Re: Change color after a line break

[Marc Hohl]

Am 19.07.2015 um 11:03 schrieb David Kastrup:
> David Kastrup <address@hidden> writes:
>
> > Marc Hohl <address@hidden> writes:
> >
> > > Thanks a lot! Just to check that I have understood the underlying
> > > mechanism, I rewrote that according to
> > >
> > > overrideColorForAll =
> > > #(define-music-function (color) (color?)
> > > #{ #@(map (lambda (dsc)
> > >              (propertyOverride (list 'Score (car dsc) 'color) color))
> > >       all-grob-descriptions)
> > > #})
> > >
> > > which seems to do the trick as well without switching between Scheme
> > > and LilyPond whithin overrideColorForAll.
> >
> > If you want to avoid switching to LilyPond, you can of course replace
> > #{ address@hidden #} with (make-simultaneous-music ...).
>
> make-sequential-music of course.  Doesn't usually make a difference, but
> look at
>
> {
>    <<
>      \override NoteHead.color = #red
>      \override Stem.color = #red
>    >>
>    c'2 2
> }
>
> for a case where it _does_ make a difference.

Huh, wow.

So I rewrote the function, and just for the record, it is

overrideGrobColor =
#(define-music-function (color) (color?)
   (make-sequential-music
     (map (lambda (dsc)
            (propertyOverride (list 'Score (car dsc) 'color) color))
          all-grob-descriptions)))

\relative c' {
   \overrideGrobColor #(x11-color 'blue)
   c4\pp\< d e f
   \break f1 \stopStaff
   \overrideGrobColor #(x11-color 'red)
   \startStaff
   \grace { g16[( a g fis]) } g1\ff\!
}

Thanks a lot for your help and the detailed explanations!

Marc



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