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/*
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004-2017 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "LegacyInlineBox.h"
#include "RenderText.h"
#include "TextBoxSelectableRange.h"
#include "TextRun.h"
namespace WebCore {
class RenderCombineText;
namespace InlineIterator {
class BoxLegacyPath;
}
class LegacyInlineTextBox : public LegacyInlineBox {
WTF_MAKE_ISO_ALLOCATED(LegacyInlineTextBox);
public:
explicit LegacyInlineTextBox(RenderText& renderer)
: LegacyInlineBox(renderer)
{
setBehavesLikeText(true);
}
virtual ~LegacyInlineTextBox();
RenderText& renderer() const { return downcast<RenderText>(LegacyInlineBox::renderer()); }
const RenderStyle& lineStyle() const { return isFirstLine() ? renderer().firstLineStyle() : renderer().style(); }
LegacyInlineTextBox* prevTextBox() const { return m_prevTextBox; }
LegacyInlineTextBox* nextTextBox() const { return m_nextTextBox; }
void setNextTextBox(LegacyInlineTextBox* n) { m_nextTextBox = n; }
void setPreviousTextBox(LegacyInlineTextBox* p) { m_prevTextBox = p; }
bool hasTextContent() const;
// These functions do not account for combined text. For combined text this box will always have len() == 1
// regardless of whether the resulting composition is the empty string. Use hasTextContent() if you want to
// know whether this box has text content.
//
// FIXME: These accessors should ASSERT(!isDirty()). See https://bugs.webkit.org/show_bug.cgi?id=97264
// Note len() == 1 for combined text regardless of whether the composition is empty. Use hasTextContent() to
unsigned start() const { return m_start; }
unsigned end() const { return m_start + m_len; }
unsigned len() const { return m_len; }
void setStart(unsigned start) { m_start = start; }
void setLen(unsigned len) { m_len = len; }
void offsetRun(int d) { ASSERT(!isDirty()); ASSERT(d > 0 || m_start >= static_cast<unsigned>(-d)); m_start += d; }
auto truncation() const { return m_truncation; }
TextBoxSelectableRange selectableRange() const;
void markDirty(bool dirty = true) final;
using LegacyInlineBox::hasHyphen;
using LegacyInlineBox::setHasHyphen;
using LegacyInlineBox::canHaveLeftExpansion;
using LegacyInlineBox::setCanHaveLeftExpansion;
using LegacyInlineBox::canHaveRightExpansion;
using LegacyInlineBox::setCanHaveRightExpansion;
using LegacyInlineBox::forceRightExpansion;
using LegacyInlineBox::setForceRightExpansion;
using LegacyInlineBox::forceLeftExpansion;
using LegacyInlineBox::setForceLeftExpansion;
LayoutUnit baselinePosition(FontBaseline) const final;
LayoutUnit lineHeight() const final;
LayoutRect logicalOverflowRect() const;
void setLogicalOverflowRect(const LayoutRect&);
LayoutUnit logicalTopVisualOverflow() const { return logicalOverflowRect().y(); }
LayoutUnit logicalBottomVisualOverflow() const { return logicalOverflowRect().maxY(); }
LayoutUnit logicalLeftVisualOverflow() const { return logicalOverflowRect().x(); }
LayoutUnit logicalRightVisualOverflow() const { return logicalOverflowRect().maxX(); }
virtual void dirtyOwnLineBoxes() { dirtyLineBoxes(); }
#if ENABLE(TREE_DEBUGGING)
void outputLineBox(WTF::TextStream&, bool mark, int depth) const final;
const char* boxName() const final;
#endif
private:
LayoutUnit selectionTop() const;
LayoutUnit selectionBottom() const;
LayoutUnit selectionHeight() const;
public:
virtual LayoutRect localSelectionRect(unsigned startPos, unsigned endPos) const;
std::pair<unsigned, unsigned> selectionStartEnd() const;
protected:
void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) override;
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom, HitTestAction) override;
private:
void deleteLine() final;
void extractLine() final;
void attachLine() final;
public:
RenderObject::HighlightState selectionState() const final;
private:
void clearTruncation() final { m_truncation = { }; }
float placeEllipsisBox(bool flowIsLTR, float visibleLeftEdge, float visibleRightEdge, float ellipsisWidth, float &truncatedWidth, bool& foundBox) final;
public:
bool isLineBreak() const final;
private:
bool isInlineTextBox() const final { return true; }
public:
int caretMinOffset() const final;
int caretMaxOffset() const final;
private:
float textPos() const; // returns the x position relative to the left start of the text line.
public:
bool hasMarkers() const;
private:
friend class InlineIterator::BoxLegacyPath;
const RenderCombineText* combinedText() const;
const FontCascade& lineFont() const;
String text(bool ignoreCombinedText = false, bool ignoreHyphen = false) const; // The effective text for the run.
TextRun createTextRun(bool ignoreCombinedText = false, bool ignoreHyphen = false) const;
ExpansionBehavior expansionBehavior() const;
void behavesLikeText() const = delete;
LegacyInlineTextBox* m_prevTextBox { nullptr }; // The previous box that also uses our RenderObject
LegacyInlineTextBox* m_nextTextBox { nullptr }; // The next box that also uses our RenderObject
// Where to truncate when text overflow is applied.
std::optional<unsigned short> m_truncation;
unsigned m_start { 0 };
unsigned m_len { 0 };
};
LayoutRect snappedSelectionRect(const LayoutRect&, float logicalRight, float selectionTop, float selectionHeight, bool isHorizontal);
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_INLINE_BOX(LegacyInlineTextBox, isInlineTextBox())
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