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/*
* Copyright (C) 2017 Apple 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.
*/
#pragma once
#if ENABLE(OFFSCREEN_CANVAS)
#include "CanvasRenderingContext.h"
namespace WebCore {
class ImageBufferPipe;
class OffscreenCanvas;
class PlaceholderRenderingContext final : public CanvasRenderingContext {
WTF_MAKE_ISO_ALLOCATED(PlaceholderRenderingContext);
public:
PlaceholderRenderingContext(CanvasBase&);
HTMLCanvasElement* canvas() const;
const RefPtr<ImageBufferPipe>& imageBufferPipe() const { return m_imageBufferPipe; }
private:
bool isPlaceholder() const final { return true; }
RefPtr<GraphicsLayerContentsDisplayDelegate> layerContentsDisplayDelegate() final;
bool isAccelerated() const final { return !!m_imageBufferPipe; }
bool isGPUBased() const final { return !!m_imageBufferPipe; }
RefPtr<ImageBufferPipe> m_imageBufferPipe;
};
}
SPECIALIZE_TYPE_TRAITS_CANVASRENDERINGCONTEXT(WebCore::PlaceholderRenderingContext, isPlaceholder())
#endif