Redraw InputGraphicsBox on input change

agui2/src/Graphics/InputGraphicsBox.cpp

@@ -31,6 +31,7 @@ void InputGraphicsBox::on_SetInput()
     }
     this->color = model->getAutomaton() ? Qt::blue : Qt::red;
+    this->update();
 }
 void InputGraphicsBox::contextMenuEvent(QGraphicsSceneContextMenuEvent* event) {