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114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/*
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Copyright © 2014-2015 by The qTox Project
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This file is part of qTox, a Qt-based graphical interface for Tox.
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qTox is libre software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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qTox is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with qTox. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "translator.h"
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#include "src/persistence/settings.h"
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#include <QApplication>
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#include <QString>
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#include <QLocale>
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#include <QTranslator>
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#include <QLibraryInfo>
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#include <QDebug>
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#include <QMutexLocker>
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#include <algorithm>
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QTranslator* Translator::translator{nullptr};
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QVector<Translator::Callback> Translator::callbacks;
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QMutex Translator::lock;
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/**
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* @brief Loads the translations according to the settings or locale.
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*/
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void Translator::translate()
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{
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QMutexLocker locker{&lock};
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if (!translator)
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translator = new QTranslator();
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// Load translations
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QCoreApplication::removeTranslator(translator);
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QString locale;
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if ((locale = Settings::getInstance().getTranslation()).isEmpty())
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locale = QLocale::system().name().section('_', 0, 0);
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if (locale != "en")
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{
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if (translator->load(locale, ":translations/"))
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{
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qDebug() << "Loaded translation" << locale;
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// system menu translation
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QTranslator *qtTranslator = new QTranslator();
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QString s_locale = "qt_"+locale;
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QString location = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
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if (qtTranslator->load(s_locale, location))
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{
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QApplication::installTranslator(qtTranslator);
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qDebug() << "System translation loaded" << locale;
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}
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else
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{
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qDebug() << "System translation not loaded" << locale;
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}
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}
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else
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{
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qDebug() << "Error loading translation" << locale;
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}
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QCoreApplication::installTranslator(translator);
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}
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// After the language is changed from RTL to LTR, the layout direction isn't
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// always restored
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const QString direction = QApplication::tr("LTR",
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"Translate this string to the string 'RTL' in"
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" right-to-left languages (for example Hebrew and"
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" Arabic) to get proper widget layout");
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QGuiApplication::setLayoutDirection(
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direction == "RTL" ? Qt::RightToLeft : Qt::LeftToRight);
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for (auto pair : callbacks)
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pair.second();
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}
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/**
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* @brief Register a function to be called when the UI needs to be retranslated.
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* @param f Function, wich will called.
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* @param owner Widget to retanslate.
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*/
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void Translator::registerHandler(std::function<void()> f, void *owner)
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{
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QMutexLocker locker{&lock};
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callbacks.push_back({owner, f});
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}
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/**
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* @brief Unregisters all handlers of an owner.
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* @param owner Owner to unregister.
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*/
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void Translator::unregister(void *owner)
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{
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QMutexLocker locker{&lock};
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callbacks.erase(std::remove_if(begin(callbacks), end(callbacks),
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[=](const Callback& c){return c.first==owner;}), end(callbacks));
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}
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