lily/staff-performer.cc

   1 /*
   2   staff-performer.cc -- implement Staff_performer
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
   7  */
   8
   9 #include "staff-performer.hh"
  10 #include "translator-group.hh"
  11 #include "debug.hh"
  12 #include "audio-column.hh"
  13 #include "audio-item.hh"
  14 #include "audio-staff.hh"
  15
  16 IMPLEMENT_IS_TYPE_B1(Staff_performer,Performer_group_performer);
  17 ADD_THIS_TRANSLATOR(Staff_performer);
  18
  19 Staff_performer::Staff_performer()
  20 {
  21   audio_staff_p_ = 0;
  22 }
  23
  24 Staff_performer::~Staff_performer()
  25 {
  26   delete audio_staff_p_;
  27 }
  28
  29 void
  30 Staff_performer::do_creation_processing()
  31 {
  32   audio_staff_p_ = new Audio_staff;
  33
  34   if (instrument_str().length_i())
  35     {
  36       // staff name
  37       play (new Audio_text (Audio_text::TRACK_NAME, id_str_));
  38       // instrument description
  39       play (new Audio_text (Audio_text::INSTRUMENT_NAME, instrument_str ()));
  40     }
  41
  42   // tempo
  43   play (new Audio_tempo (get_tempo_i ()));
  44
  45   if (instrument_str ().length_i ())
  46     // instrument
  47     play (new Audio_instrument (instrument_str ()));
  48   Performer_group_performer::do_creation_processing ();
  49 }
  50
  51 void
  52 Staff_performer::do_removal_processing()
  53 {
  54   Performer_group_performer::do_removal_processing ();
  55   Performer::play (audio_staff_p_);
  56   audio_staff_p_ = 0;
  57 }
  58
  59 String
  60 Staff_performer::instrument_str()
  61 {
  62   // mustn't ask Score for instrument: it will return piano!
  63   return get_property ("instrument");
  64
  65 /* ugh, but can't
  66   if (properties_dict_.elt_b ("instrument"))
  67     return properties_dict_["instrument"];
  68   return "";
  69 */
  70 }
  71
  72 void
  73 Staff_performer::play (Audio_element* p)
  74 {
  75   if (p->is_type_b (Audio_item::static_name()))
  76     {
  77       audio_staff_p_->add ((Audio_item*)p);
  78     }
  79   Performer::play (p);
  80 }
  81