graph.py 文件源码

def main_shadow(self, w):
        """Wrap a shadow and background around widget w."""
        bg = urwid.AttrWrap(urwid.SolidFill(u"\u2592"), 'screen edge')
        shadow = urwid.AttrWrap(urwid.SolidFill(u" "), 'main shadow')

        bg = urwid.Overlay( shadow, bg,
            ('fixed left', 3), ('fixed right', 1),
            ('fixed top', 2), ('fixed bottom', 1))
        w = urwid.Overlay( w, bg,
            ('fixed left', 2), ('fixed right', 3),
            ('fixed top', 1), ('fixed bottom', 2))
        return w