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 QtSvg 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
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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
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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
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40****************************************************************************/
41
42#include "qsvgfont_p.h"
43
44#ifndef QT_NO_SVG
45
46#include "qpainter.h"
47#include "qpen.h"
48#include "qdebug.h"
49#include "qpicture.h"
50
51QT_BEGIN_NAMESPACE
52
53QSvgGlyph::QSvgGlyph(QChar unicode, const QPainterPath &path, qreal horizAdvX)
54 : m_unicode(unicode), m_path(path), m_horizAdvX(horizAdvX)
55{
56
57}
58
59
60QSvgFont::QSvgFont(qreal horizAdvX)
61 : m_horizAdvX(horizAdvX)
62{
63}
64
65
66QString QSvgFont::familyName() const
67{
68 return m_familyName;
69}
70
71
72void QSvgFont::addGlyph(QChar unicode, const QPainterPath &path, qreal horizAdvX )
73{
74 m_glyphs.insert(unicode, QSvgGlyph(unicode, path,
75 (horizAdvX==-1)?m_horizAdvX:horizAdvX));
76}
77
78
79void QSvgFont::draw(QPainter *p, const QPointF &point, const QString &str, qreal pixelSize, Qt::Alignment alignment) const
80{
81 p->save();
82 p->translate(point);
83 p->scale(pixelSize / m_unitsPerEm, -pixelSize / m_unitsPerEm);
84
85 // Calculate the text width to be used for alignment
86 int textWidth = 0;
87 QString::const_iterator itr = str.constBegin();
88 for ( ; itr != str.constEnd(); ++itr) {
89 QChar unicode = *itr;
90 if (!m_glyphs.contains(*itr)) {
91 unicode = 0;
92 if (!m_glyphs.contains(unicode))
93 continue;
94 }
95 textWidth += static_cast<int>(m_glyphs[unicode].m_horizAdvX);
96 }
97
98 QPoint alignmentOffset(0, 0);
99 if (alignment == Qt::AlignHCenter) {
100 alignmentOffset.setX(-textWidth / 2);
101 } else if (alignment == Qt::AlignRight) {
102 alignmentOffset.setX(-textWidth);
103 }
104
105 p->translate(alignmentOffset);
106
107 // since in SVG the embedded font ain't really a path
108 // the outline has got to stay untransformed...
109 qreal penWidth = p->pen().widthF();
110 penWidth /= (pixelSize/m_unitsPerEm);
111 QPen pen = p->pen();
112 pen.setWidthF(penWidth);
113 p->setPen(pen);
114
115 itr = str.constBegin();
116 for ( ; itr != str.constEnd(); ++itr) {
117 QChar unicode = *itr;
118 if (!m_glyphs.contains(*itr)) {
119 unicode = 0;
120 if (!m_glyphs.contains(unicode))
121 continue;
122 }
123 p->drawPath(m_glyphs[unicode].m_path);
124 p->translate(m_glyphs[unicode].m_horizAdvX, 0);
125 }
126
127 p->restore();
128}
129
130void QSvgFont::setFamilyName(const QString &name)
131{
132 m_familyName = name;
133}
134
135void QSvgFont::setUnitsPerEm(qreal upem)
136{
137 m_unitsPerEm = upem;
138}
139
140QT_END_NAMESPACE
141
142#endif // QT_NO_SVG
143