lily/engraver.cc

   1 /*
   2   engraver.cc -- implement Engraver
   3
   4   Sourcefile of GNU LilyPond music type setter
   5
   6   (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "engraver.hh"
  10
  11 #include "music.hh"
  12 #include "score-engraver.hh"
  13 #include "warn.hh"
  14 #include "spanner.hh"
  15 #include "item.hh"
  16 #include "context.hh"
  17 #include "score-context.hh"
  18 #include "lilypond-key.hh"
  19
  20 Engraver_group_engraver *
  21 Engraver::get_daddy_engraver () const
  22 {
  23   return dynamic_cast<Engraver_group_engraver *> (get_daddy_translator ());
  24 }
  25
  26 void
  27 Engraver::announce_grob (Grob_info inf)
  28 {
  29   get_daddy_engraver ()->announce_grob (inf);
  30 }
  31
  32 /*
  33   CAUSE is the object (typically a Music object)  that
  34   was the reason for making E.
  35 */
  36 void
  37 Engraver::announce_grob (Grob *e, SCM cause)
  38 {
  39   if (unsmob_music (cause) || unsmob_grob (cause))
  40     e->set_property ("cause", cause);
  41
  42   Grob_info i (this, e);
  43
  44   Engraver_group_engraver *g = get_daddy_engraver ();
  45   if (g)
  46     g->announce_grob (i);
  47 }
  48
  49 Engraver::Engraver ()
  50 {
  51 }
  52
  53 Score_engraver *
  54 Engraver::get_score_engraver () const
  55 {
  56   return dynamic_cast<Score_engraver *> (get_score_context ()->implementation ());
  57 }
  58
  59 #include "translator.icc"
  60
  61 ADD_TRANSLATOR (Engraver,
  62                 "Base class for engravers. Does nothing, so it is not used.",
  63                 "",
  64                 "",
  65                 "",
  66                 "");
  67