1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2009, 2010, 2011 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
#include "TextRun.h"
namespace WebCore {
struct CompositionUnderline;
struct DocumentMarker;
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)
{
}
virtual void destroy(RenderArena*);
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; }
bool canHaveLeadingExpansion() const { return m_hasSelectedChildrenOrCanHaveLeadingExpansion; }
void setCanHaveLeadingExpansion(bool canHaveLeadingExpansion) { m_hasSelectedChildrenOrCanHaveLeadingExpansion = canHaveLeadingExpansion; }
static inline bool compareByStart(const InlineTextBox* first, const InlineTextBox* second) { return first->start() < second->start(); }
virtual int baselinePosition(FontBaseline) const;
virtual int lineHeight() const;
bool getEmphasisMarkPosition(RenderStyle*, TextEmphasisPosition&) const;
IntRect logicalOverflowRect() const;
void setLogicalOverflowRect(const IntRect&);
int logicalTopVisualOverflow() const { return logicalOverflowRect().y(); }
int logicalBottomVisualOverflow() const { return logicalOverflowRect().maxY(); }
int logicalLeftVisualOverflow() const { return logicalOverflowRect().x(); }
int logicalRightVisualOverflow() const { return logicalOverflowRect().maxX(); }
private:
int selectionTop();
int selectionBottom();
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;
void selectionStartEnd(int& sPos, int& ePos);
protected:
virtual void paint(PaintInfo&, int tx, int ty, int lineTop, int lineBottom);
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, int lineTop, int lineBottom);
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 float placeEllipsisBox(bool flowIsLTR, float visibleLeftEdge, float visibleRightEdge, float ellipsisWidth, bool& foundBox);
public:
virtual bool isLineBreak() const;
void setExpansion(float expansion) { m_logicalWidth -= m_expansion; m_expansion = expansion; m_logicalWidth += m_expansion; }
private:
virtual bool isInlineTextBox() const { return true; }
public:
virtual int caretMinOffset() const;
virtual int caretMaxOffset() const;
private:
virtual unsigned caretMaxRenderedOffset() const;
float textPos() const; // returns the x position relative to the left start of the text line.
public:
virtual int offsetForPosition(float x, bool includePartialGlyphs = true) const;
virtual float 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, bool horizontal);
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*, const FloatPoint& boxOrigin, RenderStyle*, const Font&, int startPos, int endPos);
void paintDocumentMarkers(GraphicsContext*, const FloatPoint& boxOrigin, RenderStyle*, const Font&, bool background);
void paintCompositionUnderline(GraphicsContext*, const FloatPoint& boxOrigin, const CompositionUnderline&);
#if PLATFORM(MAC)
void paintCustomHighlight(int tx, int ty, const AtomicString& type);
#endif
private:
void paintDecoration(GraphicsContext*, const FloatPoint& boxOrigin, int decoration, const ShadowData*);
void paintSelection(GraphicsContext*, const FloatPoint& boxOrigin, RenderStyle*, const Font&);
void paintSpellingOrGrammarMarker(GraphicsContext*, const FloatPoint& boxOrigin, const DocumentMarker&, RenderStyle*, const Font&, bool grammar);
void paintTextMatchMarker(GraphicsContext*, const FloatPoint& boxOrigin, const DocumentMarker&, RenderStyle*, const Font&);
void computeRectForReplacementMarker(const DocumentMarker&, RenderStyle*, const Font&);
TextRun::ExpansionBehavior expansionBehavior() const
{
return (canHaveLeadingExpansion() ? TextRun::AllowLeadingExpansion : TextRun::ForbidLeadingExpansion)
| (m_expansion && nextLeafChild() ? TextRun::AllowTrailingExpansion : TextRun::ForbidTrailingExpansion);
}
};
inline RenderText* InlineTextBox::textRenderer() const
{
return toRenderText(renderer());
}
} // namespace WebCore
#endif // InlineTextBox_h
|
