Re: [NTG-context] working on page refs with MP
yes I had realized this already but I still don't know how to get those
page numbers down into MP - they keep being strings with macro code instead
is there a way the I can get \setupMPvariables[hdrPgs] in
\setupheadertexts[\setups{page:header}]
to be fully evaluated and stored as the page number in the MPvariables
first= and next= ??
\startsetups page:header
\setupMPvariables[hdrPgs]
[curr=\pagenumber,
first={\ref[page][\headerfirst]},
next={\ref[page][\headernext]}]
I've tried \expanded and \numeric without success
or alternatively in MP how would I call TeX (from MP) with a string like
"\ref[page][a]" and have the page number stored in a numeric var?
Thanks in advance,
Werner
Am 18.03.21 um 19:55 schrieb Hans Hagen:
On 3/18/2021 6:14 PM, Werner Hennrich wrote:
metafun > log >
metafun > log > error: Improper subscript has been replaced
by zero
metapost > log > <*> ... numeric numFirst; numFirst := \ref
[page]
watch closely to the previous log line ... you're missing quotes so mp
sees \ref [page] and as it ignores a \ it sees ref[page] which unless
you defined 'ref' and 'page' triggers an error
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-
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Re: [NTG-context] working on page refs with MP
On 3/18/2021 6:14 PM, Werner Hennrich wrote: metafun > log > metafun > log > error: Improper subscript has been replaced by zero metapost > log > <*> ... numeric numFirst; numFirst := \ref [page] watch closely to the previous log line ... you're missing quotes so mp sees \ref [page] and as it ignores a \ it sees ref[page] which unless you defined 'ref' and 'page' triggers an error - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
[NTG-context] working on page refs with MP
Hello everyone,
I'm having page references and want to calc / draw 'Page x of y' for
some subsections in MP.
How can I pass 'em down so I end up with numbers to do calculations with?
\setuplayout[header=15mm]
\def\myHeader[#1]#2{
\ignorespaces
\getdummyparameters[ref=,next=,#1]
\pagebreak[yes]
\pagereference[\dummyparameter{ref}]
\doassign[header][first=\dummyparameter{ref}]
\doassign[header][next=\dummyparameter{next}]
{\tfc\bf{#2}}\par
\vskip3mm
}
\def\fillWithText[#1]{
\dorecurse{#1}{
\input tufte
\input knuth
}
}
\setupheadertexts[\setups{page:header}]%
\startsetups page:header
\setupMPvariables[hdrPgs]
[curr=\pagenumber,
first={\ref[page][\headerfirst]},
next={\ref[page][\headernext]}]
\framed[
frame=off,
background={hdrPgs}
]{}% all to be done in MP
\stopsetups
\defineoverlay[hdrPgs][\useMPgraphic{hdrPgs}]
\startuseMPgraphic{hdrPgs}
StartPage; % calc and draw 'Page x of y'
numeric numCurr; numCurr := \MPvar{curr};
string strFirst; strFirst := "\MPvar{first}";
string strNext; strNext := "\MPvar{next}";
message("===");
message("MP_hdrPageNrs: curr="& tostring numCurr & ", sFirst="&
strFirst & ", sNext="& strNext);
% fails:
numeric numFirst; numFirst := \MPvar{first};
StopPage;
\stopuseMPgraphic
\starttext
\myHeader[ref=a,next=b]{ AaAaAaAa}
\fillWithText[10]
\myHeader[ref=b,next=c]{ BbBbBbBbBb}
\fillWithText[3]
\myHeader[ref=c,next=d]{ c CcCcCcCc}
\fillWithText[8]
\myHeader[ref=c,next=last]{ d DdDdDdDdDd}
\fillWithText[8]
\pagebreak[yes]
\pagereference[last]
This is the last page, goodby
\stoptext
metapost > message : MP_hdrPageNrs: curr=1, sFirst=\ref
[page][a], sNext=\ref [page][b]
metafun > log >
metafun > log > error: Improper subscript has been replaced by zero
metapost > log > <*> ... numeric numFirst; numFirst := \ref [page]
metafun > log >
metafun > log > A bracketed subscript must have a known numeric
value;
So MP gets the macro and tries array access... I tried \expanded,
\numeric, and resolving the page numbers via \ref[page][id] at the
various code levels - unsuccessfully so far - and out of wit now.
TIA, Werner
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