lily/repeated-music.cc

   1 /*
   2   repeated-music.cc --  implement Repeated_music
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7
   8  */
   9
  10 #include "repeated-music.hh"
  11 #include "music-list.hh"
  12 #include "musical-pitch.hh"
  13 #include "debug.hh"
  14
  15 Repeated_music::Repeated_music(Music *beg, int times, Music_sequence * alts)
  16 {
  17   repeat_body_p_ = beg;
  18   fold_b_ = false;
  19   repeats_i_ = times;
  20   alternatives_p_ = alts;
  21   volta_fold_b_ = true;
  22   if (alts)
  23     alts->music_p_list_p_->truncate (times);
  24 }
  25
  26 Repeated_music::Repeated_music (Repeated_music const &s)
  27   : Music (s)
  28 {
  29   repeats_i_ = s.repeats_i_;
  30   fold_b_ = s.fold_b_;
  31   volta_fold_b_ = s.volta_fold_b_;
  32
  33   repeat_body_p_ = s.repeat_body_p_ ? s.repeat_body_p_->clone () : 0;
  34   alternatives_p_ = s.alternatives_p_
  35     ? dynamic_cast<Music_sequence*> (s.alternatives_p_->clone ()):0;
  36 }
  37
  38 Repeated_music::~Repeated_music ()
  39 {
  40   delete repeat_body_p_;
  41   delete alternatives_p_;
  42 }
  43
  44 void
  45 Repeated_music::do_print () const
  46 {
  47 #ifndef NPRINT
  48   DEBUG_OUT << "Fold = " << fold_b_ << " reps: " << repeats_i_;
  49
  50   if (repeat_body_p_)
  51     repeat_body_p_->print();
  52
  53   if (alternatives_p_)
  54     alternatives_p_->print();
  55 #endif
  56 }
  57
  58 Musical_pitch
  59 Repeated_music::to_relative_octave (Musical_pitch p)
  60 {
  61   if (repeat_body_p_)
  62     p = repeat_body_p_->to_relative_octave (p);
  63
  64   if (alternatives_p_)
  65     p = alternatives_p_->do_relative_octave (p, false);
  66   return p;
  67 }
  68
  69
  70
  71 void
  72 Repeated_music::transpose (Musical_pitch p)
  73 {
  74   if (repeat_body_p_)
  75     repeat_body_p_->transpose (p);
  76
  77   if (alternatives_p_)
  78     alternatives_p_->transpose (p);
  79 }
  80
  81 void
  82 Repeated_music::compress (Moment p)
  83 {
  84   if (repeat_body_p_)
  85     repeat_body_p_->compress (p);
  86
  87   if (alternatives_p_)
  88     alternatives_p_->compress (p);
  89 }
  90
  91 Moment
  92 Repeated_music::alternatives_length_mom () const
  93 {
  94   if (!alternatives_p_ )
  95     return 0;
  96
  97   if  (fold_b_)
  98     return alternatives_p_->maximum_length ();
  99
 100   Moment m =0;
 101   int done =0;
 102   Cons<Music> *p = alternatives_p_->music_p_list_p_->head_;
 103   while (p && done < repeats_i_)
 104     {
 105       m = m + p->car_->length_mom ();
 106       done ++;
 107       if (volta_fold_b_
 108           || repeats_i_ - done < alternatives_p_->length_i ())
 109         p = p->next_;
 110     }
 111   return m;
 112 }
 113
 114 Moment
 115 Repeated_music::length_mom () const
 116 {
 117   Moment m =0;
 118   if (fold_b_)
 119     {
 120       if (repeat_body_p_)
 121         m += repeat_body_p_->length_mom ();
 122     }
 123   else
 124     {
 125       Moment beg = (repeat_body_p_) ? repeat_body_p_->length_mom () : Rational(0);
 126       if (!volta_fold_b_)
 127         beg *=  Rational (repeats_i_);
 128       m += beg;
 129     }
 130
 131   m += alternatives_length_mom ();
 132   return m;
 133 }
 134