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/*
* Copyright 2012, 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 LayerGroup_h
#define LayerGroup_h
#include "TilePainter.h"
#include "Vector.h"
class SkCanvas;
class SkRegion;
namespace WebCore {
class BaseTile;
class DualTiledTexture;
class TexturesResult;
class LayerAndroid;
class LayerGroup : public TilePainter {
public:
LayerGroup();
virtual ~LayerGroup();
void initializeGroup(LayerAndroid* newLayer, const SkRegion& newLayerInval,
LayerAndroid* oldLayer);
void addLayer(LayerAndroid* layer);
void prepareGL(bool layerTilesDisabled);
bool drawGL(bool layerTilesDisabled);
void swapTiles();
bool isReady();
IntRect computePrepareArea();
void computeTexturesAmount(TexturesResult* result);
// TilePainter methods
virtual bool paint(BaseTile* tile, SkCanvas* canvas, unsigned int* pictureUsed);
virtual const TransformationMatrix* transform();
virtual float opacity();
private:
bool m_hasText;
DualTiledTexture* m_dualTiledTexture;
Vector<LayerAndroid*> m_layers;
};
} // namespace WebCore
#endif //#define LayerGroup_h
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