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 Score_engraver::Score_engraver()
  24 {
  25   disallow_break_b_ = false;
  26   scoreline_l_ =0;
  27   command_column_l_ =0;
  28   musical_column_l_ =0;
  29   breaks_i_ =0;
  30   pscore_p_ = 0;
  31 }
  32
  33 void
  34 Score_engraver::prepare (Moment w)
  35 {
  36   set_columns (new Score_column (w),  new Score_column (w));
  37
  38   disallow_break_b_ = false;
  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_->super_elem_l_->line_of_score_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_elem_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_->musical();
 108             if (m && m->rhythmic())
 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_elem *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_elem * elem_p = elem_p_arr_[i];
 130       if (elem_p->spanner())
 131           pscore_p_->typeset_unbroken_spanner (elem_p->spanner());
 132       else
 133         {
 134           Item *item_p = elem_p->item();
 135           pscore_p_->typeset_element (item_p);
 136           if (!item_p->axis_group_l_a_[X_AXIS]) {
 137             if (item_p->breakable_b_)
 138               command_column_l_->add_element(item_p);
 139             else
 140               musical_column_l_->add_element(item_p);
 141           }
 142         }
 143       scoreline_l_->add (elem_p);
 144     }
 145   elem_p_arr_.clear();
 146 }
 147
 148 void
 149 Score_engraver::do_pre_move_processing()
 150 {
 151   if (!disallow_break_b_)
 152     {
 153       get_staff_info().command_pcol_l ()-> breakable_b_ = true;
 154       breaks_i_ ++;
 155       if (! (breaks_i_%8))
 156         *mlog << "[" << breaks_i_ << "]" << flush;
 157     }
 158   // this generates all items.
 159   Engraver_group_engraver::do_pre_move_processing();
 160
 161   typeset_all();
 162 }
 163
 164 void
 165 Score_engraver::set_columns (Score_column *new_command_l,
 166                              Score_column *new_musical_l)
 167 {
 168   if (command_column_l_ && command_column_l_->linked_b())
 169     {
 170       pscore_p_->add_column (command_column_l_);
 171       scoreline_l_->add (command_column_l_);
 172     }
 173   else
 174     {
 175       delete command_column_l_ ;
 176       command_column_l_ =0;
 177     }
 178   if (new_command_l)
 179     {
 180       command_column_l_ = new_command_l;
 181       command_column_l_->musical_b_ = false;
 182     }
 183   if (musical_column_l_ && musical_column_l_->linked_b())
 184     {
 185       pscore_p_->add_column (musical_column_l_);
 186       scoreline_l_->add (musical_column_l_);
 187     }
 188   else
 189     {
 190       delete musical_column_l_;
 191       musical_column_l_ = 0;
 192     }
 193
 194   if (new_musical_l)
 195     {
 196       musical_column_l_ = new_musical_l;
 197       musical_column_l_->musical_b_ = true;
 198     }
 199 }
 200
 201
 202 Staff_info
 203 Score_engraver::get_staff_info() const
 204 {
 205   Staff_info inf = Engraver_group_engraver::get_staff_info();
 206
 207   inf.command_l_ = command_column_l_;
 208   inf.musical_l_ = musical_column_l_;
 209
 210   return inf;
 211 }
 212
 213 Paper_def*
 214 Score_engraver::paper() const
 215 {
 216   return pscore_p_->paper_l_;
 217 }
 218
 219
 220 Music_output*
 221 Score_engraver::get_output_p ()
 222 {
 223   Music_output * o = pscore_p_;
 224   pscore_p_=0;
 225   return o;
 226 }
 227
 228 bool
 229 Score_engraver::do_try_request (Request*r)
 230 {
 231   bool gotcha = Engraver_group_engraver::do_try_request (r);
 232   if (!gotcha && r->command() && r->command ()->disallowbreak ())
 233     disallow_break_b_ = true;
 234   return gotcha;
 235 }
 236
 237 IMPLEMENT_IS_TYPE_B1(Score_engraver,Engraver_group_engraver);
 238 ADD_THIS_ENGRAVER(Score_engraver);
 239
 240