| /* |
| * Copyright (C) 2020 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 "InlineIteratorBoxModernPath.h" |
| #include "LayoutIntegrationInlineContent.h" |
| #include "RenderBlockFlow.h" |
| |
| namespace WebCore { |
| namespace InlineIterator { |
| |
| class BoxModernPath; |
| |
| class LineIteratorModernPath { |
| public: |
| LineIteratorModernPath(const LayoutIntegration::InlineContent& inlineContent, size_t lineIndex) |
| : m_inlineContent(&inlineContent) |
| , m_lineIndex(lineIndex) |
| { |
| ASSERT(lineIndex <= lines().size()); |
| } |
| LineIteratorModernPath(LineIteratorModernPath&&) = default; |
| LineIteratorModernPath(const LineIteratorModernPath&) = default; |
| LineIteratorModernPath& operator=(const LineIteratorModernPath&) = default; |
| LineIteratorModernPath& operator=(LineIteratorModernPath&&) = default; |
| |
| LayoutUnit top() const { return LayoutUnit::fromFloatRound(line().enclosingContentTop()); } |
| LayoutUnit bottom() const { return LayoutUnit::fromFloatRound(line().enclosingContentBottom()); } |
| LayoutUnit lineBoxTop() const { return LayoutUnit::fromFloatRound(line().lineBoxTop()); } |
| LayoutUnit lineBoxBottom() const { return LayoutUnit::fromFloatRound(line().lineBoxBottom()); } |
| |
| LayoutUnit selectionTop() const { return !m_lineIndex ? top() : LineIteratorModernPath(*m_inlineContent, m_lineIndex - 1).selectionBottom(); } |
| // FIXME: Remove the containingBlock().borderAndPaddingBefore() offset after retiring legacy line layout. It also requires changes in RenderText::positionForPoint to find the first line with offset. |
| // - the "before" value is already factored in to the line offset |
| // - this logic negates the first line's natural offset (e.g. block has no border/padding but the first line has a computed offset). |
| LayoutUnit selectionTopForHitTesting() const { return !m_lineIndex ? containingBlock().borderAndPaddingBefore() : selectionTop(); }; |
| // FIXME: Implement or replace. |
| LayoutUnit selectionBottom() const { return bottom(); } |
| |
| float contentLogicalLeft() const { return line().lineBoxLeft() + line().contentLeft(); } |
| float contentLogicalRight() const { return contentLogicalLeft() + line().contentWidth(); } |
| float y() const { return lineBoxTop(); } |
| float logicalHeight() const { return lineBoxBottom() - lineBoxTop(); } |
| bool isHorizontal() const { return true; } |
| FontBaseline baselineType() const { return AlphabeticBaseline; } |
| |
| const RenderBlockFlow& containingBlock() const { return m_inlineContent->containingBlock(); } |
| const LegacyRootInlineBox* legacyRootInlineBox() const { return nullptr; } |
| |
| void traverseNext() |
| { |
| ASSERT(!atEnd()); |
| |
| ++m_lineIndex; |
| } |
| |
| void traversePrevious() |
| { |
| ASSERT(!atEnd()); |
| |
| if (!m_lineIndex) { |
| setAtEnd(); |
| return; |
| } |
| |
| --m_lineIndex; |
| } |
| |
| bool operator==(const LineIteratorModernPath& other) const { return m_inlineContent == other.m_inlineContent && m_lineIndex == other.m_lineIndex; } |
| |
| bool atEnd() const { return m_lineIndex == lines().size(); } |
| |
| BoxModernPath firstLeafBox() const |
| { |
| if (!line().boxCount()) |
| return { *m_inlineContent }; |
| auto runIterator = BoxModernPath { *m_inlineContent, line().firstBoxIndex() }; |
| if (runIterator.box().isInlineBox()) |
| runIterator.traverseNextOnLine(); |
| return runIterator; |
| } |
| |
| BoxModernPath lastLeafBox() const |
| { |
| auto boxCount = line().boxCount(); |
| if (!boxCount) |
| return { *m_inlineContent }; |
| auto runIterator = BoxModernPath { *m_inlineContent, line().firstBoxIndex() + boxCount - 1 }; |
| if (runIterator.box().isInlineBox()) |
| runIterator.traversePreviousOnLine(); |
| return runIterator; |
| } |
| |
| private: |
| void setAtEnd() { m_lineIndex = lines().size(); } |
| |
| const LayoutIntegration::InlineContent::Lines& lines() const { return m_inlineContent->lines; } |
| const LayoutIntegration::Line& line() const { return lines()[m_lineIndex]; } |
| |
| RefPtr<const LayoutIntegration::InlineContent> m_inlineContent; |
| size_t m_lineIndex { 0 }; |
| }; |
| |
| } |
| } |
| |
| #endif |
| |