[NTG-context] Working with conditionals

luigi scarso luigi.scarso at gmail.com
Mon Jan 3 11:05:59 CET 2011


2011/1/3 Vianney le Clément <vleclement at gmail.com>:
> \def\Title{\dodoubleempty\doTitle}
> \def\doTitle[#1][#2]{
>  \ifsecondargument
>     \testpage[#2]
>  \else
>     \testpage[10]
>  \fi
>  \startalignment[center]
>  {
>     \blank[2*big]
>     \switchtobodyfont[1.5em]
>     \bf\em#1
>  }
>  \blank
>  \stopalignment
> }
>
> Vianney
>
> On Mon, Jan 3, 2011 at 10:46, Cecil Westerhof <cldwesterhof at gmail.com> wrote:
>> I have the folowing function for a title:
>> \def\Title[#1]{
>>  \testpage[10]
>>  \startalignment[center]
>>  {
>>      \blank[2*big]
>>      \switchtobodyfont[1.5em]
>>      \bf\em#1
>>  }
>>  \blank
>>  \stopalignment
>> }
>>
>> What I would like is that there is an optional second parameter. When
>> it is there, it is used in the testpage command. Otherwise the default
>> value is used. How would I do this?
>>
>> --
>> Cecil Westerhof
>> ___________________________________________________________________________________
>> If your question is of interest to others as well, please add an entry to the Wiki!
>>
>> maillist : ntg-context at ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
>> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
>> archive  : http://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 at ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>
You can also use a key/value approach, which is more flexible

\unprotect
\def\Title[#1]{
 \getparameters[CecWes@@][param1={default},param2={default2},
param3={default3},#1]
 \testpage[10]
 \startalignment[center]
 {
     \blank[2*big]
     \switchtobodyfont[1.5em]
     \bf\em\getvalue{CecWes@@param1}
 }
 \blank
 \stopalignment
}
\protect


\starttext
....
%% param1= FOO, param2=BOO, param3=default3
%% the order is not important
\Title[param2={BOO},param1={BOO}]

.....
\stoptext


-- 
luigi


More information about the ntg-context mailing list