lily/grob-info.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "context.hh"
  21 #include "grob-info.hh"
  22 #include "item.hh"
  23 #include "music.hh"
  24 #include "spanner.hh"
  25 #include "stream-event.hh"
  26 #include "translator-group.hh"
  27
  28 Grob_info::Grob_info (Translator *t, Grob *g)
  29 {
  30   origin_trans_ = t;
  31   grob_ = g;
  32   start_end_ = START;
  33
  34   /*
  35     assert here, because this is easier to debug.
  36   */
  37   assert (g);
  38 }
  39
  40 Grob_info::Grob_info ()
  41 {
  42   grob_ = 0;
  43   start_end_ = START;
  44   origin_trans_ = 0;
  45 }
  46
  47 Stream_event *
  48 Grob_info::event_cause () const
  49 {
  50   SCM cause = grob_->get_property ("cause");
  51   return unsmob_stream_event (cause);
  52 }
  53
  54 vector<Context*>
  55 Grob_info::origin_contexts (Translator *end) const
  56 {
  57   Context *t = origin_trans_->context ();
  58   vector<Context*> r;
  59   do
  60     {
  61       r.push_back (t);
  62       t = t->get_parent_context ();
  63     }
  64   while (t && t != end->context ());
  65
  66   return r;
  67 }
  68
  69 Context *
  70 Grob_info::context () const
  71 {
  72   return origin_trans_->context ();
  73 }
  74
  75 Spanner *
  76 Grob_info::spanner () const
  77 {
  78   return dynamic_cast<Spanner *> (grob_);
  79 }
  80
  81 Item *
  82 Grob_info::item () const
  83 {
  84   return dynamic_cast<Item *> (grob_);
  85 }
  86
  87 Stream_event *
  88 Grob_info::ultimate_event_cause () const
  89 {
  90   SCM cause = grob_->self_scm ();
  91   while (unsmob_grob (cause))
  92     {
  93       cause = unsmob_grob (cause)->get_property ("cause");
  94     }
  95   return unsmob_stream_event (cause);
  96 }