Henning Hraban Ramm schrieb am 04.07.2023 um 22:24:
Thanks to Taco, Robbert and Jules for their work!
I used the downtime to setup a presentation style with a progress bar
in the footer. But I get the same (first page) graphics on all pages,
and the footer background appears under the text area as well as under
the margins.
* I thought \useMPgraphics would be enough to re-calculate on every page?
* How can I set a background to the footer area, but page width?
* I tried \overlaywidth as well as OverlayWidth in the MP graphic –
how do I get the page size?
You need \setupbackgrounds[state=repeat].
\setuppapersize[SW]
\startuseMPgraphic{Blocks}
fill unitsquare xysized (OverlayWidth * PageNumber / LastPageNumber,
OverlayHeight) withcolor blue;
%setbounds currentpicture to OverlayBox;
\stopuseMPgraphic
\defineoverlay[Blocks][\useMPgraphic{Blocks}]
\setupbackgrounds[state=repeat]
\setupbackgrounds[footer][text][background=Blocks]
\starttext
\dorecurse{10}{\recurselevel\page}
\stoptext
Wolfgang
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