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 "graphical-lisp-element.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_element (Graphical_lisp_element* elem_p)
 126 {
 127   *mlog << "not typesetting: " << elem_p->static_name () << "\n";
 128   delete elem_p;
 129 }
 130
 131 void
 132 Score_engraver::typeset_all()
 133 {
 134   for  (int i =0; i < elem_p_arr_.size(); i++)
 135     {
 136       Score_element * elem_p = elem_p_arr_[i];
 137       if (elem_p->access_Spanner ())
 138         {
 139           Spanner *s = elem_p->access_Spanner ();
 140           pscore_p_->typeset_unbroken_spanner (s);
 141
 142             /*
 143             do something sensible if spanner not
 144             spanned on 2 items.
 145            */
 146           Direction d = LEFT;
 147           do {
 148             if (!s->spanned_drul_[d])
 149               {
 150                 s->set_bounds(d, command_column_l_);
 151                 ::warning (_f ("Unbound spanner `%s\'", s->name ()));
 152               }
 153           } while (flip(&d) != LEFT);
 154         }
 155       else
 156         {
 157           Item *item_p = elem_p->access_Item ();
 158           pscore_p_->typeset_element (item_p);
 159           if (!item_p->axis_group_l_a_[X_AXIS]) {
 160             if (item_p->breakable_b_)
 161               command_column_l_->add_element(item_p);
 162             else
 163               musical_column_l_->add_element(item_p);
 164           }
 165         }
 166       scoreline_l_->add_element (elem_p);
 167     }
 168   elem_p_arr_.clear();
 169 }
 170
 171 void
 172 Score_engraver::do_pre_move_processing()
 173 {
 174   if (break_penalty_i_ > Break_req::DISALLOW)
 175     {
 176       get_staff_info().command_pcol_l ()-> breakable_b_ = true;
 177       breaks_i_ ++;
 178       if (! (breaks_i_%8))
 179         *mlog << "[" << breaks_i_ << "]" << flush;
 180     }
 181   // this generates all items.
 182   Engraver_group_engraver::do_pre_move_processing();
 183
 184   typeset_all();
 185 }
 186
 187 void
 188 Score_engraver::set_columns (Score_column *new_command_l,
 189                              Score_column *new_musical_l)
 190 {
 191   if (command_column_l_ && command_column_l_->linked_b())
 192     {
 193       pscore_p_->add_column (command_column_l_);
 194       scoreline_l_->add_element (command_column_l_);
 195     }
 196   else
 197     {
 198       delete command_column_l_ ;
 199       command_column_l_ =0;
 200     }
 201   if (new_command_l)
 202     {
 203       command_column_l_ = new_command_l;
 204       command_column_l_->musical_b_ = false;
 205     }
 206   if (musical_column_l_ && musical_column_l_->linked_b())
 207     {
 208       pscore_p_->add_column (musical_column_l_);
 209       scoreline_l_->add_element (musical_column_l_);
 210     }
 211   else
 212     {
 213       delete musical_column_l_;
 214       musical_column_l_ = 0;
 215     }
 216
 217   if (new_musical_l)
 218     {
 219       musical_column_l_ = new_musical_l;
 220       musical_column_l_->musical_b_ = true;
 221     }
 222 }
 223
 224
 225 Staff_info
 226 Score_engraver::get_staff_info() const
 227 {
 228   Staff_info inf = Engraver_group_engraver::get_staff_info();
 229
 230   inf.command_l_ = command_column_l_;
 231   inf.musical_l_ = musical_column_l_;
 232
 233   return inf;
 234 }
 235
 236
 237 Music_output*
 238 Score_engraver::get_output_p ()
 239 {
 240   Music_output * o = pscore_p_;
 241   pscore_p_=0;
 242   return o;
 243 }
 244
 245 bool
 246 Score_engraver::do_try_request (Request*r)
 247 {
 248   bool gotcha = Engraver_group_engraver::do_try_request (r);
 249
 250   if (gotcha || !r->access_Command_req ())
 251     return gotcha;
 252
 253   Command_req * c = r->access_Command_req ();
 254   if (c->access_Break_req ())
 255     {
 256       Break_req* b = (Break_req*)c->access_Break_req ();
 257       if (b->penalty_i_ <= Break_req::DISALLOW)
 258         break_penalty_i_ = b->penalty_i_;
 259       else if (b->penalty_i_ >= Break_req::FORCE)
 260         {
 261           command_column_l_->break_penalty_i_ = b->penalty_i_;
 262           gotcha = true;
 263         }
 264     }
 265   return gotcha;
 266 }
 267
 268 IMPLEMENT_IS_TYPE_B1(Score_engraver,Engraver_group_engraver);
 269 ADD_THIS_TRANSLATOR(Score_engraver);
 270
 271 void
 272 Score_engraver::do_add_processing ()
 273 {
 274   Translator_group::do_add_processing ();
 275   assert (output_def_l_->is_type_b (Paper_def::static_name ()));
 276   assert (!daddy_trans_l_);
 277   pscore_p_ = new Paper_score;
 278   pscore_p_->paper_l_ = (Paper_def*)output_def_l_;
 279 }