Mark the hovered state as being false.

        :param      event | <QtCore.QLeaveEvent>

def leaveEvent(self, event):
        """
        Mark the hovered state as being false.

        :param      event | <QtCore.QLeaveEvent>
        """
        super(XViewPanelItem, self).leaveEvent(event)

        # store the hover state and mark for a repaint
        self._hovered = False
        self.update()