Search and load translation files at frontend startup

Signed-off-by: falkTX <falktx@falktx.com>

source/frontend/carla_app.py

@@ -30,7 +30,7 @@ from ctypes import CDLL, RTLD_GLOBAL
 # ------------------------------------------------------------------------------------------------------------
 # Imports (PyQt5)
 
-from PyQt5.QtCore import QT_VERSION, Qt, QCoreApplication
+from PyQt5.QtCore import QT_VERSION, Qt, QCoreApplication, QLibraryInfo, QLocale, QSettings, QTranslator
 from PyQt5.QtGui import QColor, QIcon, QPalette
 from PyQt5.QtWidgets import QApplication
 
@@ -77,6 +77,22 @@ class CarlaApplication():
         else:
             stylesDir = ""
 
+        # Set up translations
+        currentLocale = QLocale()
+        appTranslator = QTranslator()
+        sysTranslator = None
+        pathTranslations = os.path.join(pathResources, "translations")
+        if appTranslator.load(currentLocale, "carla", "_", pathTranslations):
+            sysTranslator = QTranslator()
+            pathSysTranslations = pathTranslations
+            if not sysTranslator.load(currentLocale, "qt", "_", pathSysTranslations):
+                pathSysTranslations = QLibraryInfo.location(QLibraryInfo.TranslationsPath)
+                sysTranslator.load(currentLocale, "qt", "_", pathSysTranslations)
+        else:
+            appTranslator = None
+        self.fAppTranslator = appTranslator
+        self.fSysTranslator = sysTranslator
+
         # base settings
         settings    = QSafeSettings("falkTX", appName)
         useProTheme = MACOS or settings.value(CARLA_KEY_MAIN_USE_PRO_THEME, CARLA_DEFAULT_MAIN_USE_PRO_THEME, bool)
@@ -138,6 +154,10 @@ class CarlaApplication():
         self.fApp.setApplicationVersion(VERSION)
         self.fApp.setOrganizationName("falkTX")
 
+        if self.fAppTranslator is not None:
+            self.fApp.installTranslator(self.fAppTranslator)
+            self.fApp.installTranslator(self.fSysTranslator)
+
         if gCarla.nogui:
             return