X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fscript-interface.cc;h=c3735343a5408a1cfdbee9ba87890e53ec5df50f;hb=4d852ef65fc654e4ed02413926fc0cb78a1da1be;hp=af2b8f934dbba0e6e4549537c8a3befc5df2ffbd;hpb=eeec992b7029d0982bf4ed0eb3995e9ca99c10e9;p=lilypond.git

diff --git a/lily/script-interface.cc b/lily/script-interface.cc
index af2b8f934d..c3735343a5 100644
--- a/lily/script-interface.cc
+++ b/lily/script-interface.cc
@@ -1,9 +1,20 @@
 /*
-  script-interface.cc -- implement Script_interface
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1999--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1999--2008 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 "script-interface.hh"
@@ -53,12 +64,28 @@ Script_interface::calc_positioning_done (SCM smob)
   return SCM_BOOL_T;
 }
 
+Direction
+Script_interface::get_direction (Grob *me)
+{
+  Direction relative_dir = Direction (1);
+  SCM reldir = me->get_property ("side-relative-direction");
+  if (is_direction (reldir))
+    relative_dir = to_dir (reldir);
+
+  SCM other_elt = me->get_object ("direction-source");
+  Grob *e = unsmob_grob (other_elt);
+  if (e)
+    return (Direction) (relative_dir * get_grob_direction (e));
+
+  return CENTER;
+}
+
 MAKE_SCHEME_CALLBACK (Script_interface, calc_direction, 1);
 SCM
 Script_interface::calc_direction (SCM smob)
 {
   Grob *me = unsmob_grob (smob);
-  Direction d = Side_position_interface::get_direction (me);
+  Direction d = Script_interface::get_direction (me);
 
   if (!d)
     {
@@ -126,11 +153,13 @@ ADD_INTERFACE (Script_interface,
 	       /* properties */
 	       "add-stem-support "
 	       "avoid-slur "
+	       "direction-source "
 	       "positioning-done "
 	       "script-priority "
 	       "script-stencil "
-	       "toward-stem-shift "
+	       "side-relative-direction "
 	       "slur "
 	       "slur-padding "
+	       "toward-stem-shift "
 	       );