/* * Copyright (C) 2011 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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 APPLE AND ITS CONTRIBUTORS "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 APPLE OR ITS 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 SkPictureCanvasLayerTextureUpdater_h #define SkPictureCanvasLayerTextureUpdater_h #if USE(ACCELERATED_COMPOSITING) #include "CanvasLayerTextureUpdater.h" #include "SkPicture.h" class SkCanvas; namespace WebCore { class LayerPainterChromium; // This class records the contentRect into an SkPicture. Subclasses, provide // different implementations of tile updating based on this recorded picture. // The BitmapSkPictureCanvasLayerTextureUpdater and // FrameBufferSkPictureCanvasLayerTextureUpdater are two examples of such // implementations. class SkPictureCanvasLayerTextureUpdater : public CanvasLayerTextureUpdater { public: virtual ~SkPictureCanvasLayerTextureUpdater(); virtual void setOpaque(bool); protected: explicit SkPictureCanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium>); virtual void prepareToUpdate(const IntRect& contentRect, const IntSize& tileSize, int borderTexels, float contentsScale, IntRect& resultingOpaqueRect); void drawPicture(SkCanvas*); bool layerIsOpaque() const { return m_layerIsOpaque; } private: // Recording canvas. SkPicture m_picture; // True when it is known that all output pixels will be opaque. bool m_layerIsOpaque; }; } // namespace WebCore #endif // USE(ACCELERATED_COMPOSITING) #endif // SkPictureCanvasLayerTextureUpdater_h