Re: flip clef at end of line only

[Malte Meyn]

Am 15.04.2017 um 17:32 schrieb Marc Hohl:
> Hi list,
> 
> I am working on a little piece that's played as written;
> after that, the musician has to turn the page upside down and play the
> resulting notes.
> 
> I managed to get the clef displayed at the beginning and the end of each
> line, and I can flip the clef ;-)
> 
> Unfortunately, overriding the Clef.stencil at the end of the line
> changes the apperance for the clef in the next line, too.

You need before-line-breaking here so you can use the function
ly:item-break-dir:


    \override Clef.before-line-breaking =
    #(lambda (grob)
       (if (equal? (ly:item-break-dir grob) LEFT)
           (ly:grob-set-property! grob 'stencil
             (lambda (grobb)
               (grob-interpret-markup grobb
                 #{ \markup \translate #'(0 . 2) \flip \musicglyph
#"clefs.G" #})))))

I added the translate in the markup to bring the clef to the correct
vertical position.