LocaleDialog::LocaleDialog(QWidget* parent) :
QDialog(parent, Qt::WindowTitleHint | Qt::MSWindowsFixedSizeDialogHint | Qt::WindowSystemMenuHint | Qt::WindowCloseButtonHint)
{
QString title = parent ? parent->window()->windowTitle() : QString();
setWindowTitle(!title.isEmpty() ? title : QCoreApplication::applicationName());
QLabel* text = new QLabel(tr("Select application language:"), this);
m_translations = new QComboBox(this);
m_translations->addItem(tr("<System Language>"), "");
QString translation;
QStringList translations = findTranslations();
foreach (translation, translations) {
if (translation.startsWith("qt")) {
continue;
}
translation.remove(m_appname);
m_translations->addItem(languageName(translation), translation);
}
int index = qMax(0, m_translations->findData(m_current));
m_translations->setCurrentIndex(index);
QDialogButtonBox* buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal, this);
connect(buttons, SIGNAL(accepted()), this, SLOT(accept()));
connect(buttons, SIGNAL(rejected()), this, SLOT(reject()));
QVBoxLayout* layout = new QVBoxLayout(this);
layout->setSizeConstraint(QLayout::SetFixedSize);
layout->addWidget(text);
layout->addWidget(m_translations);
layout->addWidget(buttons);
}
void LocaleDialog::loadTranslator(const QString& name, const QStringList& datadirs)
{
m_appname = name;
// Find translator path
QStringList paths = datadirs;
if (paths.isEmpty()) {
QString appdir = QCoreApplication::applicationDirPath();
paths.append(appdir);
paths.append(appdir + "/../share/" + QCoreApplication::applicationName().toLower());
paths.append(appdir + "/../Resources");
}
foreach (const QString& path, paths) {
if (QFile::exists(path + "/translations/")) {
m_path = path + "/translations/";
break;
}
}
// Find current locale
m_current = QSettings().value("Locale/Language").toString();
QString current = !m_current.isEmpty() ? m_current : QLocale::system().name();
QStringList translations = findTranslations();
if (!translations.contains(m_appname + current)) {
current = current.left(2);
if (!translations.contains(m_appname + current)) {
current.clear();
}
}
if (!current.isEmpty()) {
QLocale::setDefault(current);
} else {
current = "en";
}
// Load translators
static QTranslator qt_translator;
if (translations.contains("qt_" + current) || translations.contains("qt_" + current.left(2))) {
qt_translator.load("qt_" + current, m_path);
} else {
qt_translator.load("qt_" + current, QLibraryInfo::location(QLibraryInfo::TranslationsPath));
}
QCoreApplication::installTranslator(&qt_translator);
static QTranslator translator;
translator.load(m_appname + current, m_path);
QCoreApplication::installTranslator(&translator);
// Work around bug in Qt 5 where text direction is not loaded
QApplication::setLayoutDirection(QLocale(current).textDirection());
}
bool LanguageSelection::findTranslations()
{
return findTranslations( PathList{QCoreApplication::applicationDirPath()} );
}
