Re: Strange result with 2 columns and textbackground

[h h extern <pragma@wxs.nl>]

VnPenguin wrote:
> Hi,
> I do a small test with 2 columns and textbackground :
> ------------------------------------------------------------------------------------
> \setupcolors[state=start]
> \definetextbackground[preface]
>     [backgroundcolor=green,
>     backgroundoffset=.25cm,
>     offset=.5cm,
>     frame=off,
>     location=paragraph,
>     color=blue]
> 
> \starttext
> \chapter{Chapter TEST}
> \startcolumns[rule=off,n=2]
> \starttextbackground[preface]
> 
> \section{tufte.tex}
> \input tufte
> 
> \section{knuth.tex}
> \input knuth
> 
> \stoptextbackground
> \stopcolumns
> 
> \stoptext
> -----------------------------------------------------------------------------
> The result is very strange : 
>  http://people.vnoss.org/~vnpenguin/pub/context/test-bgcolor.png
>  http://people.vnoss.org/~vnpenguin/pub/context/test-bgcolor.pdf
> 
> I'm wrong some things ?

no, you uncovered a secret: these backgrounds are only supported on one column 
mode and column sets; i did a quick hackery test and it is possible to add 
support for multi-columns, but the complication is that it currently interferes 
with mixed one/multi columns (it only takes a few lines of code, but then you 
have half a solution.

i need to separate the multi column sub-output routine first as well as to add 
an otr state tracking system in order to get this working robustly; remind in 
half a year or so

ntw, if you want just backgrounds behind columns:

\setupcolors[state=start]

\setupcolumns[option=background,background=color,backgroundcolor=red]

\starttext

\chapter{Chapter TEST}

\input tufte

\startcolumns
   \section{tufte.tex} \input tufte
   \section{knuth.tex} \input knuth
\stopcolumns

\input tufte

\stoptext


Hans

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