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/*
* Copyright (C) 2012 Research In Motion Limited. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef LayerCompositingThreadClient_h
#define LayerCompositingThreadClient_h
#if USE(ACCELERATED_COMPOSITING)
namespace WebCore {
class LayerCompositingThread;
class LayerCompositingThreadClient {
public:
virtual ~LayerCompositingThreadClient() { }
virtual void layerCompositingThreadDestroyed(LayerCompositingThread*) = 0;
virtual void layerVisibilityChanged(LayerCompositingThread*, bool visible) = 0;
virtual void uploadTexturesIfNeeded(LayerCompositingThread*) = 0;
virtual void drawTextures(LayerCompositingThread*, double scale, int positionLocation, int texCoordLocation) = 0;
virtual void deleteTextures(LayerCompositingThread*) = 0;
// Optional. Allows layers to serve as a mask for other layers
virtual void bindContentsTexture(LayerCompositingThread*) { }
// Optional. Allows layers to have uncached regions, typically drawn as checkerboard
virtual bool hasMissingTextures(const LayerCompositingThread*) const { return false; }
virtual void drawMissingTextures(LayerCompositingThread*, double scale, int positionLocation, int texCoordLocation) { }
// Unlike the other methods here, this one will be called on the WebKit thread
virtual void scheduleCommit() { }
};
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
#endif
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