/** Sets the application's translator to the specified language. */
bool
LanguageSupport::translate(const QString &languageCode)
{
if (!isValidLanguageCode(languageCode))
return false;
static QTranslator *retroshareTranslator = NULL;
if (retroshareTranslator) {
// remove the previous translator, is needed, when switching to en
QApplication::removeTranslator(retroshareTranslator);
delete(retroshareTranslator);
retroshareTranslator = NULL;
removePluginTranslation();
}
if (languageCode == "en")
return true;
/* Attempt to load the translations for Qt's internal widgets from their installed Qt directory. */
QString qtTranslation = QLibraryInfo::location(QLibraryInfo::TranslationsPath) + "/qt_" + languageCode + ".qm";
QTranslator *systemQtTranslator = new QTranslator(rApp);
Q_CHECK_PTR(systemQtTranslator);
if (QFile::exists(qtTranslation) && systemQtTranslator->load(qtTranslation))
QApplication::installTranslator(systemQtTranslator);
else {
/* Attempt to load the translations for Qt's internal widgets from the translations directory in the exe dir. */
qtTranslation = QCoreApplication::applicationDirPath() + "/translations/qt_" + languageCode + ".qm";
if (QFile::exists(qtTranslation) && systemQtTranslator->load(qtTranslation))
QApplication::installTranslator(systemQtTranslator);
else
delete systemQtTranslator;
}
/* Install a translator for RetroShare's UI widgets */
retroshareTranslator = new QTranslator();
Q_CHECK_PTR(retroshareTranslator);
bool result = true;
if (retroshareTranslator->load(EXTERNAL_TRANSLATION_DIR + "/translations/retroshare_" + languageCode + ".qm")) {
QApplication::installTranslator(retroshareTranslator);
} else if (retroshareTranslator->load(":/lang/retroshare_" + languageCode + ".qm")) {
QApplication::installTranslator(retroshareTranslator);
} else {
delete retroshareTranslator;
retroshareTranslator = NULL;
result = false;
}
result = translatePlugins(languageCode) && result;
return result;
}
/** Returns the default language code for the system locale. */
QString
LanguageSupport::defaultLanguageCode()
{
QString language = QLocale::system().name();
if (language != "zh_CN" && language != "zh_TW")
language = language.mid(0, language.indexOf("_"));
if (!isValidLanguageCode(language))
language = "en";
return language;
}