These were removed from j601. But how else can
one specify the color of gaps and text backdrop?
glbkcolor '' ; set current background color to current color (last grgb).
Background color is
used in the gaps in styled lines and as the background for text.
glbkmode bool ; (noop java) set background mode for gbkcolor to OPAQUE with 0,
or TRANSPARENT with
1
This seems to be not necessary, since Text can use
the pen color.
gltextcolor '' ; glrgb color is set as color of text for gtext
An idea to simplify setting color is instead of
glpen 1,0 [ glrgb 16b77 16b99 16bbb
glbrush'' [ glrgb 16b77 16b99 16bbb
glbrushnull''
glbkmode 0[ glbkcolor'' [ glrgb 16b77 16b99 16bbb
glbkmode 1
to use integer color as in HTML and CSS
glpen 1,0,16b7799bb
glbrush 16b7799bb
glbrush _1 NB. unsigned 16bffffffff
glbkcolor 16b7799bb
glbkcolor _1
where the high byte in integer sets transparency,
from 0=opaque to 255=transparent (values 128-255
will produce negative integers).
transcol=: (23 b. 24&(32 b.))~ NB. endian-neutral
16b7f transcol 16bffffff
2147483647
,hfd a.i.|.2 (3!:4) 16b7f transcol 16bffffff
7FFFFFFF
16b80 transcol 16bffffff
_2130706433
,hfd a.i.|.2 (3!:4) 16b80 transcol 16bffffff
80FFFFFF
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
