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
|
/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QFONTENGINE_CORETEXT_P_H
#define QFONTENGINE_CORETEXT_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 <private/qfontengine_p.h>
#include <private/qcore_mac_p.h>
#ifndef Q_OS_IOS
#include <ApplicationServices/ApplicationServices.h>
#else
#include <CoreText/CoreText.h>
#include <CoreGraphics/CoreGraphics.h>
#endif
QT_BEGIN_NAMESPACE
class QCoreTextFontEngine : public QFontEngine
{
public:
QCoreTextFontEngine(CTFontRef font, const QFontDef &def);
QCoreTextFontEngine(CGFontRef font, const QFontDef &def);
~QCoreTextFontEngine();
virtual glyph_t glyphIndex(uint ucs4) const;
virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, ShaperFlags flags) const;
virtual void recalcAdvances(QGlyphLayout *, ShaperFlags) const;
virtual glyph_metrics_t boundingBox(const QGlyphLayout &glyphs);
virtual glyph_metrics_t boundingBox(glyph_t glyph);
virtual QFixed ascent() const;
virtual QFixed descent() const;
virtual QFixed leading() const;
virtual QFixed xHeight() const;
virtual qreal maxCharWidth() const;
virtual QFixed averageCharWidth() const;
virtual void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int numGlyphs,
QPainterPath *path, QTextItem::RenderFlags);
virtual bool canRender(const QChar *string, int len) const;
virtual int synthesized() const { return synthesisFlags; }
virtual bool supportsSubPixelPositions() const { return true; }
void draw(CGContextRef ctx, qreal x, qreal y, const QTextItemInt &ti, int paintDeviceHeight);
virtual FaceId faceId() const;
virtual bool getSfntTableData(uint /*tag*/, uchar * /*buffer*/, uint * /*length*/) const;
virtual void getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics);
virtual QImage alphaMapForGlyph(glyph_t, QFixed subPixelPosition);
virtual QImage alphaMapForGlyph(glyph_t glyph, QFixed subPixelPosition, const QTransform &t);
virtual QImage alphaRGBMapForGlyph(glyph_t, QFixed subPixelPosition, const QTransform &t);
glyph_metrics_t alphaMapBoundingBox(glyph_t glyph, QFixed, const QTransform &matrix, GlyphFormat);
virtual QImage bitmapForGlyph(glyph_t, QFixed subPixelPosition, const QTransform &t);
virtual qreal minRightBearing() const;
virtual qreal minLeftBearing() const;
virtual QFixed emSquareSize() const;
bool supportsTransformation(const QTransform &transform) const;
virtual QFontEngine *cloneWithSize(qreal pixelSize) const;
virtual int glyphMargin(QFontEngine::GlyphFormat format) { Q_UNUSED(format); return 0; }
virtual QFontEngine::Properties properties() const;
static bool supportsColorGlyphs()
{
#if defined(Q_OS_IOS)
return true;
#elif MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1070
return &CTFontDrawGlyphs;
#else
return true;
#endif
#else
return false;
#endif
}
static bool ct_getSfntTable(void *user_data, uint tag, uchar *buffer, uint *length);
static QFont::Weight qtWeightFromCFWeight(float value);
static int antialiasingThreshold;
static QFontEngine::GlyphFormat defaultGlyphFormat;
private:
void init();
QImage imageForGlyph(glyph_t glyph, QFixed subPixelPosition, bool colorful, const QTransform &m);
CTFontRef ctfont;
CGFontRef cgFont;
int synthesisFlags;
CGAffineTransform transform;
QFixed avgCharWidth;
};
CGAffineTransform qt_transform_from_fontdef(const QFontDef &fontDef);
QT_END_NAMESPACE
#endif // QFONTENGINE_CORETEXT_P_H
|
