As part of the GSoC, Ruchit (shredpub) is implementing support for score
annotations, with me as mentor.  For annotations that attach to a single
element - like text or a shape - the implementation seems straightforward. 
But one type of annotation probably deserves some discussion, and that is
the range-based annotation - basically allowing you to highlight a passage
across one or more staves.  It's essentially a spanner, but not one that
requires the user to be able to edit the individual segments, so we are
hoping to come up with a relatively low weight implementation.  It would
basically be a rectangle much like the selection rectangle, but with
possibility of defining background color etc.

I knew a reasonable amount about the implementation of spanners for 2.0, but
nothing about the changes made or planned for 3.0.  I'm trying to understand
whether it will make sense to implement these annotations as actual
spanners, or whetehr we could potentially come up with an even more
simplified implementation.  I guess the same issue probably exists for the
LyricsLine, which currently are "unmanaged spanners" that do dervie from
Spanner but don't have quite the same persistence as other spanners.  My
understanding is this might go away for 3.0, but I'm not sure if there is a
plan for what might replace it, and if there is, if it is something we could
use for range annotations.

Any thoughts anyone would like to share about this?

Marc



--
View this message in context: 
http://dev-list.musescore.org/Range-based-annotation-implementation-tp7579950.html
Sent from the MuseScore Developer mailing list archive at Nabble.com.

------------------------------------------------------------------------------
Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San
Francisco, CA to explore cutting-edge tech and listen to tech luminaries
present their vision of the future. This family event has something for
everyone, including kids. Get more information and register today.
http://sdm.link/attshape
_______________________________________________
Mscore-developer mailing list
Mscore-developer@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mscore-developer

Reply via email to