Re: problem to code page-numbers

[Jan-Peter Voigt]

Hi Harm,

the markup-code in the footer and header is called several times for 
each page. I can't tell you why and how often, (but I think it should be 
3 times ;) ) but you might keep track of the processed page.
So you might check, if you checked the current page.

Cheers,
Jan-Peter

Am 14.08.2015 um 12:01 schrieb Thomas Morley:
> Hi,
>
> I'm trying to put out a \book, affecting the page-numbers in a certain way.
> Ofcourse this should happen under certain conditions.
>
> Look at the minimal example below.
> All I try to affect is the `counter', if the page is the last of the bookpart.
> I had expected that the counter would get up to 3 (starting at 1 and
> two bookparts having a last page)
> Instead it goes up to 9.
>
> No idea why it's called nine times.
>
> \version "2.19.24"
>
> #(define counter 1)
>
> #(define (test layout props arg)
>
>      (if (chain-assoc-get 'page:is-bookpart-last-page props #f)
>          (set! counter (1+ counter)))
>
>      (newline) (format #t "I'm called ~a. time" counter)
>
>      (interpret-markup layout props arg))
>
> \paper {
>    print-first-page-number = ##t
>    oddHeaderMarkup = \markup
>    \fill-line { \on-the-fly #test \fromproperty #'page:page-number-string }
>    evenHeaderMarkup = \markup
>    \fill-line { \on-the-fly #test \fromproperty #'page:page-number-string }
> }
>
> \book {
>    \bookpart { \repeat unfold 3 { d''1 \pageBreak } }
>    \bookpart { \repeat unfold 4 { e''1 \pageBreak } }
> }
>
>
> Any hints?
>
>
>
>
> Cheers,
>    Harm
>
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