Re: table background color in first row

[Aditya Mahajan <adityam@umich.edu>]

On Fri, 12 Nov 2010, Hans Hagen wrote:

> On 11-11-2010 10:54, Aditya Mahajan wrote:
>> This is mainly for completeness:
>> 
>> On Thu, 11 Nov 2010, Manfred Lotz wrote:
>> 
>>> and like to have a light gray background for the heading row.
>> 
>>> \starttext
>>> 
>>> \starttable[|l|l|]
>> \BL[2] \SR
>> % or
>> % \CL[gray] \SR
>>> \NC \bf Colheader 1 \NC \bf Colheader 2 \NC \SR \HL
>>> \NC cell 11 \NC cell 12 \NC \FR
>>> \NC cell 11 \NC cell 12 \NC \LR
>>> \stoptable
>>> 
>>> \stoptext
>> 
>> Both \BL and \CL work with MkII but in MkIV \BL gives a black rule
>> (rather than gray), which \CL gives an error. Hans, any ideas?
>> 
>> For a simple table, you can also use
>> 
>> \startTABLE
>> \NC .... \NC ... \NC \NR
>> \NC .... \NC ... \NC \NR
>> \stopTABLE
>> 
>> which is wrapper around \bTABLE .. \eTABLE.
>
> The color handling in the old table module is implemented by overloading 
> TaBlE code and quite a hack. In mkiv it's easy to add color support but then 
> I'd rather remove some of the old commands. In tabulate one can do 
> (experimental so not enabled by default):
>
> \ctxlua{nodes.tasks.enableaction("shipouts","nodes.handlers.backgrounds")}
>
> \starttabulate[||p||]
> \NC test \NC test \NC test \NC \NR
> \NC test \NC[green] \input tufte  \NC[yellow] test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC[blue] test \NC[red] test \NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC test \NC[gray] test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC[blue] test \NC test \NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC test \NC[magenta] test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC[cyan] \dorecurse{10}{\input ward }\NC test \NC \NR
> \NC test \NC test \NC test \NC \NR
> \NC test \NC[yellow] test \NC test \NC \NR
> \stoptabulate

Can you also add vertical lines and row background colors?

> So, if there's interest in the \starttable .. \stoptable mechanism (i have no 
> idea how often it is used) I can consider weeding and redoing some of that 
> code (or just rewrite it from scratch which is probably easier).

Personally, I do not like the \starttable ... \stoptable macros (the 
patchup with TaBlE macro is too convoluted)  and am happy with the compact 
\startTABLE syntax. But then, I don't use tables too often anyways.

Aditya
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