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/*
* Copyright (C) 2018 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 "InlineDisplayContent.h"
#include "InlineFormattingConstraints.h"
#include "InlineFormattingUtils.h"
#include "InlineLayoutState.h"
#include "InlineQuirks.h"
#include "IntrinsicWidthHandler.h"
#include "LayoutIntegrationUtils.h"
#include <wtf/TZoneMalloc.h>
namespace WebCore {
namespace Layout {
class InlineDamage;
class InlineContentCache;
class LineBox;
struct InlineLayoutResult {
InlineDisplay::Content displayContent;
enum class Range : uint8_t {
Full, // Display content represents the complete inline content -result of full layout
FullFromDamage, // Display content represents part of the inline content starting from damaged line until the end of inline content -result of partial layout with continuous damage all the way to the end of the inline content
PartialFromDamage // Display content represents part of the inline content starting from damaged line until damage stops -result of partial layout with damage that does not cover the entire inline content
};
Range range { Range::Full };
bool didDiscardContent { false };
};
// This class implements the layout logic for inline formatting context.
// https://www.w3.org/TR/CSS22/visuren.html#inline-formatting
class InlineFormattingContext {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(InlineFormattingContext);
public:
InlineFormattingContext(const ElementBox& formattingContextRoot, LayoutState&, BlockLayoutState& parentBlockLayoutState);
InlineLayoutResult layout(const ConstraintsForInlineContent&, InlineDamage* = nullptr);
std::pair<LayoutUnit, LayoutUnit> minimumMaximumContentSize(InlineDamage* = nullptr);
LayoutUnit minimumContentSize(InlineDamage* = nullptr);
LayoutUnit maximumContentSize(InlineDamage* = nullptr);
const ElementBox& root() const { return m_rootBlockContainer; }
const InlineFormattingUtils& formattingUtils() const { return m_inlineFormattingUtils; }
const InlineQuirks& quirks() const { return m_inlineQuirks; }
const FloatingContext& floatingContext() const { return m_floatingContext; }
InlineLayoutState& layoutState() { return m_inlineLayoutState; }
const InlineLayoutState& layoutState() const { return m_inlineLayoutState; }
enum class EscapeReason {
InkOverflowNeedsInitialContiningBlockForStrokeWidth
};
const BoxGeometry& geometryForBox(const Box&, std::optional<EscapeReason> = std::nullopt) const;
BoxGeometry& geometryForBox(const Box&);
const IntegrationUtils& integrationUtils() const { return m_integrationUtils; }
private:
InlineLayoutResult lineLayout(AbstractLineBuilder&, const InlineItemList&, InlineItemRange, std::optional<PreviousLine>, const ConstraintsForInlineContent&, const InlineDamage* = nullptr);
void layoutFloatContentOnly(const ConstraintsForInlineContent&);
void collectContentIfNeeded();
InlineRect createDisplayContentForInlineContent(const LineBox&, const LineLayoutResult&, const ConstraintsForInlineContent&, InlineDisplay::Content&, size_t& numberOfPreviousLContentfulLines);
void updateInlineLayoutStateWithLineLayoutResult(const LineLayoutResult&, const InlineRect& lineLogicalRect, const FloatingContext&);
void updateBoxGeometryForPlacedFloats(const LineLayoutResult::PlacedFloatList&);
void resetBoxGeometriesForDiscardedContent(const InlineItemRange& discardedRange, const LineLayoutResult::SuspendedFloatList& suspendedFloats);
bool createDisplayContentForLineFromCachedContent(const ConstraintsForInlineContent&, InlineLayoutResult&);
void createDisplayContentForEmptyInlineContent(const ConstraintsForInlineContent&, InlineLayoutResult&);
void initializeInlineLayoutState(const LayoutState&);
void rebuildInlineItemListIfNeeded(InlineDamage*);
InlineContentCache& inlineContentCache() { return m_inlineContentCache; }
private:
const ElementBox& m_rootBlockContainer;
LayoutState& m_globalLayoutState;
const FloatingContext m_floatingContext;
const InlineFormattingUtils m_inlineFormattingUtils;
const InlineQuirks m_inlineQuirks;
const IntegrationUtils m_integrationUtils;
InlineContentCache& m_inlineContentCache;
InlineLayoutState m_inlineLayoutState;
};
}
}
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