Re: Label placed at end of \book not recognised in \paper

[Jean-Charles Malahieude]

Le 21/01/2014 19:14, Tom van der Hoeven disait :
> below you will find an example. It is made such that on the first page
> there is no room left.
> As you can see I use the last page in order to get the number of pages
> of a book.
> I found this solution on the internet, it works but it is not straight
> forward.
> I should like to do something like : print number-of-book-pages
> In the Internal Reference book I found the variable ly:paper-book-pages
> But I have no idea how to use this function in the \paper context.
>
> ---------------------
> \version "2.18.0"
>
> \paper{
>    print-first-page-number = ##t
>      oddFooterMarkup = \markup {
>      \column {
>        \fill-line {
>          \line {
>            Blz
>            \on-the-fly #print-page-number-check-first
>            \fromproperty #'page:page-number-string
>            "van  " \concat {\page-ref #'npages "0" "?"}
>          }
>        }
>      }
>    }
> }
>
> \header { title = "Example" }
>
> \book {
>
>    \score {
>      { \repeat unfold 18 {c''1 \break}  }

replace with:
{ \repeat unfold 17 {c''1 \break}  c''1\label #'npages }
>      \layout {
>        \context {
>          \Score
>          \override NonMusicalPaperColumn #'line-break-permission = ##f
>          \override NonMusicalPaperColumn #'page-break-permission = ##f
>                 }
>              }
>    }

and suppress those next two lines (\label + \markup)
>    \label #'npages
>    \markup{}
> }

Cheers,
Jean-Charles