lily/dynamic-grav.cc

   1 /*
   2   dynamic-reg.cc -- implement Dynamic_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8 #include "debug.hh"
   9 #include "crescendo.hh"
  10 #include "dynamic-grav.hh"
  11 #include "musical-request.hh"
  12 #include "text-item.hh"
  13 #include "lookup.hh"
  14 #include "paper-def.hh"
  15 #include "score-column.hh"
  16 #include "staff-sym.hh"
  17 #include "note-column.hh"
  18
  19 Dynamic_engraver::Dynamic_engraver()
  20 {
  21   dir_ = CENTER;
  22   do_post_move_processing();
  23   dynamic_p_ =0;
  24   to_end_cresc_p_ = cresc_p_ = 0;
  25   cresc_req_l_ = 0;
  26 }
  27
  28 void
  29 Dynamic_engraver::do_post_move_processing()
  30 {
  31   dynamic_req_l_arr_.clear();
  32 }
  33
  34 bool
  35 Dynamic_engraver::do_try_request (Request * r)
  36 {
  37   Musical_req * m = r->musical();
  38   if (!m || !m->dynamic())
  39     return false;
  40   dynamic_req_l_arr_.push (m->dynamic());
  41   return true;
  42 }
  43 void
  44 Dynamic_engraver::do_process_requests()
  45 {
  46   Crescendo*  new_cresc_p=0;
  47   for (int i=0; i < dynamic_req_l_arr_.size(); i++)
  48     {
  49       Dynamic_req *dreq_l = dynamic_req_l_arr_[i];
  50       if (dreq_l->absdynamic())
  51         {
  52           Text_def * td_p = new Text_def;
  53           td_p->align_i_ = 0;
  54           String loud =Dynamic_req::loudness_str (
  55                                                   dreq_l->absdynamic()->loudness_);
  56
  57           td_p->text_str_ = paper()->lookup_l ()->dynamic (loud).tex;
  58           td_p->style_str_ = "dynamic";
  59
  60           assert (!dynamic_p_) ; // TODO
  61
  62           dynamic_p_ = new Text_item (td_p);
  63           announce_element (Score_elem_info (dynamic_p_, dreq_l));
  64         }
  65       else if (dreq_l->span_dynamic())
  66         {
  67
  68           Span_dynamic_req* span_l = dreq_l->span_dynamic();
  69           if (span_l->spantype == Span_req::STOP)
  70             {
  71               if (!cresc_p_)
  72                 {
  73                   span_l->warning ("Can't find cresc to end ");
  74                 }
  75               else
  76                 {
  77                   assert (!to_end_cresc_p_);
  78                   to_end_cresc_p_ =cresc_p_;
  79                   cresc_p_ = 0;
  80                 }
  81             }
  82           else if (span_l->spantype == Span_req::START)
  83             {
  84               cresc_req_l_ = span_l;
  85               assert (!new_cresc_p);
  86               new_cresc_p  = new Crescendo;
  87               new_cresc_p->grow_dir_ = span_l->dynamic_dir_;
  88               announce_element (Score_elem_info (new_cresc_p, span_l));
  89             }
  90         }
  91     }
  92
  93   if (new_cresc_p)
  94     {
  95       cresc_p_ = new_cresc_p;
  96       cresc_p_->set_bounds(LEFT,get_staff_info().musical_l ());
  97       if (dynamic_p_)
  98         {
  99           cresc_p_->dyn_b_drul_[LEFT] = true;
 100         }
 101     }
 102 }
 103
 104 void
 105 Dynamic_engraver::do_pre_move_processing()
 106 {
 107   Staff_symbol* s_l = get_staff_info().staff_sym_l_;
 108   if (dynamic_p_)
 109     {
 110       dynamic_p_->set_staffsym (s_l);
 111       typeset_element (dynamic_p_);
 112       dynamic_p_ = 0;
 113     }
 114   if (to_end_cresc_p_)
 115     {
 116       if (dynamic_p_)
 117         to_end_cresc_p_->dyn_b_drul_[RIGHT]=true;
 118
 119       to_end_cresc_p_->set_bounds(RIGHT,get_staff_info().musical_l ());
 120       to_end_cresc_p_->set_staffsym (s_l);
 121       typeset_element (to_end_cresc_p_);
 122       to_end_cresc_p_ = 0;
 123     }
 124 }
 125
 126 void
 127 Dynamic_engraver::set_feature (Feature i)
 128 {
 129   if (i.type_ == "vdir")
 130     dir_ = (Direction) int(i.value_);
 131 }
 132
 133
 134 IMPLEMENT_IS_TYPE_B1(Dynamic_engraver,Engraver);
 135 ADD_THIS_ENGRAVER(Dynamic_engraver);
 136
 137 Dynamic_engraver::~Dynamic_engraver()
 138 {
 139   delete dynamic_p_;
 140   delete to_end_cresc_p_;
 141   if (cresc_p_)
 142     {
 143       cresc_req_l_->warning ("unended crescendo");
 144     }
 145   delete cresc_p_;
 146 }
 147 void
 148 Dynamic_engraver::acknowledge_element (Score_elem_info i)
 149 {
 150   if (i.elem_l_->name() == Note_column::static_name ())
 151     {
 152       if (dynamic_p_) dynamic_p_->add_support (i.elem_l_);
 153       if (to_end_cresc_p_)
 154         to_end_cresc_p_->add_support (i.elem_l_);
 155       if (cresc_p_)
 156         cresc_p_->add_support (i.elem_l_);
 157     }
 158 }