--- gforth/ansi.fs 2000/09/23 15:46:51 1.5
+++ gforth/ansi.fs 2001/06/14 19:10:23 1.6
@@ -1,4 +1,4 @@
-\ ANSI.STR Define terminal attributes 20may93jaw
+\ ansi.fs Define terminal attributes 20may93jaw
\ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
@@ -19,25 +19,28 @@
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
-\ If you want another terminal you can redefine
-\ the colours.
+\ If you want another terminal you can redefine the colours.
\ But a better way is it only to redefine SET-ATTR
\ to have compatible colours.
\ Attributes description:
-\ B ( colour -- x ) Colour is Background colour
-\ >F ( colour -- x ) Colour is Foreground colour
-\ Attributes may be used freely
-\ A> ( -1 x .. x -- attr )
-\ Return over all attribute
-\ only 12 Bits are used up to now!
+\ ( -1 x .. x -- attr ) Terminate an attributes description and
+\ return overall attribute; currently only
+\ 12 bits are used.
+\
+\ >BG ( colour -- x ) x is attribute with colour as Background colour
+\ >FG ( colour -- x ) x is attribute with colour as Foreground colour
+\
+\ SET-ATTR ( attr -- ) Send attributes to terminal
+\
+\ BG> ( attr -- colour) extract colour of Background from attr
+\ FG> ( attr -- colour) extract colour of Foreground from attr
+\
+\ See colorize.fs for an example of usage.
-\ SET-ATTR ( attr -- ) Send attributes to terminal
-
-\ To do: Make State smart and compile
-\ only literals!
+\ To do: Make State smart and only compile literals!
needs vt100.fs
@@ -59,11 +62,11 @@ decimal
\ For portable programs don't use invers and underline
-: >B 4 lshift ;
-: >F >B >B ;
+: >BG 4 lshift ;
+: >FG >BG >BG ;
-: B> 4 rshift 15 and ;
-: F> 8 rshift 15 and ;
+: BG> 4 rshift 15 and ;
+: FG> 8 rshift 15 and ;
: BEGIN over -1 <> WHILE or REPEAT nip ;
@@ -75,8 +78,8 @@ DEFER Attr!
: (Attr!) ( attr -- ) dup Attr @ = IF drop EXIT THEN
dup Attr !
ESC[ 0 pn
- dup F> ?dup IF 30 + ;pn THEN
- dup B> ?dup IF 40 + ;pn THEN
+ dup FG> ?dup IF 30 + ;pn THEN
+ dup BG> ?dup IF 40 + ;pn THEN
dup Bold and IF 1 ;pn THEN
dup Underline and IF 4 ;pn THEN
dup Blink and IF 5 ;pn THEN
@@ -85,7 +88,7 @@ DEFER Attr!
' (Attr!) IS Attr!
-: BlackSpace Attr @ dup B> Black =
+: BlackSpace Attr @ dup BG> Black =
IF drop space
ELSE 0 attr! space attr! THEN ;