GUI - Minor tweaks relating to the UI language option

* Add Basque and generic English to the list of language names
* Add a message in the language options panel when the translations fail
to load
* Set fallback language code to en_GB instead of en (so it's clear which
English translation is being used)
* Tweak some log messages from SonicPii18n

Author: SunderB

app/gui/qt/utils/sonicpi_i18n.cpp

@@ -46,7 +46,7 @@ QString SonicPii18n::determineUILanguage(QString lang_pref) {
     QStringList preferred_languages = locale.uiLanguages();
     // If the setting is set to system_language...
       // ...run through the list of preferred languages
-    std::cout << "Looping through preferred ui languages" << std::endl;
+    std::cout << "[GUI] [i18n] - Looping through preferred ui languages" << std::endl;
 
     QString l;
     for (int i = 0; i < preferred_languages.length(); i += 1) {
@@ -68,7 +68,7 @@ QString SonicPii18n::determineUILanguage(QString lang_pref) {
 QStringList SonicPii18n::findSystemLanguages() {
   QLocale locale;
   QStringList preferred_languages = locale.uiLanguages();
-  std::cout << "Looping through preferred ui languages" << std::endl;
+  std::cout << "[GUI] [i18n] - Looping through preferred ui languages" << std::endl;
   for (int i = 0; i < preferred_languages.length(); i += 1) {
     preferred_languages[i] = preferred_languages[i].replace("-", "_");
   }
@@ -108,12 +108,12 @@ bool SonicPii18n::loadTranslations(QString lang) {
   app->removeTranslator(&translator);
   app->removeTranslator(&qtTranslator);
 
-  std::cout << "Loading translations for " << language.toUtf8().constData() << std::endl;
+  std::cout << "[GUI] [i18n] - Loading translations for " << language.toUtf8().constData() << std::endl;
 
   i18n = translator.load("sonic-pi_" + language, ":/lang/") || language == "en_GB" || language == "en" || language == "C";
   if (!i18n) {
-    std::cout << "Error: Failed to load language translation for " << language.toUtf8().constData() << std::endl;
-    language = "en";
+    std::cout << "[GUI] [i18n] - Error: Failed to load language translation for " << language.toUtf8().constData() << std::endl;
+    language = "en_GB";
   }
   app->installTranslator(&translator);
 
@@ -153,14 +153,14 @@ QString SonicPii18n::getNativeLanguageName(QString lang) {
     // language found
     return native_language_names[lang];
   } else {
-    std::cout << "Warning: Predefined language name not found: '" << lang.toUtf8().constData() << "'" << std::endl;
+    std::cout << "[GUI] [i18n] - Warning: Predefined language name not found: '" << lang.toUtf8().constData() << "'" << std::endl;
     // Try using QLocale to find the native language name
     QLocale locale(lang);
     QString name = locale.nativeLanguageName();
     if (name != "C" && name != "") {
       return locale.nativeLanguageName();
     } else {
-      std::cout << "Warning: Invalid language code: '" << lang.toUtf8().constData() << "'" << std::endl;
+      std::cout << "[GUI] [i18n] - Warning: Invalid language code: '" << lang.toUtf8().constData() << "'" << std::endl;
       return lang;
     }
   }

app/gui/qt/widgets/settingswidget.cpp

@@ -600,9 +600,8 @@ void SettingsWidget::updateUILanguage(int index) {
           emit uiLanguageChanged(piSettings->language);
 
           language_details_label->setText(
-            tr("<b>The new language will be applied when you next start Sonic Pi.</b>")
-            + " "
-            + tr("Current UI language: %1").arg(sonicPii18n->getNativeLanguageName(sonicPii18n->currentlyLoadedLanguage()))
+            tr("<b>The new language will be applied when you next start Sonic Pi.</b><br>")
+            + tr("Current UI language: %1\n").arg(sonicPii18n->getNativeLanguageName(sonicPii18n->currentlyLoadedLanguage()))
           );
 
           QMessageBox restartMsgBox(this);
@@ -807,11 +806,17 @@ void SettingsWidget::updateSettings() {
 
 void SettingsWidget::settingsChanged() {
     language_combo->setCurrentIndex(available_languages.indexOf(piSettings->language));
+    QString language_detail_text = "";
+    if (!i18n) {
+      language_detail_text += "<b>Failed to load language translation. Using English (UK).</b>";
+    }
     if (piSettings->language == "system_language") {
-      language_details_label->setText(
-        tr("System languages: %1").arg(sonicPii18n->getNativeLanguageNames(sonicPii18n->getSystemLanguages()).join(", ")) + "\n" + tr("Current UI language: %1").arg(sonicPii18n->getNativeLanguageName(sonicPii18n->currentlyLoadedLanguage()))
+      language_detail_text += (
+        tr("System languages: %1\n").arg(sonicPii18n->getNativeLanguageNames(sonicPii18n->getSystemLanguages()).join(", "))
+        + tr("Current UI language: %1\n").arg(sonicPii18n->getNativeLanguageName(sonicPii18n->currentlyLoadedLanguage()))
       );
     }
+    language_details_label->setText(language_detail_text);
 
     mixer_invert_stereo->setChecked(piSettings->mixer_invert_stereo);
     mixer_force_mono->setChecked(piSettings->mixer_force_mono);

app/server/ruby/bin/qt-doc.rb

@@ -41,12 +41,14 @@
   "da" => "Dansk", # Danish
   "de" => "Deutsch", # German
   "el" => "ελληνικά", # Greek
+  "en" => "English", # English
   "en_AU" => "English (Australian)", # English (Australian)
   "en_GB" => "English (UK)", # English (UK) - default language
   "en_US" => "English (US)", # English (US)
   "eo" => "Esperanto", # Esperanto
   "es" => "Español", # Spanish
   "et" => "Eesti keel", # Estonian
+  "eu" => "Euskara", # Basque
   "fa" => "فارسی", # Persian
   "fi" => "Suomi", # Finnish
   "fr" => "Français", # French