X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Fregion_sorters.h;h=3afd66bf3ca9613ef61a639d120e9c0e2fb411b4;hb=0b471df0c3883bb04103f006192652e6d6eb6807;hp=9fd739a4da725c66588f82e64da0602f4cb239ab;hpb=b9185d2c07c77eccf3679ac99f6b69f8fdd79c48;p=ardour.git

diff --git a/libs/ardour/ardour/region_sorters.h b/libs/ardour/ardour/region_sorters.h
index 9fd739a4da..3afd66bf3c 100644
--- a/libs/ardour/ardour/region_sorters.h
+++ b/libs/ardour/ardour/region_sorters.h
@@ -36,6 +36,19 @@ struct LIBARDOUR_API RegionSortByLayer {
 	}
 };
 
+/* sort by RegionSortByLayerAndPosition()
+ * is equivalent to
+ * stable_sort by RegionSortByPosition();
+ * stable_sort by RegionSortByLayer();
+ */
+struct LIBARDOUR_API RegionSortByLayerAndPosition {
+	bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
+		return
+			   (a->layer() < b->layer()  && a->position() < b->position())
+			|| (a->layer() == b->layer() && a->position() < b->position());
+	}
+};
+
 } // namespace
 
 #endif /* __libardour_region_sorters_h__ */