t_curses.py 文件源码

def enable():
    # Initialize curses
    global stdscr
    global status_pad
    global usage_win
    global curses_sighandler
    global map_track_num
    global enabled
    global pad_height, pad_width
    global had_special
    global extra_lines

    if enabled:
        return

    had_special = 0
    extra_lines = 2  # top + bottom status lines
    if jack.display.discname:
        extra_lines = extra_lines + 1
    stdscr = initscr()
    enabled = 1
    jack.term.sig_winch_cache = signal.signal(signal.SIGWINCH, signal.SIG_IGN)
    # Turn off echoing of keys, and enter cbreak mode,
    # where no buffering is performed on keyboard input
    noecho()
    cbreak()

    # In keypad mode, escape sequences for special keys
    # (like the cursor keys) will be interpreted and
    # a special value like KEY_LEFT will be returned
    stdscr.keypad(1)
    stdscr.leaveok(0)

    # build the pad
    pad_height, pad_width = len(
        jack.ripstuff.all_tracks_todo_sorted), jack.ripstuff.max_name_len + 72
    status_pad = newpad(pad_height, pad_width)
    usage_win = newwin(usage_win_height, usage_win_width, 0, 0)
    map_track_num = {}
    for i in range(len(jack.ripstuff.all_tracks_todo_sorted)):
        map_track_num[jack.ripstuff.all_tracks_todo_sorted[i][NUM]] = i

    sig_winch_handler(None, None)