src/voiceelt.cc

   1 /*
   2   voiceelt.cc -- implement Voice_element
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "debug.hh"
  10 #include "voice.hh"
  11 #include "voice-element.hh"
  12 #include "musicalrequest.hh"
  13 #include "commandrequest.hh"
  14
  15
  16 void
  17 Voice_element::print() const
  18 {
  19 #ifndef NPRINT
  20     mtor << "voice_element { dur :"<< duration <<"\n";
  21     for (iter_top(reqs,rc); rc.ok(); rc++) {
  22         rc->print();
  23     }
  24     mtor << "}\n";
  25 #endif
  26 }
  27
  28 void
  29 Voice_element::add(Request*r)
  30 {
  31     if (r->duration()) {
  32         assert (!duration  || duration == r->duration());
  33         duration = r->duration();
  34     }
  35
  36     r->elt_l_ = this;
  37     reqs.bottom().add(r);
  38 }
  39
  40
  41 Voice_element::Voice_element()
  42 {
  43     voice_l_ = 0;
  44     duration = 0;
  45     defined_ch_c_l_ = 0;
  46 }
  47
  48 Voice_element::Voice_element(Voice_element const&src)
  49 {
  50     defined_ch_c_l_ = src.defined_ch_c_l_;
  51
  52     voice_l_=0;
  53     for (iter_top(src.reqs, i); i.ok(); i++)
  54         add(i->clone());
  55
  56 }
  57 bool
  58 Voice_element::find_plet_start_bo(char c, Moment& moment_r)
  59 {
  60     assert( c == ']' );
  61     moment_r += duration;
  62     for ( PCursor<Request*> req_l_pcur( reqs.top() ); req_l_pcur.ok(); req_l_pcur++ ) {
  63         if (req_l_pcur->beam() && req_l_pcur->beam()->spantype == Span_req::START )
  64             return true;
  65     }
  66     return false;
  67 }
  68
  69 void
  70 Voice_element::set_default_group(String s)
  71 {
  72     for (iter_top(reqs, i); i.ok(); i++)
  73         if (i->groupchange())
  74             return ;
  75     Group_change_req *greq = new Group_change_req;
  76     greq->newgroup_str_ = s;
  77     add(greq);
  78 }
  79
  80 void
  81 Voice_element::set_plet_backwards(Moment& now_moment_r,
  82                                   Moment until_moment, int num_i, int den_i)
  83 {
  84     now_moment_r += duration;
  85     if ( now_moment_r > until_moment )
  86         return;
  87     for ( PCursor<Request*> req_l_pcur( reqs.top() ); req_l_pcur.ok(); req_l_pcur++ ) {
  88         if (req_l_pcur->beam() && req_l_pcur->beam()->spantype == Span_req::START )
  89             req_l_pcur->beam()->nplet = den_i;
  90         if (req_l_pcur->rhythmic())
  91             req_l_pcur->rhythmic()->plet_factor = Moment(num_i, den_i);
  92         if (req_l_pcur->stem())
  93             req_l_pcur->stem()->plet_factor = Moment(num_i, den_i);
  94     }
  95 }