85 lines
2.0 KiB
Python
85 lines
2.0 KiB
Python
import _curses
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import argparse
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import curses
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from typing import Dict
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from typing import Tuple
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def _get_color_pair_mapping() -> Dict[Tuple[int, int], int]:
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ret = {}
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i = 0
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for bg in range(-1, 16):
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for fg in range(bg, 16):
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ret[(fg, bg)] = i
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i += 1
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return ret
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COLORS = _get_color_pair_mapping()
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del _get_color_pair_mapping
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def _has_colors() -> bool:
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# https://github.com/python/typeshed/pull/3115
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return curses.has_colors and curses.COLORS >= 16 # type: ignore
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def _color(fg: int, bg: int) -> int:
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if _has_colors():
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if bg > fg:
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return curses.A_REVERSE | curses.color_pair(COLORS[(bg, fg)])
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else:
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return curses.color_pair(COLORS[(fg, bg)])
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else:
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if bg > fg:
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return curses.A_REVERSE | curses.color_pair(0)
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else:
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return curses.color_pair(0)
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def _init_colors(stdscr: '_curses._CursesWindow') -> None:
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curses.use_default_colors()
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if not _has_colors():
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return
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for (fg, bg), pair in COLORS.items():
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if pair == 0: # cannot reset pair 0
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continue
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curses.init_pair(pair, fg, bg)
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def _color_test(stdscr: '_curses._CursesWindow') -> None:
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maxy, maxx = stdscr.getmaxyx()
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if maxy < 16 or maxx < 64:
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raise SystemExit('--color-test needs a window of at least 64 x 16')
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x = y = 0
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for fg in range(-1, 16):
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for bg in range(-1, 16):
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if bg > fg:
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s = f'*{COLORS[bg, fg]:3}'
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else:
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s = f' {COLORS[fg, bg]:3}'
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stdscr.addstr(y, x, s, _color(fg, bg))
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x += 4
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y += 1
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x = 0
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def c_main(stdscr: '_curses._CursesWindow', args: argparse.Namespace) -> None:
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_init_colors(stdscr)
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if args.color_test:
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_color_test(stdscr)
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stdscr.getch()
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def main() -> int:
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parser = argparse.ArgumentParser()
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parser.add_argument('--color-test', action='store_true')
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args = parser.parse_args()
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curses.wrapper(c_main, args)
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return 0
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if __name__ == '__main__':
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exit(main())
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