Dear list,
I've got a problem. Not the first one, but the first one to contribute to the
list. ;)
system> ConTeXt ver: 2024.04.01 08:59 LMTX fmt: 2024.4.12 int:
english/english
system> 'cont-new.mkxl' loaded
%==========
%==========
\definehead[Datum][subsubsubject]
\startsetups[Test]
Pr=(\getmarking[Datum][previous])~
Nx=(\getmarking[Datum][next])~
Fi=(\getmarking[Datum][first])~
La=(\getmarking[Datum][last])~
Tp=(\getmarking[Datum][top])~
Bt=(\getmarking[Datum][bottom])~
Cu=(\getmarking[Datum][current])~
\stopsetups
\setupheadertexts[text]
[\setups{Test}][]
[\setups{Test}][]
\setuppagenumbering[location=footer]
\starttext
\startDatum[title={secA}]%
\dorecurse{50}{aaa }
\pagebreak
\dorecurse{50}{aaa }
\stopDatum
\startDatum[title={secB}]%
\dorecurse{630}{bbb }
\stopDatum
\startDatum[title={secC}]%
\dorecurse{50}{ccc }
\stopDatum
\startDatum[title={secD}]%
\dorecurse{50}{ddd }
\stopDatum
\startDatum[title={secE}]%
\dorecurse{50}{eee }
\stopDatum
\stoptext
%==========
%==========
I'd like to write the marking of the very first text at the current page to the
header. That seems to be a bit tricky, at least for me. (I'm afraid that
\getmarking[xxx][top] was intended for that and it is not feasible at all.)
At page 1 the header should read "secA", at page 2 again "secA" (because the
very first text belongs to "secA"), and at page 3 "secC" (because the very
first text (the section title) belongs to "secC"). Unfortunatly \getmarking[][]
does not behave like I expacted.
I understand the keywords of \getmarking in the wiki
(https://wiki.contextgarden.net/Command/getmarking) as listed below:
• previous: marking at the bottom of the page BEFORE the current page (no page
before then empty)
• next: marking at the top of the page AFTER the current page (no page after
then bottom of current page)
• top: marking at the top of the current page
• bottom: marking at the bottom of the current page
• first: first marking that starts at the current page (no first than behaving
like top)
• last: last marking that starts at the current page (no last than behaving
like bottom)
• current: last stored marking while deciding on pagebreaking between the
current page and the (potential) following page
• default: first
According to these thoughts, I started with \getmarking[Datum][top]. But "top"
seems not to work, there is no difference between "top" and "first", "top"
behaves like "first".
My second thought: Generally \getmarking[Datum][first] would be perfect, so
I've thought something like
\doifelse{\fetchmark[Datum][next] of the page before the current
page}{\fetchmark[Datum][previous]}
{\getmarking[Datum][previous]}
{\getmarking[Datum][first]}
could work. (Honestly I don't know how to do "\fetchmark[Datum][next] of the
page before the current page}". The first page would need a special treatment
too.)
But: At page 2 \getmarking[Datum][next] (Nx) contains "secB" but at top of page
3 is not "secB" but "secC". So \getmarking[Datum][next] does not seem to
contain the correct information I need, therefore I don't get any further.
Any ideas: How do I write the marking of the very first text at the current
page to the header?
Thank you in advance, Matthias
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