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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 "FormattingContext.h"
#include "FormattingState.h"
#include "InlineDisplayContent.h"
#include "InlineFormattingConstraints.h"
#include "InlineFormattingGeometry.h"
#include "InlineFormattingQuirks.h"
#include "InlineLineBuilder.h"
#include <wtf/IsoMalloc.h>
namespace WebCore {
namespace Layout {
class InlineLayoutState;
class InlineDamage;
class InlineFormattingState;
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 };
};
// This class implements the layout logic for inline formatting contexts.
// https://www.w3.org/TR/CSS22/visuren.html#inline-formatting
class InlineFormattingContext final : public FormattingContext {
WTF_MAKE_ISO_ALLOCATED(InlineFormattingContext);
public:
InlineFormattingContext(const ElementBox& formattingContextRoot, InlineFormattingState&, const InlineDamage* = nullptr);
InlineLayoutResult layoutInFlowAndFloatContent(const ConstraintsForInlineContent&, InlineLayoutState&);
void layoutOutOfFlowContent(const ConstraintsForInlineContent&, InlineLayoutState&, const InlineDisplay::Content&);
IntrinsicWidthConstraints computedIntrinsicWidthConstraints() override;
LayoutUnit maximumContentSize();
const InlineFormattingGeometry& formattingGeometry() const final { return m_inlineFormattingGeometry; }
const InlineFormattingQuirks& formattingQuirks() const final { return m_inlineFormattingQuirks; }
const InlineFormattingState& formattingState() const { return downcast<InlineFormattingState>(FormattingContext::formattingState()); }
private:
InlineLayoutResult lineLayout(const InlineItems&, InlineItemRange, std::optional<PreviousLine>, const ConstraintsForInlineContent&, InlineLayoutState&);
void layoutFloatContentOnly(const ConstraintsForInlineContent&, FloatingState&);
void computeStaticPositionForOutOfFlowContent(const FormattingState::OutOfFlowBoxList&, const ConstraintsForInFlowContent&, const InlineDisplay::Content&, const FloatingState&);
InlineLayoutUnit computedIntrinsicWidthForConstraint(IntrinsicWidthMode) const;
void collectContentIfNeeded();
InlineRect createDisplayContentForLine(size_t lineIndex, const LineBuilder::LayoutResult&, const ConstraintsForInlineContent&, const InlineLayoutState&, InlineDisplay::Content&);
void resetGeometryForClampedContent(const InlineItemRange& needsDisplayContentRange, const LineBuilder::SuspendedFloatList& suspendedFloats, LayoutPoint topleft);
InlineFormattingState& formattingState() { return downcast<InlineFormattingState>(FormattingContext::formattingState()); }
const InlineDamage* m_lineDamage { nullptr };
const InlineFormattingGeometry m_inlineFormattingGeometry;
const InlineFormattingQuirks m_inlineFormattingQuirks;
};
}
}
SPECIALIZE_TYPE_TRAITS_LAYOUT_FORMATTING_CONTEXT(InlineFormattingContext, isInlineFormattingContext())
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