/* * Copyright (C) 2010 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: * * * 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. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 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 Canvas2DLayerChromium_h #define Canvas2DLayerChromium_h #if USE(ACCELERATED_COMPOSITING) #include "CanvasLayerChromium.h" #include "ImageBuffer.h" #include "ManagedTexture.h" class SkCanvas; namespace WebCore { class GraphicsContext3D; class Region; // A layer containing an accelerated 2d canvas class Canvas2DLayerChromium : public CanvasLayerChromium { public: enum WillDrawCondition { WillDrawUnconditionally, WillDrawIfLayerNotDeferred, }; static PassRefPtr<Canvas2DLayerChromium> create(PassRefPtr<GraphicsContext3D>, const IntSize&, DeferralMode); virtual ~Canvas2DLayerChromium(); void setTextureId(unsigned); virtual void setNeedsDisplayRect(const FloatRect&) OVERRIDE; virtual bool drawsContent() const OVERRIDE; virtual void update(CCTextureUpdater&, const CCOcclusionTracker*) OVERRIDE; virtual void pushPropertiesTo(CCLayerImpl*) OVERRIDE; void setCanvas(SkCanvas*); void layerWillDraw(WillDrawCondition) const; private: Canvas2DLayerChromium(PassRefPtr<GraphicsContext3D>, const IntSize&, DeferralMode); bool drawingIntoImplThreadTexture() const; RefPtr<GraphicsContext3D> m_context; bool m_contextLost; IntSize m_size; unsigned m_backTextureId; // When m_useDoubleBuffering is true, the compositor will draw using a copy of the // canvas' backing texture. This option should be used with the compositor doesn't // synchronize its draws with the canvas updates. bool m_useDoubleBuffering; OwnPtr<ManagedTexture> m_frontTexture; SkCanvas* m_canvas; bool m_useRateLimiter; DeferralMode m_deferralMode; }; } #endif // USE(ACCELERATED_COMPOSITING) #endif