blob: 13ad1a0361e142d0475aa9efcdcbe7e5900d9c73 [file] [log] [blame]
/*
* Copyright (C) 2020 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(LAYOUT_FORMATTING_CONTEXT)
#include "GraphicsLayer.h"
#include <wtf/IsoMalloc.h>
namespace WebCore {
class GraphicsLayer;
class GraphicsLayerFactory;
namespace Display {
class Tree;
class View;
// A controller object that makes layerization decisions for a display tree, for a single document.
class LayerController {
WTF_MAKE_FAST_ALLOCATED(LayerController);
public:
explicit LayerController(View&);
~LayerController();
void prepareForDisplay(Tree&);
void flushLayers();
void setIsInWindow(bool);
// FIXME: Temporary.
void setNeedsDisplay();
const View& view() const { return m_view; }
private:
void attachRootLayer();
void detachRootLayer();
void ensureRootLayer(FloatSize viewSize, FloatSize contentSize);
void updateRootLayerGeometry(FloatSize viewSize, FloatSize contentSize);
void setupRootLayerHierarchy();
void scheduleRenderingUpdate();
GraphicsLayer* rootGraphicsLayer() const { return m_rootLayer.get(); }
GraphicsLayer* contentLayer() const { return m_contentLayer.get(); }
GraphicsLayerFactory* graphicsLayerFactory() const;
FloatRect visibleRectForLayerFlushing() const;
class RootLayerClient : public GraphicsLayerClient {
public:
RootLayerClient(LayerController&);
private:
// GraphicsLayerClient implementation
void notifyFlushRequired(const GraphicsLayer*) final;
void paintContents(const GraphicsLayer*, GraphicsContext&, const FloatRect&, GraphicsLayerPaintBehavior) final;
float deviceScaleFactor() const final;
LayerController& m_layerController;
};
View& m_view;
RootLayerClient m_rootLayerClient;
RefPtr<GraphicsLayer> m_rootLayer;
RefPtr<GraphicsLayer> m_contentHostLayer;
RefPtr<GraphicsLayer> m_contentLayer;
};
} // namespace Display
} // namespace WebCore
#endif // ENABLE(LAYOUT_FORMATTING_CONTEXT)