Customizing fretboard fret diagrams

Fret diagram properties can be modified by setting the fret-diagram-details property. For FretBoard fret diagrams, overrides are applied to the FretBoards.FretBoard object. Like Voice, FretBoards is a bottom-level context, and therefore can be omitted in property overrides.

\version "2.24"

\include "predefined-guitar-fretboards.ly"

\storePredefinedDiagram #default-fret-table \chordmode { c' }
                        #guitar-tuning
                        "x;1-1-(;3-2;3-3;3-4;1-1-);"

% shorthand
oo = #(define-music-function
       (grob-path value)
       (list? scheme?)
       #{ \once \override $grob-path = #value #})

<<
  \new ChordNames {
    \chordmode { c1 | c | c | d }
  }
  \new FretBoards {
    % Set global properties of fret diagram
    \override FretBoards.FretBoard.size = 1.2
    \override FretBoard.fret-diagram-details.finger-code = #'in-dot
    \override FretBoard.fret-diagram-details.dot-color = #'white
    \chordmode {
      c
      \oo FretBoard.size #1.0
      \oo FretBoard.fret-diagram-details.barre-type #'straight
      \oo FretBoard.fret-diagram-details.dot-color #'black
      \oo FretBoard.fret-diagram-details.finger-code #'below-string
      c'
      \oo FretBoard.fret-diagram-details.barre-type #'none
      \oo FretBoard.fret-diagram-details.number-type #'arabic
      \oo FretBoard.fret-diagram-details.orientation #'landscape
      \oo FretBoard.fret-diagram-details.mute-string "M"
      \oo FretBoard.fret-diagram-details.label-dir #LEFT
      \oo FretBoard.fret-diagram-details.dot-color #'black
      c'
      \oo FretBoard.fret-diagram-details.finger-code #'below-string
      \oo FretBoard.fret-diagram-details.dot-radius #0.35
      \oo FretBoard.fret-diagram-details.dot-position #0.5
      \oo FretBoard.fret-diagram-details.fret-count #3
      d
    }
  }
  \new Voice {
    c'1 | c' | c' | d'
  }
>>