Re: I want ledger lines in middle of staff, or dashed staff lines

[Mats Bengtsson]

I don't see any need for a separate class. It should be enough to add a
property setting that allows for ledger lines within the extent of the 
stave.
I hope you use the
\override Staff.StaffSymbol #'line-positions = ...
feature (see http://lilypond.org/doc/v2.8/Documentation/topdocs/NEWS) to
create the staves. In that case, an even better solution to your problem is
to just check that property in Ledger_line_spanner::brew_ledger_lines(...)
and only remove ledger lines if there is no corresponding staff line.

  /Mats


Kevin Dalley wrote:
> Thanks.
>
> I'm starting to go with some C++ hacking.  I can get the extra ledger
> lines as long as I don't need them, when the note is outside of the
> staff and normal ledger lines are created, as you mentioned.  I
> haven't yet lied to LilyPond about whether the note is outside the
> staff, but I'll think about it.
>
> Is it worth adding a s separate ledger class for these ledgers,
> perhaps subclassing from the current class?  That way normal staffs
> don't need to worry about the code, only odd ones.  Though I added an
> engraver for the chromatic staff, I'm not sure it is *really* an
> engraver, it just changes the position of the notes.  It does work,
> however.
>
> I'm having trouble figuring out how to add a ledger style class.
> Perhaps I'll just add it to my staff and see what happens.
>
> Mats Bengtsson <address@hidden> writes:
>
>   
> > As far as I can see from the implementation, the ledger lines are only
> > typeset if the note pitch is outside the staff, so some C++ hacking would
> > be needed to get a clean solution for you. It should be possible to fool
> > LilyPond, though, by typesetting the note heads one octave too high
> > (for example) so they get ledger lines, and then move everything back to
> > the desired position using extra-offset for all involved layout objects.
> >     
>
>
>
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>   

--
=============================================
        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
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