citra_qt: Backport review comments from the yuzu translation PR (#5465)

README.md

@@ -25,7 +25,7 @@ Most of the development happens on GitHub. It's also where [our central reposito
 
 If you want to contribute please take a look at the [Contributor's Guide](https://github.com/citra-emu/citra/wiki/Contributing) and [Developer Information](https://github.com/citra-emu/citra/wiki/Developer-Information). You should also contact any of the developers in the forum in order to know about the current state of the emulator because the [TODO list](https://docs.google.com/document/d/1SWIop0uBI9IW8VGg97TAtoT_CHNoP42FzYmvG1F4QDA) isn't maintained anymore.
 
-If you want to contribute to the user interface translation, please checkout [citra project on transifex](https://www.transifex.com/citra/citra). We centralize the translation work there, and periodically upstream translation.
+If you want to contribute to the user interface translation, please check out the [citra project on transifex](https://www.transifex.com/citra/citra). We centralize the translation work there, and periodically upstream translations.
 
 ### Building
 

src/citra_qt/CMakeLists.txt

@@ -223,8 +223,8 @@ target_sources(citra-qt
     PRIVATE
         ${COMPAT_LIST}
         ${ICONS}
-        ${THEMES}
         ${LANGUAGES}
+        ${THEMES}
 )
 
 if (APPLE)

src/citra_qt/configuration/configure_ui.cpp

@@ -9,23 +9,7 @@
 
 ConfigureUi::ConfigureUi(QWidget* parent) : QWidget(parent), ui(new Ui::ConfigureUi) {
     ui->setupUi(this);
-    ui->language_combobox->addItem(tr("<System>"), QString{});
+    InitializeLanguageComboBox();
-    ui->language_combobox->addItem(tr("English"), QStringLiteral("en"));
-    QDirIterator it(QStringLiteral(":/languages"), QDirIterator::NoIteratorFlags);
-    while (it.hasNext()) {
-        QString locale = it.next();
-        locale.truncate(locale.lastIndexOf(QLatin1Char{'.'}));
-        locale.remove(0, locale.lastIndexOf(QLatin1Char{'/'}) + 1);
-        QString lang = QLocale::languageToString(QLocale(locale).language());
-        ui->language_combobox->addItem(lang, locale);
-    }
-
-    // Unlike other configuration changes, interface language changes need to be reflected on the
-    // interface immediately. This is done by passing a signal to the main window, and then
-    // retranslating when passing back.
-    connect(ui->language_combobox,
-            static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
-            &ConfigureUi::OnLanguageChanged);
 
     for (const auto& theme : UISettings::themes) {
         ui->theme_combobox->addItem(QString::fromUtf8(theme.first),
@@ -37,6 +21,25 @@ ConfigureUi::ConfigureUi(QWidget* parent) : QWidget(parent), ui(new Ui::Configur
 
 ConfigureUi::~ConfigureUi() = default;
 
+void ConfigureUi::InitializeLanguageComboBox() {
+    ui->language_combobox->addItem(tr("<System>"), QString{});
+    ui->language_combobox->addItem(tr("English"), QStringLiteral("en"));
+    QDirIterator it(QStringLiteral(":/languages"), QDirIterator::NoIteratorFlags);
+    while (it.hasNext()) {
+        QString locale = it.next();
+        locale.truncate(locale.lastIndexOf(QLatin1Char{'.'}));
+        locale.remove(0, locale.lastIndexOf(QLatin1Char{'/'}) + 1);
+        const QString lang = QLocale::languageToString(QLocale(locale).language());
+        ui->language_combobox->addItem(lang, locale);
+    }
+
+    // Unlike other configuration changes, interface language changes need to be reflected on the
+    // interface immediately. This is done by passing a signal to the main window, and then
+    // retranslating when passing back.
+    connect(ui->language_combobox, qOverload<int>(&QComboBox::currentIndexChanged), this,
+            &ConfigureUi::OnLanguageChanged);
+}
+
 void ConfigureUi::SetConfiguration() {
     ui->theme_combobox->setCurrentIndex(ui->theme_combobox->findData(UISettings::values.theme));
     ui->language_combobox->setCurrentIndex(

src/citra_qt/configuration/configure_ui.h

@@ -18,6 +18,7 @@ public:
     explicit ConfigureUi(QWidget* parent = nullptr);
     ~ConfigureUi() override;
 
+    void InitializeLanguageComboBox();
     void ApplyConfiguration();
     void RetranslateUI();
     void SetConfiguration();