Re: Problem coloring Ambitus ledger-lines

[Cynthia Karl]

Sat, 9 Jul 2016 16:51:25 +0200 Thomas Morley <address@hidden>:

> Subject: Re: Problem coloring Ambitus ledger-lines
> 
> 2016-07-09 16:22 GMT+02:00 Patrick Karl <address@hidden>:
>> The following MWE:
>> 
>> \version "2.19.38"
>> 
>> music =  { c'4 c''' r2 }
>> 
>> \score {
>>   \new Staff \music
>>   \layout {
>>      \context { \Staff \consists "Ambitus_engraver"
>>          \with { \override AmbitusNoteHead.color = #red
>>                     \override AmbitusLine.color = #red
>> %                     \override LedgerLineSpanner.color = #red
>>          }
>>      }
>>   }
>> }
>> 
>> seems to illustrate a problem with Ambitus, namely, there doesn't seem to be
>> a way to change the color of ledger lines within the Ambitus.  The output of
>> the above snippet is attached; it shows the Ambitus ledger lines as black.
>> Uncommenting the "\override LedgerLineSpanner.color = #red" statement
>> changes the color of not only the ledger lines within the score, but also
>> within the Ambitus.
>> 
>> It looks like there should be a grob, AmbitusLedgerLineSpanner, independent
>> from LedgerLineSpanner.
> 
> We have the start/stopStaff-functionality to insert changes for p.e.
> StaffSymbol and LedgerLineSpanner,.
> 
>> Or am I overlooking something?
> 
> How about:
> 
> music =  {
> \once \override Staff.LedgerLineSpanner.color = #red
> \grace s128
> \stopStaff
> \startStaff
> c'4 c''' r2
> }

Well, that seems awfully hackish.  The first problem is that it triggers the 
notorious and perpetual problem with coordinating staves that begin with a 
grace note.  And in my actual scores as opposed to my MWE I’m running into 
problems that seem related and that I don’t yet understand how to fix.  For 
example, I have one staff that is using cueDuringWithClef initially, and the 
cued clef is engraved at the very beginning of the staff, i.e., before the 
actual clef, key and time signatures.

I guess that for the time being I’ll either not color the Ambitus at all (my 
actual color is grey in order to make the ambitus a little less obtrusive), or 
just live with a few bold ledger lines.

I’m guessing from all this that the Ambitus is actually part of the 
StaffSymbol. Is that right?

Thanks for your input.
Patrick Karl


> 
> \score {
>   \new Staff \music
>   \layout {
>      \context {
>        \Staff
>        \consists "Ambitus_engraver"
>        \override AmbitusNoteHead.color = #red
>        \override AmbitusLine.color = #red
>      }
>   }
> }
> 
> Cheers.
> Harm