Re: mtable positioning in MathML Core

Hi Neil;
"which specific CSS feature I'm trying to use" is exactly my question:
Which feature *should* I use to get the effect of (full) mtable's align="baseline 1"?

  Are you suggesting that
     align-content: first baseline;
is what I'm looking for? It doesn't seem to help in Chrome.
All the other tricks I find seem to want me to change the display property
of the mtable (from table), which doesn't seem helpful.

As for a general polyfill, all I can say so far is that @columnalign wasn't too hard :>

Thanks;
bruce

On 12/1/22 2:48 PM, Neil Soiffer wrote:
> According to 
> https://developer.mozilla.org/en-US/docs/Web/CSS/align-content#browser_compatibility 
> <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdeveloper.mozilla.org%2Fen-US%2Fdocs%2FWeb%2FCSS%2Falign-content%23browser_compatibility&data=05%7C01%7Cbruce.miller%40nist.gov%7Cae796cc49093442fb20108dad3d523f4%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C638055209634388729%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=MbrZx%2B%2BoHNuixcbOuDrLM2aHbkyTpMBA7udpIF%2FxF50%3D&reserved=0>, most CSS alignment is implemented. You didn't mention which specific feature in CSS you are trying to use. I'm dubious that it is "easily" done because usually CSS deals with parent-child relationships. In this case, it is a parent-grandchild relationship.
> 
> The mtable polyfill only handles mlabelledtr and needs to be expanded (I'll add an issue 
> if there isn't one already). At the time I wrote the polyfill, it wasn't clear whether any 
> of the MathML mtable attrs would end up in core or not. The polyfill will need to handle 
> it by doing some measurements and then (likely) use CSS (absolute position) or mpadded to 
> do the appropriate shift.
> 
>      Neil
> 
> 
> On Thu, Dec 1, 2022 at 8:17 AM Miller, Bruce R. (Fed) <bruce.miller@nist.gov 
> <mailto:bruce.miller@nist.gov>> wrote:
> 
>     Hi all;
>         I'm wondering what the proper modern CSS method
>     is to achieve the equivalent of MathML Full's
>         <mtable align="baseline 1" ...
>     given that that attribute is not included in Core.
> 
>     That is, to align the table (as a whole) so that
>     the baseline (or math axis, or ...) of the 1st row
>     lines up with the baseline of its siblings.
> 
>     CSS Box Alignment level 3 looks like it should answer that,
>     but I can't quite apply it (or it isn't implemented in Chrome?)
> 
>     Thanks;
>     bruce
>     -- 
>     bruce.miller@nist.gov <mailto:bruce.miller@nist.gov>
>     http://math.nist.gov/~BMiller/ <http://math.nist.gov/~BMiller/>
> 

-- 
bruce.miller@nist.gov
http://math.nist.gov/~BMiller/

Received on Friday, 2 December 2022 00:23:57 UTC