use notification of what was changed in MidiRegion::post_set() call

git-svn-id: svn://localhost/ardour2/branches/3.0@8307 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 8 insertions, 0 deletions

diff --git a/libs/ardour/midi_region.cc b/libs/ardour/midi_region.cc
index e487cae2f5..02d9f7d398 100644
--- a/libs/ardour/midi_region.cc
+++ b/libs/ardour/midi_region.cc
@@ -124,6 +124,14 @@ MidiRegion::clone ()
 }
 
 void
+MidiRegion::post_set (const PropertyChange& pc)
+{
+        if (pc.contains (Properties::length) || pc.contains (Properties::position)) {
+                update_length_beats ();
+        }
+}
+
+void
 MidiRegion::set_length_internal (framecnt_t len)
 {
         Region::set_length_internal (len);