| /* |
| * 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) |