X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstaff-grouper-interface.cc;h=6e496ca03ca13e0aad4eb492aa494ed34ab77f5b;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=ec204fbf9bc70bda428f74427498b02b647951b9;hpb=1c846b2c2348b4e0ca4a3c2e8fb267047ba2d203;p=lilypond.git

diff --git a/lily/staff-grouper-interface.cc b/lily/staff-grouper-interface.cc
index ec204fbf9b..6e496ca03c 100644
--- a/lily/staff-grouper-interface.cc
+++ b/lily/staff-grouper-interface.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2009--2011 Joe Neeman <joeneeman@gmail.com>
+  Copyright (C) 2009--2015 Joe Neeman <joeneeman@gmail.com>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -23,24 +23,36 @@
 #include "page-layout-problem.hh"
 #include "pointer-group-interface.hh"
 
-Grob*
-Staff_grouper_interface::get_maybe_pure_last_grob (Grob *me, bool pure, int start, int end)
+/* Checks whether the child grob is in the "interior" of this staff-grouper.
+   This is the case if the next spaceable, living child after the given one
+   belongs to the group.
+*/
+bool
+Staff_grouper_interface::maybe_pure_within_group (Grob *me, Grob *child, bool pure, int start, int end)
 {
   extract_grob_set (me, "elements", elts);
-  for (vsize i = elts.size (); i--;)
-    if (Page_layout_problem::is_spaceable (elts[i])
-	&& ((pure && !Hara_kiri_group_spanner::request_suicide (me, start, end))
-	    || (!pure && elts[i]->is_live ())))
-      return elts[i];
 
-  return 0;
+  vector<Grob *>::const_iterator i = find (elts, child);
+
+  if (i == elts.end ())
+    return false;
+
+  for (++i; i != elts.end (); ++i)
+    if (Page_layout_problem::is_spaceable (*i)
+        && ((pure && !Hara_kiri_group_spanner::request_suicide (*i, start, end))
+            || (!pure && (*i)->is_live ())))
+      return me == Grob::unsmob ((*i)->get_object ("staff-grouper"));
+
+  // If there was no spaceable, living child after me, I don't
+  // count as within the group.
+  return false;
 }
 
 ADD_INTERFACE (Staff_grouper_interface,
-	       "A grob that collects staves together.",
+               "A grob that collects staves together.",
 
-	       /* properties */
-	       "staff-staff-spacing "
-	       "staffgroup-staff-spacing "
-	       );
+               /* properties */
+               "staff-staff-spacing "
+               "staffgroup-staff-spacing "
+              );