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
  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 =dynamic_cast <Musical_req *> ( announce_info_arr_[i].req_l_);
 108             if (m && dynamic_cast <Rhythmic_req *> (m))
 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
 125 void
 126 Score_engraver::typeset_all()
 127 {
 128   for  (int i =0; i < elem_p_arr_.size(); i++)
 129     {
 130       Score_element * elem_p = elem_p_arr_[i];
 131       if (dynamic_cast <Spanner *> (elem_p))
 132         {
 133           Spanner *s = dynamic_cast <Spanner *> (elem_p);
 134           pscore_p_->typeset_unbroken_spanner (s);
 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 = dynamic_cast <Item *> (elem_p);
 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 Music_output*
 232 Score_engraver::get_output_p ()
 233 {
 234   Music_output * o = pscore_p_;
 235   pscore_p_=0;
 236   return o;
 237 }
 238
 239 bool
 240 Score_engraver::do_try_request (Request*r)
 241 {
 242   bool gotcha = Engraver_group_engraver::do_try_request (r);
 243
 244   if (gotcha || !dynamic_cast <Command_req *> (r))
 245     return gotcha;
 246
 247   Command_req * c = dynamic_cast <Command_req *> (r);
 248   if (dynamic_cast <Break_req *> (c))
 249     {
 250       Break_req* b = (Break_req*)dynamic_cast <Break_req *> (c);
 251       if (b->penalty_i_ <= Break_req::DISALLOW)
 252         break_penalty_i_ = b->penalty_i_;
 253       else if (b->penalty_i_ >= Break_req::FORCE)
 254         {
 255           command_column_l_->break_penalty_i_ = b->penalty_i_;
 256           gotcha = true;
 257         }
 258     }
 259   return gotcha;
 260 }
 261
 262 IMPLEMENT_IS_TYPE_B1(Score_engraver,Engraver_group_engraver);
 263 ADD_THIS_TRANSLATOR(Score_engraver);
 264
 265 void
 266 Score_engraver::do_add_processing ()
 267 {
 268   Translator_group::do_add_processing ();
 269   assert (output_def_l_->is_type_b (Paper_def::static_name ()));
 270   assert (!daddy_trans_l_);
 271   pscore_p_ = new Paper_score;
 272   pscore_p_->paper_l_ = (Paper_def*)output_def_l_;
 273 }