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 #include "main.hh"
  20
  21
  22 Score_engraver::Score_engraver()
  23 {
  24   break_penalty_i_ = 0;
  25   scoreline_l_ =0;
  26   command_column_l_ =0;
  27   musical_column_l_ =0;
  28   breaks_i_ =0;
  29   pscore_p_ = 0;
  30 }
  31
  32 void
  33 Score_engraver::prepare (Moment w)
  34 {
  35   Global_translator::prepare (w);
  36   set_columns (new Score_column (w),  new Score_column (w));
  37
  38   break_penalty_i_ = 0;
  39   post_move_processing();
  40 }
  41
  42 void
  43 Score_engraver::finish()
  44 {
  45   if ((breaks_i_%8))
  46     *mlog << "[" << breaks_i_ << "]" << flush;
  47
  48   check_removal();
  49   removal_processing();
  50 }
  51
  52 void
  53 Score_engraver::do_creation_processing()
  54 {
  55   scoreline_l_ = pscore_p_->line_l_;
  56   scoreline_l_->set_bounds(LEFT,get_staff_info().command_pcol_l ());
  57   command_column_l_->breakable_b_ = true;
  58   Engraver_group_engraver::do_creation_processing();
  59 }
  60
  61 void
  62 Score_engraver::do_removal_processing()
  63 {
  64   Engraver_group_engraver::do_removal_processing();
  65   scoreline_l_->set_bounds(RIGHT,get_staff_info().command_pcol_l ());
  66   command_column_l_->breakable_b_ = true;
  67
  68   typeset_all ();
  69   set_columns (0,0);
  70 }
  71
  72 void
  73 Score_engraver::process()
  74 {
  75   process_requests();
  76   do_announces();
  77   pre_move_processing();
  78   check_removal();
  79 }
  80
  81 void
  82 Score_engraver::announce_element (Score_element_info info)
  83 {
  84   announce_info_arr_.push (info);
  85   info.origin_grav_l_arr_.push (this);
  86 }
  87
  88 void
  89 Score_engraver::do_announces()
  90 {
  91   /* All elements are propagated to the top upon announcement. If
  92      something was created during one run of
  93      Engraver_group_engraver::do_announces, then
  94      announce_info_arr_.size() will be nonzero again
  95
  96      */
  97   while (announce_info_arr_.size())
  98     {
  99       for (int i=0; i < announce_info_arr_.size(); i++)
 100         /*
 101           TODO
 102
 103           More subtle spacing
 104           */
 105         if (announce_info_arr_[i].req_l_)
 106           {
 107             Musical_req *m = announce_info_arr_[i].req_l_->access_Musical_req ();
 108             if (m && m->access_Rhythmic_req ())
 109               {
 110                 musical_column_l_->add_duration (m->duration());
 111               }
 112           }
 113       Engraver_group_engraver::do_announces();
 114     }
 115 }
 116
 117
 118 void
 119 Score_engraver::typeset_element (Score_element *elem_p)
 120 {
 121   elem_p_arr_.push(elem_p);
 122 }
 123
 124 void
 125 Score_engraver::typeset_all()
 126 {
 127   for  (int i =0; i < elem_p_arr_.size(); i++)
 128     {
 129       Score_element * elem_p = elem_p_arr_[i];
 130       if (elem_p->access_Spanner ())
 131         {
 132           Spanner *s = elem_p->access_Spanner ();
 133           pscore_p_->typeset_unbroken_spanner (s);
 134
 135
 136
 137                   /*
 138             do something sensible if spanner not
 139             spanned on 2 items.
 140            */
 141           Direction d = LEFT;
 142           do {
 143             if (!s->spanned_drul_[d])
 144               {
 145                 s->set_bounds(d, command_column_l_);
 146                 ::warning (_f ("Unbound spanner `%s\'", s->name ()));
 147               }
 148           } while (flip(&d) != LEFT);
 149         }
 150       else
 151         {
 152           Item *item_p = elem_p->access_Item ();
 153           pscore_p_->typeset_element (item_p);
 154           if (!item_p->axis_group_l_a_[X_AXIS]) {
 155             if (item_p->breakable_b_)
 156               command_column_l_->add_element(item_p);
 157             else
 158               musical_column_l_->add_element(item_p);
 159           }
 160         }
 161       scoreline_l_->add_element (elem_p);
 162     }
 163   elem_p_arr_.clear();
 164 }
 165
 166 void
 167 Score_engraver::do_pre_move_processing()
 168 {
 169   if (break_penalty_i_ > Break_req::DISALLOW)
 170     {
 171       get_staff_info().command_pcol_l ()-> breakable_b_ = true;
 172       breaks_i_ ++;
 173       if (! (breaks_i_%8))
 174         *mlog << "[" << breaks_i_ << "]" << flush;
 175     }
 176   // this generates all items.
 177   Engraver_group_engraver::do_pre_move_processing();
 178
 179   typeset_all();
 180 }
 181
 182 void
 183 Score_engraver::set_columns (Score_column *new_command_l,
 184                              Score_column *new_musical_l)
 185 {
 186   if (command_column_l_ && command_column_l_->linked_b())
 187     {
 188       pscore_p_->add_column (command_column_l_);
 189       scoreline_l_->add_element (command_column_l_);
 190     }
 191   else
 192     {
 193       delete command_column_l_ ;
 194       command_column_l_ =0;
 195     }
 196   if (new_command_l)
 197     {
 198       command_column_l_ = new_command_l;
 199       command_column_l_->musical_b_ = false;
 200     }
 201   if (musical_column_l_ && musical_column_l_->linked_b())
 202     {
 203       pscore_p_->add_column (musical_column_l_);
 204       scoreline_l_->add_element (musical_column_l_);
 205     }
 206   else
 207     {
 208       delete musical_column_l_;
 209       musical_column_l_ = 0;
 210     }
 211
 212   if (new_musical_l)
 213     {
 214       musical_column_l_ = new_musical_l;
 215       musical_column_l_->musical_b_ = true;
 216     }
 217 }
 218
 219
 220 Staff_info
 221 Score_engraver::get_staff_info() const
 222 {
 223   Staff_info inf = Engraver_group_engraver::get_staff_info();
 224
 225   inf.command_l_ = command_column_l_;
 226   inf.musical_l_ = musical_column_l_;
 227
 228   return inf;
 229 }
 230
 231
 232
 233 Music_output*
 234 Score_engraver::get_output_p ()
 235 {
 236   Music_output * o = pscore_p_;
 237   pscore_p_=0;
 238   return o;
 239 }
 240
 241 bool
 242 Score_engraver::do_try_request (Request*r)
 243 {
 244   bool gotcha = Engraver_group_engraver::do_try_request (r);
 245
 246   if (gotcha || !r->access_Command_req ())
 247     return gotcha;
 248
 249   Command_req * c = r->access_Command_req ();
 250   if (c->access_Break_req ())
 251     {
 252       Break_req* b = (Break_req*)c->access_Break_req ();
 253       if (b->penalty_i_ <= Break_req::DISALLOW)
 254         break_penalty_i_ = b->penalty_i_;
 255       else if (b->penalty_i_ >= Break_req::FORCE)
 256         {
 257           command_column_l_->break_penalty_i_ = b->penalty_i_;
 258           gotcha = true;
 259         }
 260     }
 261   return gotcha;
 262 }
 263
 264 IMPLEMENT_IS_TYPE_B1(Score_engraver,Engraver_group_engraver);
 265 ADD_THIS_TRANSLATOR(Score_engraver);
 266
 267 void
 268 Score_engraver::do_add_processing ()
 269 {
 270   Translator_group::do_add_processing ();
 271   //assert (output_def_l_->is_type_b (Paper_def::static_name ()));
 272   // urg
 273   pscore_p_ = output_def_l_->paper_score_p ();
 274   //  assert (pscore_p_);
 275   // urg, via parser a Paper_def gets constructed
 276   // this should never happen, but can't be prevented (Paper_def can't be
 277   // abstract bo virtual_copy_cons etc.
 278   if (!pscore_p_)
 279     {
 280       printf ("\nBRAAK\n");
 281       output_def_l_ = global_paper_l->paper_l ()->clone ();
 282       //      pscore_p_ = output_def_l_->paper_score_p ();
 283       pscore_p_ = global_paper_l->paper_score_p ();
 284       pscore_p_->paper_l_ = global_paper_l->paper_l ();
 285     }
 286   else
 287     pscore_p_->paper_l_ = output_def_l_->paper_l ();
 288   assert (pscore_p_->paper_l_);
 289   assert (!daddy_trans_l_);
 290 }