1: \ ansi.fs Define terminal attributes 20may93jaw
2:
3: \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21:
22: \ If you want another terminal you can redefine the colours.
23:
24: \ But a better way is it only to redefine SET-ATTR
25: \ to have compatible colours.
26:
27: \ Attributes description:
28: \ <A ( -- -1 0 ) Start attributes description
29: \ A> ( -1 x .. x -- attr ) Terminate an attributes description and
30: \ return overall attribute; currently only
31: \ 12 bits are used.
32: \
33: \ >BG ( colour -- x ) x is attribute with colour as Background colour
34: \ >FG ( colour -- x ) x is attribute with colour as Foreground colour
35: \
36: \ SET-ATTR ( attr -- ) Send attributes to terminal
37: \
38: \ BG> ( attr -- colour) extract colour of Background from attr
39: \ FG> ( attr -- colour) extract colour of Foreground from attr
40: \
41: \ See colorize.fs for an example of usage.
42:
43: \ To do: Make <A A> State smart and only compile literals!
44:
45: needs vt100.fs
46:
47: decimal
48:
49: 0 CONSTANT Black
50: 1 CONSTANT Red
51: 2 CONSTANT Green
52: 3 CONSTANT Yellow
53: 4 CONSTANT Blue
54: 5 CONSTANT Brown
55: 6 CONSTANT Cyan
56: 7 CONSTANT White
57:
58: 1 CONSTANT Bold
59: 2 CONSTANT Underline
60: 4 CONSTANT Blink
61: 8 CONSTANT Invers
62:
63: \ For portable programs don't use invers and underline
64:
65: : >BG 4 lshift ;
66: : >FG >BG >BG ;
67:
68: : BG> 4 rshift 15 and ;
69: : FG> 8 rshift 15 and ;
70:
71: : <A -1 0 ;
72: : A> BEGIN over -1 <> WHILE or REPEAT nip ;
73:
74: VARIABLE Attr -1 Attr !
75:
76: DEFER Attr!
77:
78: : (Attr!) ( attr -- ) dup Attr @ = IF drop EXIT THEN
79: dup Attr !
80: ESC[ 0 pn
81: dup FG> ?dup IF 30 + ;pn THEN
82: dup BG> ?dup IF 40 + ;pn THEN
83: dup Bold and IF 1 ;pn THEN
84: dup Underline and IF 4 ;pn THEN
85: dup Blink and IF 5 ;pn THEN
86: Invers and IF 7 ;pn THEN
87: [char] m emit ;
88:
89: ' (Attr!) IS Attr!
90:
91: : BlackSpace Attr @ dup BG> Black =
92: IF drop space
93: ELSE 0 attr! space attr! THEN ;
94:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>