I want large note names with EasyHeadsOn for teaching.
I did the following hacks:
1. commented out the explicit setting of "NoteHead #'font-size" in EasyHeadsOn
so I could increase the font size.
2. changed the constant dividend in Brew-ez-stencil:
(radius (/ (+ staff-space line-thickness) 1.5))
to make the circle larger.
However, I have to constantly play with the dividend as I change staff-spacing.
What I really want to do but don't know how, is to write something like:
(radius is 1/2 the height of character "G" in the font for NoteHead)
Or something equivalent.
Personally, I think EasyHeadsOn should work this way and not be keyed to the
staff-spacing.
==========================================================================
EasyHeadsOn = {
\override NoteHead #'stencil = #note-head::Brew-ez-stencil
% \override NoteHead #'font-size = #-8
\override NoteHead #'font-size = #-1
\override NoteHead #'font-family = #'sans
\override NoteHead #'font-series = #'bold
}
#(define-public (note-head::Brew-ez-stencil grob)
(let* ((log (ly:grob-property grob 'duration-log))
(pitch (ly:event-property (event-cause grob) 'pitch))
(pitch-index (ly:pitch-notename pitch))
(note-names (ly:grob-property grob 'note-names))
(pitch-string (if (and (vector? note-names)
(> (vector-length note-names) pitch-index))
(vector-ref note-names pitch-index)
(string
(integer->char
(+ (modulo (+ pitch-index 2) 7)
(char->integer #\A))))))
(staff-space (ly:staff-symbol-staff-space grob))
(line-thickness (ly:staff-symbol-line-thickness grob))
(stem (ly:grob-object grob 'stem))
(stem-thickness (* (if (ly:grob? stem)
(ly:grob-property stem 'thickness)
1.3)
line-thickness))
(radius (/ (+ staff-space line-thickness) 1.5))
(letter (markup #:center-align #:vcenter pitch-string))
(filled-circle (markup #:draw-circle radius 0 #t)))
(ly:stencil-translate-axis
(grob-interpret-markup
grob
(if (>= log 2)
(make-combine-markup
filled-circle
(make-with-color-markup white letter))
(make-combine-markup
(make-combine-markup
filled-circle
(make-with-color-markup white (make-draw-circle-markup
(- radius stem-thickness) 0 #t)))
letter)))
radius X)))
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