89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
/*
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* Copyright (C) 2018 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(CSS_PAINTING_API)
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#include "AffineTransform.h"
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#include "CanvasBase.h"
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#include "ContextDestructionObserver.h"
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#include "EventTarget.h"
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#include "ExceptionOr.h"
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#include "ImageBuffer.h"
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#include "IntSize.h"
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#include "ScriptWrappable.h"
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#include <wtf/Forward.h>
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#include <wtf/RefCounted.h>
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#include <wtf/text/WTFString.h>
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namespace WebCore {
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class CanvasRenderingContext;
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class ImageBitmap;
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class PaintRenderingContext2D;
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class CustomPaintCanvas final : public RefCounted<CustomPaintCanvas>, public CanvasBase, private ContextDestructionObserver {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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static Ref<CustomPaintCanvas> create(ScriptExecutionContext&, unsigned width, unsigned height);
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virtual ~CustomPaintCanvas();
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bool isCustomPaintCanvas() const final { return true; }
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ExceptionOr<RefPtr<PaintRenderingContext2D>> getContext();
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CanvasRenderingContext* renderingContext() const final { return m_context.get(); }
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GraphicsContext* drawingContext() const final;
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GraphicsContext* existingDrawingContext() const final;
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void didDraw(const std::optional<FloatRect>&) final { }
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AffineTransform baseTransform() const final { ASSERT(m_destinationGraphicsContext && m_copiedBuffer); return m_copiedBuffer->baseTransform(); }
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Image* copiedImage() const final;
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void clearCopiedImage() const final;
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void replayDisplayList(GraphicsContext*) const;
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using RefCounted::ref;
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using RefCounted::deref;
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private:
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CustomPaintCanvas(ScriptExecutionContext&, unsigned width, unsigned height);
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void refCanvasBase() final { ref(); }
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void derefCanvasBase() final { deref(); }
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ScriptExecutionContext* canvasBaseScriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }
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std::unique_ptr<CanvasRenderingContext> m_context;
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mutable GraphicsContext* m_destinationGraphicsContext = nullptr;
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mutable RefPtr<ImageBuffer> m_copiedBuffer;
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mutable RefPtr<Image> m_copiedImage;
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};
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}
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SPECIALIZE_TYPE_TRAITS_CANVAS(WebCore::CustomPaintCanvas, isCustomPaintCanvas())
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#endif
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