Le samedi 13 mai 2023 à 17:30 -0600, Jeff Olson a écrit :
> Jean,
>
> I tried adapting your circleB with a fill to do something like staffHighlight
> but with a more focused spotlight effect, especially for notes outside the
> staff on ledger lines where staffHighlight ordinarily doesn't go. Here's
> my adaptation (with the original stencil last, so the note itself is not
> obliterated by the fill):
>
>
> \version "2.24.1"
> circleB =
> \once \override NoteHead.stencil =
> #(grob-transformer
> 'stencil
> (lambda (grob original)
> (grob-interpret-markup
> grob
> #{
> \markup \with-outline \stencil #original
> \overlay {
> \align-on-other #X
> #CENTER \stencil #original
> #CENTER \with-color "#fcc" \draw-circle #3.5 #0.1 ##t
> \stencil #original
> }
> #})))
>
> { \circleB e a d' \circleB g' b' e'' }
>
>
>
>
> But filling the circle obscures the staff and ledger lines (unlike the
> staffHighlight effect) making the circled note ambiguous (see first staff in
> image below).
>
>
> The only workaround I know is to do an overlay of the whole score with its
> un-decorated self, like this (second staff in image below).
>
>
> \markup { \overlay {
> \score { \new Voice { \circleB e a d' \circleB g' b' e'' } }
> \score { \new Voice { e a d' g' b' e'' } }
> } }
>
>
>
>
> Here's the image of the two results. The circle highlight obliterates the
> ledger and staff lines:
>
> I see the circle also has no extent so it gets clipped in the png. That I
> can workaround.
>
>
> But how can I get the circle placed behind the staff (as in the second
> result) without doing an unwieldy overlay of the whole score?
The basic setting to play with is the layer:
```
\version "2.24.1"
circleB = {
\once \override NoteHead.stencil =
#(grob-transformer
'stencil
(lambda (grob original)
(grob-interpret-markup
grob
#{
\markup \with-outline \stencil #original
\overlay {
\align-on-other #X
#CENTER \stencil #original
#CENTER \with-color "#fcc" \draw-circle #3.5 #0.1 ##t
\stencil #original
}
#})))
\override NoteHead.layer = -1
}
{ \circleB e a d' \circleB g' b' e'' }
```
But you can't set the layer differently for the colored circle and the note
head itself if they are part of the same grob, leading to the circle of a note
head stomping on another note head as you can see above. You would have to use
another grob, e.g.,
```
\version "2.24.1"
circleB = {
\balloonGrobText NoteHead #'(0 . 0)
\markup \with-color "#fcc" \draw-circle #3.5 #0.1 ##t
\once \override BalloonText.annotation-balloon = ##f
\once \override BalloonText.layer = -1
}
\new Voice \with {
\consists Balloon_engraver
}
{ \circleB e a d' \circleB g' b' e'' }
```
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