Python 调整大小时诅咒边框

Question

我正在使用 curses 在 Python 2.7 中构建一个简单的可滚动菜单，并尝试使其针对任何 window 大小进行缩放，包括如果终端大小发生变化（即我希望它更大）或在我使用菜单时更小）。我有一个简单的测试代码，用来尝试找出这个问题。看来，如果这可能的话，我真的很接近，但我看到的是，当我调整我的终端 window 大小时（使用 mRemoteNG），边框画线填充 space，如图所示在屏幕截图的底部，在我垂直扩展 window 之后：

我用来测试的代码如下：

import curses
import os

VERSION = "0.1-dev" #version number

screen = curses.initscr() #initialize the curses window

#Configure color pairs for showing select menu options as highlighted
curses.start_color() #enable color for highlighting menu options
curses.init_pair(1, curses.COLOR_BLACK, curses.COLOR_WHITE) #color pair 1
highlightText = curses.color_pair(1) #color pair for highlighted menu option
normalText = curses.A_NORMAL #color pair for non-highlighted menu options

#Configure global variables for Curses
curses.noecho() #disable the keypress echo to prevent double input
curses.cbreak() #disable line buffers to run the keypress immediately
curses.curs_set(0)
screen.keypad(1) #enable keyboard use
screen.addstr(2, 2, "Screen Resize Test" + VERSION, curses.A_UNDERLINE)

#test screen resize
def main_screen():
    escape = False
    while escape == False:
        maxY, maxX = screen.getmaxyx()
        screen.border('|', '|', '-', '-', '+', '+', '+', '+')
        screen.addstr(4, 2, "MaxY: " + str(maxY))
        screen.addstr(5, 2, "MaxX: " + str(maxX))
        screen.refresh()

        x = screen.getch()

        if x == ord("q"):
            escape = True




main_screen()


curses.endwin() # *** CRITICAL *** this closes the curses menu and returns user to bash
os.system('clear') #clears the screen to avoid curses remnants

我尝试了很多不同的 screen.refresh() 和 screen.clear() 放置方式，但它似乎永远无法摆脱诅咒边缘的线条残留 window。显然，如果这可能的话，我要么不知道将这些 one/both 放在哪里，要么我不在正确的轨道上。

Answer 1

在您的程序中，您应该检查 curses.KEY_RESIZE 作为 getch 的 return 值，在这种情况下，调用 screen.erase.

此外，现有的对 screen.refresh 的调用是不必要的，因为 screen.getch 无论如何都会这样做。

这对我有用：

import curses
import os

VERSION = "0.1-dev" #version number

screen = curses.initscr() #initialize the curses window

#Configure color pairs for showing select menu options as highlighted
curses.start_color() #enable color for highlighting menu options
curses.init_pair(1, curses.COLOR_BLACK, curses.COLOR_WHITE) #color pair 1
highlightText = curses.color_pair(1) #color pair for highlighted menu option
normalText = curses.A_NORMAL #color pair for non-highlighted menu options

#Configure global variables for Curses
curses.noecho() #disable the keypress echo to prevent double input
curses.cbreak() #disable line buffers to run the keypress immediately
curses.curs_set(0)
screen.keypad(1) #enable keyboard use
screen.addstr(2, 2, "Screen Resize Test" + VERSION, curses.A_UNDERLINE)

#test screen resize
def main_screen():
    escape = False
    while escape == False:
        maxY, maxX = screen.getmaxyx()
        screen.border('|', '|', '-', '-', '+', '+', '+', '+')
        screen.addstr(4, 2, "MaxY: " + str(maxY))
        screen.addstr(5, 2, "MaxX: " + str(maxX))

        x = screen.getch()

        if x == ord("q"):
            escape = True
            curses.endwin()
        elif x == curses.KEY_RESIZE:
            screen.erase()
            screen.addstr(2, 2, "Screen Resize Test" + VERSION, curses.A_UNDERLINE)

main_screen()

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