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/*
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2009 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.
*
*/
#ifndef InlineTextBox_h
#define InlineTextBox_h
#include "InlineBox.h"
#include "RenderText.h" // so textRenderer() can be inline
namespace WebCore {
struct CompositionUnderline;
const unsigned short cNoTruncation = USHRT_MAX;
const unsigned short cFullTruncation = USHRT_MAX - 1;
// Helper functions shared by InlineTextBox / SVGRootInlineBox
void updateGraphicsContext(GraphicsContext*, const Color& fillColor, const Color& strokeColor, float strokeThickness, ColorSpace);
Color correctedTextColor(Color textColor, Color backgroundColor);
class InlineTextBox : public InlineBox {
public:
InlineTextBox(RenderObject* obj)
: InlineBox(obj)
, m_prevTextBox(0)
, m_nextTextBox(0)
, m_start(0)
, m_len(0)
, m_truncation(cNoTruncation)
{
}
InlineTextBox* prevTextBox() const { return m_prevTextBox; }
InlineTextBox* nextTextBox() const { return m_nextTextBox; }
void setNextTextBox(InlineTextBox* n) { m_nextTextBox = n; }
void setPreviousTextBox(InlineTextBox* p) { m_prevTextBox = p; }
unsigned start() const { return m_start; }
unsigned end() const { return m_len ? m_start + m_len - 1 : m_start; }
unsigned len() const { return m_len; }
void setStart(unsigned start) { m_start = start; }
void setLen(unsigned len) { m_len = len; }
void offsetRun(int d) { m_start += d; }
unsigned short truncation() { return m_truncation; }
bool hasHyphen() const { return m_hasEllipsisBoxOrHyphen; }
void setHasHyphen(bool hasHyphen) { m_hasEllipsisBoxOrHyphen = hasHyphen; }
private:
virtual int selectionTop();
virtual int selectionHeight();
public:
virtual IntRect calculateBoundaries() const { return IntRect(x(), y(), width(), height()); }
virtual IntRect selectionRect(int absx, int absy, int startPos, int endPos);
bool isSelected(int startPos, int endPos) const;
virtual void selectionStartEnd(int& sPos, int& ePos);
protected:
virtual void paint(PaintInfo&, int tx, int ty);
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty);
public:
RenderText* textRenderer() const;
private:
virtual void deleteLine(RenderArena*);
virtual void extractLine();
virtual void attachLine();
public:
virtual RenderObject::SelectionState selectionState();
private:
virtual void clearTruncation() { m_truncation = cNoTruncation; }
virtual int placeEllipsisBox(bool flowIsLTR, int visibleLeftEdge, int visibleRightEdge, int ellipsisWidth, bool& foundBox);
public:
virtual bool isLineBreak() const;
void setSpaceAdd(int add) { m_width -= m_toAdd; m_toAdd = add; m_width += m_toAdd; }
private:
virtual bool isInlineTextBox() const { return true; }
public:
virtual int caretMinOffset() const;
virtual int caretMaxOffset() const;
private:
virtual unsigned caretMaxRenderedOffset() const;
int textPos() const;
public:
virtual int offsetForPosition(int x, bool includePartialGlyphs = true) const;
virtual int positionForOffset(int offset) const;
bool containsCaretOffset(int offset) const; // false for offset after line break
// Needs to be public, so the static paintTextWithShadows() function can use it.
static FloatSize applyShadowToGraphicsContext(GraphicsContext*, const ShadowData*, const FloatRect& textRect, bool stroked, bool opaque);
private:
InlineTextBox* m_prevTextBox; // The previous box that also uses our RenderObject
InlineTextBox* m_nextTextBox; // The next box that also uses our RenderObject
int m_start;
unsigned short m_len;
unsigned short m_truncation; // Where to truncate when text overflow is applied. We use special constants to
// denote no truncation (the whole run paints) and full truncation (nothing paints at all).
protected:
void paintCompositionBackground(GraphicsContext*, int tx, int ty, RenderStyle*, const Font&, int startPos, int endPos);
void paintDocumentMarkers(GraphicsContext*, int tx, int ty, RenderStyle*, const Font&, bool background);
void paintCompositionUnderline(GraphicsContext*, int tx, int ty, const CompositionUnderline&);
#if PLATFORM(MAC)
void paintCustomHighlight(int tx, int ty, const AtomicString& type);
#endif
private:
void paintDecoration(GraphicsContext*, int tx, int ty, int decoration, const ShadowData*);
void paintSelection(GraphicsContext*, int tx, int ty, RenderStyle*, const Font&);
void paintSpellingOrGrammarMarker(GraphicsContext*, int tx, int ty, const DocumentMarker&, RenderStyle*, const Font&, bool grammar);
void paintTextMatchMarker(GraphicsContext*, int tx, int ty, const DocumentMarker&, RenderStyle*, const Font&);
void computeRectForReplacementMarker(int tx, int ty, const DocumentMarker&, RenderStyle*, const Font&);
};
inline RenderText* InlineTextBox::textRenderer() const
{
return toRenderText(renderer());
}
} // namespace WebCore
#endif // InlineTextBox_h
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