Updates the position of the additional buttons when this widget \
        resizes.
        
        :param      event | <QResizeEvet>

def resizeEvent(self, event):
        """
        Updates the position of the additional buttons when this widget \
        resizes.
        
        :param      event | <QResizeEvet>
        """
        super(XTabBar, self).resizeEvent(event)
        self.resized.emit()