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+
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+
+    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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _RG_LINEDSTAFFMANAGER_H_
+#define _RG_LINEDSTAFFMANAGER_H_
+
+
+
+
+
+namespace Rosegarden
+{
+
+class LinedStaff;
+
+
+/**
+ * LinedStaffManager is a trivial abstract base for classes that own
+ * and position sets of LinedStaffs, as a convenient API to permit
+ * clients (such as canvas implementations) to discover which staff
+ * lies where.
+ * 
+ * LinedStaffManager is not used by LinedStaff.
+ */
+
+class LinedStaff;
+
+class LinedStaffManager
+{
+public:
+    virtual ~LinedStaffManager() {}
+    virtual LinedStaff *getStaffForCanvasCoords(int x, int y) const = 0;
+};
+
+
+
+}
+
+#endif