File: qfontengine_s60_p.h

package info (click to toggle)
qt4-x11 4:4.8.7+dfsg-18
  • links: PTS, VCS
  • area: main
  • in suites: buster, sid
  • size: 749,772 kB
  • sloc: cpp: 2,694,360; ansic: 384,353; python: 25,859; sh: 19,554; xml: 17,092; perl: 14,767; yacc: 5,383; asm: 5,038; makefile: 1,258; lex: 555; ruby: 526; objc: 347; cs: 112; pascal: 112; php: 54; sed: 34
file content (168 lines) | stat: -rw-r--r-- 5,770 bytes parent folder | download | duplicates (2)
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
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QFONTENGINE_S60_P_H
#define QFONTENGINE_S60_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "qconfig.h"
#include <private/qfontengine_p.h>
#include "qsize.h"
#include <openfont.h>

// The glyph outline code is intentionally disabled. It will be reactivated as
// soon as the glyph outline API is backported from Symbian(^4) to Symbian(^3).
#if 0
#define Q_SYMBIAN_HAS_GLYPHOUTLINE_API
#endif

class CFont;

QT_BEGIN_NAMESPACE

// ..gives us access to truetype tables
class QSymbianTypeFaceExtras
{
public:
    QSymbianTypeFaceExtras(CFont* cFont, COpenFont *openFont = 0);
    ~QSymbianTypeFaceExtras();

    QByteArray getSfntTable(uint tag) const;
    bool getSfntTableData(uint tag, uchar *buffer, uint *length) const;
    const uchar *cmap() const;
    CFont *fontOwner() const;
    bool isSymbolCMap() const;
    QFixed unitsPerEm() const;
    static bool symbianFontTableApiAvailable();

private:
    CFont* m_cFont;
    mutable bool m_symbolCMap;
    mutable QByteArray m_cmapTable;
    mutable QFixed m_unitsPerEm;

    // m_openFont and m_openFont are used if Symbian does not provide
    // the Font Table API
    COpenFont *m_openFont;
    mutable MOpenFontTrueTypeExtension *m_trueTypeExtension;
    mutable int m_cmapSize;
};

class QFontEngineS60 : public QFontEngine
{
public:
    QFontEngineS60(const QFontDef &fontDef, const QSymbianTypeFaceExtras *extras);
    ~QFontEngineS60();

    QFixed emSquareSize() const;
    bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;
    void recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags flags) const;

    void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs,
                         QPainterPath *path, QTextItem::RenderFlags flags);

    QImage alphaMapForGlyph(glyph_t glyph);

    glyph_metrics_t boundingBox(const QGlyphLayout &glyphs);
    glyph_metrics_t boundingBox_const(glyph_t glyph) const; // Const correctnes quirk.
    glyph_metrics_t boundingBox(glyph_t glyph);

    QFixed ascent() const;
    QFixed descent() const;
    QFixed leading() const;
    qreal maxCharWidth() const;
    qreal minLeftBearing() const { return 0; }
    qreal minRightBearing() const { return 0; }

    QByteArray getSfntTable(uint tag) const;
    bool getSfntTableData(uint tag, uchar *buffer, uint *length) const;

    static qreal pixelsToPoints(qreal pixels, Qt::Orientation orientation = Qt::Horizontal);
    static qreal pointsToPixels(qreal points, Qt::Orientation orientation = Qt::Horizontal);

    const char *name() const;

    bool canRender(const QChar *string, int len);

    Type type() const;

    void getCharacterData(glyph_t glyph, TOpenFontCharMetrics& metrics, const TUint8*& bitmap, TSize& bitmapSize) const;
    void setFontScale(qreal scale);

private:
    friend class QFontPrivate;
    friend class QSymbianVGFontGlyphCache;

    QFixed glyphAdvance(HB_Glyph glyph) const;
    CFont *fontWithSize(qreal size) const;
    static void releaseFont(CFont *&font);

    const QSymbianTypeFaceExtras *m_extras;
    CFont* m_originalFont;
    const qreal m_originalFontSizeInPixels;
    CFont* m_scaledFont;
    qreal m_scaledFontSizeInPixels;
    CFont* m_activeFont;
};

class QFontEngineMultiS60 : public QFontEngineMulti
{
public:
    QFontEngineMultiS60(QFontEngine *first, int script, const QStringList &fallbackFamilies);
    void loadEngine(int at);

    int m_script;
    QStringList m_fallbackFamilies;
};

QT_END_NAMESPACE

#endif // QFONTENGINE_S60_P_H