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/*
* Copyright (C) 2023 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 "FormattingConstraints.h"
#include "InlineContentBreaker.h"
#include "InlineLayoutState.h"
#include "InlineLine.h"
#include "InlineLineTypes.h"
#include "LineLayoutResult.h"
namespace WebCore {
namespace Layout {
struct LineInput {
InlineItemRange needsLayoutRange;
InlineRect initialLogicalRect;
};
class AbstractLineBuilder {
public:
virtual LineLayoutResult layoutInlineContent(const LineInput&, const std::optional<PreviousLine>&) = 0;
virtual ~AbstractLineBuilder() { };
void setIntrinsicWidthMode(IntrinsicWidthMode);
protected:
AbstractLineBuilder(InlineFormattingContext&, const ElementBox& rootBox, HorizontalConstraints rootHorizontalConstraints, const InlineItemList&);
void reset();
std::optional<InlineLayoutUnit> eligibleOverflowWidthAsLeading(const InlineContentBreaker::ContinuousContent::RunList&, const InlineContentBreaker::Result&, bool) const;
std::optional<IntrinsicWidthMode> intrinsicWidthMode() const { return m_intrinsicWidthMode; }
bool isInIntrinsicWidthMode() const { return !!intrinsicWidthMode(); }
bool isFirstFormattedLine() const { return !m_previousLine.has_value(); }
InlineContentBreaker& inlineContentBreaker() { return m_inlineContentBreaker; }
InlineFormattingContext& formattingContext() { return m_inlineFormattingContext; }
const InlineFormattingContext& formattingContext() const { return m_inlineFormattingContext; }
const HorizontalConstraints& rootHorizontalConstraints() const { return m_rootHorizontalConstraints; }
const InlineLayoutState& layoutState() const;
InlineLayoutState& layoutState();
const BlockLayoutState& blockLayoutState() const { return layoutState().parentBlockLayoutState(); }
const ElementBox& root() const { return m_rootBox; }
const RenderStyle& rootStyle() const;
protected:
Line m_line;
InlineRect m_lineLogicalRect;
std::span<const InlineItem> m_inlineItemList;
Vector<const InlineItem*, 32> m_wrapOpportunityList;
std::optional<InlineTextItem> m_partialLeadingTextItem;
std::optional<PreviousLine> m_previousLine { };
private:
InlineFormattingContext& m_inlineFormattingContext;
const ElementBox& m_rootBox; // Note that this is not necessarily a block container (see range builder).
HorizontalConstraints m_rootHorizontalConstraints;
InlineContentBreaker m_inlineContentBreaker;
std::optional<IntrinsicWidthMode> m_intrinsicWidthMode;
};
}
}
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