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/*
* Copyright (c) 2013, 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 ImageBufferSurface_h
#define ImageBufferSurface_h
#include "platform/PlatformExport.h"
#include "platform/geometry/IntSize.h"
#include "platform/graphics/GraphicsTypes3D.h"
#include "wtf/FastAllocBase.h"
#include "wtf/Noncopyable.h"
class SkCanvas;
class SkBitmap;
namespace blink { class WebLayer; }
namespace WebCore {
enum OpacityMode {
NonOpaque,
Opaque,
};
class PLATFORM_EXPORT ImageBufferSurface {
WTF_MAKE_NONCOPYABLE(ImageBufferSurface); WTF_MAKE_FAST_ALLOCATED;
public:
virtual ~ImageBufferSurface() { }
virtual SkCanvas* canvas() const = 0;
virtual const SkBitmap& bitmap() const;
virtual void willUse() { } // Called by ImageBuffer before reading or writing to the surface.
virtual bool isValid() const = 0;
virtual blink::WebLayer* layer() const { return 0; };
virtual bool isAccelerated() const { return false; }
virtual Platform3DObject getBackingTexture() const { return 0; }
OpacityMode opacityMode() const { return m_opacityMode; }
const IntSize& size() const { return m_size; }
protected:
void clear();
ImageBufferSurface(const IntSize& size, OpacityMode opacityMode)
: m_opacityMode(opacityMode)
, m_size(size)
{ }
private:
OpacityMode m_opacityMode;
IntSize m_size;
};
} // namespace WebCore
#endif
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