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   do_post_move_processing();
  22   dir_ = CENTER;
  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 = dreq_l->absdynamic()->loudness_str ();
  55           td_p->text_str_ = paper()->lookup_l ()->dynamic (loud).tex_;
  56           td_p->style_str_ = "dynamic";
  57
  58           assert (!dynamic_p_) ; // TODO
  59
  60           dynamic_p_ = new Text_item (td_p);
  61           announce_element (Score_elem_info (dynamic_p_, dreq_l));
  62         }
  63       else if (dreq_l->span_dynamic())
  64         {
  65
  66           Span_dynamic_req* span_l = dreq_l->span_dynamic();
  67           if (span_l->spantype == Span_req::STOP)
  68             {
  69               if (!cresc_p_)
  70                 {
  71                   span_l->warning ("Can't find cresc to end ");
  72                 }
  73               else
  74                 {
  75                   assert (!to_end_cresc_p_);
  76                   to_end_cresc_p_ =cresc_p_;
  77                   cresc_p_ = 0;
  78                 }
  79             }
  80           else if (span_l->spantype == Span_req::START)
  81             {
  82               cresc_req_l_ = span_l;
  83               assert (!new_cresc_p);
  84               new_cresc_p  = new Crescendo;
  85               new_cresc_p->grow_dir_ = span_l->dynamic_dir_;
  86               announce_element (Score_elem_info (new_cresc_p, span_l));
  87             }
  88         }
  89     }
  90
  91   if (new_cresc_p)
  92     {
  93       cresc_p_ = new_cresc_p;
  94       cresc_p_->set_bounds(LEFT,get_staff_info().musical_l ());
  95       if (dynamic_p_)
  96         {
  97           cresc_p_->dyn_b_drul_[LEFT] = true;
  98         }
  99     }
 100 }
 101
 102 void
 103 Dynamic_engraver::do_pre_move_processing()
 104 {
 105   Staff_symbol* s_l = get_staff_info().staff_sym_l_;
 106   if (dynamic_p_)
 107     {
 108       dynamic_p_->set_staffsym (s_l);
 109       typeset_element (dynamic_p_);
 110       dynamic_p_ = 0;
 111     }
 112   if (to_end_cresc_p_)
 113     {
 114       if (dynamic_p_)
 115         to_end_cresc_p_->dyn_b_drul_[RIGHT]=true;
 116
 117       to_end_cresc_p_->set_bounds(RIGHT,get_staff_info().musical_l ());
 118       to_end_cresc_p_->set_staffsym (s_l);
 119       typeset_element (to_end_cresc_p_);
 120       to_end_cresc_p_ = 0;
 121     }
 122 }
 123
 124
 125 IMPLEMENT_IS_TYPE_B1(Dynamic_engraver,Engraver);
 126 ADD_THIS_TRANSLATOR(Dynamic_engraver);
 127
 128 void
 129 Dynamic_engraver::do_removal_processing ()
 130 {
 131   if (cresc_p_)
 132     {
 133       typeset_element (cresc_p_ );
 134       cresc_p_ =0;
 135     }
 136   if (to_end_cresc_p_)
 137     {
 138       typeset_element (to_end_cresc_p_);
 139       cresc_req_l_->warning ("unended crescendo");
 140       to_end_cresc_p_ =0;
 141     }
 142   if (dynamic_p_)
 143     {
 144       typeset_element (dynamic_p_);
 145       dynamic_p_ =0;
 146     }
 147 }
 148
 149 void
 150 Dynamic_engraver::acknowledge_element (Score_elem_info i)
 151 {
 152   if (i.elem_l_->name() == Note_column::static_name ())
 153     {
 154       if (dynamic_p_) dynamic_p_->add_support (i.elem_l_);
 155       if (to_end_cresc_p_)
 156         to_end_cresc_p_->add_support (i.elem_l_);
 157       if (cresc_p_)
 158         cresc_p_->add_support (i.elem_l_);
 159     }
 160 }