Re: Add tab-tie-follow-engraver (issue2723043)

[Marc Hohl]

Am 13.11.2010 15:29, schrieb Carl Sorensen:
> On 11/13/10 3:18 AM, "Marc Hohl"<address@hidden>  wrote:
>
>    
> > Am 13.11.2010 06:21, schrieb address@hidden:
> >      
>    
> > > I can think of no way to simplify this code further.  If you have any
> > > ideas I'd be happy to hear them.
> > >        
> > There was the idea to include this into the Tab_note_heads_engraver, and
> > if it were
> > possible to include the parenthesize stuff into that engraver as well,
> > it would
> >
> > a) simplify the callbacks
> > b) solve the problem about the harmonic brackets
> >
> > Is it possible to detect the tie/slur/glissando cases within the
> > engraver and call a
> > routine to parenthesize the fret number? Then the resulting grob is a
> > compound object that
> > gets its angle brackets displayed correctly without fiddling with
> > padding and stuff.
> >      
> It may be possible to include the tie/slur/glissando in the
> tab_note_heads_engraver, but I haven't yet been able to get it to work
> properly.
>
> However, we can't do the whole display-cautionary thing in the engraver,
> because the engraver doesn't know about such things as split ties.  That has
> to be dealt with in the tab note head callback.
>    
Yes, I know, because the line breaking happens at a time when
the engravers have already done their job, IIUC.
> The problem with the harmonic brackets is orthogonal to this problem.  I
> started work on it, but I have to sort out the various parenthesize
> functions before I know how to fully deal with it.  It's on my list, but I
> want to get this one resolved first.
>    
Yes, of course.
I am not sure whether it is possible at all to include all the stuff 
into the
tab note head engraver, but I think it would be more homogenic to handle
the tab note head appearance by engravers as far as possible without
callback patchwork.

Marc

> Thanks,
>
> Carl
>
>
>