X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Froute_group_member.cc;h=9ca94bfb2bc4851383e6269a43ff82bd70f5d1bd;hb=1ec78d26ee7cd5a612a7f98f9977dbb8ef46a593;hp=3caa7cd1d0e8fc1db39639769ae4ddc8d4506e46;hpb=8c9749e42faf7808034ed8b7afce4a2fe6dc6f33;p=ardour.git

diff --git a/libs/ardour/route_group_member.cc b/libs/ardour/route_group_member.cc
index 3caa7cd1d0..9ca94bfb2b 100644
--- a/libs/ardour/route_group_member.cc
+++ b/libs/ardour/route_group_member.cc
@@ -18,6 +18,7 @@
 
 #include "ardour/libardour_visibility.h"
 #include "ardour/route_group_member.h"
+#include "ardour/route_group.h"
 
 using namespace ARDOUR;
 
@@ -34,3 +35,14 @@ RouteGroupMember::set_route_group (RouteGroup *rg)
 	_route_group = rg;
 	route_group_changed (); /* EMIT SIGNAL */
 }
+
+bool
+RouteGroupMember::use_group (PBD::Controllable::GroupControlDisposition gcd, bool (RouteGroup::*predicate)(void) const) const
+{
+	bool active_for_predicate = _route_group && (_route_group->*predicate)() && _route_group->is_active();
+
+	return (gcd != PBD::Controllable::NoGroup) &&
+		_route_group && 
+		((active_for_predicate && (gcd != PBD::Controllable::InverseGroup)) ||
+		 (!active_for_predicate && (gcd == PBD::Controllable::InverseGroup)));
+}