loading.py 文件源码

def __init__(self, text, width, host_view, loop = None):
        self.loop = loop
        self.host_view = host_view
        self.overlay = urwid.Overlay(
                    urwid.LineBox(urwid.Text(text)), host_view, #urwid.SolidFill(),
                    'center', width, 'middle', None)
        urwid.Frame.__init__(self, self.overlay)