lily/chord-name-engraver.cc

   1 /*
   2   chord-name-engraver.cc -- implement Chord_name_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998--1999, 1999 Jan Nieuwenhuizen <janneke@gnu.org>
   7 */
   8
   9 #include "chord-name-engraver.hh"
  10 #include "chord.hh"
  11 #include "musical-request.hh"
  12 #include "paper-def.hh"
  13 #include "lookup.hh"
  14 #include "paper-def.hh"
  15 #include "main.hh"
  16 #include "dimensions.hh"
  17 #include "g-text-item.hh"
  18
  19 ADD_THIS_TRANSLATOR (Chord_name_engraver);
  20
  21 Chord_name_engraver::Chord_name_engraver ()
  22 {
  23   tonic_req_ = 0;
  24 }
  25
  26 void
  27 Chord_name_engraver::acknowledge_element (Score_element_info i)
  28 {
  29   if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
  30     pitch_arr_.push (n->pitch_);
  31 }
  32
  33 bool
  34 Chord_name_engraver::do_try_music (Music* m)
  35 {
  36   if (Note_req* n = dynamic_cast<Note_req*> (m))
  37     {
  38       pitch_arr_.push (n->pitch_);
  39       return true;
  40     }
  41   if (Tonic_req* t = dynamic_cast<Tonic_req*> (m))
  42     {
  43       tonic_req_ = t;
  44       return true;
  45     }
  46   return false;
  47 }
  48
  49 void
  50 Chord_name_engraver::do_process_requests ()
  51 {
  52   if (text_p_arr_.size ())
  53     return;
  54   if (!pitch_arr_.size ())
  55     return;
  56
  57   Chord chord (pitch_arr_);
  58   Musical_pitch* inversion = 0;
  59   Scalar chord_inversion = get_property ("chordInversion", 0);
  60   if (chord_inversion.to_bool ())
  61     {
  62       int tonic_i = tonic_req_
  63         ? chord.find_notename_i (tonic_req_->pitch_) : chord.find_tonic_i ();
  64
  65       if (tonic_i)
  66         {
  67           inversion = &pitch_arr_[0];
  68           chord.rebuild_insert_inversion (tonic_i);
  69         }
  70     }
  71
  72   G_text_item* item_p =  new G_text_item;
  73
  74   /*
  75    TODO:
  76      - switch on property, add american (?) chordNameStyle:
  77        Chord::american_str (...)
  78
  79   Scalar chordNameStyle = get_property ("chordNameStyle", 0);
  80   if (chordNameStyle == "Banter")
  81     item_p->text_str_ = chord.banter_str (inversion);
  82    */
  83
  84   item_p->text_str_ = chord.banter_str (inversion);
  85
  86   Scalar style = get_property ("textStyle", 0);
  87   if (style.length_i ())
  88     item_p->style_str_ = style;
  89
  90   text_p_arr_.push (item_p);
  91   announce_element (Score_element_info (item_p, 0));
  92 }
  93
  94 void
  95 Chord_name_engraver::do_pre_move_processing ()
  96 {
  97   for (int i=0; i < text_p_arr_.size (); i++)
  98     {
  99       typeset_element (text_p_arr_[i]);
 100     }
 101   text_p_arr_.clear ();
 102   pitch_arr_.clear ();
 103   tonic_req_ = 0;
 104 }