logic to copy audio region fade in/fade out into compound regions (one-way for now)

git-svn-id: svn://localhost/ardour2/branches/3.0@9588 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 64 insertions, 0 deletions

diff --git a/libs/ardour/ardour/region_sorters.h b/libs/ardour/ardour/region_sorters.h
new file mode 100644
index 0000000000..ca09f194b1
--- /dev/null
+++ b/libs/ardour/ardour/region_sorters.h
@@ -0,0 +1,64 @@
+/*
+    Copyright (C) 2000-2011 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __libardour_region_sorters_h__
+#define __libardour_region_sorters_h__
+
+#include "ardour/region.h"
+
+namespace ARDOUR {
+
+struct RegionSortByPosition {
+    bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
+	    return a->position() < b->position();
+    }
+};
+
+struct RegionSortByLastLayerOp {
+    bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
+	    return a->last_layer_op() < b->last_layer_op();
+    }
+};
+
+struct RegionSortByLayer {
+    bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
+	    return a->layer() < b->layer();
+    }
+};
+
+struct RegionSortByLayerWithPending {
+	bool operator () (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
+
+		double p = a->layer ();
+		if (a->pending_explicit_relayer()) {
+			p += 0.5;
+		}
+
+		double q = b->layer ();
+		if (b->pending_explicit_relayer()) {
+			q += 0.5;
+		}
+
+		return p < q;
+	}
+};
+
+} // namespace 
+
+#endif /* __libardour_region_sorters_h__ */