Re: \tweak Accidental stencil within chord

[Aaron Hill]

On 2019-05-01 11:17 am, dtsmarin wrote:
> This was an example to show what I'm after.
> I need to *change* the stencil (e.g. flat to be sharp ) not the colour 
> etc.
> I know how to change stencil for a single accidental with \override but
> \tweak Accidental.stencil doesn't work.

Hmm... \tweaking a stencil should most definitely work.

Here are two examples affecting specific Accidentals within chords.  The 
first replaces the stencil in question, ignoring the original stencil.  
The second uses grob-transformer to obtain the original value without 
having to know how it was produced.

%%%%
\version "2.19.82"

#(define (foo grob)
  (grob-interpret-markup grob
    (markup #:with-color (x11-color 'purple)
            #:circle #:vcenter #:fontsize 2 #:bold "#")))

baz = #(grob-transformer 'stencil (lambda (grob orig)
  (grob-interpret-markup grob
    (markup #:with-color blue
            #:rotate 15 #:box #:stencil orig))))

\fixed c' {
  <d fis a \tweak Accidental.stencil #foo cis'>4
  <\tweak Accidental.stencil #baz ees g bes d'>4
}
%%%%


-- Aaron Hill

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