test_canvas.py 文件源码

def test1(self):
        a = urwid.Text("")
        b = urwid.Text("")
        blah = urwid.TextCanvas()
        blah.finalize(a, (10,1), False)
        blah2 = urwid.TextCanvas()
        blah2.finalize(a, (15,1), False)
        bloo = urwid.TextCanvas()
        bloo.finalize(b, (20,2), True)

        urwid.CanvasCache.store(urwid.Widget, blah)
        urwid.CanvasCache.store(urwid.Widget, blah2)
        urwid.CanvasCache.store(urwid.Widget, bloo)

        self.cct(a, (10,1), False, blah)
        self.cct(a, (15,1), False, blah2)
        self.cct(a, (15,1), True, None)
        self.cct(a, (10,2), False, None)
        self.cct(b, (20,2), True, bloo)
        self.cct(b, (21,2), True, None)
        urwid.CanvasCache.invalidate(a)
        self.cct(a, (10,1), False, None)
        self.cct(a, (15,1), False, None)
        self.cct(b, (20,2), True, bloo)