| #!/usr/bin/env python | |
| """ | |
| Example application for the 'blessed' Terminal library for python. | |
| This isn't a real progress bar, just a sample "animated prompt" of sorts that demonstrates the | |
| separate move_x() and move_yx() capabilities, made mainly to test the `hpa' compatibility for | |
| 'screen' terminal type which fails to provide one, but blessed recognizes that it actually does, and | |
| provides a proxy. | |
| """ | |
| from __future__ import print_function | |
| # std imports | |
| import sys | |
| # local | |
| from blessed import Terminal | |
| def main(): | |
| """Program entry point.""" | |
| term = Terminal() | |
| assert term.hpa(1) != u'', ( | |
| 'Terminal does not support hpa (Horizontal position absolute)') | |
| col, offset = 1, 1 | |
| with term.cbreak(): | |
| inp = None | |
| print("press 'X' to stop.") | |
| sys.stderr.write(term.move_yx(term.height, 0) + u'[') | |
| sys.stderr.write(term.move_x(term.width - 1) + u']' + term.move_x(1)) | |
| while inp != 'X': | |
| if col >= (term.width - 2): | |
| offset = -1 | |
| elif col <= 1: | |
| offset = 1 | |
| sys.stderr.write(term.move_x(col)) | |
| if offset == -1: | |
| sys.stderr.write(u'.') | |
| else: | |
| sys.stderr.write(u'=') | |
| col += offset | |
| sys.stderr.write(term.move_x(col)) | |
| sys.stderr.write(u'|\b') | |
| sys.stderr.flush() | |
| inp = term.inkey(0.04) | |
| print() | |
| if __name__ == '__main__': | |
| main() | |