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/*
* Copyright (C) 2019 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 "FloatRect.h"
#include "InlineIteratorInlineBox.h"
#include "InlineIteratorLine.h"
#include "InlineIteratorTextBox.h"
#include "LayoutIntegrationBoxTree.h"
#include "LayoutPoint.h"
#include "LayoutState.h"
#include "RenderObjectEnums.h"
#include <wtf/CheckedPtr.h>
namespace WebCore {
class GraphicsContext;
class HitTestLocation;
class HitTestRequest;
class HitTestResult;
class RenderBlockFlow;
class RenderBox;
class RenderBoxModelObject;
class RenderInline;
class RenderLineBreak;
struct PaintInfo;
namespace Layout {
class InlineDamage;
}
namespace LayoutIntegration {
struct InlineContent;
class LineLayout : public CanMakeCheckedPtr {
WTF_MAKE_FAST_ALLOCATED;
public:
LineLayout(RenderBlockFlow&);
~LineLayout();
static RenderBlockFlow* blockContainer(RenderObject&);
static LineLayout* containing(RenderObject&);
static const LineLayout* containing(const RenderObject&);
static bool isEnabled();
static bool canUseFor(const RenderBlockFlow&);
static bool canUseForAfterStyleChange(const RenderBlockFlow&, StyleDifference);
static bool canUseForAfterInlineBoxStyleChange(const RenderInline&, StyleDifference);
bool shouldSwitchToLegacyOnInvalidation() const;
void updateReplacedDimensions(const RenderBox&);
void updateInlineBlockDimensions(const RenderBlock&);
void updateLineBreakBoxDimensions(const RenderLineBreak&);
void updateInlineBoxDimensions(const RenderInline&);
void updateStyle(const RenderBoxModelObject&, const RenderStyle& oldStyle);
std::pair<LayoutUnit, LayoutUnit> computeIntrinsicWidthConstraints();
void layout();
LayoutUnit contentLogicalHeight() const;
size_t lineCount() const;
LayoutUnit firstLinePhysicalBaseline() const;
LayoutUnit lastLineLogicalBaseline() const;
void adjustForPagination();
void collectOverflow();
const InlineContent* inlineContent() const { return m_inlineContent.get(); }
bool isPaginated() const { return m_isPaginatedContent; }
void paint(PaintInfo&, const LayoutPoint& paintOffset);
bool hitTest(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint& accumulatedOffset, HitTestAction);
InlineIterator::TextBoxIterator textBoxesFor(const RenderText&) const;
InlineIterator::LeafBoxIterator boxFor(const RenderElement&) const;
InlineIterator::InlineBoxIterator firstInlineBoxFor(const RenderInline&) const;
InlineIterator::InlineBoxIterator firstRootInlineBox() const;
InlineIterator::LineIterator firstLine() const;
InlineIterator::LineIterator lastLine() const;
LayoutRect firstInlineBoxRect(const RenderInline&) const;
LayoutRect enclosingBorderBoxRectFor(const RenderInline&) const;
LayoutRect visualOverflowBoundingBoxRectFor(const RenderInline&) const;
Vector<FloatRect> collectInlineBoxRects(const RenderInline&) const;
const RenderObject& rendererForLayoutBox(const Layout::Box&) const;
const RenderBlockFlow& flow() const { return m_boxTree.flow(); }
RenderBlockFlow& flow() { return m_boxTree.flow(); }
static void releaseCaches(RenderView&);
#if ENABLE(TREE_DEBUGGING)
void outputLineTree(WTF::TextStream&, size_t depth) const;
#endif
private:
void prepareLayoutState();
void updateFormattingRootGeometryAndInvalidate();
void prepareFloatingState();
void constructContent();
InlineContent& ensureInlineContent();
void updateLayoutBoxDimensions(const RenderBox&);
Layout::InlineDamage& ensureLineDamage();
const Layout::ContainerBox& rootLayoutBox() const;
Layout::ContainerBox& rootLayoutBox();
void clearInlineContent();
void releaseCaches();
BoxTree m_boxTree;
Layout::LayoutState m_layoutState;
Layout::InlineFormattingState& m_inlineFormattingState;
// FIXME: This should be part of LayoutState.
std::unique_ptr<Layout::InlineDamage> m_lineDamage;
RefPtr<InlineContent> m_inlineContent;
bool m_isPaginatedContent { false };
};
}
}
#endif
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