]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/repeat-engraver.cc
release: 1.3.17
[lilypond.git] / lily / repeat-engraver.cc
index 174737d34fe3f67ecfa6d9af77646a84703eb616..cdea34d4b270029e74273e509b0813225f772674 100644 (file)
 #include "musical-request.hh"
 #include "multi-measure-rest.hh"
 #include "command-request.hh"
-#include "time-description.hh"
-#include "engraver-group.hh"
+#include "timing-translator.hh"
+#include "engraver-group-engraver.hh"
 #include "repeated-music.hh"
-#include "time-description.hh"
+#include "timing-translator.hh"
 #include "volta-spanner.hh"
 #include "note-column.hh"
 #include "paper-def.hh"
-
+#include "music-list.hh"
 
 ADD_THIS_TRANSLATOR (Repeat_engraver);
 
-Repeat_engraver::Repeat_engraver ()
-{
-}
-
-/*
-  urg. Way too complicated. needs redesign.
- */
 bool
 Repeat_engraver::do_try_music (Music* m)
 {
   if (Repeated_music* r = dynamic_cast<Repeated_music *> (m))
     {
-      r->unfold_b_ = get_property ("unfoldRepeats", 0).to_bool ();
-      if (r->unfold_b_)
-        return true;
-      Music_sequence* alt = r->alternative_p_;
-      Moment repeat_length_mom = r->repeat_p_->length_mom ();
-      Moment stop_mom = now_mom () + repeat_length_mom;
-      Moment alt_mom = now_mom () + repeat_length_mom;
-      if (repeat_length_mom)
+      if (repeated_music_l_)
+       return false;
+      
+      if (r->volta_fold_b_)
        {
-         for (Cons<Music> *i (alt->music_p_list_p_->head_); i && i->next_; i = i->next_)
-           {
-             stop_mom += i->car_->length_mom ();
-             if (dynamic_cast<Simultaneous_music *> (alt))
-               break;
-           }
-         repeated_music_arr_.push (r);
-         stop_mom_arr_.push (stop_mom);
+         repeated_music_l_ = r;
        }
 
-      /* 
-        Counting nested repeats, it seems safest to forbid
-        two pieces of alternative music to start at the same time.
-      */
-      for (int i = 0; i < alternative_start_mom_arr_.size (); i++)
-        if (alternative_start_mom_arr_[i] == alt_mom)
-         return false;
-
       /*
-       Coda kludge: see input/test/coda-kludge.ly
+       We acknowledge other types of unfolded music as well, to
+       get auto context selection right.
        */
-      Moment span_mom;
-      Scalar prop = get_property ("voltaSpannerDuration", 0);
-      if (prop.length_i ())
-       span_mom = prop.to_rat ();
-
-      int alt_i = r->repeats_i_ + 1 - cons_list_size_i (alt->music_p_list_p_->head_ ) >? 1;
-      for (Cons<Music> *i = alt->music_p_list_p_->head_; i ; i = i->next_)
-        {
-         alternative_music_arr_.push (i->car_);
-         alternative_start_mom_arr_.push (alt_mom);
-         if (span_mom)
-           alternative_stop_mom_arr_.push (alt_mom + span_mom);
-         else
-           alternative_stop_mom_arr_.push (alt_mom + i->car_->length_mom ());
-         String str;
-         if ((alt_i != 1) && (alt_i != r->repeats_i_) && (i == alt->music_p_list_p_->head_))
-           str = "1.-";
-         str += to_str (alt_i) + ".";
-         alt_i++;
-         alternative_str_arr_.push (str);
-         if (!dynamic_cast<Simultaneous_music *> (alt))
-           alt_mom += i->car_->length_mom ();
-       }
       return true;
+
     }
   return false;
 }
 
+/**
+ Walk through repeat music, and generate events for appropriate times.
+*/
 void
-Repeat_engraver::acknowledge_element (Score_element_info i)
+Repeat_engraver::queue_events ()
 {
-  Moment now = now_mom ();
-  if (Note_column *c = dynamic_cast<Note_column *> (i.elem_l_))
+  Music_sequence* alt = repeated_music_l_->alternatives_p_;
+  Moment walk_mom = now_mom () + repeated_music_l_->repeat_body_p_->length_mom ();
+
+  SCM novolta = get_property ("noVoltaBraces",0);
+  bool create_volta = !to_boolean (novolta);
+
+  Cons_list<Bar_create_event> becel;
+  becel.append (new Bar_create_event (now_mom (), "|:"));
+
+  if (!alt)
     {
-      for (int i = 0; i < volta_p_arr_.size (); i++)
-        if (volta_p_arr_[i] && (now >= alternative_start_mom_arr_[i]))
-         volta_p_arr_[i]->add_column (c);
-    }
-  if (Bar *c = dynamic_cast<Bar*> (i.elem_l_))
+      becel.append  (new Bar_create_event (walk_mom, ":|"));
+      becel.append  (new Bar_create_event (walk_mom, "stop"));
+   }
+  else
     {
-      for (int i = 0; i < volta_p_arr_.size (); i++)
-        if (volta_p_arr_[i] && (now >= alternative_start_mom_arr_[i]))
-         volta_p_arr_[i]->add_column (c);
+      int last_number = 0;
+      int volta_number = repeated_music_l_->repeats_i_ - alt->length_i () + 1;
+
+      /*
+       all repeat alternatives, and generate events with
+       appropriate timestamps. The volta spanner event (a number string)
+       happens at the begin of the alt. The :| bar event at the ending.
+      */
+      for (Cons<Music> *i = alt->music_p_list_p_->head_; i; i = i->next_)
+       {
+
+         /*
+           some idiot might typeset a repeat not starting on a
+           barline.  Make sure there is one.
+
+           (todo: should try to avoid line breaks?)
+         */
+         if (last_number == 0)
+           {
+             becel.append (new Bar_create_event (walk_mom, ""));
+           }
+
+         
+         if (create_volta)
+           {
+             Bar_create_event * c = new Bar_create_event (walk_mom, last_number+ 1,
+                                                          volta_number);
+             
+             if (!i->next_)
+               c->last_b_ = true;
+             
+             becel.append (c);
+             last_number = volta_number;
+             volta_number ++;
+              SCM l (get_property ("voltaSpannerDuration", 0));
+              if (SMOB_IS_TYPE_B (Moment, l))
+               {
+                 Moment vSD_mom = *SMOB_TO_TYPE (Moment,l);
+                 if ( vSD_mom < i->car_->length_mom() ) // terminate volta early ?
+                   {
+                     vSD_mom += walk_mom;
+                     c->last_b_ = true;
+                     becel.append (new Bar_create_event (vSD_mom, "stop"));
+                   }
+               }
+           }
+         walk_mom += i->car_->length_mom();
+
+         if (i->next_)
+           becel.append (new Bar_create_event (walk_mom, ":|"));
+         else
+           becel.append (new Bar_create_event (walk_mom, "stop"));
+       }
     }
-}
 
-void
-Repeat_engraver::do_removal_processing ()
-{
-  for (int i = 0; i < volta_p_arr_.size (); i++)
-    if (volta_p_arr_[i])
-      typeset_element (volta_p_arr_[i]);
+  Cons<Bar_create_event> *&tail = create_barmoments_queue_
+    ? last_cons (create_barmoments_queue_)->next_
+    : create_barmoments_queue_;
+
+  tail = becel.head_ ;
+  becel.head_ = 0;
 }
 
 void
 Repeat_engraver::do_process_requests ()
-{  
-  Moment now = now_mom ();
+{
+  if (repeated_music_l_ && !done_this_one_b_)
+    { 
+      queue_events ();
+      done_this_one_b_ = true;
+    }
+  
+  
+  Cons<Bar_create_event> * head =   create_barmoments_queue_;
+  if (!head)
+    return;
+
   Bar_engraver* bar_engraver_l = dynamic_cast <Bar_engraver*>
     (daddy_grav_l ()->get_simple_translator ("Bar_engraver"));
-  for (int i = bar_b_arr_.size (); i < repeated_music_arr_.size (); i++)
+
+  /*
+    Do all the events that need to be done now.
+  */
+  while (head && now_mom () == head->car_->when_)
     {
+      create_barmoments_queue_ = create_barmoments_queue_->next_;
+      head->next_ =0;
       if (bar_engraver_l)
-       bar_engraver_l->request_bar ("|:");
-      bar_b_arr_.push (true);
+       {
+         String t = head->car_->type_;
+         if (head->car_->bar_b_)
+           {
+             if (t == "stop" || t == ":|")
+               {
+                 end_volta_span_p_ = volta_span_p_;
+                 volta_span_p_ =0;
+               }
+
+             if (t != "stop")
+               bar_engraver_l->request_bar (t);
+             else
+               bar_engraver_l->request_bar (""); 
+           }
+         else
+           {
+             assert (!volta_span_p_);
+             volta_span_p_ = new Volta_spanner;
+             announce_element (Score_element_info (volta_span_p_,0));
+             volta_span_p_->number_str_ = t;
+             volta_span_p_->last_b_ = head->car_->last_b_;
+             // voltaSpannerDuration stuff here.
+             // other property stuff here.
+           }
+         
+       }
+      else
+       {
+         warning (_ ("No bar engraver found.  Ignoring repeats."));
+       }
+
+      delete head->car_;
+      delete head;
+
+      head = create_barmoments_queue_;
     }
-  for (int i = 0; i < bar_b_arr_.size (); i++)
+
+  assert (!head || head->car_->when_ > now_mom ());
+}  
+
+
+void
+Repeat_engraver::acknowledge_element (Score_element_info i)
+{
+  if (Note_column *c = dynamic_cast<Note_column *> (i.elem_l_))
     {
-      if (!bar_b_arr_[i] && (now >= stop_mom_arr_[i]))
-        {
-         if (bar_engraver_l)
-           bar_engraver_l->request_bar (":|");
-       }
+      if (volta_span_p_)
+       volta_span_p_->add_column (c);
+      if (end_volta_span_p_)
+       end_volta_span_p_->add_column (c);      
     }
-  for (int i = volta_p_arr_.size (); i < alternative_music_arr_.size (); i++)
+  if (Bar *c = dynamic_cast<Bar*> (i.elem_l_))
     {
-      Volta_spanner* v = new Volta_spanner;
-      Scalar prop = get_property ("voltaVisibility", 0);
-      v->visible_b_ = prop.to_bool ();
-      prop = get_property ("voltaSpannerDuration", 0);
-      if ((i == alternative_music_arr_.size () - 1) || prop.length_i ())
-        v->last_b_ = true;
-      Text_def* t = new Text_def;
-      t->text_str_ = alternative_str_arr_[i];
-      v->number_p_.set_p (t);
-      volta_p_arr_.push (v);
-      announce_element (Score_element_info (v, alternative_music_arr_[i]));
+      if (volta_span_p_)
+       volta_span_p_->add_bar (c);
+      if (end_volta_span_p_)
+       end_volta_span_p_ ->add_bar(c);
     }
 }
 
-void 
-Repeat_engraver::do_pre_move_processing ()
+
+void
+Repeat_engraver::do_removal_processing ()
 {
-  Moment now = now_mom ();
-  for (int i = bar_b_arr_.size (); i--; )
+  if (volta_span_p_)
     {
-      if (bar_b_arr_[i])
-       bar_b_arr_[i] = false;
-      if (now >= stop_mom_arr_[i])
-       {
-         bar_b_arr_.del (i);
-         stop_mom_arr_.del (i);
-         repeated_music_arr_.del (i);
-       }
+      typeset_element(volta_span_p_);
     }
-  for (int i = volta_p_arr_.size (); i--; )
+  if (end_volta_span_p_)
     {
-      if (volta_p_arr_[i] && (now >= alternative_stop_mom_arr_[i])
-         && (volta_p_arr_[i]->column_arr_.size () >= 1))
-        {
-         typeset_element (volta_p_arr_[i]);
-         volta_p_arr_[i] = 0;
-         volta_p_arr_.del (i);
-         alternative_music_arr_[i] = 0;
-         alternative_music_arr_.del (i);
-         alternative_start_mom_arr_.del (i);
-         alternative_stop_mom_arr_.del (i);
-         alternative_str_arr_.del (i);
-       }
+      typeset_element (end_volta_span_p_);
     }
+  // todo: the paranoid may also delete create_barmoments_queue_
 }
 
-void 
+void
 Repeat_engraver::do_post_move_processing ()
 {
+  for (Cons<Bar_create_event> *p = create_barmoments_queue_;
+       p && p->car_->when_ == now_mom (); p = p->next_)
+    if (p->car_->type_ == "stop")
+      {
+       repeated_music_l_ = 0;
+       done_this_one_b_ = false;
+      }
+}
+
+void 
+Repeat_engraver::do_pre_move_processing ()
+{
+  if (end_volta_span_p_)
+    {
+      typeset_element (end_volta_span_p_ );
+      end_volta_span_p_ =0;
+    }
+    
 }
 
+
+Repeat_engraver::Repeat_engraver()
+{
+  repeated_music_l_ =0;
+  end_volta_span_p_ =0;
+  volta_span_p_ =0;
+  done_this_one_b_ = false;
+  create_barmoments_queue_ =0;
+}
+                                
+/* ************** */
+Bar_create_event::Bar_create_event()
+{
+  last_b_ =false;
+  bar_b_ = true;
+}
+
+Bar_create_event::Bar_create_event (Moment w, String s)
+{
+  last_b_ =false;
+  when_ = w;
+  type_ = s;
+  bar_b_ = true;
+}
+
+Bar_create_event::Bar_create_event (Moment w, int i, int j)
+{
+  last_b_ =false;
+  when_ = w ;
+  bar_b_ = false;
+
+  if (i!=j)
+    type_ = to_str (i) + ".-" ;
+
+  type_ += to_str(j) + ".";
+}