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--1999 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 /*
  53   use start/finish?
  54  */
  55 void
  56 Score_engraver::do_creation_processing ()
  57 {
  58   scoreline_l_ = pscore_p_->line_l_;
  59   scoreline_l_->set_bounds(LEFT,command_column_l_);
  60   command_column_l_->set_elt_property (breakable_scm_sym, SCM_BOOL_T);
  61
  62   Engraver_group_engraver::do_creation_processing();
  63 }
  64
  65
  66 void
  67 Score_engraver::do_removal_processing()
  68 {
  69   Engraver_group_engraver::do_removal_processing();
  70   scoreline_l_->set_bounds(RIGHT,command_column_l_);
  71   command_column_l_->set_elt_property (breakable_scm_sym, SCM_BOOL_T);
  72
  73   typeset_all ();
  74   set_columns (0,0);
  75 }
  76
  77 void
  78 Score_engraver::process()
  79 {
  80   process_requests();
  81   do_announces();
  82   pre_move_processing();
  83   check_removal();
  84 }
  85
  86 void
  87 Score_engraver::announce_element (Score_element_info info)
  88 {
  89   announce_info_arr_.push (info);
  90   info.origin_trans_l_arr_.push (this);
  91
  92   if (Spanner *s = dynamic_cast <Spanner *> (info.elem_l_))
  93     pscore_p_->typeset_unbroken_spanner (s);
  94   else if (Item *i = dynamic_cast<Item*> (info.elem_l_))
  95     pscore_p_->typeset_element (i);
  96 }
  97
  98 /* All elements are propagated to the top upon announcement. If
  99    something was created during one run of
 100    Engraver_group_engraver::do_announces, then
 101    announce_info_arr_.size() will be nonzero again
 102 */
 103 /* junkme? Done by Engraver_group_engraver::do_announces ()?
 104  */
 105
 106 void
 107 Score_engraver::do_announces()
 108 {
 109   while (announce_info_arr_.size())
 110     Engraver_group_engraver::do_announces();
 111 }
 112
 113
 114 void
 115 Score_engraver::typeset_element (Score_element *elem_p)
 116 {
 117   elem_p_arr_.push (elem_p);
 118 }
 119
 120
 121 void
 122 Score_engraver::typeset_all()
 123 {
 124   for  (int i =0; i < elem_p_arr_.size(); i++)
 125     {
 126       Score_element * elem_p = elem_p_arr_[i];
 127       elem_p->add_processing ();
 128       if (Spanner *s = dynamic_cast <Spanner *> (elem_p))
 129         {
 130             /*
 131             do something sensible if spanner not
 132             spanned on 2 items.
 133            */
 134           Direction d = LEFT;
 135           do {
 136             if (!s->spanned_drul_[d])
 137               {
 138                 s->set_bounds(d, command_column_l_);
 139                 ::warning (_f ("Unbound spanner `%s\'", classname(s)));
 140               }
 141           } while (flip(&d) != LEFT);
 142         }
 143       else
 144         {
 145           Item *item_p = dynamic_cast <Item *> (elem_p);
 146
 147           if (!item_p->parent_l (X_AXIS))
 148             {
 149               bool br = (item_p->remove_elt_property (breakable_scm_sym) != SCM_BOOL_F);
 150               if (br)
 151                 command_column_l_->add_element(item_p);
 152               else
 153                 musical_column_l_->add_element(item_p);
 154             }
 155         }
 156       if (!elem_p->dim_cache_[Y_AXIS]->parent_l_)
 157         scoreline_l_->add_element (elem_p);
 158     }
 159   elem_p_arr_.clear();
 160 }
 161
 162 void
 163 Score_engraver::do_pre_move_processing()
 164 {
 165   if (break_penalty_i_ > Break_req::DISALLOW)
 166     {
 167       command_column_l_->set_elt_property (breakable_scm_sym, SCM_BOOL_T);
 168       breaks_i_ ++;
 169       if (! (breaks_i_%8))
 170         *mlog << "[" << breaks_i_ << "]" << flush;
 171     }
 172   // this generates all items.
 173   Engraver_group_engraver::do_pre_move_processing();
 174
 175   typeset_all();
 176 }
 177
 178 void
 179 Score_engraver::set_columns (Score_column *new_command_l,
 180                              Score_column *new_musical_l)
 181 {
 182   if (command_column_l_ && command_column_l_->linked_b())
 183     {
 184       pscore_p_->add_column (command_column_l_);
 185       scoreline_l_->add_column (command_column_l_);
 186     }
 187   else
 188     {
 189       delete command_column_l_ ;
 190       command_column_l_ =0;
 191     }
 192   if (new_command_l)
 193     command_column_l_ = new_command_l;
 194
 195   if (musical_column_l_ && musical_column_l_->linked_b())
 196     {
 197       pscore_p_->add_column (musical_column_l_);
 198       scoreline_l_->add_column (musical_column_l_);
 199     }
 200   else
 201     {
 202       delete musical_column_l_;
 203       musical_column_l_ = 0;
 204     }
 205
 206   if (new_musical_l)
 207     {
 208       musical_column_l_ = new_musical_l;
 209     }
 210 }
 211
 212
 213 Staff_info
 214 Score_engraver::get_staff_info() const
 215 {
 216   Staff_info inf = Engraver_group_engraver::get_staff_info();
 217
 218   inf.command_l_ = command_column_l_;
 219   inf.musical_l_ = musical_column_l_;
 220
 221   return inf;
 222 }
 223
 224
 225 Music_output*
 226 Score_engraver::get_output_p ()
 227 {
 228   Music_output * o = pscore_p_;
 229   pscore_p_=0;
 230   return o;
 231 }
 232
 233 bool
 234 Score_engraver::do_try_music (Music*r)
 235 {
 236   bool gotcha = Engraver_group_engraver::do_try_music (r);
 237
 238   if (!gotcha)
 239     {
 240       /*
 241         UGH! THIS IS NOT SYMMETRIC. CLEAN ME UP!
 242        */
 243       if (Break_req* b = dynamic_cast<Break_req *> (r))
 244         {
 245           gotcha = true;
 246           if (b->penalty_i_ <= Break_req::DISALLOW)
 247             break_penalty_i_ = b->penalty_i_;
 248           else if (b->penalty_i_ >= Break_req::FORCE)
 249             command_column_l_->break_penalty_i_ = b->penalty_i_;
 250         }
 251     }
 252    return gotcha;
 253 }
 254
 255 void
 256 Score_engraver::forbid_breaks ()
 257 {
 258   break_penalty_i_ = Break_req::DISALLOW;
 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_ = dynamic_cast<Paper_def*>(output_def_l_);
 271 }