Re: Text spanner with centred text state of the art

[Urs Liska]

Here is the code I settled with in my project. I assume that some of it
is inferior to the code now in LilyPond, but I also think it provides
functionality not covered by the MeasureAttachedSpanner.

1)
https://github.com/ism-dme/lm-vs/blob/import-1756/examples/library/toolbox/brackets.ily

This provides brackets with and without text, centered over one or
multiple measures. It can also center text over multiple measures. I
suspect all of this can be achieved with the now-included spanner.

2)
https://github.com/ism-dme/lm-vs/blob/import-1756/examples/library/toolbox/center.ily

This provides a function to center arbitrary "music" in a measure, e.g.
notes, clefs or time signatures in a measure by replacing a
MultiMeasureRest with a score markup (stripped of most of the score
...). Currently it is hardcoded to enter a R1, but this could be easily
replaced by either a given duration or by determining the length of
some reference expression.

Optionally that centered stuff can be "annotated" by centered text
above and below the staff. To some extent it can also ensure such text
fits in the measure by setting the MMR's minimum-length property.

Best
Urs

PS:
The folder is an example of a "toolbox" that can be used with the
openLilyLib function
  \loadTool brackets
which would also accept options, and which I implemented for that
project.

Am Sonntag, den 12.07.2020, 11:35 +0200 schrieb Urs Liska:
> And now with attachments.
> 
> It shows three main items:
> 
>  * markup centered above one or multiple measures
>  * horizontal brackets aligned to (multiple) measures
>  * markup centered within a measure
> 
> BTW: My recollection of David Nalesnik continuing with the effort
> turned up these links:
> 
> https://lists.gnu.org/archive/html/lilypond-devel/2019-11/msg00107.html
> https://codereview.appspot.com/571180043/
> https://lists.gnu.org/archive/html/lilypond-devel/2019-11/msg00092.html
> 
> However, I'm not sure (and don't right now have the time to search
> for)
> whether this ended up in LilyPond itself.
> 
> Maybe this request has been mooted last November? ;-)
> 
> BestUrs
> 
> Am Sonntag, den 12.07.2020, 11:22 +0200 schrieb Urs Liska:
> > Am Sonntag, den 12.07.2020, 11:03 +0200 schrieb Urs Liska:
> > > Am 12. Juli 2020 10:04:08 MESZ schrieb Andrew Bernard <
> > > andrew.bernard@gmail.com>:
> > > > I'll rephrase that more precisely. The function I have is no
> > > > longer
> > > > working. 
> > > 
> > > And I'll rephrase that I *think* I have working code, which yi'll
> > > look up and zry ASAP.
> > > 
> > 
> > OK, first test shows the code still works with 2.20 and produces
> > among
> > others the attached results.
> > 
> > I'll dig into the code and provide some links. It will probably not
> > be
> > immediately usable because it is tied to the project setup and
> > depends
> > on openLilyLib functionality to some extent.
> > 
> > But it would be good to find something we can massage to being
> > integratable into LilyPond.
> > Urs
> > 
> > > Urs
> > > 
> > > 
> > > > It's not suitable for inclusion.  I am wondering if anybody
> > > > has something good, or indeed if lilypond 2.21 supports such a
> > > > technique (I was unable to see that).
> > > > 
> > > > Andrew