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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 TextureMapperBackingStore_h
#define TextureMapperBackingStore_h
#if USE(ACCELERATED_COMPOSITING)
#include "FloatRect.h"
#include "Image.h"
#include "TextureMapper.h"
#include "TextureMapperPlatformLayer.h"
#include <wtf/RefPtr.h>
#if USE(GRAPHICS_SURFACE)
#include "GraphicsSurface.h"
#endif
namespace WebCore {
class GraphicsLayer;
class TextureMapperBackingStore : public TextureMapperPlatformLayer, public RefCounted<TextureMapperBackingStore> {
public:
virtual PassRefPtr<BitmapTexture> texture() const = 0;
virtual void paintToTextureMapper(TextureMapper*, const FloatRect&, const TransformationMatrix&, float, BitmapTexture*) = 0;
virtual ~TextureMapperBackingStore() { }
protected:
static unsigned calculateExposedTileEdges(const FloatRect& totalRect, const FloatRect& tileRect);
};
#if USE(GRAPHICS_SURFACE)
class TextureMapperSurfaceBackingStore : public TextureMapperBackingStore {
public:
static PassRefPtr<TextureMapperSurfaceBackingStore> create() { return adoptRef(new TextureMapperSurfaceBackingStore); }
void setGraphicsSurface(PassRefPtr<GraphicsSurface>);
void swapBuffersIfNeeded(uint32_t frontBuffer);
virtual PassRefPtr<BitmapTexture> texture() const;
virtual void paintToTextureMapper(TextureMapper*, const FloatRect&, const TransformationMatrix&, float, BitmapTexture*);
virtual ~TextureMapperSurfaceBackingStore() { }
private:
TextureMapperSurfaceBackingStore()
: TextureMapperBackingStore()
{ }
RefPtr<GraphicsSurface> m_graphicsSurface;
};
#endif
class TextureMapperTile {
public:
inline PassRefPtr<BitmapTexture> texture() const { return m_texture; }
inline FloatRect rect() const { return m_rect; }
inline void setTexture(BitmapTexture* texture) { m_texture = texture; }
inline void setRect(const FloatRect& rect) { m_rect = rect; }
void updateContents(TextureMapper*, Image*, const IntRect&, BitmapTexture::UpdateContentsFlag UpdateCanModifyOriginalImageData);
void updateContents(TextureMapper*, GraphicsLayer*, const IntRect&, BitmapTexture::UpdateContentsFlag UpdateCanModifyOriginalImageData);
virtual void paint(TextureMapper*, const TransformationMatrix&, float, BitmapTexture*, const unsigned exposedEdges);
virtual ~TextureMapperTile() { }
explicit TextureMapperTile(const FloatRect& rect)
: m_rect(rect)
{
}
private:
RefPtr<BitmapTexture> m_texture;
FloatRect m_rect;
};
class TextureMapperTiledBackingStore : public TextureMapperBackingStore {
public:
static PassRefPtr<TextureMapperTiledBackingStore> create() { return adoptRef(new TextureMapperTiledBackingStore); }
virtual ~TextureMapperTiledBackingStore() { }
virtual PassRefPtr<BitmapTexture> texture() const OVERRIDE;
virtual void paintToTextureMapper(TextureMapper*, const FloatRect&, const TransformationMatrix&, float, BitmapTexture*) OVERRIDE;
void updateContents(TextureMapper*, Image*, const FloatSize&, const IntRect&, BitmapTexture::UpdateContentsFlag);
void updateContents(TextureMapper*, GraphicsLayer*, const FloatSize&, const IntRect&, BitmapTexture::UpdateContentsFlag);
void setContentsToImage(Image* image) { m_image = image; }
void setShowDebugBorders(bool drawsDebugBorders) { m_drawsDebugBorders = drawsDebugBorders; }
void setDebugBorder(const Color&, float width);
private:
TextureMapperTiledBackingStore();
void createOrDestroyTilesIfNeeded(const FloatSize& backingStoreSize, const IntSize& tileSize, bool hasAlpha, IntRect& repaintRect);
void updateContentsFromImageIfNeeded(TextureMapper*);
inline FloatRect rect() const { return FloatRect(FloatPoint::zero(), m_size); }
Vector<TextureMapperTile> m_tiles;
FloatSize m_size;
RefPtr<Image> m_image;
bool m_drawsDebugBorders;
Color m_debugBorderColor;
float m_debugBorderWidth;
};
}
#endif
#endif // TextureMapperBackingStore_h
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