lily/dynamic-engraver.cc

   1 /*
   2   dynamic-reg.cc -- implement Dynamic_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include "debug.hh"
   9 #include "crescendo.hh"
  10 #include "dynamic-engraver.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   if(Dynamic_req * d = dynamic_cast <Dynamic_req *> (r))
  38     {
  39       for (int i=0; i < dynamic_req_l_arr_.size (); i++)
  40         if (d->equal_b (dynamic_req_l_arr_[i]))
  41           return true;
  42
  43       dynamic_req_l_arr_.push (d);
  44       return true;
  45     }
  46   return false;
  47 }
  48 void
  49 Dynamic_engraver::do_process_requests()
  50 {
  51   Crescendo*  new_cresc_p=0;
  52   for (int i=0; i < dynamic_req_l_arr_.size(); i++)
  53     {
  54       Dynamic_req *dreq_l = dynamic_req_l_arr_[i];
  55       if (Absolute_dynamic_req *absd = dynamic_cast<Absolute_dynamic_req *> (dreq_l))
  56         {
  57
  58           if (dynamic_p_)
  59             {
  60               dynamic_req_l_arr_[i]->warning (_("Got a dynamic already.  Continuing dazed and confused"));
  61               continue;
  62             }
  63
  64           Text_def * td_p = new Text_def;
  65           td_p->align_dir_ = CENTER;
  66           String loud = absd->loudness_str ();
  67           td_p->text_str_ = paper ()->lookup_l (0)->dynamic (loud).str_; // ugh
  68           td_p->style_str_ = "dynamic";
  69
  70
  71
  72           dynamic_p_ = new Text_item (td_p);
  73           announce_element (Score_element_info (dynamic_p_, dreq_l));
  74         }
  75       else if (Span_dynamic_req *span_l = dynamic_cast <Span_dynamic_req *> (dreq_l))
  76         {
  77           if (span_l->spantype == Span_req::STOP)
  78             {
  79               if (!cresc_p_)
  80                 {
  81                   span_l->warning (_ ("can't find (de)crescendo to end"));
  82                 }
  83               else
  84                 {
  85                   assert (!to_end_cresc_p_);
  86                   to_end_cresc_p_ =cresc_p_;
  87                   cresc_p_ = 0;
  88                 }
  89             }
  90           else if (span_l->spantype == Span_req::START)
  91             {
  92               cresc_req_l_ = span_l;
  93               assert (!new_cresc_p);
  94               new_cresc_p  = new Crescendo;
  95               new_cresc_p->grow_dir_ = span_l->dynamic_dir_;
  96               announce_element (Score_element_info (new_cresc_p, span_l));
  97             }
  98         }
  99     }
 100
 101   if (new_cresc_p)
 102     {
 103       if (cresc_p_)
 104         {
 105           ::warning (_ ("Too many crescendi here"));
 106           typeset_element (cresc_p_);
 107           cresc_p_ = 0;
 108         }
 109
 110       cresc_p_ = new_cresc_p;
 111       cresc_p_->set_bounds(LEFT,get_staff_info().musical_l ());
 112       if (dynamic_p_)
 113         {
 114           cresc_p_->dyn_b_drul_[LEFT] = true;
 115         }
 116     }
 117 }
 118
 119 void
 120 Dynamic_engraver::do_pre_move_processing()
 121 {
 122   Staff_symbol* s_l = get_staff_info().staff_sym_l_;
 123   if (to_end_cresc_p_)
 124     {
 125       if (dynamic_p_)
 126         to_end_cresc_p_->dyn_b_drul_[RIGHT]=true;
 127
 128
 129       Scalar prop = get_property ("dynamicdir");
 130       if (prop.isnum_b ())
 131        {
 132          to_end_cresc_p_->dir_ = (Direction) (int) prop;
 133        }
 134       to_end_cresc_p_->set_bounds(RIGHT,get_staff_info().musical_l ());
 135       to_end_cresc_p_->add_support (s_l);
 136       typeset_element (to_end_cresc_p_);
 137       to_end_cresc_p_ = 0;
 138     }
 139   if (dynamic_p_)
 140     {
 141       Scalar prop = get_property ("dynamicdir");
 142       if (prop.isnum_b ())
 143        {
 144          dynamic_p_->dir_ = (Direction) (int) prop;
 145        }
 146
 147       dynamic_p_->add_support (s_l);
 148       typeset_element (dynamic_p_);
 149       dynamic_p_ = 0;
 150     }
 151 }
 152
 153
 154 IMPLEMENT_IS_TYPE_B1(Dynamic_engraver,Engraver);
 155 ADD_THIS_TRANSLATOR(Dynamic_engraver);
 156
 157 void
 158 Dynamic_engraver::do_removal_processing ()
 159 {
 160   if (cresc_p_)
 161     {
 162       typeset_element (cresc_p_ );
 163
 164       cresc_req_l_->warning (_ ("unended crescendo"));
 165       cresc_p_ =0;
 166     }
 167   if (to_end_cresc_p_)
 168     {
 169       typeset_element (to_end_cresc_p_);
 170       to_end_cresc_p_ =0;
 171     }
 172   if (dynamic_p_)
 173     {
 174       typeset_element (dynamic_p_);
 175       dynamic_p_ =0;
 176     }
 177 }
 178
 179 void
 180 Dynamic_engraver::acknowledge_element (Score_element_info i)
 181 {
 182   if (dynamic_cast<Note_column *> (i.elem_l_))
 183     {
 184       if (dynamic_p_)
 185         dynamic_p_->add_support (i.elem_l_);
 186
 187       if (to_end_cresc_p_)
 188         to_end_cresc_p_->add_support (i.elem_l_);
 189
 190       if (cresc_p_)
 191         cresc_p_->add_support (i.elem_l_);
 192     }
 193 }