Imported Upstream version 2.14.2

[lilypond.git] / lily / pitched-trill-engraver.cc

diff --git a/lily/pitched-trill-engraver.cc b/lily/pitched-trill-engraver.cc
index daa3bee42c772b37f6e4e53f90fbd3e4e42b68a6..6960d3e2dd1883d390daff87f982aefa7483da2f 100644 (file)
--- a/lily/pitched-trill-engraver.cc
+++ b/lily/pitched-trill-engraver.cc
@@ -1,9 +1,20 @@
 /*
-  pitched-trill-engraver.cc -- implement Pitched_trill_engraver
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 2005--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 2005--2007 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 "engraver.hh"
@@ -80,9 +91,22 @@ Pitched_trill_engraver::make_trill (Stream_event *ev)
   SCM key = scm_cons (scm_from_int (p->get_octave ()),
                      scm_from_int (p->get_notename ()));
 
+  int bn = measure_number (context());
+
   SCM handle = scm_assoc (key, keysig);
+  if (handle != SCM_BOOL_F)
+    {
+      bool same_bar = (bn == robust_scm2int (scm_caddr (handle), 0));
+      bool same_alt
+       = (p->get_alteration () == robust_scm2rational (scm_cadr (handle), 0));
+
+      if (!same_bar || (same_bar && !same_alt))
+       handle = SCM_BOOL_F;
+    }
+
   bool print_acc
-    = (handle == SCM_BOOL_F) || p->get_alteration () == Rational (0);
+    = (handle == SCM_BOOL_F) || p->get_alteration () == Rational (0)
+    || (ev->get_property ("force-accidental") == SCM_BOOL_T);
 
   if (trill_head_)
     {
@@ -140,13 +164,16 @@ ADD_ACKNOWLEDGER (Pitched_trill_engraver, trill_spanner);
 
 ADD_TRANSLATOR (Pitched_trill_engraver,
                /* doc */
-               "Print the bracketed notehead after a notehead with trill.",
+               "Print the bracketed note head after a note head with trill.",
 
                /* create */
                "TrillPitchHead "
                "TrillPitchAccidental "
                "TrillPitchGroup ",
 
-               /* read */ "",
+               /* read */
+               "",
 
-               /* write */ "");
+               /* write */
+               ""
+               );