Re: [NTG-context] Working with conditionals

3 Jan 2011

      2011/1/3 Vianney le Clément :
...
\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  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
___________________________________________________________________________________
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___________________________________________________________________________________
___________________________________________________________________________________
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  : 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

Re: [NTG-context] Working with conditionals

luigi scarso