Move StripableSorter into libardour

1 files changed, 61 insertions, 3 deletions

diff --git a/libs/ardour/ardour/stripable.h b/libs/ardour/ardour/stripable.h
index b657ac6161..5f71c6ae5f 100644
--- a/libs/ardour/ardour/stripable.h
+++ b/libs/ardour/ardour/stripable.h
@@ -87,9 +87,67 @@ class LIBARDOUR_API Stripable : public SessionObject,
 
 	void  set_presentation_order (PresentationInfo::order_t);
 
-	struct PresentationOrderSorter {
-		bool operator() (boost::shared_ptr<Stripable> a, boost::shared_ptr<Stripable> b) {
-			return a->presentation_info().order() < b->presentation_info().order();
+	struct Sorter
+	{
+		bool _mixer_order; // master is last
+		Sorter (bool mixer_order = false) : _mixer_order (mixer_order) {}
+
+		bool operator() (boost::shared_ptr<ARDOUR::Stripable> a, boost::shared_ptr<ARDOUR::Stripable> b)
+		{
+			if (a->presentation_info().flags () == b->presentation_info().flags ()) {
+				return a->presentation_info().order() < b->presentation_info().order();
+			}
+
+			int cmp_a = 0;
+			int cmp_b = 0;
+
+			if (a->is_auditioner ()) { cmp_a = -2; }
+			if (b->is_auditioner ()) { cmp_b = -2; }
+			if (a->is_monitor ())    { cmp_a = -1; }
+			if (b->is_monitor ())    { cmp_b = -1; }
+
+			/* ARDOUR-Editor: [Track|Bus|Master] (0) < VCA (3)
+			 * ARDOUR-Mixer : [Track|Bus] (0) < VCA (3) < Master (4)
+			 *
+			 * Mixbus-Editor: [Track|Bus] (0) < Mixbus (1) < VCA (3) < Master (4)
+			 * Mixbus-Mixer : [Track|Bus] (0) < Mixbus (1) < Master (2) < VCA (3)
+			 */
+
+			if (a->presentation_info().flags () & ARDOUR::PresentationInfo::VCA) {
+				cmp_a = 3;
+			}
+#ifdef MIXBUS
+			else if (a->presentation_info().flags () & ARDOUR::PresentationInfo::MasterOut) {
+				cmp_a = _mixer_order ? 2 : 4;
+			}
+			else if ((a->presentation_info().flags () & ARDOUR::PresentationInfo::Mixbus) || a->mixbus()) {
+				cmp_a = 1;
+			}
+#endif
+			else if (_mixer_order && (a->presentation_info().flags () & ARDOUR::PresentationInfo::MasterOut)) {
+				cmp_a = 4;
+			}
+
+
+			if (b->presentation_info().flags () & ARDOUR::PresentationInfo::VCA) {
+				cmp_b = 3;
+			}
+#ifdef MIXBUS
+			else if (b->presentation_info().flags () & ARDOUR::PresentationInfo::MasterOut) {
+				cmp_b = _mixer_order ? 2 : 4;
+			}
+			else if ((b->presentation_info().flags () & ARDOUR::PresentationInfo::Mixbus) || b->mixbus()) {
+				cmp_b = 1;
+			}
+#endif
+			else if (_mixer_order && (b->presentation_info().flags () & ARDOUR::PresentationInfo::MasterOut)) {
+				cmp_b = 4;
+			}
+
+			if (cmp_a == cmp_b) {
+				return a->presentation_info().order() < b->presentation_info().order();
+			}
+			return cmp_a < cmp_b;
 		}
 	};