On 10/28/09 12:33 PM, "Kieren MacMillan" <[email protected]>
wrote:
> Hi all,
>
> Can the snippet
>
> <http://lsr.dsi.unimi.it/LSR/Snippet?id=554>
>
> be made into an automatic callback, instead of requiring the creation
> of a markup each time? i.e., I would love to be able to say something
> like
>
> \useNoteDenominators
>
> or
>
> \override TimeSignature #'denominator-style = #'note
>
> and have all denominators be output as notes (rather than numbers).
Yes, it can. Right now the only thing stopping from being automatic is
the hardcoded 3 and 2 in tsMarkup.
These could be replaced by the car and cdr of timeSignatureFraction.
In scm/auto-beam.scm there is code that gets the timeSignatureFraction,
which you can use as an example.
The challenge is that you need to have a context in order to return (as
opposed to setting) the timeSignatureFraction, so you'd need to make a music
function that returned context-spec-music in order to get the context --
that's somewhat tricky. You can see how I've managed it (perhaps
inexpertly) by searching ly/music-functions-init.ly for
timeSignatureFraction.
Time signatures are currently created by the code in lily/time-signature.cc
Code could be added to create a note type time-signature. On the other
hand, a comment in this routine says it should be junked because time
signatures can all be done in markups (i.e. in Scheme, which gives more
flexibility).
a new style could be added (either to the c++ or to a new scheme file that
implements all of the current time signatures) -- note-denominator
Then you'd do
\override TimeSignature #'style=#'note-denominator.
HTH,
Carl
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