DrawViewBalloon: add units there as well

since OriginX/Y depend on DrawView base X/Y

- also adapt the balloon test accordingly

src/Mod/TechDraw/App/DrawViewBalloon.cpp

@@ -128,6 +128,27 @@ void DrawViewBalloon::onDocumentRestored()
 
 }
 
+void DrawViewBalloon::handleChangedPropertyType(Base::XMLReader &reader, const char *TypeName, App::Property *prop)
+// transforms properties that had been changed
+{
+	// also check for changed properties of the base class
+	DrawView::handleChangedPropertyType(reader, TypeName, prop);
+
+	// property OriginX had the App::PropertyFloat and was changed to App::PropertyLength
+	if (prop == &OriginX && strcmp(TypeName, "App::PropertyFloat") == 0) {
+		App::PropertyInteger OriginXProperty;
+		// restore the PropertyInteger to be able to set its value
+		OriginXProperty.Restore(reader);
+		OriginX.setValue(OriginXProperty.getValue());
+	}
+	// property OriginY had the App::PropertyFloat and was changed to App::PropertyLength
+	else if (prop == &OriginY && strcmp(TypeName, "App::PropertyFloat") == 0) {
+		App::PropertyFloat OriginYProperty;
+		OriginYProperty.Restore(reader);
+		OriginY.setValue(OriginYProperty.getValue());
+	}
+}
+
 
 short DrawViewBalloon::mustExecute() const
 {