bool isDirty() const;
void invalidate(const IntRect&);
void updateBackBuffer();
void swapBackBufferToFront();
bool isReadyToPaint() const;
void paint(GraphicsContext*, const IntRect&);
const Tile::Coordinate& coordinate() const { return m_coordinate; }
const IntRect& rect() const { return m_rect; }
static void paintCheckerPattern(GraphicsContext*, const FloatRect&);
private:
Tile(TiledBackingStore*, const Coordinate&);
TiledBackingStore* m_backingStore;
Coordinate m_coordinate;
IntRect m_rect;
#if PLATFORM(QT)
QPixmap* m_buffer;
QPixmap* m_backBuffer;
QRegion* m_dirtyRegion;
#endif
};
}
#endif
#endif
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