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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
#include "InlineTextBox.h"
#include "RenderText.h"
#include <wtf/Vector.h>
namespace WebCore {
namespace LineLayoutTraversal {
class ComplexPath {
public:
ComplexPath(const InlineBox* inlineBox, Vector<const InlineTextBox*>&& sortedInlineTextBoxes = { }, size_t sortedInlineTextBoxIndex = 0)
: m_inlineBox(inlineBox)
, m_sortedInlineTextBoxes(WTFMove(sortedInlineTextBoxes))
, m_sortedInlineTextBoxIndex(sortedInlineTextBoxIndex)
{ }
FloatRect rect() const { return m_inlineBox->frameRect(); }
bool isLeftToRightDirection() const { return m_inlineBox->isLeftToRightDirection(); }
bool isHorizontal() const { return m_inlineBox->isHorizontal(); }
bool dirOverride() const { return m_inlineBox->dirOverride(); }
bool isLineBreak() const { return m_inlineBox->isLineBreak(); }
float baselineOffset() const { return m_inlineBox->baselinePosition(AlphabeticBaseline); }
bool useLineBreakBoxRenderTreeDumpQuirk() const
{
return !m_inlineBox->behavesLikeText();
}
bool hasHyphen() const { return inlineTextBox()->hasHyphen(); }
StringView text() const { return StringView(inlineTextBox()->renderer().text()).substring(inlineTextBox()->start(), inlineTextBox()->len()); }
unsigned localStartOffset() const { return inlineTextBox()->start(); }
unsigned localEndOffset() const { return inlineTextBox()->end(); }
unsigned length() const { return inlineTextBox()->len(); }
inline bool isLastOnLine() const
{
auto* next = nextInlineTextBoxInTextOrder();
return !next || &inlineTextBox()->root() != &next->root();
}
inline bool isLast() const { return !nextInlineTextBoxInTextOrder(); };
void traverseNextTextBoxInVisualOrder() { m_inlineBox = inlineTextBox()->nextTextBox(); }
void traverseNextTextBoxInTextOrder()
{
m_inlineBox = nextInlineTextBoxInTextOrder();
if (!m_sortedInlineTextBoxes.isEmpty())
++m_sortedInlineTextBoxIndex;
}
bool operator==(const ComplexPath& other) const { return m_inlineBox == other.m_inlineBox; }
bool atEnd() const { return !m_inlineBox; }
private:
const InlineTextBox* inlineTextBox() const { return downcast<InlineTextBox>(m_inlineBox); }
const InlineTextBox* nextInlineTextBoxInTextOrder() const;
const InlineBox* m_inlineBox;
Vector<const InlineTextBox*> m_sortedInlineTextBoxes;
size_t m_sortedInlineTextBoxIndex { 0 };
};
inline const InlineTextBox* ComplexPath::nextInlineTextBoxInTextOrder() const
{
if (!m_sortedInlineTextBoxes.isEmpty()) {
if (m_sortedInlineTextBoxIndex + 1 < m_sortedInlineTextBoxes.size())
return m_sortedInlineTextBoxes[m_sortedInlineTextBoxIndex + 1];
return nullptr;
}
return inlineTextBox()->nextTextBox();
}
}
}