src/staffwalker.cc

   1 /*
   2   staffwalker.cc -- implement Staff_walker
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "grouping.hh"
  10 #include "staff.hh"
  11 #include "musicalrequest.hh"
  12 #include "staffwalker.hh"
  13 #include "staffcolumn.hh"
  14 #include "scorecolumn.hh"
  15 #include "debug.hh"
  16 #include "timedescription.hh"
  17 #include "commandrequest.hh"
  18 #include "grouping.hh"
  19 #include "scorewalker.hh"
  20
  21 Staff_walker::~Staff_walker()
  22 {
  23     do_pre_move();
  24 }
  25
  26 Staff_walker::Staff_walker(Staff_walker const &s)
  27     :PCursor<Staff_column*> (s)
  28 {
  29     assert(false);
  30 }
  31
  32 Staff_walker::Staff_walker(Staff * s, PScore*ps )
  33     : PCursor<Staff_column*> (s->cols_)
  34 {
  35     staff_l_ = s;
  36     pscore_l_ = ps;
  37
  38     // should be in tdes. TODO
  39     default_grouping = new Rhythmic_grouping(MInterval(0, 1), 4);
  40     score_walk_l_ = 0;
  41 }
  42
  43 Moment
  44 Staff_walker::when() const
  45 {
  46     return ptr()->when();
  47 }
  48
  49
  50 void
  51 Staff_walker::process_timing_reqs()
  52 {
  53     for (int i=0; i < ptr()->timing_req_l_arr_.size(); i++) {
  54         Timing_req * tr_l = ptr()->timing_req_l_arr_[i];
  55         if (tr_l->meterchange()) {
  56             int b_i=tr_l->meterchange()->beats_i_;
  57             int o_i = tr_l->meterchange()->one_beat_i_;
  58             time_.set_meter(b_i, o_i);
  59
  60             *default_grouping = Rhythmic_grouping(
  61                 MInterval(0,Moment(b_i, o_i)), b_i);
  62         }
  63     }
  64
  65     for (int i=0; i < ptr()->timing_req_l_arr_.size(); i++) {
  66         Timing_req * tr_l = ptr()->timing_req_l_arr_[i];
  67         if (tr_l->partial()) {
  68             time_.setpartial(tr_l->partial()->duration_);
  69         } else if (tr_l->barcheck() && time_.whole_in_measure_) {
  70             warning( "Barcheck failed", tr_l->defined_ch_c_l_ );
  71         } else if (tr_l->cadenza()) {
  72             time_.set_cadenza(tr_l->cadenza()->on_b_);
  73         } else if (tr_l->measuregrouping()) {
  74             *default_grouping = parse_grouping(
  75                 tr_l->measuregrouping()->beat_i_arr_,
  76                 tr_l->measuregrouping()->elt_length_arr_);
  77         }
  78     }
  79     time_.OK();
  80 }
  81
  82 void
  83 Staff_walker::operator++(int i)
  84 {
  85     Moment last = when();
  86
  87     do_pre_move();
  88     PCursor<Staff_column*>::operator++(i);
  89     if (ok() ) {
  90         Moment delta_t = when() - last;
  91         assert(delta_t >0);
  92         time_.add( delta_t );
  93     }
  94     do_post_move();
  95 }
  96
  97 void
  98 Staff_walker::process()
  99 {
 100     process_timing_reqs();
 101     process_requests();
 102 }
 103
 104 void
 105 Staff_walker::allow_break()
 106 {
 107     score_walk_l_->allow_break(this);
 108 }
 109