/* * Copyright (C) 2012 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 INC. 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 INC. 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 OpaqueRectTrackingContentLayerDelegate_h #define OpaqueRectTrackingContentLayerDelegate_h #include "platform/PlatformExport.h" #include "public/platform/WebContentLayerClient.h" #include "wtf/Noncopyable.h" #include "wtf/PassOwnPtr.h" class SkCanvas; namespace WebCore { class GraphicsContext; class IntRect; class PLATFORM_EXPORT GraphicsContextPainter { public: virtual void paint(GraphicsContext&, const IntRect& clip) = 0; protected: virtual ~GraphicsContextPainter() { } }; class PLATFORM_EXPORT OpaqueRectTrackingContentLayerDelegate : public blink::WebContentLayerClient { WTF_MAKE_NONCOPYABLE(OpaqueRectTrackingContentLayerDelegate); public: explicit OpaqueRectTrackingContentLayerDelegate(GraphicsContextPainter*); virtual ~OpaqueRectTrackingContentLayerDelegate(); // If we know that everything that will be painted through this delegate, then we don't bother // tracking opaqueness. void setOpaque(bool opaque) { m_opaque = opaque; } // blink::WebContentLayerClient implementation. virtual void paintContents(SkCanvas*, const blink::WebRect& clip, bool canPaintLCDText, blink::WebFloatRect& opaque) OVERRIDE; private: GraphicsContextPainter* m_painter; bool m_opaque; }; } #endif // OpaqueRectTrackingContentLayerDelegate_h