    def is_mouse_over(self, event):
        """
        Check whether a MouseEvent is over thus scroll bar.

        :param event: The MouseEvent to check.

        :returns: True if the mouse event is over the scroll bar.
        """
        return event.x == self._x and self._y <= event.y < self._y + self._height
Check whether a MouseEvent is over thus scroll bar.

:param event: The MouseEvent to check.

:returns: True if the mouse event is over the scroll bar.
asciimatics/widgets/scrollbar.py