Per slide or per fragment background color

[Kabouik]

It would be pretty nice to be able to set the background color, as this can be used to emphasize on some things or distinguish parts of a talk. present for instances has this feature (and some others, like effects), but it is missing full image support (among other things) so present and patat are not really interchangeable.

[jaspervdj]

Thanks for reporting! Looks like present uses this syntax on the first line of a slide:

<!-- fg=black bg=yellow -->

This seems compatible with what syntax patat uses right now, as we already ignore HTML comments. I'll see if I can hack on it a bit during ZuriHac.

[Kabouik]

Nice, I hope your attempts will be conclusive.

Do you foresee it would be technically possible to extend that to fragments, or maybe to make the background a fragment itself? I am new to patat but I assume fragments are limited (I think fragments can only be shown, not hidden, nor shown then hidden, and they can only appear from top to bottom of the text body), so perhaps this would imply more profound changes on fragments and would be a totally different task.

[jaspervdj]

I did part of this in #148, which adds a per-slide configuration. The background color isn't customizable but that can be tackled separately.