Re: global alignment tweak for ChordName

[Jean Abou Samra]

Le 21/12/2021 à 21:33, David Kastrup a écrit :
> Kieren MacMillan <kieren@kierenmacmillan.info> writes:
> > Hi again,
> >
> > When I try to use it in my main file, I get this:
> >
> >   In procedure ly:stencil-extent in expression (ly:stencil-extent sten X):
> > /Users/kmac/Documents/01_music/scores/_include/paper/musical.ily:254:21:
> > Wrong type argument in position 1 (expecting Stencil): #f
> >
> > Any thoughts about what might be going wrong?
> It is applied to a grob that has been given the \omit treatment?


Certainly. Kieren, try this:

\version "2.22.1"

\layout { ragged-right = ##f }

music = \chordmode {
  c1 c:7 c:m7 c':m6.4.2/ees \once \omit ChordName c
}

\score {
  <<
    \new ChordNames \music
    \new Staff \music
  >>
  \layout {
    \context {
      \Score
      \override ChordName.X-offset =
      #(lambda (grob)
         (let ((sten (ly:grob-property grob 'stencil)))
           (if (ly:stencil? sten)
               (let* ((xex (ly:stencil-extent sten X))
                      (width (interval-length xex)))
                 (max -2 (* -0.5 (max 0 (- width 2))))))))
    }
  }
}
%%%%

Best,
Jean