91 lines
3.1 KiB
C++
91 lines
3.1 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(LAYOUT_FORMATTING_CONTEXT)
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#include "LayoutContainerBox.h"
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#include <wtf/IsoMalloc.h>
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#include <wtf/WeakPtr.h>
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namespace WebCore {
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class RenderBlockFlow;
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class RenderBox;
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class RenderElement;
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class RenderObject;
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class RenderTable;
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class RenderView;
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namespace Layout {
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class LayoutState;
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class LayoutTree {
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WTF_MAKE_ISO_ALLOCATED(LayoutTree);
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public:
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LayoutTree();
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~LayoutTree() = default;
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const ContainerBox& root() const { return downcast<ContainerBox>(*m_layoutBoxes[0]); }
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void append(std::unique_ptr<Box> box) { m_layoutBoxes.append(WTFMove(box)); }
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private:
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Vector<std::unique_ptr<Box>> m_layoutBoxes;
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};
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class TreeBuilder {
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public:
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static std::unique_ptr<Layout::LayoutTree> buildLayoutTree(const RenderView&);
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private:
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TreeBuilder(LayoutTree&);
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void buildSubTree(const RenderElement& parentRenderer, ContainerBox& parentContainer);
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void buildTableStructure(const RenderTable& tableRenderer, ContainerBox& tableWrapperBox);
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Box* createLayoutBox(const ContainerBox& parentContainer, const RenderObject& childRenderer);
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Box& createReplacedBox(std::optional<Box::ElementAttributes>, RenderStyle&&);
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Box& createTextBox(String text, bool canUseSimplifiedTextMeasuring, RenderStyle&&);
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Box& createLineBreakBox(bool isOptional, RenderStyle&&);
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ContainerBox& createContainer(std::optional<Box::ElementAttributes>, RenderStyle&&);
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LayoutTree& m_layoutTree;
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};
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#if ENABLE(TREE_DEBUGGING)
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String layoutTreeAsText(const Box&, const LayoutState*);
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void showLayoutTree(const Box&, const LayoutState*);
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void showLayoutTree(const Box&);
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void showInlineTreeAndRuns(TextStream&, const LayoutState&, const ContainerBox& inlineFormattingRoot, size_t depth);
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void printLayoutTreeForLiveDocuments();
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#endif
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}
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}
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#endif
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