Experimenting with curses

bless_keypress.py

import blessings

term = blessings.Terminal()


def keypress():
    with term.cbreak():
        inp = term.inkey()
        if inp.code == term.KEY_ENTER:
            print 'hit enter'
        if inp.code == term.KEY_DOWN:
            print 'downward!'
        if inp.code == term.KEY_UP:
            print 'upward!'
        if inp.code == term.KEY_RIGHT:
            print 'to the right!'
        if inp.code == term.KEY_LEFT:
            print 'to the left'


if __name__ == '__main__':

    while True:
        keypress()

bless_print.py

import time
import random
import string

from blessings import Terminal

term = Terminal()
print dir(term)
quit()

with term.fullscreen():
    for i in range(10):
        print '{t.normal}FAHSJDF'.format(t=term)
    print term.move(0, 0) + 'hi'
    time.sleep(3)

curses_print.py

import time
import curses, traceback

# Example code from here:
# http://gnosis.cx/publish/programming/charming_python_6.html

def main(stdscr):
    # Frame the interface area at fixed VT100 size
    screen = stdscr.subwin(23, 79, 0, 0)
    screen.box()
    screen.hline(2, 1, curses.ACS_HLINE, 77)
    screen.refresh()

    time.sleep(5)


if __name__=='__main__':

    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)
        # Enter the main loop
        main(stdscr)
        # Set everything back to normal
        stdscr.keypad(0)
        curses.echo()
        curses.nocbreak()
        # Terminate curses
        curses.endwin()

    except:
        # In event of error, restore terminal to sane state.
        stdscr.keypad(0)
        curses.echo()
        curses.nocbreak()
        curses.endwin()
        # Print the exception
        traceback.print_exc()

grab_keypress.py

import sys, os
import termios
import fcntl

def getch():
    fd = sys.stdin.fileno()

    oldterm = termios.tcgetattr(fd)
    newattr = termios.tcgetattr(fd)
    newattr[3] = newattr[3] & ~termios.ICANON & ~termios.ECHO
    termios.tcsetattr(fd, termios.TCSANOW, newattr)

    oldflags = fcntl.fcntl(fd, fcntl.F_GETFL)
    fcntl.fcntl(fd, fcntl.F_SETFL, oldflags | os.O_NONBLOCK)

    try:
        while 1:
            try:
                c = sys.stdin.read(1)
                print type(c)
                print 'keypress: %s' % c
                break
            except IOError: pass
    finally:
        termios.tcsetattr(fd, termios.TCSAFLUSH, oldterm)
        fcntl.fcntl(fd, fcntl.F_SETFL, oldflags)

if __name__ == '__main__':

    getch()