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 "item.hh"
  13 #include "score-grav.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   disallow_break_b_ = false;
  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   disallow_break_b_ = false;
  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_->super_elem_l_->line_of_score_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_elem_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_->musical();
 107             if (m && m->rhythmic())
 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_elem *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_elem * elem_p = elem_p_arr_[i];
 129       if (elem_p->spanner())
 130           pscore_p_->typeset_unbroken_spanner (elem_p->spanner());
 131       else
 132         {
 133           Item *item_p = elem_p->item();
 134           pscore_p_->typeset_element (item_p);
 135           if (!item_p->axis_group_l_a_[X_AXIS]) {
 136             if (item_p->breakable_b_)
 137               command_column_l_->add_element(item_p);
 138             else
 139               musical_column_l_->add_element(item_p);
 140           }
 141         }
 142       scoreline_l_->add (elem_p);
 143     }
 144   elem_p_arr_.clear();
 145 }
 146
 147 void
 148 Score_engraver::do_pre_move_processing()
 149 {
 150   if (!disallow_break_b_)
 151     {
 152       get_staff_info().command_pcol_l ()-> breakable_b_ = true;
 153       breaks_i_ ++;
 154       if (! (breaks_i_%8))
 155         *mlog << "[" << breaks_i_ << "]" << flush;
 156     }
 157   // this generates all items.
 158   Engraver_group_engraver::do_pre_move_processing();
 159
 160   typeset_all();
 161 }
 162
 163 void
 164 Score_engraver::set_columns (Score_column *new_command_l,
 165                              Score_column *new_musical_l)
 166 {
 167   if (command_column_l_ && command_column_l_->linked_b())
 168     {
 169       pscore_p_->add_column (command_column_l_);
 170       scoreline_l_->add (command_column_l_);
 171     }
 172   else
 173     {
 174       delete command_column_l_ ;
 175       command_column_l_ =0;
 176     }
 177   if (new_command_l)
 178     {
 179       command_column_l_ = new_command_l;
 180       command_column_l_->musical_b_ = false;
 181     }
 182   if (musical_column_l_ && musical_column_l_->linked_b())
 183     {
 184       pscore_p_->add_column (musical_column_l_);
 185       scoreline_l_->add (musical_column_l_);
 186     }
 187   else
 188     {
 189       delete musical_column_l_;
 190       musical_column_l_ = 0;
 191     }
 192
 193   if (new_musical_l)
 194     {
 195       musical_column_l_ = new_musical_l;
 196       musical_column_l_->musical_b_ = true;
 197     }
 198 }
 199
 200
 201 Staff_info
 202 Score_engraver::get_staff_info() const
 203 {
 204   Staff_info inf = Engraver_group_engraver::get_staff_info();
 205
 206   inf.command_l_ = command_column_l_;
 207   inf.musical_l_ = musical_column_l_;
 208
 209   return inf;
 210 }
 211
 212
 213
 214 Music_output*
 215 Score_engraver::get_output_p ()
 216 {
 217   Music_output * o = pscore_p_;
 218   pscore_p_=0;
 219   return o;
 220 }
 221
 222 bool
 223 Score_engraver::do_try_request (Request*r)
 224 {
 225   bool gotcha = Engraver_group_engraver::do_try_request (r);
 226   if (!gotcha && r->command() && r->command ()->disallowbreak ())
 227     disallow_break_b_ = true;
 228   return gotcha;
 229 }
 230
 231 IMPLEMENT_IS_TYPE_B1(Score_engraver,Engraver_group_engraver);
 232 ADD_THIS_TRANSLATOR(Score_engraver);
 233
 234 void
 235 Score_engraver::do_add_processing ()
 236 {
 237   Translator_group::do_add_processing ();
 238   assert (output_def_l_->is_type_b (Paper_def::static_name ()));
 239   assert (!daddy_trans_l_);
 240   pscore_p_ = new Paper_score;
 241   pscore_p_->paper_l_ = (Paper_def*)output_def_l_;
 242 }