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/*
* Copyright 2011, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef BaseRenderer_h
#define BaseRenderer_h
#if USE(ACCELERATED_COMPOSITING)
#include "Color.h"
#include "SkRect.h"
#include <wtf/text/StringHash.h>
class SkCanvas;
class SkDevice;
namespace WebCore {
class InstrumentedPlatformCanvas;
class TextureInfo;
class TilePainter;
class Tile;
struct TileRenderInfo {
// coordinates of the tile
int x;
int y;
// current scale factor
float scale;
// the expected size of the tile
SkSize tileSize;
// the painter object in charge of drawing our content
TilePainter* tilePainter;
// the base tile calling us
Tile* baseTile;
// info about the texture that we are to render into
TextureInfo* textureInfo;
bool isPureColor;
Color pureColor;
};
/**
*
*/
class BaseRenderer {
public:
enum RendererType { Raster, Ganesh };
BaseRenderer(RendererType type) : m_type(type) {}
virtual ~BaseRenderer() {}
void renderTiledContent(TileRenderInfo& renderInfo);
RendererType getType() { return m_type; }
static BaseRenderer* createRenderer();
static void swapRendererIfNeeded(BaseRenderer*& renderer);
static RendererType getCurrentRendererType() { return g_currentType; }
static void setCurrentRendererType(RendererType type) { g_currentType = type; }
protected:
virtual void setupCanvas(const TileRenderInfo& renderInfo, SkCanvas* canvas) = 0;
virtual void renderingComplete(const TileRenderInfo& renderInfo, SkCanvas* canvas) = 0;
void checkForPureColor(TileRenderInfo& renderInfo, InstrumentedPlatformCanvas& canvas);
// performs additional pure color check, renderInfo.isPureColor may already be set to true
virtual void deviceCheckForPureColor(TileRenderInfo& renderInfo, SkCanvas* canvas) = 0;
void drawTileInfo(SkCanvas* canvas, const TileRenderInfo& renderInfo,
int updateCount, double renderDuration);
private:
RendererType m_type;
static RendererType g_currentType;
};
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
#endif // BaseRenderer_h
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