2 * (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 2000 Dirk Mueller (mueller@kde.org)
4 * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
23 #ifndef InlineTextBox_h
24 #define InlineTextBox_h
26 #include "InlineBox.h"
27 #include "RenderText.h" // so textRenderer() can be inline
31 struct CompositionUnderline;
33 const unsigned short cNoTruncation = USHRT_MAX;
34 const unsigned short cFullTruncation = USHRT_MAX - 1;
36 // Helper functions shared by InlineTextBox / SVGRootInlineBox
37 void updateGraphicsContext(GraphicsContext*, const Color& fillColor, const Color& strokeColor, float strokeThickness, ColorSpace);
38 Color correctedTextColor(Color textColor, Color backgroundColor);
40 class InlineTextBox : public InlineBox {
42 InlineTextBox(RenderObject* obj)
48 , m_truncation(cNoTruncation)
52 InlineTextBox* prevTextBox() const { return m_prevTextBox; }
53 InlineTextBox* nextTextBox() const { return m_nextTextBox; }
54 void setNextTextBox(InlineTextBox* n) { m_nextTextBox = n; }
55 void setPreviousTextBox(InlineTextBox* p) { m_prevTextBox = p; }
57 unsigned start() const { return m_start; }
58 unsigned end() const { return m_len ? m_start + m_len - 1 : m_start; }
59 unsigned len() const { return m_len; }
61 void setStart(unsigned start) { m_start = start; }
62 void setLen(unsigned len) { m_len = len; }
64 void offsetRun(int d) { m_start += d; }
66 unsigned short truncation() { return m_truncation; }
68 bool hasHyphen() const { return m_hasEllipsisBoxOrHyphen; }
69 void setHasHyphen(bool hasHyphen) { m_hasEllipsisBoxOrHyphen = hasHyphen; }
70 static inline bool compareByStart(const InlineTextBox* first, const InlineTextBox* second) { return first->start() < second->start(); }
73 virtual int baselinePosition(FontBaseline) const;
74 virtual int lineHeight() const;
78 int selectionBottom();
79 int selectionHeight();
82 virtual IntRect calculateBoundaries() const { return IntRect(x(), y(), logicalWidth(), logicalHeight()); }
84 virtual IntRect selectionRect(int absx, int absy, int startPos, int endPos);
85 bool isSelected(int startPos, int endPos) const;
86 void selectionStartEnd(int& sPos, int& ePos);
89 virtual void paint(PaintInfo&, int tx, int ty);
90 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty);
93 RenderText* textRenderer() const;
96 virtual void deleteLine(RenderArena*);
97 virtual void extractLine();
98 virtual void attachLine();
101 virtual RenderObject::SelectionState selectionState();
104 virtual void clearTruncation() { m_truncation = cNoTruncation; }
105 virtual int placeEllipsisBox(bool flowIsLTR, int visibleLeftEdge, int visibleRightEdge, int ellipsisWidth, bool& foundBox);
108 virtual bool isLineBreak() const;
110 void setSpaceAdd(int add) { m_logicalWidth -= m_toAdd; m_toAdd = add; m_logicalWidth += m_toAdd; }
113 virtual bool isInlineTextBox() const { return true; }
116 virtual int caretMinOffset() const;
117 virtual int caretMaxOffset() const;
120 virtual unsigned caretMaxRenderedOffset() const;
122 int textPos() const; // returns the x position relative to the left start of the text line.
125 virtual int offsetForPosition(int x, bool includePartialGlyphs = true) const;
126 virtual int positionForOffset(int offset) const;
128 bool containsCaretOffset(int offset) const; // false for offset after line break
130 // Needs to be public, so the static paintTextWithShadows() function can use it.
131 static FloatSize applyShadowToGraphicsContext(GraphicsContext*, const ShadowData*, const FloatRect& textRect, bool stroked, bool opaque, bool horizontal);
134 InlineTextBox* m_prevTextBox; // The previous box that also uses our RenderObject
135 InlineTextBox* m_nextTextBox; // The next box that also uses our RenderObject
138 unsigned short m_len;
140 unsigned short m_truncation; // Where to truncate when text overflow is applied. We use special constants to
141 // denote no truncation (the whole run paints) and full truncation (nothing paints at all).
144 void paintCompositionBackground(GraphicsContext*, const IntPoint& boxOrigin, RenderStyle*, const Font&, int startPos, int endPos);
145 void paintDocumentMarkers(GraphicsContext*, const IntPoint& boxOrigin, RenderStyle*, const Font&, bool background);
146 void paintCompositionUnderline(GraphicsContext*, const IntPoint& boxOrigin, const CompositionUnderline&);
148 void paintCustomHighlight(int tx, int ty, const AtomicString& type);
152 void paintDecoration(GraphicsContext*, const IntPoint& boxOrigin, int decoration, const ShadowData*);
153 void paintSelection(GraphicsContext*, const IntPoint& boxOrigin, RenderStyle*, const Font&);
154 void paintSpellingOrGrammarMarker(GraphicsContext*, const IntPoint& boxOrigin, const DocumentMarker&, RenderStyle*, const Font&, bool grammar);
155 void paintTextMatchMarker(GraphicsContext*, const IntPoint& boxOrigin, const DocumentMarker&, RenderStyle*, const Font&);
156 void computeRectForReplacementMarker(const DocumentMarker&, RenderStyle*, const Font&);
159 inline RenderText* InlineTextBox::textRenderer() const
161 return toRenderText(renderer());
164 } // namespace WebCore
166 #endif // InlineTextBox_h