Qt 4.8
qrawfont.h
Go to the documentation of this file.
1 /****************************************************************************
2 **
3 ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
5 **
6 ** This file is part of the QtGui module of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia. For licensing terms and
14 ** conditions see http://qt.digia.com/licensing. For further information
15 ** use the contact form at http://qt.digia.com/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 2.1 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 2.1 requirements
23 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24 **
25 ** In addition, as a special exception, Digia gives you certain additional
26 ** rights. These rights are described in the Digia Qt LGPL Exception
27 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
28 **
29 ** GNU General Public License Usage
30 ** Alternatively, this file may be used under the terms of the GNU
31 ** General Public License version 3.0 as published by the Free Software
32 ** Foundation and appearing in the file LICENSE.GPL included in the
33 ** packaging of this file. Please review the following information to
34 ** ensure the GNU General Public License version 3.0 requirements will be
35 ** met: http://www.gnu.org/copyleft/gpl.html.
36 **
37 **
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41 
42 #ifndef QRAWFONT_H
43 #define QRAWFONT_H
44 
45 #include <QtCore/qstring.h>
46 #include <QtCore/qiodevice.h>
47 #include <QtCore/qglobal.h>
48 #include <QtCore/qobject.h>
49 #include <QtCore/qpoint.h>
50 #include <QtGui/qfont.h>
51 #include <QtGui/qtransform.h>
52 #include <QtGui/qfontdatabase.h>
53 
54 #if !defined(QT_NO_RAWFONT)
55 
57 
59 
60 QT_MODULE(Gui)
61 
62 class QRawFontPrivate;
64 {
65 public:
68  SubPixelAntialiasing
69  };
70 
71  QRawFont();
72  QRawFont(const QString &fileName,
75  QRawFont(const QByteArray &fontData,
78  QRawFont(const QRawFont &other);
79  ~QRawFont();
80 
81  bool isValid() const;
82 
83  QRawFont &operator=(const QRawFont &other);
84 
85  bool operator==(const QRawFont &other) const;
86  inline bool operator!=(const QRawFont &other) const
87  { return !operator==(other); }
88 
89  QString familyName() const;
90  QString styleName() const;
91 
92  QFont::Style style() const;
93  int weight() const;
94 
95  QVector<quint32> glyphIndexesForString(const QString &text) const;
96  QVector<QPointF> advancesForGlyphIndexes(const QVector<quint32> &glyphIndexes) const;
97  bool glyphIndexesForChars(const QChar *chars, int numChars, quint32 *glyphIndexes, int *numGlyphs) const;
98  bool advancesForGlyphIndexes(const quint32 *glyphIndexes, QPointF *advances, int numGlyphs) const;
99 
100  QImage alphaMapForGlyph(quint32 glyphIndex,
101  AntialiasingType antialiasingType = SubPixelAntialiasing,
102  const QTransform &transform = QTransform()) const;
103  QPainterPath pathForGlyph(quint32 glyphIndex) const;
104 
105  void setPixelSize(qreal pixelSize);
106  qreal pixelSize() const;
107 
108  QFont::HintingPreference hintingPreference() const;
109 
110  qreal ascent() const;
111  qreal descent() const;
112  qreal leading() const;
113  qreal xHeight() const;
114  qreal averageCharWidth() const;
115  qreal maxCharWidth() const;
116 
117  qreal unitsPerEm() const;
118 
119  void loadFromFile(const QString &fileName,
120  qreal pixelSize,
121  QFont::HintingPreference hintingPreference);
122 
123  void loadFromData(const QByteArray &fontData,
124  qreal pixelSize,
125  QFont::HintingPreference hintingPreference);
126 
127  bool supportsCharacter(quint32 ucs4) const;
128  bool supportsCharacter(QChar character) const;
129  QList<QFontDatabase::WritingSystem> supportedWritingSystems() const;
130 
131  QByteArray fontTable(const char *tagName) const;
132 
133  static QRawFont fromFont(const QFont &font,
135 
136 private:
137  friend class QRawFontPrivate;
139 };
140 
142 
144 
145 #endif // QT_NO_RAWFONT
146 
147 #endif // QRAWFONT_H
HintingPreference
This enum describes the different levels of hinting that can be applied to glyphs to improve legibili...
Definition: qfont.h:96
double qreal
Definition: qglobal.h:1193
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
AntialiasingType
This enum represents the different ways a glyph can be rasterized in the function alphaMapForGlyph()...
Definition: qrawfont.h:66
#define QT_MODULE(x)
Definition: qglobal.h:2783
#define QT_BEGIN_HEADER
Definition: qglobal.h:136
The QPainterPath class provides a container for painting operations, enabling graphical shapes to be ...
Definition: qpainterpath.h:67
#define Q_GUI_EXPORT
Definition: qglobal.h:1450
The QByteArray class provides an array of bytes.
Definition: qbytearray.h:135
The QPointF class defines a point in the plane using floating point precision.
Definition: qpoint.h:214
The QString class provides a Unicode character string.
Definition: qstring.h:83
The QChar class provides a 16-bit Unicode character.
Definition: qchar.h:72
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
static float pixelSize(const QFontDef &request, int dpi)
Definition: qfont_win.cpp:80
The QImage class provides a hardware-independent image representation that allows direct access to th...
Definition: qimage.h:87
Style
This enum describes the different styles of glyphs that are used to display text. ...
Definition: qfont.h:111
bool operator!=(const QRawFont &other) const
Returns true if this QRawFont is not equal to other.
Definition: qrawfont.h:86
The QRawFont class provides access to a single physical instance of a font.
Definition: qrawfont.h:63
The QFont class specifies a font used for drawing text.
Definition: qfont.h:64
unsigned int quint32
Definition: qglobal.h:938
#define QT_END_HEADER
Definition: qglobal.h:137
static QString fileName(const QString &fileUrl)
bool operator==(QBool b1, bool b2)
Definition: qglobal.h:2023
QExplicitlySharedDataPointer< QRawFontPrivate > d
Definition: qrawfont.h:138
#define text
Definition: qobjectdefs.h:80
The QTransform class specifies 2D transformations of a coordinate system.
Definition: qtransform.h:65