Fix T46163: NLA properties with drivers aren't displayed as having drivers

While such drivers will generally get evaluated too late to be of much
use during animations, it can still be useful to allow using drivers to
control a whole bunch of NLA strip properties (i.e. syncing NLA strip
timings via a single property/control).

Keyframe insertion however is still not allowed on these properties
(and an error message will now be displayed when trying to do so,
instead of silently failing), as it is useless.

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_nla.h b/source/blender/blenkernel/BKE_nla.h
index 3bf8bba47f5..8d9fc8ff6cf 100644
--- a/source/blender/blenkernel/BKE_nla.h
+++ b/source/blender/blenkernel/BKE_nla.h
@@ -40,6 +40,9 @@ struct bAction;
 struct Scene;
 struct Speaker;
 
+struct PointerRNA;
+struct PropertyRNA;
+
 /* ----------------------------- */
 /* Data Management */
 
@@ -103,6 +106,8 @@ bool BKE_nlatrack_has_animated_strips(struct NlaTrack *nlt);
 bool BKE_nlatracks_have_animated_strips(ListBase *tracks);
 void BKE_nlastrip_validate_fcurves(struct NlaStrip *strip);
 
+bool BKE_nlastrip_has_curves_for_property(const struct PointerRNA *ptr, const struct PropertyRNA *prop);
+
 void BKE_nla_validate_state(struct AnimData *adt);
 
 /* ............ */