Re: Title for tabulate

[Benjamin Buchmuller via ntg-context <ntg-context@ntg.nl>]

Hi!

I'd like to follow up on a problem that Denis came across recently with the titles argument in tabulate. (It's more a solution than a question, but any hints to improve the answer are welcome.) I wanted to use this argument for an easy specification of, well, a title for a "recipe". The advantage is that all information is held together and it's easy to use for people who are not (too) familiar with ConTeXt.

So, in one file I can define all styles (which the end-user would not need to see):

\definetabulate[recipe][|l|l|p|l|]

\setuptabulate
	[recipe]
	[
	bodyfont=small,
	distance=medium,
	before={\blank[back, small]},
	header=text,
	headstyle=\bi, % this formats the "\BC" cells
	headcolor=red, % this formats the "\BC" cells
	]


\starttext

And then use:

\startrecipe[title={Whatever mixture 1}]
\FL 
\NC Absolute \BC Stock \NC Ingredient \NC Final \NR 
\HL
\NC 1 \NR
\LL
\stoprecipe

\startrecipe[title={Whatever mixture 2}]
\FL 
\BC Absolute \BC Stock \BC Ingredient \BC Final \NR 
\HL
\NC 1 \NR
\LL
\stoprecipe

\stoptext

etc.

However, I cannot change the way the title is styled (or spaced from the table) unless I do "title={\bi Some text.}". However, blank commands are also stripped off at this place. (I also don't get a clue from the source if there is any argument to spike-in some formatting.) 

So, if there is no easy way to access this one, we can work around:

\definetabulate[recipetab][|l|l|p|l|]

\setuptabulate
	[recipetab]
	[
	bodyfont=small,
	distance=medium,
	before={\blank[back, small]},
	% header=text, % THIS MUST NOT BE "text"
	headstyle=bold,
	headcolor=red,
	]

\define\startrecipe{\dodoubleempty\dostartrecipe}

\long\def\dostartrecipe[#1][#2]#3\stoprecipe{%
	\iffirstargument
		{\bi #1}\blank[medium]
	\fi
	\ifsecondargument
		\startrecipetab[#2]
		#3
		\stoprecipetab
	\else
		\startrecipetab
		#3
		\stoprecipetab
	\fi
}

\startrecipe[Head 1]
\FL
\BC Absolute \BC Stock \BC Ingredient \BC Final \NR 
\HL
\NC 1 \NR
\LL
\stoprecipe

\startrecipe[Head 2][headcolor=blue] % pass on arguments to tabulate
\FL
\BC Absolute \BC Stock \BC Ingredient \BC Final \NR 
\HL
\NC 1 \NR
\LL
\stoprecipe

Small question though: Is there a ConTeXt way to "\long\def" or a simple way ("user interface") to filter a list of arguments for a specific key=val pair, e.g. to make a single optional argument with headertitle={Some header.}?

Best


Benjamin

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