Re: Box around system

[Rip _Mus]

Hello Valentin,

thanks a lot!

This approach is also very useful and sophisticated!

I will have to decide, sooner or later, to deepen the Scheme side.

Best regards

Il giorno dom 15 mag 2022 alle ore 21:08 Valentin Petzel <valentin@petzel.at> ha scritto:

Hello Jean, hello Rip.

instead of imposing this empty stencil I’d extent the original command such
that it allows for such things. The appended file does implement a way to call
(box-grob-stencil-with-thickness thickness padding) and a way to use the
original function but to be able to specify thickness and padding using
details.box-thickness and details.box-padding.

Cheers,
Valentin


Am Sonntag, 15. Mai 2022, 11:09:29 CEST schrieb Jean Abou Samra:
> Le 15/05/2022 à 10:40, Rip _Mus a écrit :
> > Good morning,
> > I found this interesting snippet:
> > https://lsr.di.unimi.it/LSR/Snippet?id=257
> >
> > that draws a box around systems.
> > According to you, is it possible to specify box line thickness ?
> >
> > Thank you!
> >
> > Rip_mus
>
> It looks like box-grob-stencil does not support this. make-stencil-boxer, on
> the other hand, does. It expects a callback yielding a stencil, though, so
> you need to define a little function returning a stencil empty of inking
> with the grob's extent.
>
> \version "2.22.2"
>
> #(define (empty-stencil-from-grob-extents grob)
>     (ly:make-stencil
>      '()
>      (ly:grob-extent grob grob X)
>      (ly:grob-extent grob grob Y)))
>
> \layout {
>    \context {
>      \Score
>      \override System.stencil =
>        % adjust thickness and padding
>        #(make-stencil-boxer 0.2 0.3 empty-stencil-from-grob-extents)
>    }
> }
>
> {
>    \slurDown c4 ( g4  c''4)
> }
>
>
> Best,
> Jean