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/*
* 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
#include "InlineIteratorBoxModernPath.h"
#include "LayoutIntegrationInlineContent.h"
#include "RenderBlockFlow.h"
namespace WebCore {
namespace InlineIterator {
class BoxModernPath;
class LineBoxIteratorModernPath {
public:
LineBoxIteratorModernPath(const LayoutIntegration::InlineContent& inlineContent, size_t lineIndex)
: m_inlineContent(&inlineContent)
, m_lineIndex(lineIndex)
{
ASSERT(lineIndex <= lines().size());
}
LineBoxIteratorModernPath(LineBoxIteratorModernPath&&) = default;
LineBoxIteratorModernPath(const LineBoxIteratorModernPath&) = default;
LineBoxIteratorModernPath& operator=(const LineBoxIteratorModernPath&) = default;
LineBoxIteratorModernPath& operator=(LineBoxIteratorModernPath&&) = default;
float contentLogicalTop() const { return line().enclosingContentLogicalTop(); }
float contentLogicalBottom() const { return line().enclosingContentLogicalBottom(); }
float logicalTop() const { return line().lineBoxLogicalRect().y(); }
float logicalBottom() const { return line().lineBoxLogicalRect().maxY(); }
float logicalWidth() const { return line().lineBoxLogicalRect().width(); }
float inkOverflowLogicalTop() const { return line().isHorizontal() ? line().inkOverflow().y() : line().inkOverflow().x(); }
float inkOverflowLogicalBottom() const { return line().isHorizontal() ? line().inkOverflow().maxY() : line().inkOverflow().maxX(); }
float scrollableOverflowTop() const { return line().scrollableOverflow().y(); }
float scrollableOverflowBottom() const { return line().scrollableOverflow().maxY(); }
bool hasEllipsis() const { return line().hasEllipsis(); }
FloatRect ellipsisVisualRectIgnoringBlockDirection() const { return line().ellipsis()->visualRect; }
TextRun ellipsisText() const { return TextRun { line().ellipsis()->text.string() }; }
float contentLogicalTopAdjustedForPrecedingLineBox() const
{
if (formattingContextRoot().writingMode().isLineInverted() || !m_lineIndex)
return contentLogicalTop();
return LineBoxIteratorModernPath { *m_inlineContent, m_lineIndex - 1 }.contentLogicalBottom();
}
float contentLogicalBottomAdjustedForFollowingLineBox() const
{
if (!formattingContextRoot().writingMode().isLineInverted() || m_lineIndex == lines().size() - 1)
return contentLogicalBottom();
return LineBoxIteratorModernPath { *m_inlineContent, m_lineIndex + 1 }.contentLogicalTop();
}
float contentLogicalLeft() const
{
auto writingMode = formattingContextRoot().writingMode();
if (writingMode.isLogicalLeftLineLeft())
return line().lineBoxLeft() + line().contentLogicalLeftIgnoringInlineDirection();
ASSERT(writingMode.isVertical()); // Currently only sideways-lr gets this far.
return line().bottom() - (line().contentLogicalLeftIgnoringInlineDirection() + line().contentLogicalWidth());
}
float contentLogicalRight() const { return contentLogicalLeft() + line().contentLogicalWidth(); }
bool isHorizontal() const { return line().isHorizontal(); }
FontBaseline baselineType() const { return line().baselineType(); }
const RenderBlockFlow& formattingContextRoot() const { return m_inlineContent->formattingContextRoot(); }
bool isFirstAfterPageBreak() const { return line().isFirstAfterPageBreak(); }
size_t lineIndex() const { return m_lineIndex; }
void traverseNext()
{
ASSERT(!atEnd());
++m_lineIndex;
}
void traversePrevious()
{
ASSERT(!atEnd());
if (!m_lineIndex) {
setAtEnd();
return;
}
--m_lineIndex;
}
friend bool operator==(const LineBoxIteratorModernPath&, const LineBoxIteratorModernPath&) = default;
bool atEnd() const { return !m_inlineContent || 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.traverseNextLeafOnLine();
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.traversePreviousLeafOnLine();
return runIterator;
}
private:
void setAtEnd() { m_lineIndex = lines().size(); }
const InlineDisplay::Lines& lines() const { return m_inlineContent->displayContent().lines; }
const InlineDisplay::Line& line() const { return lines()[m_lineIndex]; }
WeakPtr<const LayoutIntegration::InlineContent> m_inlineContent;
size_t m_lineIndex { 0 };
};
}
}
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