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/*
* Copyright (C) 2024 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. ``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
* 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
#include "FloatRect.h"
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class CanvasRenderingContext2DBase;
class Filter;
class GraphicsContext;
class GraphicsContextSwitcher;
class CanvasLayerContextSwitcher : public RefCounted<CanvasLayerContextSwitcher> {
public:
static RefPtr<CanvasLayerContextSwitcher> create(CanvasRenderingContext2DBase&, const FloatRect& bounds, RefPtr<Filter>&&);
~CanvasLayerContextSwitcher();
GraphicsContext* drawingContext() const;
FloatRect expandedBounds() const { return m_bounds + outsets(); }
private:
CanvasLayerContextSwitcher(CanvasRenderingContext2DBase&, const FloatRect& bounds, std::unique_ptr<GraphicsContextSwitcher>&&);
FloatBoxExtent outsets() const;
Ref<CanvasRenderingContext2DBase> protectedContext() const { return m_context.get(); }
WeakRef<CanvasRenderingContext2DBase> m_context;
GraphicsContext* m_effectiveDrawingContext;
FloatRect m_bounds;
std::unique_ptr<GraphicsContextSwitcher> m_targetSwitcher;
};
} // namespace WebCore
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