lily/grob-info.cc

   1 /*
   2   grob-info.cc -- implement Grob_info
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "context.hh"
  10 #include "grob-info.hh"
  11 #include "item.hh"
  12 #include "music.hh"
  13 #include "spanner.hh"
  14 #include "stream-event.hh"
  15 #include "translator-group.hh"
  16
  17 Grob_info::Grob_info (Translator *t, Grob *g)
  18 {
  19   origin_trans_ = t;
  20   grob_ = g;
  21   start_end_ = START;
  22
  23   /*
  24     assert here, because this is easier to debug.
  25   */
  26   assert (g);
  27 }
  28
  29 Grob_info::Grob_info ()
  30 {
  31   grob_ = 0;
  32   start_end_ = START;
  33   origin_trans_ = 0;
  34 }
  35
  36 Stream_event *
  37 Grob_info::event_cause () const
  38 {
  39   SCM cause = grob_->get_property ("cause");
  40   return unsmob_stream_event (cause);
  41 }
  42
  43 vector<Context*>
  44 Grob_info::origin_contexts (Translator *end) const
  45 {
  46   Context *t = origin_trans_->context ();
  47   vector<Context*> r;
  48   do
  49     {
  50       r.push_back (t);
  51       t = t->get_parent_context ();
  52     }
  53   while (t && t != end->context ());
  54
  55   return r;
  56 }
  57
  58 Context *
  59 Grob_info::context () const
  60 {
  61   return origin_trans_->context ();
  62 }
  63
  64 Spanner *
  65 Grob_info::spanner () const
  66 {
  67   return dynamic_cast<Spanner *> (grob_);
  68 }
  69
  70 Item *
  71 Grob_info::item () const
  72 {
  73   return dynamic_cast<Item *> (grob_);
  74 }
  75
  76 Stream_event *
  77 Grob_info::ultimate_event_cause () const
  78 {
  79   SCM cause = grob_->self_scm ();
  80   while (unsmob_grob (cause))
  81     {
  82       cause = unsmob_grob (cause)->get_property ("cause");
  83     }
  84   return unsmob_stream_event (cause);
  85 }