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/*
* 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 <public/WebContentLayerClient.h>
#include <wtf/Noncopyable.h>
#include <wtf/PassOwnPtr.h>
class SkCanvas;
namespace WebCore {
class GraphicsContext;
class IntRect;
class GraphicsContextPainter {
public:
virtual void paint(GraphicsContext&, const IntRect& clip) = 0;
protected:
virtual ~GraphicsContextPainter() { }
};
class OpaqueRectTrackingContentLayerDelegate : public WebKit::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; }
// WebKit::WebContentLayerClient implementation.
virtual void paintContents(SkCanvas*, const WebKit::WebRect& clip, bool canPaintLCDText, WebKit::WebFloatRect& opaque) OVERRIDE;
private:
GraphicsContextPainter* m_painter;
bool m_opaque;
};
}
#endif // OpaqueRectTrackingContentLayerDelegate_h
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