Re: Color tweaks (edition engraver)

[David Nalesnik]

On Sat, May 2, 2015 at 3:56 PM, Kieren MacMillan <address@hidden> wrote:

Hi David,

> Aha.  So in the console do you see something like

No…  =)

 (make-music
  'SequentialMusic
  'elements
  (list (make-music
          'NoteEvent
          'pitch
          (ly:make-pitch 1 0)
          'duration
          (ly:make-duration 2))))

That’s it.

:(

Another discovery is making me think that there is just no good way to solve this problem.

Try:

 \colorOverride

{

  \override NoteHead.X-extent = #'(-1 . 1)

  \override NoteHead.font-size = 3

  \override NoteHead.stencil = #ly:note-head::print

  c1

  \revert NoteHead.X-extent

  c1

  \revert NoteHead.font-size

  c1

  \revert NoteHead.stencil

  c1

}

A single revert kills the color, even though two overrides are in effect.

Conversely. using \markAllAlteredGrobs (in color-tweaks2.y above, not to be confused with colorTweaks2.ly), only the last \revert removes the color, which is as it should be.

Try:

{

  \override NoteHead.X-extent = #'(-1 . 1)

  \override NoteHead.font-size = 3

  \override NoteHead.stencil = #ly:note-head::print

  c1

  \revert NoteHead.X-extent

  c1

  \revert NoteHead.font-size

  c1

  \revert NoteHead.stencil

  c1

}

\layout {

  \context {

    \Score

    \markAllAlteredGrobs

  }

}

I just don't think there is any way to do this perfectly.

Maybe I'll try an engraver, since it looks like we need live grobs (the \markAllAlteredGrobs approach)

DN