On 5-9-2011 14:36, Peter Rolf wrote:
Hi,
I noticed some problems with transparency colors lately. But every time
I tried to make a minimal example out of it, the code worked. Now, by
chance, I found a not working example.
\setuppagenumber[state=stop]
\definecolor[tcolor][r=1,a=1,t=.6]
\definetextbackground[ghost]
[background=color,backgroundcolor=tcolor]
\starttext
\starttextbackground[ghost]
FOO
\stoptextbackground
\stoptext
Here the error message...
metapost> terminal:>> (redpart boxfillcolor,greenpart
boxfillcolor,bluepart boxfillcolor)
1
! Equation cannot be performed (color=numeric).
<to be read again>
withprescript
transparent->1withprescript
"tr_alternative="&decimal.transparency_alternativ...
<*> ... boxfillcolor := transparent(1,0.6,(1,0,0))
; boxfilloffset :=
0.0pt ...
! Extra tokens will be flushed.
This is a side effect of no longer using the ugly color hackery on the
one hand (using scripts instead) and mp having 3 color related data
types that don't carry scripts themselves.
This means that we cannot assign colors (with transparencies) reliable.
I made a patch (at the mp macro level) for the backgrounds but more
placed might need patching. So, from now on we will also have different
files for mp: mpii and mpiv.
I uploaded a beta, so best do some testing right away as i might have
messed up,
Hans
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