Make \footnote work via \tweak

[lilypond.git] / lily / grob.cc

diff --git a/lily/grob.cc b/lily/grob.cc
index 567bd0015f4309d8c77f75933347b7d082d11d05..cc39c979f0e9cf146b40975b01f82ed9441d08bc 100644 (file)
--- a/lily/grob.cc
+++ b/lily/grob.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2012 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
@@ -170,6 +170,17 @@ Grob::get_print_stencil () const
             = *unsmob_stencil (scm_call_1 (ly_lily_module_constant ("stencil-whiteout"),
                                            retval.smobbed_copy ()));
         }
+
+      SCM id = get_property ("id");
+      if (scm_is_string (id))
+        {
+          SCM expr = scm_list_3 (ly_symbol2scm ("id"),
+                                 id,
+                                 retval.expr ());
+
+          retval = Stencil (retval.extent_box (), expr);
+        }
+
     }
 
   return retval;
@@ -598,7 +609,7 @@ Grob::fixup_refpoint ()
   VERTICAL ORDERING
 ****************************************************************/
 
-Grob*
+Grob *
 get_maybe_root_vertical_alignment (Grob *g, Grob *maybe)
 {
   if (!g)
@@ -609,17 +620,19 @@ get_maybe_root_vertical_alignment (Grob *g, Grob *maybe)
 
 }
 
-Grob*
+Grob *
 Grob::get_root_vertical_alignment (Grob *g)
 {
   return get_maybe_root_vertical_alignment (g, 0);
 }
 
-Grob*
+Grob *
 Grob::get_vertical_axis_group (Grob *g)
 {
   if (!g)
     return 0;
+  if (!g->get_parent (Y_AXIS))
+    return 0;
   if (Axis_group_interface::has_interface (g)
       && Align_interface::has_interface (g->get_parent (Y_AXIS)))
     return g;
@@ -658,13 +671,12 @@ bool
 Grob::internal_vertical_less (Grob *g1, Grob *g2, bool pure)
 {
   Grob *vag = get_root_vertical_alignment (g1);
-  if (!vag)
-    return false;
   if (!vag)
     {
       g1->programming_error ("grob does not belong to a VerticalAlignment?");
       return false;
     }
+
   Grob *ag1 = get_vertical_axis_group (g1);
   Grob *ag2 = get_vertical_axis_group (g2);
 
@@ -783,9 +795,11 @@ ADD_INTERFACE (Grob,
                "cause "
                "color "
                "cross-staff "
+               "id "
                "extra-X-extent "
                "extra-Y-extent "
                "extra-offset "
+               "footnote-music "
                "forced-spacing "
                "interfaces "
                "layer "