| /* |
| * 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 "InlineLineBreaker.h" |
| #include "InlineLineBuilder.h" |
| |
| namespace WebCore { |
| namespace Layout { |
| |
| struct LineCandidate; |
| |
| class LineLayoutContext { |
| public: |
| LineLayoutContext(const InlineFormattingContext&, const ContainerBox& formattingContextRoot, const InlineItems&); |
| |
| struct LineContent { |
| struct PartialContent { |
| bool trailingContentHasHyphen { false }; |
| unsigned overflowContentLength { 0 }; |
| }; |
| Optional<unsigned> trailingInlineItemIndex; |
| Optional<PartialContent> partialContent; |
| struct Float { |
| enum class Intrusive { No, Yes }; |
| Intrusive isIntrusive { Intrusive::Yes }; |
| const InlineItem* item { nullptr }; |
| }; |
| using FloatList = Vector<Float>; |
| FloatList floats; |
| const LineBuilder::RunList runList; |
| const LineBoxBuilder lineBox; |
| }; |
| struct InlineItemRange { |
| bool isEmpty() const { return start == end; } |
| size_t size() const { return end - start; } |
| size_t start { 0 }; |
| size_t end { 0 }; |
| }; |
| LineContent layoutLine(LineBuilder&, const InlineItemRange, Optional<unsigned> partialLeadingContentLength); |
| |
| private: |
| void nextContentForLine(LineCandidate&, unsigned inlineItemIndex, const InlineItemRange layoutRange, Optional<unsigned> overflowLength, InlineLayoutUnit availableLineWidth, InlineLayoutUnit currentLogicalRight); |
| struct Result { |
| LineBreaker::IsEndOfLine isEndOfLine { LineBreaker::IsEndOfLine::No }; |
| struct CommittedContentCount { |
| size_t value { 0 }; |
| bool isRevert { false }; |
| }; |
| CommittedContentCount committedCount { }; |
| Optional <LineContent::PartialContent> partialContent { }; |
| }; |
| enum class CommitIntrusiveFloatsOnly { No, Yes }; |
| void commitFloats(LineBuilder&, const LineCandidate&, CommitIntrusiveFloatsOnly = CommitIntrusiveFloatsOnly::No); |
| Result handleFloatsAndInlineContent(LineBreaker&, LineBuilder&, const InlineItemRange& layoutRange, const LineCandidate&); |
| size_t rebuildLine(LineBuilder&, const InlineItemRange& layoutRange); |
| void commitPartialContent(LineBuilder&, const LineBreaker::RunList&, const LineBreaker::Result::PartialTrailingContent&); |
| LineContent close(LineBuilder&, const InlineItemRange layoutRange, unsigned committedInlineItemCount, Optional<LineContent::PartialContent>); |
| |
| InlineLayoutUnit inlineItemWidth(const InlineItem&, InlineLayoutUnit contentLogicalLeft) const; |
| |
| const InlineFormattingContext& formattingContext() const { return m_inlineFormattingContext; } |
| const ContainerBox& root() const { return m_formattingContextRoot; } |
| |
| const InlineFormattingContext& m_inlineFormattingContext; |
| const ContainerBox& m_formattingContextRoot; |
| const InlineItems& m_inlineItems; |
| LineContent::FloatList m_floats; |
| Optional<InlineTextItem> m_partialLeadingTextItem; |
| const InlineItem* m_lastWrapOpportunityItem { nullptr }; |
| unsigned m_successiveHyphenatedLineCount { 0 }; |
| }; |
| |
| } |
| } |
| #endif |