screen.py 文件源码

def create_screen(fn):
    """
    Initializes curses and passes a Screen to the main loop function `fn`.
    Based on curses.wrapper.
    """
    try:
        # Make escape key more responsive
        os.environ['ESCDELAY'] = '25'

        stdscr = curses.initscr()

        curses.noecho()
        curses.cbreak()
        stdscr.keypad(1)
        stdscr.nodelay(1)
        curses.curs_set(0)

        curses.mousemask(curses.BUTTON1_CLICKED)

        if curses.has_colors():
            curses.start_color()
            curses.use_default_colors()

        screen = Screen(stdscr)
        fn(screen)

    finally:
        # Set everything back to normal
        if 'stdscr' in locals():
            curses.use_default_colors()
            curses.curs_set(1)
            stdscr.keypad(0)
            curses.echo()
            curses.nocbreak()
            curses.endwin()