Force the repaint of widgets in order that widgets dealing whith raster and openGL widgets are correctly rendered

Author: zyrkiel

src/DockAreaWidget.cpp

@@ -726,6 +726,9 @@ void CDockAreaWidget::setCurrentIndex(int index)
     TabBar->setCurrentIndex(index);
 	d->ContentsLayout->setCurrentIndex(index);
 	d->ContentsLayout->currentWidget()->show();
+	// Force the repaint of the current widget because mix of OpenGL widgets
+	// and Raster widgets could have not been entirely rendered
+	d->ContentsLayout->currentWidget()->repaint();
 	Q_EMIT currentChanged(index);
 }