Merge pull request #3349 from FearlessTobi/translationnns

[WIP] yuzu: Port translation support from Citra v2

1 files changed, 42 insertions, 0 deletions

diff --git a/src/yuzu/main.cpp b/src/yuzu/main.cpp
index 6909d65d0..31a635176 100644
--- a/src/yuzu/main.cpp
+++ b/src/yuzu/main.cpp
@@ -191,6 +191,8 @@ GMainWindow::GMainWindow()
       provider(std::make_unique<FileSys::ManualContentProvider>()) {
     InitializeLogging();
 
+    LoadTranslation();
+
     setAcceptDrops(true);
     ui.setupUi(this);
     statusBar()->hide();
@@ -2048,6 +2050,9 @@ void GMainWindow::OnConfigure() {
     const bool old_discord_presence = UISettings::values.enable_discord_presence;
 
     ConfigureDialog configure_dialog(this, hotkey_registry);
+    connect(&configure_dialog, &ConfigureDialog::LanguageChanged, this,
+            &GMainWindow::OnLanguageChanged);
+
     const auto result = configure_dialog.exec();
     if (result != QDialog::Accepted) {
         return;
@@ -2620,6 +2625,43 @@ void GMainWindow::UpdateUITheme() {
     QIcon::setThemeSearchPaths(theme_paths);
 }
 
+void GMainWindow::LoadTranslation() {
+    // If the selected language is English, no need to install any translation
+    if (UISettings::values.language == QStringLiteral("en")) {
+        return;
+    }
+
+    bool loaded;
+
+    if (UISettings::values.language.isEmpty()) {
+        // If the selected language is empty, use system locale
+        loaded = translator.load(QLocale(), {}, {}, QStringLiteral(":/languages/"));
+    } else {
+        // Otherwise load from the specified file
+        loaded = translator.load(UISettings::values.language, QStringLiteral(":/languages/"));
+    }
+
+    if (loaded) {
+        qApp->installTranslator(&translator);
+    } else {
+        UISettings::values.language = QStringLiteral("en");
+    }
+}
+
+void GMainWindow::OnLanguageChanged(const QString& locale) {
+    if (UISettings::values.language != QStringLiteral("en")) {
+        qApp->removeTranslator(&translator);
+    }
+
+    UISettings::values.language = locale;
+    LoadTranslation();
+    ui.retranslateUi(this);
+    UpdateWindowTitle();
+
+    if (emulation_running)
+        ui.action_Start->setText(tr("Continue"));
+}
+
 void GMainWindow::SetDiscordEnabled([[maybe_unused]] bool state) {
 #ifdef USE_DISCORD_PRESENCE
     if (state) {