lily/note-performer.cc

   1 /*
   2   note-performer.cc -- implement Note_performer
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1996,  1997--1998 Jan Nieuwenhuizen <janneke@gnu.org>
   7  */
   8
   9 #include "note-performer.hh"
  10 #include "musical-request.hh"
  11 #include "audio-item.hh"
  12 #include "debug.hh"
  13
  14
  15 ADD_THIS_TRANSLATOR (Note_performer);
  16
  17 Note_performer::Note_performer ()
  18 {
  19   note_req_l_ = 0;
  20 }
  21
  22 void
  23 Note_performer::do_print () const
  24 {
  25 #ifndef NPRINT
  26   if (note_req_l_)
  27     note_req_l_->print ();
  28 #endif
  29 }
  30
  31 void
  32 Note_performer::do_process_requests ()
  33 {
  34   if (note_req_l_)
  35     {
  36       int transposing_i = 0;
  37       //urg
  38       Scalar prop = get_property ("transposing");
  39       if (!prop.empty_b () && prop.isnum_b ())
  40         transposing_i = prop;
  41
  42
  43       play (new Audio_note (note_req_l_, transposing_i));
  44
  45       note_req_l_ = 0;
  46     }
  47 }
  48
  49 bool
  50 Note_performer::do_try_music (Music* req_l)
  51 {
  52   if (note_req_l_)
  53     return false;
  54
  55   if (Note_req *nr = dynamic_cast <Note_req *> (req_l))
  56     {
  57       note_req_l_ = nr;
  58       return true;
  59     }
  60   return false;
  61 }