Re: White on black

[Simon Albrecht]

Hi Christ, hi Harm,

here’s what I have now, combining both your examples, as a small file 
for tinkering. As it stands, both top level markup and score are printed 
white, as is the tagline, but neither of the score headers.

Best, Simon

On 30.12.24 16:54, Thomas Morley wrote:
> Am Sa., 28. Dez. 2024 um 19:01 Uhr schrieb Christ van Willegen
> <cvwillegen@gmail.com>:
> > Hello Simon,
> >
> > On Sat, Dec 28, 2024 at 3:25 PM Simon Albrecht <simon.albrecht@mail.de> wrote:
> > > I would like to obtain LilyPond output with black and white inverted
> > > (black background, white music and text) for on-screen use and
> > > projections. Does someone know how to achieve that through LilyPond
> > > code, or has it been done before? Should absolutely be an LSR snippet IMO.
> >
> > I, too, had this problem. Someone on the list helped me, but I can't find their 
> > name right now :-(
> >
> > Does the attached sample fit your purpose? It's best to split off (part of) 
> > this file into an color.ily file that you can include 'everywhere' you need it, 
> > so that you can avoid repetition of the color function.
> >
> > Please note that I tried my best to find all the relevant grob names, but I 
> > might have missed some :-(
> >
> > Regards,
> >
> > Christ van Willegen
> To color entire pages it's probably easiest to do:
>
> \paper {
>    page-color = #red
>
>    #(define (page-post-process layout pages)
>      (let ((color (ly:output-def-lookup $defaultpaper 'page-color #f)))
>        (when (color? color)
>          (for-each
>            (lambda (page)
>              (set! (ly:prob-property page 'stencil)
>                    (stencil-with-color (ly:prob-property page 'stencil) color)))
>            pages))))
>
> }
>
> Cheers,
>    Harm

test-whiteonblack-harm.ly
Description: Text Data

test-whiteonblack-harm.pdf
Description: Adobe PDF document