Add very basic status bar alerts

main_window.py

@@ -61,21 +61,25 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
         self.__mode = Mode.ADD
         set_drawing_mode(self.__mode)
         self.opengl_widget.setCursor(QCursor(Qt.CursorShape.CrossCursor))
+        self.status_bar.showMessage("ADD MODE")
 
     def __edit_points(self):
         self.__mode = Mode.EDIT
         set_drawing_mode(self.__mode)
         self.opengl_widget.setCursor(QCursor(Qt.CursorShape.CrossCursor))
+        self.status_bar.showMessage("EDIT MODE")
 
     def __delete_points(self):
         self.__mode = Mode.DELETE
         set_drawing_mode(self.__mode)
         self.opengl_widget.setCursor(QCursor(Qt.CursorShape.PointingHandCursor))
+        self.status_bar.showMessage("DELETE MODE")
 
     def __move_points(self):
         self.__mode = Mode.MOVE
         set_drawing_mode(self.__mode)
         self.opengl_widget.setCursor(QCursor(Qt.CursorShape.SizeAllCursor))
+        self.status_bar.showMessage("MOVE MODE")
 
     @handle_exceptions
     def __solve_launcher(self):