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 |
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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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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 |
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36 | ** |
37 | ** |
38 | ** $QT_END_LICENSE$ |
39 | ** |
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 | |
51 | QT_BEGIN_NAMESPACE |
52 | |
53 | QSvgGlyph::QSvgGlyph(QChar unicode, const QPainterPath &path, qreal horizAdvX) |
54 | : m_unicode(unicode), m_path(path), m_horizAdvX(horizAdvX) |
55 | { |
56 | |
57 | } |
58 | |
59 | |
60 | QSvgFont::QSvgFont(qreal horizAdvX) |
61 | : m_horizAdvX(horizAdvX) |
62 | { |
63 | } |
64 | |
65 | |
66 | QString QSvgFont::familyName() const |
67 | { |
68 | return m_familyName; |
69 | } |
70 | |
71 | |
72 | void 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 | |
79 | void 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 | |
130 | void QSvgFont::setFamilyName(const QString &name) |
131 | { |
132 | m_familyName = name; |
133 | } |
134 | |
135 | void QSvgFont::setUnitsPerEm(qreal upem) |
136 | { |
137 | m_unitsPerEm = upem; |
138 | } |
139 | |
140 | QT_END_NAMESPACE |
141 | |
142 | #endif // QT_NO_SVG |
143 | |