Re: Tweaking the string number: no circle, and to the right?

[Jean Abou Samra]

Le 04/01/2023 à 01:43, Alasdair McAndrew a écrit :
> Many thanks indeed for that heads-up!  But I have another problem, in 
> that I'm typesetting my chords as per the practice of the time, which 
> was to have the stem of the upper note up, and the stem of the lower 
> note(s) down.  I have done this using voices, and a simple function to 
> save typing:
>
> chord =
> #(define-music-function
>      (topnote bottomnote)
>      (ly:music? ly:music?)
>    #{
>     << { $topnote } \\ { $bottomnote } >>
>    #})
>
> (Thanks to people here - including you! - who helped me with this.)  I 
> do have another function:
>
> stRight = \set stringNumberOrientations = #'(right)
>
> which I can place before any string number.  I suppose I could also 
> set a stencil property here too (when I learn how to include two 
> variable assignments in one function).  But it's a pain to have to 
> include this function for every string number.
>
> Of course I could get round a lot of this if I could tweak the chord 
> function so that any chord is typeset as I want.



This should get you started:

\version "2.24.0"

chord =
#(define-music-function
     (topnote bottomnote)
     (ly:music? ly:music?)
   #{
    << { < $topnote > } \\ { < $bottomnote > } >>
   #})

{
  \set Staff.stringNumberOrientations = #'(right)
  \override Staff.StringNumber.stencil = #ly:text-interface::print
  \chord c''\3 c'\4
}


Note that

- The function needs to include chord brackets < ... >, as David pointed 
out.
- You need to set stringNumberOrientations on Staff level, otherwise the 
setting applies to the current Voice, while the << \\ >> construct 
creates new Voices.
- The default StringNumber stencil is computed by 
print-circled-text-callback (see 
https://lilypond.org/doc/v2.24/Documentation/internals/stringnumber), 
which prints the text property of the StringNumber in a circle, but you 
can use ly:text-interface::print, which only prints the text property.

Best,
Jean

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