Emit localeChanged signal when locale is changed (#45617)

qgis · Dec 9, 2021 · 8caad83 · 8caad83
1 parent b3d6deb
commit 8caad83
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diff --git a/python/core/auto_generated/qgsapplication.sip.in b/python/core/auto_generated/qgsapplication.sip.in
@@ -441,6 +441,13 @@ Returns the QGIS platform name, e.g., "desktop", "server", "qgis_process" or "ex
 Returns the QGIS locale.
 
 .. versionadded:: 3.0
+%End
+
+    static void setLocale( QLocale locale );
+%Docstring
+Sets the QGIS locale.
+
+.. versionadded:: 3.22
 %End
 
     static QString userThemesFolder();
@@ -1080,6 +1087,13 @@ In order to register translatable strings, connect to this signal and register t
 .. versionadded:: 3.4
 %End
 
+
+    void localeChanged();
+%Docstring
+Emitted when project locale has been changed.
+%End
+
+
 };
 
 

diff --git a/src/app/main.cpp b/src/app/main.cpp
@@ -1034,6 +1034,9 @@ int main( int argc, char *argv[] )
 
   QgsApplication myApp( argc, argv, myUseGuiFlag, QString(), QStringLiteral( "desktop" ) );
 
+  // Set locale to emit QgsApplication's localeChanged signal
+  myApp.setLocale( QLocale() );
+
   //write the log messages written before creating QgsApplication
   for ( const QString &preApplicationLogMessage : std::as_const( preApplicationLogMessages ) )
     QgsMessageLog::logMessage( preApplicationLogMessage );

diff --git a/src/core/qgsapplication.cpp b/src/core/qgsapplication.cpp
@@ -1310,6 +1310,12 @@ QString QgsApplication::locale()
   }
 }
 
+void QgsApplication::setLocale( QLocale locale )
+{
+  QLocale::setDefault( locale );
+  emit instance()->localeChanged();
+}
+
 QString QgsApplication::userThemesFolder()
 {
   return qgisSettingsDirPath() + QStringLiteral( "/themes" );

diff --git a/src/core/qgsapplication.h b/src/core/qgsapplication.h
@@ -468,6 +468,12 @@ class CORE_EXPORT QgsApplication : public QApplication
      */
     static QString locale();
 
+    /**
+     * Sets the QGIS locale.
+     * \since QGIS 3.22
+     */
+    static void setLocale( QLocale locale );
+
     //! Returns the path to user's themes folder
     static QString userThemesFolder();
 
@@ -1043,6 +1049,13 @@ class CORE_EXPORT QgsApplication : public QApplication
      */
     void requestForTranslatableObjects( QgsTranslationContext *translationContext );
 
+
+    /**
+     * Emitted when project locale has been changed.
+     */
+    void localeChanged();
+
+
   private:
 
     static void copyPath( const QString &src, const QString &dst );