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[lilypond.git] / lily / phrasing-slur-engraver.cc
index 329228cddc8d9ef472c108e16b8f10925626fd49..ef0b4287df1faae20a2b43f6a72ec649f87f5992 100644 (file)
 /*
   phrasing-slur-engraver.cc -- implement Phrasing_slur_engraver
 
-  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  source file of the GNU LilyPond music typesetter
+
+  (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
-#include "musical-request.hh"
-#include "slur.hh"
-#include "debug.hh"
-#include "note-column.hh"
-#include "translator-group.hh"
 #include "engraver.hh"
+
+#include "context.hh"
+#include "directional-element-interface.hh"
+#include "international.hh"
+#include "note-column.hh"
+#include "slur.hh"
 #include "spanner.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+
+#include "translator.icc"
+
+/*
+  It is possible that a slur starts and ends on the same note.  At
+  least, it is for phrasing slurs: a note can be both beginning and
+  ending of a phrase.
+
+*/
+
+/*
+  NOTE NOTE NOTE
+
+  This is largely similar to Slur_engraver. Check if fixes apply there too.  
 
+  (on principle, engravers don't use inheritance for code sharing)
+  
+ */
 class Phrasing_slur_engraver : public Engraver
 {
-  Link_array<Span_req> requests_arr_;
-  Link_array<Span_req> new_phrasing_slur_req_l_arr_;
-  Link_array<Grob> phrasing_slur_l_stack_;
-  Link_array<Grob> end_phrasing_slur_l_arr_;
-  Moment last_start_;
+  Drul_array<Stream_event *> events_;
+  Stream_event *running_slur_start_;
+  vector<Grob*> slurs_;
+  vector<Grob*> end_slurs_;
 
 protected:
-  virtual bool try_music (Music*);
-  virtual void acknowledge_grob (Grob_info);
-  virtual void stop_translation_timestep ();
-  virtual void start_translation_timestep ();
+  void acknowledge_extra_object (Grob_info);
+  DECLARE_ACKNOWLEDGER (accidental);
+  DECLARE_ACKNOWLEDGER (fingering);
+  DECLARE_ACKNOWLEDGER (note_column);
+  DECLARE_ACKNOWLEDGER (slur);
+  DECLARE_ACKNOWLEDGER (script);
+  DECLARE_ACKNOWLEDGER (text_script);
+  DECLARE_ACKNOWLEDGER (tie);
+  DECLARE_ACKNOWLEDGER (tuplet_number);
+  DECLARE_TRANSLATOR_LISTENER (phrasing_slur);
+
+  void stop_translation_timestep ();
   virtual void finalize ();
-  virtual void process_acknowledged_grobs ();
+  void process_music ();
 
 public:
-  TRANSLATOR_DECLARATIONS(Phrasing_slur_engraver);
-  
+  TRANSLATOR_DECLARATIONS (Phrasing_slur_engraver);
 };
 
 Phrasing_slur_engraver::Phrasing_slur_engraver ()
 {
-  last_start_ = Moment (-1);
+  events_[START] = events_[STOP] = 0;
 }
 
-bool
-Phrasing_slur_engraver::try_music (Music *req_l)
+IMPLEMENT_TRANSLATOR_LISTENER (Phrasing_slur_engraver, phrasing_slur);
+void
+Phrasing_slur_engraver::listen_phrasing_slur (Stream_event *ev)
 {
-  if (Span_req *sl = dynamic_cast <Span_req *> (req_l))
-    {
-      String t =  ly_scm2string (sl->get_mus_property ("span-type"));
-      if (t == "abort")
-       {
-         for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
-           {
-             phrasing_slur_l_stack_[i]->suicide ();
-           }
-         phrasing_slur_l_stack_.clear ();
-         for (int i = 0; i < end_phrasing_slur_l_arr_.size (); i++)
-           {
-             end_phrasing_slur_l_arr_[i]->suicide ();
-           }
-         end_phrasing_slur_l_arr_.clear ();
-         requests_arr_.clear ();
-         new_phrasing_slur_req_l_arr_.clear ();
-       }
-      else if (t == "phrasing-slur")
-       {
-         /*
-           Let's not start more than one phrasing slur per moment.
-          */
-         if (sl->get_span_dir () == START)
-           {
-             if (now_mom () > last_start_)
-               {
-                 new_phrasing_slur_req_l_arr_.push (sl);
-                 last_start_ = now_mom ();
-                 return true;
-               }
-           }
-         else
-           {
-             new_phrasing_slur_req_l_arr_.push (sl);
-             return true;
-           }
-       }
-    }
-  return false;
+  /*
+    Let's not start more than one slur per moment.
+  */
+  Direction d = to_dir (ev->get_property ("span-direction"));
+  if (d == START)
+    ASSIGN_EVENT_ONCE (events_[START], ev);
+  else if (d == STOP && !slurs_.empty ())
+    ASSIGN_EVENT_ONCE (events_[STOP], ev);
 }
 
 void
-Phrasing_slur_engraver::acknowledge_grob (Grob_info info)
+Phrasing_slur_engraver::acknowledge_note_column (Grob_info info)
 {
-  if (Note_column::has_interface (info.grob_l_))
-    {
-      Grob *e =info.grob_l_;
-      for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
-       Slur::add_column (phrasing_slur_l_stack_[i], e);
-      for (int i = 0; i < end_phrasing_slur_l_arr_.size (); i++)
-       Slur::add_column (end_phrasing_slur_l_arr_[i], e);
-    }
+  Grob *e = info.grob ();
+  for (vsize i = slurs_.size (); i--;)
+    Slur::add_column (slurs_[i], e);
+  for (vsize i = end_slurs_.size (); i--;)
+    Slur::add_column (end_slurs_[i], e);
 }
 
 void
-Phrasing_slur_engraver::finalize ()
+Phrasing_slur_engraver::acknowledge_extra_object (Grob_info info)
 {
-  for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
-    {
-#if 0
-      typeset_grob (phrasing_slur_l_stack_[i]);
-#else
-      /*
-       Let's not typeset unterminated stuff
-       */
-      phrasing_slur_l_stack_[i]->suicide ();
-#endif     
-    }
-  phrasing_slur_l_stack_.clear ();
+  Slur::auxiliary_acknowledge_extra_object (info, slurs_, end_slurs_);
+}
 
-    for (int i=0; i < requests_arr_.size (); i++)
-      {
-       requests_arr_[i]->origin ()->warning (_ ("unterminated phrasing slur"));
-      }
+void
+Phrasing_slur_engraver::acknowledge_accidental (Grob_info info)
+{
+  acknowledge_extra_object (info);
 }
 
 void
-Phrasing_slur_engraver::process_acknowledged_grobs ()
+Phrasing_slur_engraver::acknowledge_fingering (Grob_info info)
 {
-  Link_array<Grob> start_phrasing_slur_l_arr;
-  for (int i=0; i< new_phrasing_slur_req_l_arr_.size (); i++)
-    {
-      Span_req* phrasing_slur_req_l = new_phrasing_slur_req_l_arr_[i];
-      // end phrasing slur: move the phrasing slur to other array
-      if (phrasing_slur_req_l->get_span_dir () == STOP)
-       {
-         if (phrasing_slur_l_stack_.empty ())
-           phrasing_slur_req_l->origin ()->warning (_f ("can't find start of phrasing slur"));
-         else
-           {
-             Grob* phrasing_slur = phrasing_slur_l_stack_.pop ();
-             end_phrasing_slur_l_arr_.push (phrasing_slur);
-             requests_arr_.pop ();
-           }
-       }
-      else  if (phrasing_slur_req_l->get_span_dir () == START)
-       {
-         // push a new phrasing_slur onto stack.
-         // (use temp. array to wait for all phrasing_slur STOPs)
-         Grob* phrasing_slur = new Spanner (get_property ("PhrasingSlur"));
-         Slur::set_interface (phrasing_slur); // can't remove.
-         start_phrasing_slur_l_arr.push (phrasing_slur);
-         requests_arr_.push (phrasing_slur_req_l);
-         announce_grob(phrasing_slur, phrasing_slur_req_l->self_scm());
-       }
-    }
-  for (int i=0; i < start_phrasing_slur_l_arr.size (); i++)
-    phrasing_slur_l_stack_.push (start_phrasing_slur_l_arr[i]);
-  new_phrasing_slur_req_l_arr_.clear ();
+  acknowledge_extra_object (info);
 }
 
 void
-Phrasing_slur_engraver::stop_translation_timestep ()
+Phrasing_slur_engraver::acknowledge_text_script (Grob_info info)
 {
-  for (int i = 0; i < end_phrasing_slur_l_arr_.size (); i++)
+  acknowledge_extra_object (info);
+}
+
+void
+Phrasing_slur_engraver::acknowledge_script (Grob_info info)
+{
+  if (!info.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-interface")))
+    acknowledge_extra_object (info);
+}
+
+void
+Phrasing_slur_engraver::acknowledge_tie (Grob_info info)
+{
+  acknowledge_extra_object (info);
+}
+
+void
+Phrasing_slur_engraver::acknowledge_tuplet_number (Grob_info info)
+{
+  acknowledge_extra_object (info);
+}
+
+void
+Phrasing_slur_engraver::acknowledge_slur (Grob_info info)
+{
+  acknowledge_extra_object (info);
+}
+
+void
+Phrasing_slur_engraver::finalize ()
+{
+  if (slurs_.size ())
+    slurs_[0]->warning (_ ("unterminated phrasing slur"));
+}
+
+void
+Phrasing_slur_engraver::process_music ()
+{
+  if (events_[STOP])
     {
-      typeset_grob (end_phrasing_slur_l_arr_[i]);
+      end_slurs_ = slurs_;
+      slurs_.clear ();
+    }
+
+  if (events_[START] && slurs_.empty ())
+    {
+      Stream_event *ev = events_[START];
+
+      Grob *slur = make_spanner ("PhrasingSlur", events_[START]->self_scm ());
+      Direction updown = to_dir (ev->get_property ("direction"));
+      if (updown)
+       set_grob_direction (slur, updown);
+
+      slurs_.push_back (slur);
     }
-  end_phrasing_slur_l_arr_.clear ();
 }
 
 void
-Phrasing_slur_engraver::start_translation_timestep ()
+Phrasing_slur_engraver::stop_translation_timestep ()
 {
-  new_phrasing_slur_req_l_arr_.clear ();
+  end_slurs_.clear ();
+  events_[START] = events_[STOP] = 0;
 }
 
+ADD_ACKNOWLEDGER (Phrasing_slur_engraver, accidental);
+ADD_ACKNOWLEDGER (Phrasing_slur_engraver, fingering)
+ADD_ACKNOWLEDGER (Phrasing_slur_engraver, note_column);
+ADD_ACKNOWLEDGER (Phrasing_slur_engraver, slur);
+ADD_ACKNOWLEDGER (Phrasing_slur_engraver, script);
+ADD_ACKNOWLEDGER (Phrasing_slur_engraver, text_script);
+ADD_ACKNOWLEDGER (Phrasing_slur_engraver, tie);
+ADD_ACKNOWLEDGER (Phrasing_slur_engraver, tuplet_number);
+
+ADD_TRANSLATOR (Phrasing_slur_engraver,
+               /* doc */
+               "Print phrasing slurs.  Similar to @ref{Slur_engraver}.",
+
+               /* create */
+               "PhrasingSlur ",
 
+               /* read */
+               "",
 
-ENTER_DESCRIPTION(Phrasing_slur_engraver,
-/* descr */       "Print phrasing slurs. Similar to Slur_engraver",
-/* creats*/       "PhrasingSlur",
-/* acks  */       "note-column-interface",
-/* reads */       "slurMelismaBusy",
-/* write */       "");
+               /* write */
+               ""
+               );