| # Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file. |
| from __future__ import print_function |
| import fixpath |
| import colorama |
| from colorama import Fore, Back, Style, Cursor |
| from random import randint, choice |
| from string import printable |
| |
| # Demonstrate printing colored, random characters at random positions on the screen |
| |
| # Fore, Back and Style are convenience classes for the constant ANSI strings that set |
| # the foreground, background and style. They don't have any magic of their own. |
| FORES = [ Fore.BLACK, Fore.RED, Fore.GREEN, Fore.YELLOW, Fore.BLUE, Fore.MAGENTA, Fore.CYAN, Fore.WHITE ] |
| BACKS = [ Back.BLACK, Back.RED, Back.GREEN, Back.YELLOW, Back.BLUE, Back.MAGENTA, Back.CYAN, Back.WHITE ] |
| STYLES = [ Style.DIM, Style.NORMAL, Style.BRIGHT ] |
| |
| # This assumes your terminal is 80x24. Ansi minimum coordinate is (1,1). |
| MINY, MAXY = 1, 24 |
| MINX, MAXX = 1, 80 |
| |
| # set of printable ASCII characters, including a space. |
| CHARS = ' ' + printable.strip() |
| |
| PASSES = 1000 |
| |
| def main(): |
| colorama.just_fix_windows_console() |
| pos = lambda y, x: Cursor.POS(x, y) |
| # draw a white border. |
| print(Back.WHITE, end='') |
| print('%s%s' % (pos(MINY, MINX), ' '*MAXX), end='') |
| for y in range(MINY, 1+MAXY): |
| print('%s %s ' % (pos(y, MINX), pos(y, MAXX)), end='') |
| print('%s%s' % (pos(MAXY, MINX), ' '*MAXX), end='') |
| # draw some blinky lights for a while. |
| for i in range(PASSES): |
| print('%s%s%s%s%s' % (pos(randint(1+MINY,MAXY-1), randint(1+MINX,MAXX-1)), choice(FORES), choice(BACKS), choice(STYLES), choice(CHARS)), end='') |
| # put cursor to top, left, and set color to white-on-black with normal brightness. |
| print('%s%s%s%s' % (pos(MINY, MINX), Fore.WHITE, Back.BLACK, Style.NORMAL), end='') |
| |
| if __name__ == '__main__': |
| main() |
