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             if (Rhythmic_req *rq = dynamic_cast <Rhythmic_req *> (announce_info_arr_[i].req_l_))
 108               {
 109                 musical_column_l_->add_duration (rq->duration());
 110               }
 111           }
 112       Engraver_group_engraver::do_announces();
 113     }
 114 }
 115
 116
 117 void
 118 Score_engraver::typeset_element (Score_element *elem_p)
 119 {
 120   elem_p_arr_.push (elem_p);
 121 }
 122
 123
 124 void
 125 Score_engraver::typeset_all()
 126 {
 127   for  (int i =0; i < elem_p_arr_.size(); i++)
 128     {
 129       Score_element * elem_p = elem_p_arr_[i];
 130       if (Spanner *s = dynamic_cast <Spanner *> (elem_p))
 131         {
 132           pscore_p_->typeset_unbroken_spanner (s);
 133
 134             /*
 135             do something sensible if spanner not
 136             spanned on 2 items.
 137            */
 138           Direction d = LEFT;
 139           do {
 140             if (!s->spanned_drul_[d])
 141               {
 142                 s->set_bounds(d, command_column_l_);
 143                 ::warning (_f ("Unbound spanner `%s\'", classname(s)));
 144               }
 145           } while (flip(&d) != LEFT);
 146         }
 147       else
 148         {
 149           Item *item_p = dynamic_cast <Item *> (elem_p);
 150           pscore_p_->typeset_element (item_p);
 151           if (!item_p->parent_l (X_AXIS))
 152             {
 153               if (item_p->breakable_b_)
 154                 command_column_l_->add_element(item_p);
 155               else
 156                 musical_column_l_->add_element(item_p);
 157             }
 158         }
 159       scoreline_l_->add_element (elem_p);
 160     }
 161   elem_p_arr_.clear();
 162 }
 163
 164 void
 165 Score_engraver::do_pre_move_processing()
 166 {
 167   if (break_penalty_i_ > Break_req::DISALLOW)
 168     {
 169       get_staff_info().command_pcol_l ()-> breakable_b_ = true;
 170       breaks_i_ ++;
 171       if (! (breaks_i_%8))
 172         *mlog << "[" << breaks_i_ << "]" << flush;
 173     }
 174   // this generates all items.
 175   Engraver_group_engraver::do_pre_move_processing();
 176
 177   typeset_all();
 178 }
 179
 180 void
 181 Score_engraver::set_columns (Score_column *new_command_l,
 182                              Score_column *new_musical_l)
 183 {
 184   if (command_column_l_ && command_column_l_->linked_b())
 185     {
 186       pscore_p_->add_column (command_column_l_);
 187       scoreline_l_->add_element (command_column_l_);
 188     }
 189   else
 190     {
 191       delete command_column_l_ ;
 192       command_column_l_ =0;
 193     }
 194   if (new_command_l)
 195     {
 196       command_column_l_ = new_command_l;
 197       command_column_l_->musical_b_ = false;
 198     }
 199   if (musical_column_l_ && musical_column_l_->linked_b())
 200     {
 201       pscore_p_->add_column (musical_column_l_);
 202       scoreline_l_->add_element (musical_column_l_);
 203     }
 204   else
 205     {
 206       delete musical_column_l_;
 207       musical_column_l_ = 0;
 208     }
 209
 210   if (new_musical_l)
 211     {
 212       musical_column_l_ = new_musical_l;
 213       musical_column_l_->musical_b_ = true;
 214     }
 215 }
 216
 217
 218 Staff_info
 219 Score_engraver::get_staff_info() const
 220 {
 221   Staff_info inf = Engraver_group_engraver::get_staff_info();
 222
 223   inf.command_l_ = command_column_l_;
 224   inf.musical_l_ = musical_column_l_;
 225
 226   return inf;
 227 }
 228
 229
 230 Music_output*
 231 Score_engraver::get_output_p ()
 232 {
 233   Music_output * o = pscore_p_;
 234   pscore_p_=0;
 235   return o;
 236 }
 237
 238 bool
 239 Score_engraver::do_try_music (Music*r)
 240 {
 241   bool gotcha = Engraver_group_engraver::do_try_music (r);
 242
 243   if (!gotcha)
 244     {
 245       if (Break_req* b = dynamic_cast<Break_req *> (r))
 246         {
 247           if (b->penalty_i_ <= Break_req::DISALLOW)
 248             break_penalty_i_ = b->penalty_i_;
 249           else if (b->penalty_i_ >= Break_req::FORCE)
 250             {
 251               command_column_l_->break_penalty_i_ = b->penalty_i_;
 252               gotcha = true;
 253             }
 254         }
 255     }
 256    return gotcha;
 257
 258 }
 259
 260
 261 ADD_THIS_TRANSLATOR(Score_engraver);
 262
 263 void
 264 Score_engraver::do_add_processing ()
 265 {
 266   Translator_group::do_add_processing ();
 267   assert (dynamic_cast<Paper_def *> (output_def_l_));
 268   assert (!daddy_trans_l_);
 269   pscore_p_ = new Paper_score;
 270   pscore_p_->paper_l_ = (Paper_def*)output_def_l_;
 271 }