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
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTEXTUREGLYPHCACHE_P_H
#define QTEXTUREGLYPHCACHE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qhash.h>
#include <qimage.h>
#include <qobject.h>
#include <qtransform.h>
#include <private/qfontengineglyphcache_p.h>
#if defined(Q_OS_VXWORKS) && defined(m_type)
# undef m_type
#endif
struct glyph_metrics_t;
typedef unsigned int glyph_t;
QT_BEGIN_NAMESPACE
class QTextItemInt;
class Q_GUI_EXPORT QTextureGlyphCache : public QFontEngineGlyphCache
{
public:
QTextureGlyphCache(QFontEngineGlyphCache::Type type, const QTransform &matrix)
: QFontEngineGlyphCache(matrix), m_w(0), m_h(0), m_cx(0), m_cy(0), m_type(type) { }
virtual ~QTextureGlyphCache() { }
struct Coord {
int x;
int y;
int w;
int h;
int baseLineX;
int baseLineY;
};
void populate(const QTextItemInt &ti,
const QVarLengthArray<glyph_t> &glyphs,
const QVarLengthArray<QFixedPoint> &positions);
virtual void createTextureData(int width, int height) = 0;
virtual void resizeTextureData(int width, int height) = 0;
virtual int glyphMargin() const { return 0; }
QFontEngineGlyphCache::Type cacheType() const { return m_type; }
virtual void fillTexture(const Coord &coord, glyph_t glyph) = 0;
inline void createCache(int width, int height) {
m_w = width;
m_h = height;
createTextureData(width, height);
}
inline bool isNull() const { return m_w <= 0 || m_h <= 0; }
QHash<glyph_t, Coord> coords;
QImage textureMapForGlyph(glyph_t g) const;
protected:
const QTextItemInt *m_current_textitem;
int m_w; // image width
int m_h; // image height
int m_cx; // current x
int m_cy; // current y
QFontEngineGlyphCache::Type m_type;
};
class QImageTextureGlyphCache : public QTextureGlyphCache
{
public:
QImageTextureGlyphCache(QFontEngineGlyphCache::Type type, const QTransform &matrix)
: QTextureGlyphCache(type, matrix) { }
virtual int glyphMargin() const;
virtual void createTextureData(int width, int height);
virtual void resizeTextureData(int width, int height);
virtual void fillTexture(const Coord &c, glyph_t glyph);
inline const QImage &image() const { return m_image; }
private:
QImage m_image;
};
QT_END_NAMESPACE
#endif
|
