lily/multi-measure-rest-engraver.cc

   1 /*
   2   multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
   3
   4   (c) 1998 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 "paper-score.hh"
  15 //#include "p-score.hh"
  16 //#include "paper-def.hh"
  17 //#include "main.hh"
  18 //#include "global-translator.hh"
  19 #include "bar.hh"
  20
  21
  22 ADD_THIS_TRANSLATOR (Multi_measure_rest_engraver);
  23
  24 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
  25 {
  26   start_measure_i_ = 0;
  27   rest_moments_[START] =
  28     rest_moments_[STOP] =0;
  29   multi_measure_req_l_ = 0;
  30   mmrest_p_ = 0;
  31 }
  32
  33 void
  34 Multi_measure_rest_engraver::acknowledge_element (Score_element_info i)
  35 {
  36   if (Bar *c = dynamic_cast<Bar*> (i.elem_l_))
  37     {
  38       if (mmrest_p_)
  39         mmrest_p_->add_column (c);
  40       if (lastrest_p_)
  41         lastrest_p_->add_column (c);
  42     }
  43 }
  44
  45 bool
  46 Multi_measure_rest_engraver::do_try_music (Music* req_l)
  47 {
  48  if (Multi_measure_rest_req *mr = dynamic_cast<Multi_measure_rest_req *> (req_l))
  49    {
  50      if (multi_measure_req_l_)
  51        if (!multi_measure_req_l_->equal_b (mr)
  52            || rest_moments_[START] != now_moment ())
  53          return false;
  54
  55      multi_measure_req_l_ = mr;
  56      rest_moments_[START] = now_moment ();
  57
  58      rest_moments_[STOP] = rest_moments_[START] + multi_measure_req_l_->duration_.length ();
  59      return true;
  60    }
  61  return false;
  62 }
  63
  64 void
  65 Multi_measure_rest_engraver::do_process_requests ()
  66 {
  67   if (multi_measure_req_l_ && !mmrest_p_)
  68     {
  69       Time_description const *time = get_staff_info().time_C_;
  70       mmrest_p_ = new Multi_measure_rest;
  71       announce_element (Score_element_info (mmrest_p_, multi_measure_req_l_));
  72       start_measure_i_ = time->bars_i_;
  73     }
  74 }
  75
  76 void
  77 Multi_measure_rest_engraver::do_pre_move_processing ()
  78 {
  79   Moment now (now_moment ());
  80   Time_description const *time = get_staff_info().time_C_;
  81   if (mmrest_p_ && (now >= rest_moments_[START])
  82     && !time->whole_in_measure_
  83     && (mmrest_p_->column_arr_.size () >= 2))
  84     {
  85       typeset_element (mmrest_p_);
  86       /*
  87         must keep mmrest_p_ around to set measures_i_
  88        */
  89     }
  90   if (lastrest_p_)
  91     {
  92       typeset_element (lastrest_p_);
  93       lastrest_p_ = 0;
  94     }
  95 }
  96
  97 void
  98 Multi_measure_rest_engraver::do_post_move_processing ()
  99 {
 100   Time_description const *time = get_staff_info().time_C_;
 101   Moment now (now_moment ());
 102
 103   if (mmrest_p_ && !time->whole_in_measure_)
 104     {
 105       lastrest_p_ = mmrest_p_;
 106       lastrest_p_->measures_i_ = time->bars_i_ - start_measure_i_;
 107       mmrest_p_ = 0;
 108     }
 109
 110   if (now >= rest_moments_[STOP])
 111     {
 112       multi_measure_req_l_ = 0;
 113       mmrest_p_ = 0;
 114     }
 115 }
 116