Add translations that are changeable during runtime

1 files changed, 58 insertions, 3 deletions

diff --git a/mainwindow.cpp b/mainwindow.cpp
index 5a548db..8bc0a22 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -26,17 +26,17 @@ void MainWindow::on_actionPreferences_triggered()
     tmp->setHeight(size().height());
     tmp->setWidth(size().width());
 
-    if(tmp->exec())
+    if (tmp->exec())
     {
         qDebug() << "DlgPreferences okay clicked.";
 
         int width = tmp->Width();
         int height = tmp->Height();
 
-        if(width >= 100 && width <= 800 && height >= 100 && height <= 800)
+        if (width >= 100 && width <= 800 && height >= 100 && height <= 800)
         {
             qDebug() << "Resizing QMainWindow.";
-            resize(width,height);
+            resize(width, height);
         }
     }
 
@@ -44,7 +44,62 @@ void MainWindow::on_actionPreferences_triggered()
 }
 
 
+void MainWindow::on_actionLanguage_triggered()
+{
+    LanguageDialog *tmp = new LanguageDialog(this);
+
+    if (QLocale::system().language() == QLocale::German)
+    {
+        tmp->setLanguage(1);
+    }
+    else
+    {
+        tmp->setLanguage(0);
+    }
+
+    if (tmp->exec())
+    {
+        switch (tmp->language())
+        {
+        case 0:
+            qDebug() << "English";
+            loadLanguage(":/english.qm");
+
+            break;
+
+        case 1:
+            qDebug() << "German";
+            loadLanguage(":/german.qm");
+
+            break;
+        }
+    }
+}
+
+
 void MainWindow::mouseMoveEvent(QMouseEvent *mouseEvent)
 {
     qDebug() << "MainWindow:" << mouseEvent->pos();
 }
+
+void MainWindow::loadLanguage(const QString& rLanguageFile)
+{
+    // remove the old translator
+    qApp->removeTranslator(&m_translator);
+
+    // load the new translator
+    if (m_translator.load(rLanguageFile))
+    {
+        qApp->installTranslator(&m_translator);
+    }
+}
+
+void MainWindow::changeEvent(QEvent *event)
+{
+    if (event != 0 && event->type() == QEvent::LanguageChange)
+    {
+        ui->retranslateUi(this);
+    }
+
+    QMainWindow::changeEvent(event);
+}