lily/score-grav.cc

   1 /*
   2   score-grav.cc -- implement Score_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "super-elem.hh"
  10 #include "scoreline.hh"
  11 #include "debug.hh"
  12 #include "score-elem.hh"
  13 #include "bar.hh"               // needed for Bar::static_name
  14 #include "score-grav.hh"
  15 #include "p-col.hh"
  16 #include "p-score.hh"
  17 #include "score.hh"
  18 #include "musical-request.hh"
  19 #include "score-column.hh"
  20 #include "command-request.hh"
  21
  22
  23 void
  24 Score_engraver::set_score (Score *s)
  25 {
  26   Global_translator::set_score (s);
  27   scoreline_l_ = s->pscore_p_->super_elem_l_->line_of_score_l_;
  28 }
  29
  30 Score_engraver::Score_engraver()
  31 {
  32   disallow_break_b_ = false;
  33   scoreline_l_ =0;
  34   command_column_l_ =0;
  35   musical_column_l_ =0;
  36   breaks_i_ =0;
  37 }
  38
  39
  40 void
  41 Score_engraver::prepare (Moment w)
  42 {
  43   set_columns (new Score_column (w),  new Score_column (w));
  44
  45
  46   disallow_break_b_ = false;
  47   post_move_processing();
  48 }
  49
  50 void
  51 Score_engraver::finish()
  52 {
  53   if ( (breaks_i_%8))
  54             *mlog << "[" << breaks_i_ << "]" << flush;
  55
  56   check_removal();
  57   removal_processing();
  58 }
  59
  60 void
  61 Score_engraver::do_creation_processing()
  62 {
  63   scoreline_l_->left_col_l_ = get_staff_info().command_pcol_l ();
  64   scoreline_l_->left_col_l_ ->set_breakable();
  65   Engraver_group_engraver::do_creation_processing();
  66 }
  67
  68 void
  69 Score_engraver::do_removal_processing()
  70 {
  71   Engraver_group_engraver::do_removal_processing();
  72   scoreline_l_->right_col_l_ = get_staff_info().command_pcol_l ();
  73   scoreline_l_->right_col_l_ ->set_breakable();
  74   typeset_all();
  75   set_columns (0,0);
  76 }
  77
  78 void
  79 Score_engraver::process()
  80 {
  81         process_requests();
  82         do_announces();
  83         pre_move_processing();
  84         check_removal();
  85 }
  86
  87 void
  88 Score_engraver::announce_element (Score_elem_info info)
  89 {
  90   announce_info_arr_.push (info);
  91   info.origin_grav_l_arr_.push (this);
  92
  93 }
  94 void
  95 Score_engraver::do_announces()
  96 {
  97   /* All elements are propagated to the top upon announcement. If
  98     something was created during one run of
  99     Engraver_group_engraver::do_announces, then
 100     announce_info_arr_.size() will be nonzero again
 101
 102     */
 103   while (announce_info_arr_.size())
 104     {
 105         for (int i=0; i <announce_info_arr_.size(); i++)
 106             /*
 107               TODO
 108
 109               More subtle spacing
 110              */
 111             if (announce_info_arr_[i].req_l_)
 112               {
 113                 Musical_req *m = announce_info_arr_[i].req_l_->musical();
 114                 if (m && m->rhythmic())
 115                   {
 116                     musical_column_l_->add_duration (m->duration());
 117                   }
 118               }
 119         Engraver_group_engraver::do_announces();
 120     }
 121 }
 122
 123
 124 void
 125 Score_engraver::typeset_element (Score_elem *elem_p)
 126 {
 127   if  ( elem_p->item() && elem_p->item ()->breakable_b_)
 128     {
 129         nobreak_item_p_arr_.push (elem_p->item());
 130     }
 131   else
 132         musical_item_p_arr_.push (elem_p);
 133 }
 134
 135 void
 136 Score_engraver::typeset_all()
 137 {
 138   PCol * c= get_staff_info().command_pcol_l ();
 139   Paper_score *ps_l = score_l_->pscore_p_;
 140
 141   for  (int i =0; i < nobreak_item_p_arr_.size(); i++)
 142     {
 143         ps_l->typeset_item (nobreak_item_p_arr_[i], c);
 144
 145         // should get rid of this.. .
 146         scoreline_l_->add_dependency (nobreak_item_p_arr_[i]);
 147     }
 148   nobreak_item_p_arr_.clear();
 149
 150   for (int i=0; i < musical_item_p_arr_.size(); i++)
 151     {
 152         PCol* m = get_staff_info().musical_pcol_l ();
 153         Score_elem *elem_p = musical_item_p_arr_[i];
 154
 155         scoreline_l_->add (elem_p);
 156         if (elem_p->spanner())
 157           {
 158             ps_l->typeset_unbroken_spanner (elem_p->spanner());
 159           }
 160         else if (elem_p->item())
 161           {
 162             ps_l->typeset_item (elem_p->item(), m);
 163           }
 164         else
 165             assert (false);
 166     }
 167   musical_item_p_arr_.clear();
 168 }
 169
 170
 171 void
 172 Score_engraver::do_pre_move_processing()
 173 {
 174   if ( !disallow_break_b_)
 175     {
 176         get_staff_info().command_pcol_l ()->set_breakable ();
 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_->used_b())
 192         score_l_->pscore_p_->add (command_column_l_);
 193   else
 194     {
 195         delete command_column_l_ ;
 196         command_column_l_ =0;
 197     }
 198   if (new_command_l)
 199     {
 200         command_column_l_ = new_command_l;
 201         command_column_l_->musical_b_ = false;
 202     }
 203   if ( musical_column_l_ && musical_column_l_->used_b())
 204         score_l_->pscore_p_->add (musical_column_l_);
 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;
 223
 224   inf.command_l_ = command_column_l_;
 225   inf.musical_l_ = musical_column_l_;
 226   return inf;
 227 }
 228
 229 Paper_def*
 230 Score_engraver::paper()const
 231 {
 232   return score_l_->paper_p_;
 233 }
 234
 235
 236
 237 bool
 238 Score_engraver::do_try_request (Request*r)
 239 {
 240   bool gotcha = Engraver_group_engraver::do_try_request (r);
 241   if ( !gotcha && r->command() && r->command ()->disallowbreak ())
 242             disallow_break_b_ = true;
 243   return gotcha;
 244 }
 245
 246 IMPLEMENT_IS_TYPE_B1(Score_engraver,Engraver_group_engraver);
 247 ADD_THIS_ENGRAVER(Score_engraver);
 248