X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstaff-symbol.cc;fp=lily%2Fstaff-symbol.cc;h=d1629dfb243fbe26d88323a052a9b9aeffd1ce3d;hb=e90f0536f9be39ada0bef0aeb0d275dec3b2fb5b;hp=0f1d60aa626475db0ea2d4307ab9d6299722fbd0;hpb=a8c9e8a7ca320ab0df5fd32e717fd62cd7635ce6;p=lilypond.git

diff --git a/lily/staff-symbol.cc b/lily/staff-symbol.cc
index 0f1d60aa62..d1629dfb24 100644
--- a/lily/staff-symbol.cc
+++ b/lily/staff-symbol.cc
@@ -1,9 +1,20 @@
 /*
-  staff-symbol.cc -- implement Staff_symbol
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  LilyPond 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 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond 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 LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "staff-symbol.hh"
@@ -197,6 +208,24 @@ Staff_symbol::on_line (Grob *me, int pos)
     return ((abs (pos + line_count (me)) % 2) == 1);
 }
 
+Interval
+Staff_symbol::line_span (Grob *me)
+{
+  SCM line_positions = me->get_property ("line-positions");
+  Interval iv;
+
+  if (scm_is_pair (line_positions))
+    for (SCM s = line_positions; scm_is_pair (s); s = scm_cdr (s))
+      iv.add_point (scm_to_double (scm_car (s)));
+  else
+    {
+      int count = line_count (me);
+      return Interval (-count + 1, count - 1);
+    }
+
+  return iv;
+}
+
 ADD_INTERFACE (Staff_symbol,
 	       "This spanner draws the lines of a staff.  A staff symbol"
 	       " defines a vertical unit, the @emph{staff space}.  Quantities"