Hi Stefan,
as requested, I've prototyped a basic macro that helps with property setting by:
* constraining the property value (for int, float, enum)
* testing for value changes
* pushes undo (untested)
* emitting notification events
* actually setting the constrained value
Usage looks like this:
void
SongImpl::musical_tuning (MusicalTuning tuning)
{
if (!prepared())
{
BseSong *self = as<BseSong*>();
if (APPLY_IDL_PROPERTY (self->musical_tuning, tuning))
{
SfiRing *ring;
for (ring = self->parts; ring; ring = sfi_ring_walk (ring,
self->parts))
bse_part_set_semitone_table ((BsePart*) ring->data,
bse_semitone_table_from_tuning (self->musical_tuning));
}
}
}
You can find the code here:
https://github.com/tim-janik/beast/tree/wip/constrain-properties
Please review the changes the branch introduces and let me know if that
corresponds to the ideas you had about constraining properties.
--
Yours sincerely,
Tim Janik
https://testbit.eu/timj
Free software author.
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