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
|
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qfontenginemultifontconfig_p.h"
#include <QtGui/private/qfontengine_ft_p.h>
QT_BEGIN_NAMESPACE
QFontEngineMultiFontConfig::QFontEngineMultiFontConfig(QFontEngine *fe, int script)
: QFontEngineMultiBasicImpl(fe, script)
{
}
QFontEngineMultiFontConfig::~QFontEngineMultiFontConfig()
{
Q_FOREACH (FcPattern *pattern, cachedMatchPatterns) {
if (pattern)
FcPatternDestroy(pattern);
}
}
bool QFontEngineMultiFontConfig::shouldLoadFontEngineForCharacter(int at, uint ucs4) const
{
bool charSetHasChar = true;
FcPattern *matchPattern = getMatchPatternForFallback(at - 1);
if (matchPattern != 0) {
FcCharSet *charSet;
FcPatternGetCharSet(matchPattern, FC_CHARSET, 0, &charSet);
charSetHasChar = FcCharSetHasChar(charSet, ucs4);
}
return charSetHasChar;
}
FcPattern * QFontEngineMultiFontConfig::getMatchPatternForFallback(int fallBackIndex) const
{
Q_ASSERT(fallBackIndex < fallbackFamilyCount());
if (engines.size() - 1 > cachedMatchPatterns.size())
cachedMatchPatterns.resize(engines.size() - 1);
FcPattern *ret = cachedMatchPatterns.at(fallBackIndex);
if (ret)
return ret;
FcPattern *requestPattern = FcPatternCreate();
FcValue value;
value.type = FcTypeString;
QByteArray cs = fallbackFamilyAt(fallBackIndex).toUtf8();
value.u.s = reinterpret_cast<const FcChar8 *>(cs.data());
FcPatternAdd(requestPattern, FC_FAMILY, value, true);
FcResult result;
ret = FcFontMatch(0, requestPattern, &result);
cachedMatchPatterns.insert(fallBackIndex, ret);
FcPatternDestroy(requestPattern);
return ret;
}
QT_END_NAMESPACE
|
