lily/score-engraver.cc

   1 /*
   2   score-grav.cc -- implement Score_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
   9 #include "super-element.hh"
  10 #include "line-of-score.hh"
  11 #include "debug.hh"
  12 #include "item.hh"
  13 #include "score-engraver.hh"
  14 #include "p-score.hh"
  15 #include "musical-request.hh"
  16 #include "score-column.hh"
  17 #include "command-request.hh"
  18 #include "paper-def.hh"
  19
  20
  21 Score_engraver::Score_engraver()
  22 {
  23   break_penalty_i_ = 0;
  24   scoreline_l_ =0;
  25   command_column_l_ =0;
  26   musical_column_l_ =0;
  27   breaks_i_ =0;
  28   pscore_p_ = 0;
  29 }
  30
  31 void
  32 Score_engraver::prepare (Moment w)
  33 {
  34   Global_translator::prepare (w);
  35   set_columns (new Score_column (w),  new Score_column (w));
  36
  37   break_penalty_i_ = 0;
  38   post_move_processing();
  39 }
  40
  41 void
  42 Score_engraver::finish()
  43 {
  44   if ((breaks_i_%8))
  45     *mlog << "[" << breaks_i_ << "]" << flush;
  46
  47   check_removal();
  48   removal_processing();
  49 }
  50
  51 void
  52 Score_engraver::do_creation_processing()
  53 {
  54   scoreline_l_ = pscore_p_->line_l_;
  55   scoreline_l_->set_bounds(LEFT,get_staff_info().command_pcol_l ());
  56   command_column_l_->breakable_b_ = true;
  57   Engraver_group_engraver::do_creation_processing();
  58 }
  59
  60 void
  61 Score_engraver::do_removal_processing()
  62 {
  63   Engraver_group_engraver::do_removal_processing();
  64   scoreline_l_->set_bounds(RIGHT,get_staff_info().command_pcol_l ());
  65   command_column_l_->breakable_b_ = true;
  66
  67   typeset_all ();
  68   set_columns (0,0);
  69 }
  70
  71 void
  72 Score_engraver::process()
  73 {
  74   process_requests();
  75   do_announces();
  76   pre_move_processing();
  77   check_removal();
  78 }
  79
  80 void
  81 Score_engraver::announce_element (Score_element_info info)
  82 {
  83   announce_info_arr_.push (info);
  84   info.origin_grav_l_arr_.push (this);
  85 }
  86
  87 void
  88 Score_engraver::do_announces()
  89 {
  90   /* All elements are propagated to the top upon announcement. If
  91      something was created during one run of
  92      Engraver_group_engraver::do_announces, then
  93      announce_info_arr_.size() will be nonzero again
  94
  95      */
  96   while (announce_info_arr_.size())
  97     {
  98       for (int i=0; i < announce_info_arr_.size(); i++)
  99         /*
 100           TODO
 101
 102           More subtle spacing
 103           */
 104         if (announce_info_arr_[i].req_l_)
 105           {
 106             Musical_req *m = announce_info_arr_[i].req_l_->access_Musical_req ();
 107             if (m && m->access_Rhythmic_req ())
 108               {
 109                 musical_column_l_->add_duration (m->duration());
 110               }
 111           }
 112       Engraver_group_engraver::do_announces();
 113     }
 114 }
 115
 116
 117 void
 118 Score_engraver::typeset_element (Score_element *elem_p)
 119 {
 120   elem_p_arr_.push(elem_p);
 121 }
 122
 123 void
 124 Score_engraver::typeset_all()
 125 {
 126   for  (int i =0; i < elem_p_arr_.size(); i++)
 127     {
 128       Score_element * elem_p = elem_p_arr_[i];
 129       if (elem_p->access_Spanner ())
 130         {
 131           Spanner *s = elem_p->access_Spanner ();
 132           pscore_p_->typeset_unbroken_spanner (s);
 133
 134
 135
 136                   /*
 137             do something sensible if spanner not
 138             spanned on 2 items.
 139            */
 140           Direction d = LEFT;
 141           do {
 142             if (!s->spanned_drul_[d])
 143               {
 144                 s->set_bounds(d, command_column_l_);
 145                 ::warning (_f ("Unbound spanner `%s\'", s->name ()));
 146               }
 147           } while (flip(&d) != LEFT);
 148         }
 149       else
 150         {
 151           Item *item_p = elem_p->access_Item ();
 152           pscore_p_->typeset_element (item_p);
 153           if (!item_p->axis_group_l_a_[X_AXIS]) {
 154             if (item_p->breakable_b_)
 155               command_column_l_->add_element(item_p);
 156             else
 157               musical_column_l_->add_element(item_p);
 158           }
 159         }
 160       scoreline_l_->add_element (elem_p);
 161     }
 162   elem_p_arr_.clear();
 163 }
 164
 165 void
 166 Score_engraver::do_pre_move_processing()
 167 {
 168   if (break_penalty_i_ > Break_req::DISALLOW)
 169     {
 170       get_staff_info().command_pcol_l ()-> breakable_b_ = true;
 171       breaks_i_ ++;
 172       if (! (breaks_i_%8))
 173         *mlog << "[" << breaks_i_ << "]" << flush;
 174     }
 175   // this generates all items.
 176   Engraver_group_engraver::do_pre_move_processing();
 177
 178   typeset_all();
 179 }
 180
 181 void
 182 Score_engraver::set_columns (Score_column *new_command_l,
 183                              Score_column *new_musical_l)
 184 {
 185   if (command_column_l_ && command_column_l_->linked_b())
 186     {
 187       pscore_p_->add_column (command_column_l_);
 188       scoreline_l_->add_element (command_column_l_);
 189     }
 190   else
 191     {
 192       delete command_column_l_ ;
 193       command_column_l_ =0;
 194     }
 195   if (new_command_l)
 196     {
 197       command_column_l_ = new_command_l;
 198       command_column_l_->musical_b_ = false;
 199     }
 200   if (musical_column_l_ && musical_column_l_->linked_b())
 201     {
 202       pscore_p_->add_column (musical_column_l_);
 203       scoreline_l_->add_element (musical_column_l_);
 204     }
 205   else
 206     {
 207       delete musical_column_l_;
 208       musical_column_l_ = 0;
 209     }
 210
 211   if (new_musical_l)
 212     {
 213       musical_column_l_ = new_musical_l;
 214       musical_column_l_->musical_b_ = true;
 215     }
 216 }
 217
 218
 219 Staff_info
 220 Score_engraver::get_staff_info() const
 221 {
 222   Staff_info inf = Engraver_group_engraver::get_staff_info();
 223
 224   inf.command_l_ = command_column_l_;
 225   inf.musical_l_ = musical_column_l_;
 226
 227   return inf;
 228 }
 229
 230
 231
 232 Music_output*
 233 Score_engraver::get_output_p ()
 234 {
 235   Music_output * o = pscore_p_;
 236   pscore_p_=0;
 237   return o;
 238 }
 239
 240 bool
 241 Score_engraver::do_try_request (Request*r)
 242 {
 243   bool gotcha = Engraver_group_engraver::do_try_request (r);
 244
 245   if (gotcha || !r->access_Command_req ())
 246     return gotcha;
 247
 248   Command_req * c = r->access_Command_req ();
 249   if (c->access_Break_req ())
 250     {
 251       Break_req* b = (Break_req*)c->access_Break_req ();
 252       if (b->penalty_i_ <= Break_req::DISALLOW)
 253         break_penalty_i_ = b->penalty_i_;
 254       else if (b->penalty_i_ >= Break_req::FORCE)
 255         {
 256           command_column_l_->break_penalty_i_ = b->penalty_i_;
 257           gotcha = true;
 258         }
 259     }
 260   return gotcha;
 261 }
 262
 263 IMPLEMENT_IS_TYPE_B1(Score_engraver,Engraver_group_engraver);
 264 ADD_THIS_TRANSLATOR(Score_engraver);
 265
 266 void
 267 Score_engraver::do_add_processing ()
 268 {
 269   Translator_group::do_add_processing ();
 270   assert (output_def_l_->is_type_b (Paper_def::static_name ()));
 271   assert (!daddy_trans_l_);
 272   pscore_p_ = new Paper_score;
 273   pscore_p_->paper_l_ = (Paper_def*)output_def_l_;
 274 }