1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the examples of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** BSD License Usage
18** Alternatively, you may use this file under the terms of the BSD license
19** as follows:
20**
21** "Redistribution and use in source and binary forms, with or without
22** modification, are permitted provided that the following conditions are
23** met:
24** * Redistributions of source code must retain the above copyright
25** notice, this list of conditions and the following disclaimer.
26** * Redistributions in binary form must reproduce the above copyright
27** notice, this list of conditions and the following disclaimer in
28** the documentation and/or other materials provided with the
29** distribution.
30** * Neither the name of The Qt Company Ltd nor the names of its
31** contributors may be used to endorse or promote products derived
32** from this software without specific prior written permission.
33**
34**
35** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46**
47** $QT_END_LICENSE$
48**
49****************************************************************************/
50
51#include "localeselector.h"
52
53#include <QLocale>
54
55LocaleSelector::LocaleSelector(QWidget *parent)
56 : QComboBox(parent)
57{
58 int curIndex = -1;
59 int index = 0;
60 for (int _lang = QLocale::C; _lang <= QLocale::LastLanguage; ++_lang) {
61 QLocale::Language lang = static_cast<QLocale::Language>(_lang);
62 const QList<QLocale> locales =
63 QLocale::matchingLocales(language: lang, script: QLocale::AnyScript, country: QLocale::AnyCountry);
64 for (const QLocale &l : locales) {
65 QString label = QLocale::languageToString(language: l.language());
66 label += QLatin1Char('/');
67 label += QLocale::countryToString(country: l.country());
68 // distinguish locales by script, if there are more than one script for a language/country pair
69 if (QLocale::matchingLocales(language: l.language(), script: QLocale::AnyScript, country: l.country()).size() > 1)
70 label += QLatin1String(" (") + QLocale::scriptToString(script: l.script()) + QLatin1Char(')');
71
72 addItem(atext: label, auserData: QVariant::fromValue(value: l));
73
74 if (l.language() == locale().language() && l.country() == locale().country()
75 && (locale().script() == QLocale::AnyScript || l.script() == locale().script())) {
76 curIndex = index;
77 }
78 ++index;
79 }
80 }
81 if (curIndex != -1)
82 setCurrentIndex(curIndex);
83
84 connect(sender: this, signal: QOverload<int>::of(ptr: &LocaleSelector::activated),
85 receiver: this, slot: &LocaleSelector::emitLocaleSelected);
86}
87
88void LocaleSelector::emitLocaleSelected(int index)
89{
90 QVariant v = itemData(index);
91 if (!v.isValid())
92 return;
93 const QLocale l = qvariant_cast<QLocale>(v);
94 emit localeSelected(locale: l);
95}
96

source code of qtbase/examples/widgets/widgets/validators/localeselector.cpp