1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef Canvas2DImageBufferSurface_h 32 #define Canvas2DImageBufferSurface_h 33 34 #include "platform/graphics/Canvas2DLayerBridge.h" 35 #include "platform/graphics/ImageBufferSurface.h" 36 37 namespace blink { 38 39 // This shim necessary because ImageBufferSurfaces are not allowed to be RefCounted 40 class Canvas2DImageBufferSurface FINAL : public ImageBufferSurface { 41 public: 42 Canvas2DImageBufferSurface(const IntSize& size, OpacityMode opacityMode = NonOpaque, int msaaSampleCount = 1) 43 : ImageBufferSurface(size, opacityMode) 44 , m_layerBridge(Canvas2DLayerBridge::create(size, opacityMode, msaaSampleCount)) 45 { 46 clear(); 47 } 48 49 virtual ~Canvas2DImageBufferSurface() 50 { 51 if (m_layerBridge) 52 m_layerBridge->beginDestruction(); 53 } 54 55 // ImageBufferSurface implementation 56 virtual void finalizeFrame(const FloatRect &dirtyRect) OVERRIDE { m_layerBridge->finalizeFrame(dirtyRect); } 57 virtual void willAccessPixels() OVERRIDE { m_layerBridge->willAccessPixels(); } 58 virtual SkCanvas* canvas() const OVERRIDE { return m_layerBridge->canvas(); } 59 virtual bool isValid() const OVERRIDE { return m_layerBridge && m_layerBridge->checkSurfaceValid(); } 60 virtual bool restore() OVERRIDE { return m_layerBridge->restoreSurface(); } 61 virtual WebLayer* layer() const OVERRIDE { return m_layerBridge->layer(); } 62 virtual Platform3DObject getBackingTexture() const OVERRIDE { return m_layerBridge->getBackingTexture(); } 63 virtual bool isAccelerated() const OVERRIDE { return m_layerBridge->isAccelerated(); } 64 virtual void setIsHidden(bool hidden) OVERRIDE { m_layerBridge->setIsHidden(hidden); } 65 virtual void setImageBuffer(ImageBuffer* imageBuffer) OVERRIDE { m_layerBridge->setImageBuffer(imageBuffer); } 66 67 private: 68 RefPtr<Canvas2DLayerBridge> m_layerBridge; 69 }; 70 71 } // namespace blink 72 73 #endif 74