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/*
* 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
#include "DisplayBoxFactory.h"
#include "InlineDisplayContent.h"
#include <wtf/IsoMalloc.h>
#if ENABLE(TREE_DEBUGGING)
#include <wtf/Forward.h>
#endif
namespace WebCore {
class LayoutSize;
namespace Layout {
class Box;
class BoxGeometry;
class ElementBox;
class LayoutState;
}
namespace Display {
class Box;
class ContainerBox;
class PositioningContext;
class StackingItem;
class Tree;
struct BuildingState;
class TreeBuilder {
friend class BoxFactory;
public:
explicit TreeBuilder(float pixelSnappingFactor);
~TreeBuilder();
std::unique_ptr<Tree> build(const Layout::LayoutState&);
private:
struct InsertionPosition {
ContainerBox& container;
Box* currentChild { nullptr };
};
void recursiveBuildDisplayTree(const Layout::LayoutState&, const Layout::Box&, InsertionPosition&);
void buildInlineDisplayTree(const Layout::LayoutState&, const Layout::ElementBox&, InsertionPosition&);
enum class WillTraverseDescendants : bool { No, Yes };
StackingItem* insertIntoTree(std::unique_ptr<Box>&&, InsertionPosition&, WillTraverseDescendants);
void insert(std::unique_ptr<Box>&&, InsertionPosition&) const;
void accountForBoxPaintingExtent(const Box&);
void pushStateForBoxDescendants(const Layout::ElementBox&, const Layout::BoxGeometry&, const ContainerBox&, StackingItem*);
void popState(const BoxModelBox& currentBox);
void didAppendNonContainerStackingItem(StackingItem&);
const InlineDisplay::Lines& lines(const Layout::ElementBox&) const { return m_displayLines; }
const InlineDisplay::Boxes& boxes(const Layout::ElementBox&) const { return m_displayBoxes; }
Tree& tree() const { return *m_tree; }
BuildingState& currentState();
const PositioningContext& positioningContext();
BoxFactory m_boxFactory;
RootBackgroundPropagation m_rootBackgroundPropgation { RootBackgroundPropagation::None };
std::unique_ptr<Tree> m_tree;
std::unique_ptr<Vector<BuildingState>> m_stateStack;
InlineDisplay::Lines m_displayLines;
InlineDisplay::Boxes m_displayBoxes;
};
#if ENABLE(TREE_DEBUGGING)
String displayTreeAsText(const Box&);
void showDisplayTree(const Box&);
String displayTreeAsText(const StackingItem&);
void showDisplayTree(const StackingItem&);
#endif
} // namespace Display
} // namespace WebCore
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