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/*
* 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 "DisplayInlineContent.h"
namespace WebCore {
namespace LineLayoutTraversal {
static FloatPoint linePosition(float logicalLeft, float logicalTop)
{
return FloatPoint(logicalLeft, roundf(logicalTop));
}
class DisplayRunPath {
public:
DisplayRunPath(const Display::InlineContent& inlineContent, size_t startIndex, size_t endIndex)
: m_inlineContent(&inlineContent)
, m_endIndex(endIndex)
, m_runIndex(startIndex)
{ }
DisplayRunPath(DisplayRunPath&&) = default;
DisplayRunPath(const DisplayRunPath&) = default;
DisplayRunPath& operator=(const DisplayRunPath&) = default;
DisplayRunPath& operator=(DisplayRunPath&&) = default;
FloatRect rect() const { return logicalRect(); }
FloatRect logicalRect() const
{
auto logicalRect = run().logicalRect();
FloatPoint position = linePosition(logicalRect.left(), logicalRect.top());
return { position, logicalRect.size() };
}
float baselineOffset() const { return lineBox().baselineOffset(); }
bool isLeftToRightDirection() const { return true; }
bool isHorizontal() const { return true; }
bool dirOverride() const { return false; }
bool isLineBreak() const { return run().isLineBreak(); }
bool useLineBreakBoxRenderTreeDumpQuirk() const
{
if (!m_runIndex)
return false;
auto& previous = runs()[m_runIndex - 1];
return previous.lineIndex() == run().lineIndex();
}
bool hasHyphen() const { return run().textContext()->needsHyphen(); }
StringView text() const { return run().textContext()->content(); }
unsigned localStartOffset() const { return run().textContext()->start(); }
unsigned localEndOffset() const { return run().textContext()->end(); }
unsigned length() const { return run().textContext()->length(); }
bool isLastOnLine() const
{
if (isLast())
return true;
auto& next = runs()[m_runIndex + 1];
return run().lineIndex() != next.lineIndex();
}
bool isLast() const
{
return m_runIndex + 1 == m_endIndex;
};
void traverseNextTextBoxInVisualOrder()
{
ASSERT(!atEnd());
++m_runIndex;
}
void traverseNextTextBoxInTextOrder() { traverseNextTextBoxInVisualOrder(); }
bool operator==(const DisplayRunPath& other) const { return m_inlineContent == other.m_inlineContent && m_runIndex == other.m_runIndex; }
bool atEnd() const { return m_runIndex == m_endIndex; }
private:
const Display::InlineContent::Runs& runs() const { return m_inlineContent->runs; }
const Display::Run& run() const { return runs()[m_runIndex]; }
const Display::LineBox& lineBox() const { return m_inlineContent->lineBoxForRun(run()); }
RefPtr<const Display::InlineContent> m_inlineContent;
size_t m_endIndex { 0 };
size_t m_runIndex { 0 };
};
}
}
#endif