[NTG-context] Re: MetaPost lines in tables?

[Wolfgang Schuster <wolfgang.schuster.lists@gmail.com>]

Henning Hraban Ramm schrieb am 21.02.2024 um 19:04:
> Am 19.02.24 um 23:15 schrieb Wolfgang Schuster:
>> Henning Hraban Ramm schrieb am 19.02.2024 um 22:39:
>>> I guess I asked this a while ago, but I can’t find an answer:
>>> Is it possible to replace the lines of a TABLE with my own MetaPost 
>>> graphics?
>>>
>>> ATM I’m trying to place my MP lines behind a frame-less TABLE; it 
>>> will probably work, but it’s a crutch…
>>
>> The example below draws a custom border for the whole cell but you're 
>> free to draw only certain sides (leftboundary etc. helps) but don't 
>> forget to set the boundary box for the graphic (OverlayBox is the size 
>> of the cell).
>>
>> %%%% begin example
>> \startuseMPgraphic{dottedborder}
>>    draw OverlayBox withpen pencircle scaled 2 dashed withdots 
>> withcolor "red";
>> \stopuseMPgraphic
>>
>> \defineoverlay[dottedborder][\useMPgraphic{dottedborder}]
>>
>> \starttext
>>
>> \bTABLE[frame=off,background=dottedborder]
> 
> Thank you!
> 
> Since I needed only horizontal lines, I forced the height with an 
> “invisible“ line:
> 
> \startuseMPgraphic{dottedborder}
>     draw (0,0)--(0,OverlayHeight) withpen pencircle scaled 0.001 
> withcolor white;
>     draw (0,0)--(OverlayWidth,0) withpen pencircle scaled 2 dashed 
> withdots withcolor "red";
> \stopuseMPgraphic
> 
> … but it would be visible on a colored background. I’m sure you can show 
> me a better way…

\startuseMPgraphic{dottedborder}
   draw bottomboundary OverlayBox withpen pencircle scaled 2 dashed 
withdots withcolor "red";
   setbounds currentpicture to OverlayBox;
\stopuseMPgraphic

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

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________