scrollable.py 文件源码

def on_key(self, ch):
        if ch not in (curses.KEY_UP, curses.KEY_DOWN, curses.KEY_PPAGE, curses.KEY_NPAGE):
            return

        if ch == curses.KEY_UP:
            self.scroll = max(self.scroll - 1, 0)

        if ch == curses.KEY_DOWN:
            self.scroll = min(self.scroll + 1, self.maxscroll)

        if ch == curses.KEY_PPAGE:
            self.scroll = max(self.scroll - self.perpage, 0)

        if ch == curses.KEY_NPAGE:
            self.scroll = min(self.scroll + self.perpage, self.maxscroll)

        self.update()