lily/timing-translator.cc

   1
   2 /*
   3   timing-translator.cc -- implement Timing_translator
   4
   5   source file of the GNU LilyPond music typesetter
   6
   7   (c)  1997--1998 Han-Wen Nienhuys <hanwen@stack.nl>
   8 */
   9
  10 #include "timing-translator.hh"
  11 #include "command-request.hh"
  12 #include "translator-group.hh"
  13 #include "global-translator.hh"
  14 #include "multi-measure-rest.hh"
  15
  16 Timing_translator::Timing_translator ()
  17 {
  18   default_grouping_ = Rhythmic_grouping (MInterval (0, 1), 4); // ugh
  19   mmrest_b_ = false;
  20 }
  21
  22 bool
  23 Timing_translator::do_try_request(Request*r)
  24 {
  25   Command_req * c = r->command();
  26   if (!(c && c->timing()))
  27     return false;
  28   for (int i=0; i < timing_req_l_arr_.size (); i++)
  29     {
  30       if (timing_req_l_arr_[i]->equal_b(r))
  31         return true;
  32       if (timing_req_l_arr_[i]->name() == r->name())
  33         {
  34           r->warning (_("conflicting timing request"));
  35           return false;
  36         }
  37     }
  38
  39   timing_req_l_arr_.push(c->timing());
  40   return true;
  41 }
  42
  43 Meter_change_req*
  44 Timing_translator::meter_req_l() const
  45 {
  46   Meter_change_req *m_l=0;
  47   for (int i=0; !m_l && i < timing_req_l_arr_.size (); i++)
  48     {
  49       m_l=timing_req_l_arr_[i]->meterchange();
  50     }
  51   return m_l;
  52 }
  53
  54 void
  55 Timing_translator::do_process_requests()
  56 {
  57   for (int i=0; i < timing_req_l_arr_.size (); i++)
  58     {
  59       Timing_req * tr_l = timing_req_l_arr_[i];
  60       Meter_change_req *m_l = tr_l->meterchange();
  61       if (m_l)
  62         {
  63           int b_i= m_l->beats_i_;
  64           int o_i = m_l->one_beat_i_;
  65           if (! time_.allow_meter_change_b())
  66             tr_l->warning (_("Meter change not allowed here"));
  67           else
  68             {
  69               time_.set_meter (b_i, o_i);
  70               default_grouping_ =
  71                 Rhythmic_grouping (MInterval (0,Moment (b_i, o_i)), b_i);
  72             }
  73         }
  74       else if (tr_l->partial())
  75         {
  76           Moment m = tr_l->partial()->duration_;
  77           String error = time_.try_set_partial_str (m);
  78           if (error.length_i ())
  79             {
  80               tr_l->warning (error);
  81             }
  82           else
  83             time_.setpartial (m);
  84         }
  85       else if (tr_l->barcheck())
  86         {
  87           if (time_.whole_in_measure_)
  88             {
  89               tr_l ->warning (_("Barcheck failed"));
  90
  91               time_.whole_in_measure_ = 0; // resync
  92               time_.error_b_ = true;
  93             }
  94
  95         }
  96       else if (tr_l->cadenza())
  97         {
  98           time_.set_cadenza (tr_l->cadenza()->on_b_);
  99         }
 100       else if (tr_l->measuregrouping())
 101         {
 102           default_grouping_ =
 103             parse_grouping (tr_l->measuregrouping()->beat_i_arr_,
 104                             tr_l->measuregrouping()->elt_length_arr_);
 105
 106         }
 107     }
 108 }
 109
 110
 111 void
 112 Timing_translator::do_pre_move_processing()
 113 {
 114   timing_req_l_arr_.set_size (0);
 115   Global_translator *global_l =
 116     daddy_trans_l_->ancestor_l (100)->global_l (); // ugh 100.
 117
 118   if (!time_.cadenza_b_ && !mmrest_b_)
 119     global_l->add_moment_to_process (time_.next_bar_moment ());
 120 //  mmrest_b_ = false;
 121 }
 122
 123 IMPLEMENT_IS_TYPE_B1(Timing_translator, Translator);
 124 ADD_THIS_TRANSLATOR(Timing_translator);
 125
 126 void
 127 Timing_translator::do_creation_processing()
 128 {
 129   time_.when_ = now_moment ();
 130 }
 131
 132 void
 133 Timing_translator::do_post_move_processing()
 134 {
 135   time_.add (now_moment ()  - time_.when_);
 136 }
 137
 138 void
 139 Timing_translator::do_print () const
 140 {
 141 #ifndef NPRINT
 142   time_.print ();
 143   default_grouping_.print ();
 144 #endif
 145 }