Re: Titles

[Kieren MacMillan]

Hi Ralph,

> I don't always have a meter or composer, but I think I know how to  
> deal with that.
> With some help from Valentin, I've come close, using his suggestion:
>
> \paper{
>  scoreTitleMarkup = \markup { \column {
>      \fill-line {
>        \fromproperty #'header:meter
>        \fromproperty #'header:poet
>      }
>    }
>  }
> }

I use the following function:

#(define-markup-command (when-property layout props symbol markp)  
(symbol? markup?)
  (if (chain-assoc-get symbol props)
      (interpret-markup layout props markp)
      (ly:make-stencil '()  '(1 . -1) '(1 . -1))))

Then I can code things like

	\when-property #'header:dedication \fill-line { \italic  
\fromproperty #'header:dedication }
                \when-property #'header:dedication \vspace #1

and it only gets evaluated (i.e., only takes up space in my titling)  
when the dedication property has been set.

HTH!
Kieren.