GUI: Add UI language option

.gitignore

@@ -61,6 +61,7 @@ app/gui/qt/moc_mainwindow.cpp
 app/gui/qt/moc_sonicpiudpserver.cpp
 app/gui/qt/qrc_SonicPi.cpp
 app/gui/qt/utils/ruby_help.h
+app/gui/qt/utils/lang_list.h
 app/gui/qt/help/*.html
 app/gui/qt/help_files.qrc
 app/gui/qt/lang/*.qm

app/gui/qt/CMakeLists.txt

@@ -74,12 +74,15 @@ set(QT_SOURCES
 set(SOURCES
     ${QTAPP_ROOT}/main.cpp
     ${QTAPP_ROOT}/utils/scintilla_api.cpp
+    ${QTAPP_ROOT}/utils/sonicpi_i18n.cpp
     ${QTAPP_ROOT}/widgets/sonicpilog.cpp
     ${QTAPP_ROOT}/widgets/sonicpilog.h
     ${QTAPP_ROOT}/widgets/sonicpicontext.cpp
     ${QTAPP_ROOT}/widgets/sonicpicontext.h
     ${QTAPP_ROOT}/utils/scintilla_api.h
+    ${QTAPP_ROOT}/utils/sonicpi_i18n.h
     ${QTAPP_ROOT}/utils/ruby_help.h
+    ${QTAPP_ROOT}/utils/lang_list.h
     ${QTAPP_ROOT}/model/settings.h
     )
 

app/gui/qt/main.cpp

@@ -11,12 +11,13 @@
 // notice is included.
 //++
 
+#include <iostream>
+
 #include <QApplication>
 #include <QSplashScreen>
 #include <QPixmap>
 #include <QBitmap>
 #include <QLabel>
-#include <QTranslator>
 #include <QLibraryInfo>
 
 #include "mainwindow.h"
@@ -35,7 +36,7 @@
 
 int main(int argc, char *argv[])
 {
-
+  std::cout << "Starting Sonic Pi..." << std::endl;
 #ifndef Q_OS_MAC
   Q_INIT_RESOURCE(SonicPi);
 #endif
@@ -49,16 +50,6 @@ int main(int argc, char *argv[])
 
   qRegisterMetaType<SonicPiLog::MultiMessage>("SonicPiLog::MultiMessage");
 
-  QString systemLocale = QLocale::system().uiLanguages()[0].replace("-", "_");
-
-  QTranslator qtTranslator;
-  qtTranslator.load("qt_" + systemLocale, QLibraryInfo::location(QLibraryInfo::TranslationsPath));
-  app.installTranslator(&qtTranslator);
-
-  QTranslator translator;
-  bool i18n = translator.load(QLatin1String("sonic-pi_") + systemLocale, QLatin1String(":/lang")) ||  systemLocale.startsWith("en") || systemLocale == "C";
-  app.installTranslator(&translator);
-
   app.setApplicationName(QObject::tr("Sonic Pi"));
   app.setStyle("gtk");
 
@@ -75,7 +66,7 @@ int main(int argc, char *argv[])
   splash->show();
   splash->repaint();
   app.processEvents();
-  MainWindow mainWin(app, i18n, splash);
+  MainWindow mainWin(app, splash);
 
   return app.exec();
 #elif _WIN32
@@ -109,7 +100,7 @@ int main(int argc, char *argv[])
   splash->show();
   splash->repaint();
   app.processEvents();
-  MainWindow mainWin(app, i18n, splash);
+  MainWindow mainWin(app, splash);
 
   // Fix for full screen mode. See: https://doc.qt.io/qt-5/windows-issues.html#fullscreen-opengl-based-windows
   QWindowsWindowFunctions::setHasBorderInFullScreen(mainWin.windowHandle(), true);
@@ -139,9 +130,8 @@ int main(int argc, char *argv[])
   splashWindow->show();
   app.processEvents();
 
-  MainWindow mainWin(app, i18n, splashWindow);
+  MainWindow mainWin(app, splashWindow);
   return app.exec();
 
 #endif
-
 }

app/gui/qt/mainwindow.cpp

@@ -52,6 +52,8 @@
 #include "widgets/sonicpilexer.h"
 #include "widgets/sonicpiscintilla.h"
 
+#include "utils/sonicpi_i18n.h"
+
 #include "utils/borderlesslinksproxystyle.h"
 #include "visualizer/scope_window.h"
 
@@ -89,9 +91,9 @@ using namespace std::chrono;
 using namespace SonicPi;
 
 #ifdef Q_OS_MAC
-MainWindow::MainWindow(QApplication& app, bool i18n, QMainWindow* splash)
+MainWindow::MainWindow(QApplication& app, QMainWindow* splash)
 #else
-MainWindow::MainWindow(QApplication& app, bool i18n, QSplashScreen* splash)
+MainWindow::MainWindow(QApplication& app, QSplashScreen* splash)
 #endif
 {
     app.installEventFilter(this);
@@ -103,7 +105,6 @@ MainWindow::MainWindow(QApplication& app, bool i18n, QSplashScreen* splash)
     this->piSettings = new SonicPiSettings();
 
     this->splash = splash;
-    this->i18n = i18n;
 
     // API and Client
     m_spClient = std::make_shared<QtAPIClient>(this);
@@ -126,7 +127,6 @@ MainWindow::MainWindow(QApplication& app, bool i18n, QSplashScreen* splash)
     version_num = 0;
     latest_version_num = 0;
     this->splash = splash;
-    this->i18n = i18n;
     QString settings_path = sonicPiConfigPath() + QDir::separator() + "gui-settings.ini";
 
     gui_settings = new QSettings(settings_path, QSettings::IniFormat);
@@ -139,6 +139,19 @@ MainWindow::MainWindow(QApplication& app, bool i18n, QSplashScreen* splash)
     m_spAPI->Init(rootPath().toStdString());
     guiID = QString::fromStdString(m_spAPI->GetGuid());
 
+    this->sonicPii18n = new SonicPii18n(rootPath());
+    std::cout << "[GUI] - Language setting: " << piSettings->language.toUtf8().constData() << std::endl;
+    std::cout << "[GUI] - System language: " << QLocale::system().name().toStdString() << std::endl;
+    this->ui_language = sonicPii18n->determineUILanguage(piSettings->language);
+    std::cout << "[GUI] - Using language: " << ui_language.toUtf8().constData() << std::endl;
+    this->i18n = sonicPii18n->loadTranslations(ui_language);
+
+    if(i18n) {
+      std::cout << "[GUI] - translations available " << std::endl;
+    } else {
+      std::cout << "[GUI] - translations unavailable (using EN)" << std::endl;
+    }
+
     std::cout << "[GUI] - hiding main window" << std::endl;
     hide();
 
@@ -212,6 +225,11 @@ MainWindow::MainWindow(QApplication& app, bool i18n, QSplashScreen* splash)
     toggleOSCServer(1);
 
     app.setActiveWindow(tabs->currentWidget());
+
+    if (!i18n) {
+      showLanguageLoadingError();
+    }
+
     showWelcomeScreen();
 }
 
@@ -348,7 +366,8 @@ void MainWindow::setupWindowStructure()
     prefsWidget->setAllowedAreas(Qt::RightDockWidgetArea);
     prefsWidget->setFeatures(QDockWidget::DockWidgetClosable);
 
-    settingsWidget = new SettingsWidget(m_spAPI->GetPort(SonicPiPortId::server_osc_cues), piSettings, this);
+    settingsWidget = new SettingsWidget(m_spAPI->GetPort(SonicPiPortId::server_osc_cues), i18n, piSettings, sonicPii18n, this);
+    connect(settingsWidget, SIGNAL(restartApp()), this, SLOT(restartApp()));
     connect(settingsWidget, SIGNAL(volumeChanged(int)), this, SLOT(changeSystemPreAmp(int)));
     connect(settingsWidget, SIGNAL(mixerSettingsChanged()), this, SLOT(mixerSettingsChanged()));
     connect(settingsWidget, SIGNAL(midiSettingsChanged()), this, SLOT(toggleMidi()));
@@ -1216,6 +1235,18 @@ void MainWindow::startupError(QString msg)
 // TODO: Add format error to API
 }
 
+void MainWindow::showLanguageLoadingError() {
+  QMessageBox msgBox(this);
+  msgBox.setIcon(QMessageBox::Warning);
+  msgBox.setText(QString(tr("Failed to load translations for language: %1")).arg(sonicPii18n->getNativeLanguageName(this->ui_language)));
+  msgBox.setInformativeText(tr("Falling back to English. Sorry about this.") + "\n" + tr("Please consider reporting a bug at") + "\nhttp://github.com/sonic-pi-net/sonic-pi/issues");
+
+  QPushButton *okButton = msgBox.addButton(tr("OK"), QMessageBox::AcceptRole);
+  msgBox.setDefaultButton(okButton);
+
+  msgBox.exec();
+}
+
 void MainWindow::replaceBuffer(QString id, QString content, int line, int index, int first_line)
 {
     SonicPiScintilla* ws = filenameToWorkspace(id.toStdString());
@@ -2880,6 +2911,39 @@ void MainWindow::createToolBar()
     viewMenu->addAction(focusHelpListingAct);
     viewMenu->addAction(focusHelpDetailsAct);
     viewMenu->addAction(focusErrorsAct);
+
+    languageMenu = menuBar()->addMenu(tr("Language"));
+    QStringList available_languages = sonicPii18n->getAvailableLanguages();
+
+    langActionGroup = new QActionGroup(this);
+    langActionGroup->setExclusionPolicy(QActionGroup::ExclusionPolicy::Exclusive);
+
+    QSignalMapper *signalMapper = new QSignalMapper(this);
+
+    for (size_t i = 0; i < available_languages.length(); i += 1) {
+      bool is_current_lang = (available_languages[i] == piSettings->language);
+
+      QAction *langAct = new QAction(sonicPii18n->getNativeLanguageName(available_languages[i]), this);
+      langAct->setCheckable(true);
+      langAct->setChecked(is_current_lang);
+
+      connect(langAct, SIGNAL(triggered()), signalMapper, SLOT(map()));
+      signalMapper->setMapping(langAct, i);
+
+      langActionGroup->addAction(langAct);
+      languageMenu->addAction(langAct);
+
+      if (i == 0) { // add separator after System language
+        languageMenu->addSeparator();
+      }
+    }
+
+    connect(signalMapper, SIGNAL(mappedInt(int)), settingsWidget, SLOT(updateUILanguage(int)));
+    connect(settingsWidget, SIGNAL(uiLanguageChanged(QString)), this, SLOT(updateSelectedUILanguageAction(QString)));
+}
+
+void MainWindow::updateSelectedUILanguageAction(QString lang) {
+  langActionGroup->actions()[sonicPii18n->getAvailableLanguages().indexOf(lang)]->setChecked(true);
 }
 
 QString MainWindow::readFile(QString name)
@@ -3074,6 +3138,7 @@ void MainWindow::readSettings()
     std::cout << "[GUI] - reading settings" << std::endl;
 
     // Read in preferences from previous session
+    piSettings->language = gui_settings->value("prefs/language", "system_language").toString();
     piSettings->show_buttons = gui_settings->value("prefs/show-buttons", true).toBool();
     piSettings->show_tabs = gui_settings->value("prefs/show-tabs", true).toBool();
     piSettings->show_log = gui_settings->value("prefs/show-log", true).toBool();
@@ -3100,6 +3165,7 @@ void MainWindow::readSettings()
     piSettings->show_scope_labels = gui_settings->value("prefs/scope/show-labels", false).toBool();
     piSettings->show_cues = gui_settings->value("prefs/show_cues", true).toBool();
     QString styleName = gui_settings->value("prefs/theme", "").toString();
+
     piSettings->themeStyle = theme->themeNameToStyle(styleName);
     piSettings->show_autocompletion = gui_settings->value("prefs/show-autocompletion", true).toBool();
     piSettings->show_context = gui_settings->value("prefs/show-context", true).toBool();
@@ -3121,10 +3187,13 @@ void MainWindow::restoreScopeState(std::vector<QString> names)
 void MainWindow::writeSettings()
 {
     std::cout << "[GUI] - writing settings" << std::endl;
+
     gui_settings->setValue("pos", pos());
     gui_settings->setValue("size", size());
     gui_settings->setValue("first_time", 0);
 
+    gui_settings->setValue("prefs/language", piSettings->language);
+
     gui_settings->setValue("prefs/midi-default-channel", piSettings->midi_default_channel);
     gui_settings->setValue("prefs/midi-enable", piSettings->midi_enabled);
     gui_settings->setValue("prefs/osc-public", piSettings->osc_public);
@@ -3172,6 +3241,9 @@ void MainWindow::writeSettings()
     gui_settings->setValue("docsplitState", docsplit->saveState());
     gui_settings->setValue("windowState", saveState());
     gui_settings->setValue("windowGeom", saveGeometry());
+
+    // Force Qt to write the settings to the ini file
+    gui_settings->sync();
 }
 
 void MainWindow::loadFile(const QString& fileName, SonicPiScintilla*& text)
@@ -3261,6 +3333,31 @@ void MainWindow::onExitCleanup()
     }
 }
 
+void MainWindow::restartApp() {
+    QApplication* app = dynamic_cast<QApplication*>(parent());
+    statusBar()->showMessage(tr("Restarting Sonic Pi..."), 10000);
+
+    // Save settings and perform some cleanup
+    writeSettings();
+    onExitCleanup();
+    std::cout << "Performing application restart..." << std::endl;
+
+    // Create new process
+    QStringList args = qApp->arguments();
+    args.removeFirst();
+    QProcess process;
+    bool restart_success = process.startDetached(qApp->arguments()[0], args);
+    if (restart_success) {
+      std::cout << "Successfully restarted sonic-pi" << std::endl;
+    } else {
+      std::cout << "Failed to restart sonic-pi" << std::endl;
+    }
+
+    // Quit
+    app->exit(0);
+    exit(0);
+}
+
 void MainWindow::heartbeatOSC()
 {
     // Message msg("/gui-heartbeat");

app/gui/qt/mainwindow.h

@@ -17,6 +17,7 @@
 #include <vector>
 #include <memory>
 
+
 #include <QDate>
 #include <QMainWindow>
 #include <QFuture>
@@ -34,6 +35,7 @@
 #include "config.h"
 
 class QAction;
+class QActionGroup;
 class QMenu;
 class QToolBar;
 class QLineEdit;
@@ -67,6 +69,7 @@ class InfoWidget;
 class SettingsWidget;
 class Scope;
 class ScintillaAPI;
+class SonicPii18n;
 class SonicPiLog;
 class SonicPiScintilla;
 class SonicPiTheme;
@@ -91,9 +94,9 @@ class MainWindow : public QMainWindow
 
     public:
 #if defined(Q_OS_MAC)
-        MainWindow(QApplication &ref, bool i18n, QMainWindow* splash);
+        MainWindow(QApplication &ref, QMainWindow* splash);
 #else
-        MainWindow(QApplication &ref, bool i18n, QSplashScreen* splash);
+        MainWindow(QApplication &ref, QSplashScreen* splash);
 #endif
 
         SonicPiLog* GetOutputPane() const;
@@ -118,6 +121,8 @@ class MainWindow : public QMainWindow
 
         bool loaded_workspaces;
         QString hash_salt;
+        QString ui_language;
+
 
     protected:
         void closeEvent(QCloseEvent *event);
@@ -132,6 +137,7 @@ class MainWindow : public QMainWindow
 
        private slots:
 
+        void updateSelectedUILanguageAction(QString lang);
         void updateContext(int line, int index);
         void updateContextWithCurrentWs();
         void docLinkClicked(const QUrl &url);
@@ -178,6 +184,7 @@ class MainWindow : public QMainWindow
         void help();
         void toggleHelpIcon();
         void onExitCleanup();
+        void restartApp();
         void toggleRecording();
         void toggleRecordingOnIcon();
         void changeSystemPreAmp(int val, int silent=0);
@@ -229,6 +236,7 @@ class MainWindow : public QMainWindow
         void splashClose();
         void setMessageBoxStyle();
         void startupError(QString msg);
+        void showLanguageLoadingError();
         void tabNext();
         void tabPrev();
         void tabGoto(int index);
@@ -327,11 +335,13 @@ class MainWindow : public QMainWindow
         QString rootPath();
 
         void addUniversalCopyShortcuts(QTextEdit *te);
+        void updateTranslatedUIText();
 
-  QMenu *liveMenu, *codeMenu, *audioMenu, *displayMenu, *viewMenu, *ioMenu, *ioMidiInMenu, *ioMidiOutMenu, *ioMidiOutChannelMenu, *localIpAddressesMenu, *themeMenu, *scopeKindVisibilityMenu;
+  QMenu *liveMenu, *codeMenu, *audioMenu, *displayMenu, *viewMenu, *ioMenu, *ioMidiInMenu, *ioMidiOutMenu, *ioMidiOutChannelMenu, *localIpAddressesMenu, *themeMenu, *scopeKindVisibilityMenu, *languageMenu;
 
         QSettings *gui_settings;
         SonicPiSettings *piSettings;
+        SonicPii18n *sonicPii18n;
 
         bool focusMode;
         QCheckBox *startup_error_reported;
@@ -380,6 +390,7 @@ class MainWindow : public QMainWindow
 
   QAction *exitAct, *runAct, *stopAct, *saveAsAct, *loadFileAct, *recAct, *textAlignAct, *textIncAct, *textDecAct, *scopeAct, *infoAct, *helpAct, *prefsAct, *focusEditorAct, *focusLogsAct, *focusContextAct, *focusCuesAct, *focusPreferencesAct, *focusHelpListingAct, *focusHelpDetailsAct, *focusErrorsAct, *showLineNumbersAct, *showAutoCompletionAct, *showContextAct, *audioSafeAct, *audioTimingGuaranteesAct, *enableExternalSynthsAct, *mixerInvertStereoAct, *mixerForceMonoAct, *midiEnabledAct, *enableOSCServerAct, *allowRemoteOSCAct, *showLogAct, *showCuesAct, *logAutoScrollAct, *logCuesAct, *logSynthsAct, *clearOutputOnRunAct, *autoIndentOnRunAct, *showButtonsAct, *showTabsAct, *fullScreenAct, *lightThemeAct, *darkThemeAct, *proLightThemeAct, *proDarkThemeAct, *highContrastThemeAct, *showScopeLabelsAct;
   QShortcut *runSc, *stopSc, *saveAsSc, *loadFileSc, *recSc, *textAlignSc, *textIncSc, *textDecSc, *scopeSc, *infoSc, *helpSc, *prefsSc, *focusEditorSc, *focusLogsSc, *focusContextSc, *focusCuesSc, *focusPreferencesSc, *focusHelpListingSc, *focusHelpDetailsSc, *focusErrorsSc;
+        QActionGroup *langActionGroup;
 
         SettingsWidget *settingsWidget;