lily/multi-measure-rest-engraver.cc

   1 /*
   2   multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
   3
   4   (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
   5        Han-Wen Nienhuys <hanwen@cs.uu.nl>
   6 */
   7
   8 #include "proto.hh"
   9 #include "musical-request.hh"
  10 #include "multi-measure-rest.hh"
  11 #include "multi-measure-rest-engraver.hh"
  12 #include "score-column.hh"
  13 #include "time-description.hh"
  14 #include "bar.hh"
  15
  16
  17 ADD_THIS_TRANSLATOR (Multi_measure_rest_engraver);
  18
  19 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
  20 {
  21   start_measure_i_ = 0;
  22   rest_moments_[START] =
  23     rest_moments_[STOP] =0;
  24   multi_measure_req_l_ = 0;
  25
  26   lastrest_p_ =0;
  27   mmrest_p_ = 0;
  28 }
  29
  30 void
  31 Multi_measure_rest_engraver::acknowledge_element (Score_element_info i)
  32 {
  33   if (Bar *c = dynamic_cast<Bar*> (i.elem_l_))
  34     {
  35       if (mmrest_p_)
  36         mmrest_p_->add_column (c);
  37       if (lastrest_p_)
  38         lastrest_p_->add_column (c);
  39     }
  40 }
  41
  42 bool
  43 Multi_measure_rest_engraver::do_try_music (Music* req_l)
  44 {
  45   Rhythmic_req *r=0;
  46   if (Multi_measure_rest_req *mr =
  47       dynamic_cast<Multi_measure_rest_req *> (req_l))
  48     r=mr;
  49   else if (Repetitions_req *rr =
  50            dynamic_cast<Repetitions_req *> (req_l))
  51     r=rr;
  52   if (r)
  53     {
  54       if (multi_measure_req_l_)
  55         if (!multi_measure_req_l_->equal_b (r)
  56             || rest_moments_[START] != now_mom ())
  57           return false;
  58
  59       multi_measure_req_l_ = r;
  60       rest_moments_[START] = now_mom ();
  61
  62       rest_moments_[STOP] = rest_moments_[START] +
  63         multi_measure_req_l_->duration_.length_mom ();
  64       return true;
  65     }
  66   return false;
  67 }
  68
  69 void
  70 Multi_measure_rest_engraver::do_process_requests ()
  71 {
  72   if (multi_measure_req_l_ && !mmrest_p_)
  73     {
  74       Time_description const *time = get_staff_info().time_C_;
  75       mmrest_p_ = new Multi_measure_rest;
  76       if(dynamic_cast<Repetitions_req *> (multi_measure_req_l_))
  77         mmrest_p_->set_elt_property (alt_symbol_scm_sym,
  78                                      ly_ch_C_to_scm ("scripts-repeatsign"));
  79       announce_element (Score_element_info (mmrest_p_, multi_measure_req_l_));
  80       start_measure_i_ = time->bars_i_;
  81     }
  82 }
  83
  84 void
  85 Multi_measure_rest_engraver::do_pre_move_processing ()
  86 {
  87   Moment now (now_mom ());
  88   Time_description const *time = get_staff_info().time_C_;
  89   if (mmrest_p_ && (now >= rest_moments_[START])
  90     && !time->whole_in_measure_
  91     && (mmrest_p_->column_arr_.size () >= 2))
  92     {
  93       typeset_element (mmrest_p_);
  94       /*
  95         must keep mmrest_p_ around to set measures_i_
  96        */
  97     }
  98   if (lastrest_p_)
  99     {
 100       typeset_element (lastrest_p_);
 101       lastrest_p_ = 0;
 102     }
 103 }
 104
 105 void
 106 Multi_measure_rest_engraver::do_post_move_processing ()
 107 {
 108   Time_description const *time = get_staff_info().time_C_;
 109   Moment now (now_mom ());
 110
 111   if (mmrest_p_ && !time->whole_in_measure_)
 112     {
 113       lastrest_p_ = mmrest_p_;
 114       lastrest_p_->measures_i_ = time->bars_i_ - start_measure_i_;
 115       mmrest_p_ = 0;
 116     }
 117
 118   if (now >= rest_moments_[STOP])
 119     {
 120       multi_measure_req_l_ = 0;
 121       mmrest_p_ = 0;
 122     }
 123 }
 124