color expansion (not colo-new related)

color expansion (not colo-new related)

[Peter Rolf]

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Hi all,

I tried to seperate some style specific code to external variables. Most
things work so far, but the expansion of color causes me problems. I
must emphasize that this is no colo-new problem, as my code fails with
the old colo-ini too.

I have tried several things, but still no luck. What (expansion) magic
is missing in my code? Any help is welcome.

Peter

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\setupcolors[state=start]

\newconditional\CondA
\newconditional\CondB
\newconditional\CondC

% state dependend color
\def\GetFGcolor#1#2#3#4#5{%
  \ifconditional\CondA
    \ifconditional\CondC#4
    \else#5\fi
  \else
    \ifconditional\CondB#1
    \else
      \ifconditional\CondC#2
      \else#3\fi
    \fi
  \fi}%


\starttext

%\settrue\CondA
%\settrue\CondB
\settrue\CondC

\setvariables[FOO][foregroundcolor=\GetFGcolor{red}{green}{blue}{lightgray}{darkgray}]

\color[red]{color} is working.

\edef\FGcolor{\getvariable{FOO}{foregroundcolor}}
%\edef\FGcolor{\GetFGcolor{red}{green}{blue}{lightgray}{darkgray}}
FGcolor=\FGcolor


foregroundcolor= \color[\FGcolor]{\getvariable{FOO}{foregroundcolor}}% no color here

\stoptext


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Re: color expansion (not colo-new related)

[Hans Hagen]

Peter Rolf wrote:
> Hi all,
> 
> I tried to seperate some style specific code to external variables. Most
> things work so far, but the expansion of color causes me problems. I
> must emphasize that this is no colo-new problem, as my code fails with
> the old colo-ini too.
> 
> I have tried several things, but still no luck. What (expansion) magic
> is missing in my code? Any help is welcome.

\def\GetFGcolor#1#2#3#4#5{%
   \ifconditional\CondA
     \ifconditional\CondC#4%
     \else#5\fi
   \else
     \ifconditional\CondB#1%
     \else
       \ifconditional\CondC#2%
       \else#3\fi
     \fi
   \fi}

you introduce spaces

btw, often its easier to remap colors



\def\test{\color[whatever]{some color}}

\definecolor[whatever][green] test
\definecolor[whatever][red] test

or to use palets or ...


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: color expansion (not colo-new related)

[Peter Rolf]

Hans Hagen schrieb:
> Peter Rolf wrote:
>> Hi all,
>>
>> I tried to seperate some style specific code to external variables. Most
>> things work so far, but the expansion of color causes me problems. I
>> must emphasize that this is no colo-new problem, as my code fails with
>> the old colo-ini too.
>>
>> I have tried several things, but still no luck. What (expansion) magic
>> is missing in my code? Any help is welcome.
> 
> \def\GetFGcolor#1#2#3#4#5{%
>    \ifconditional\CondA
>      \ifconditional\CondC#4%
>      \else#5\fi
>    \else
>      \ifconditional\CondB#1%
>      \else
>        \ifconditional\CondC#2%
>        \else#3\fi
>      \fi
>    \fi}
> 
> you introduce spaces
>
yes, stupid me :)

> btw, often its easier to remap colors
> 
> 
> 
> \def\test{\color[whatever]{some color}}
> 
> \definecolor[whatever][green] test
> \definecolor[whatever][red] test
> 
> or to use palets or ...
> 
I will think about it.

Thanks Hans!

> 
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>       tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
>                                               | www.pragma-pod.nl
> -----------------------------------------------------------------
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
> 

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________