Edit text using Python and curses Textbox widget?

问题

Has anybody got a working example of using the curses.textpad.Textbox widget to edit existing text? This is, of course, in a Linux terminal (e.g. xterm).

回答1:

Found this there is several minutes

import curses
import curses.textpad

stdscr = curses.initscr()
# don't echo key strokes on the screen
curses.noecho()
# read keystrokes instantly, without waiting for enter to ne pressed
curses.cbreak()
# enable keypad mode
stdscr.keypad(1)
stdscr.clear()
stdscr.refresh()
win = curses.newwin(5, 60, 5, 10)
tb = curses.textpad.Textbox(win)
text = tb.edit()
curses.beep()
win.addstr(4,1,text.encode('utf_8'))

I also made a function to make a textbox:

def maketextbox(h,w,y,x,value="",deco=None,underlineChr=curses.ACS_HLINE,textColorpair=0,decoColorpair=0):
    nw = curses.newwin(h,w,y,x)
    txtbox = curses.textpad.Textbox(nw)
    if deco=="frame":
        screen.attron(decoColorpair)
        curses.textpad.rectangle(screen,y-1,x-1,y+h,x+w)
        screen.attroff(decoColorpair)
    elif deco=="underline":
        screen.hline(y+1,x,underlineChr,w,decoColorpair)

    nw.addstr(0,0,value,textColorpair)
    nw.attron(textColorpair)
    screen.refresh()
    return txtbox

To use it just do:

foo = maketextbox(1,40, 10,20,"foo",deco="underline",textColorpair=curses.color_pair(0),decoColorpair=curses.color_pair(1))
text = foo.edit()

回答2:

textpad.Textbox(win, insert_mode=True) provides basic insert support. Backspace needs to be added though.

回答3:

The initial code didn't work, decided to have a hack at it, this works on insert mode and then when you press Ctrl-G display's the text at the right position.

import curses
import curses.textpad

def main(stdscr):
    stdscr.clear()
    stdscr.refresh()
    win = curses.newwin(5, 60, 5, 10)

    tb = curses.textpad.Textbox(win, insert_mode=True)
    text = tb.edit()
    curses.flash()
    win.clear()
    win.addstr(0, 0, text.encode('utf-8'))
    win.refresh()
    win.getch()

curses.wrapper(main)

回答4:

I found that the Edit widget in the urwid package is sufficient for my needs. This is not the Textpad widget, but something different. The urwid package is overall nicer, anyway. However, it's still not pain-free. The Edit widget does allow inserting text, but not overwriting (toggled with Ins key), but that's not a big deal.

来源：https://stackoverflow.com/questions/4581441/edit-text-using-python-and-curses-textbox-widget

标签

python

ncurses