window.py 文件源码

def using_curses(func):
    def inner(*largs, **kwargs):
        """
        Calls decorated function with initial curses screen inserted as
        first argument.
        Content mostly taken from curses.wrapper, modified to function as a
        decorator, and to introduce cursor removal
        """
        try:
            # Initialize curses
            stdscr = curses.initscr()

            # Turn off echoing of keys, and enter cbreak mode,
            # where no buffering is performed on keyboard input
            curses.noecho()
            curses.cbreak()

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

            # Start color, too.  Harmless if the terminal doesn't have
            # color; user can test with has_color() later on.  The try/catch
            # works around a minor bit of over-conscientiousness in the curses
            # module -- the error return from C start_color() is ignorable.
            try:
                curses.start_color()
                curses.use_default_colors()
            except:
                pass

            # Set colour pallet
            curses.init_pair(CPI_GOOD, curses.COLOR_GREEN, -1)
            curses.init_pair(CPI_ERROR, curses.COLOR_RED, -1)
            curses.init_pair(CPI_WARNING, curses.COLOR_YELLOW, -1)

            # Remove blinking cursor
            curses.curs_set(0)

            func(stdscr, *largs, **kwargs)

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

    return inner



# ================== Status (header) Window ==================