catch GUILE errors

[lilypond.git] / lily / note-heads-engraver.cc

diff --git a/lily/note-heads-engraver.cc b/lily/note-heads-engraver.cc
index 099c8bf731a75397d01f6dfde9f8d79c9a1c5b37..4bad6447d884732662f53a49b4f7823e27109e37 100644 (file)
--- a/lily/note-heads-engraver.cc
+++ b/lily/note-heads-engraver.cc
@@ -1,96 +1,147 @@
 /*
   head-grav.cc -- part of GNU LilyPond
 
-  (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
+#include <ctype.h>
 
-#include "note-head.hh"
-#include "note-heads-engraver.hh"
+#include "rhythmic-head.hh"
 #include "paper-def.hh"
 #include "musical-request.hh"
 #include "dots.hh"
 #include "dot-column.hh"
+#include "staff-symbol-referencer.hh"
+#include "item.hh"
+#include "engraver.hh"
+#include "warn.hh"
+
+/**
+  make balls and rests
+ */
+class Note_heads_engraver : public Engraver
+{
+  Link_array<Item> notes_;
+  
+  Link_array<Item> dots_;
+  Link_array<Note_req> note_reqs_;
+
+public:
+  TRANSLATOR_DECLARATIONS(Note_heads_engraver);
+
+protected:
+  virtual void start_translation_timestep ();
+  virtual bool try_music (Music *req) ;
+  virtual void process_music ();
+
+  virtual void stop_translation_timestep ();
+
+private:
+  bool in_ligature;
+};
 
 Note_heads_engraver::Note_heads_engraver()
 {
+  in_ligature = 0;
 }
 
 bool
-Note_heads_engraver::do_try_music (Music *m) 
+Note_heads_engraver::try_music (Music *m) 
 {
   if (Note_req * n =dynamic_cast <Note_req *> (m))
     {
-      note_req_l_arr_.push (n);
+      note_reqs_.push (n);
       return true;
     }
-  if (Tonic_req* t = dynamic_cast<Tonic_req*> (m))
+  else if (dynamic_cast<Busy_playing_req*> (m))
     {
-      return true;
+      return note_reqs_.size ();
+    }
+  else if (Span_req *req_ = dynamic_cast<Span_req*> (m))
+    {
+      if (scm_equal_p (req_->get_mus_property ("span-type"),
+                      ly_str02scm ("abort")) == SCM_BOOL_T)
+       {
+         in_ligature = 0;
+       }
+      else if (scm_equal_p (req_->get_mus_property ("span-type"),
+                           ly_str02scm ("ligature")) == SCM_BOOL_T)
+       {
+         in_ligature = (req_->get_span_dir () == START);
+       }
     }
+  
   return false;
 }
 
+
 void
-Note_heads_engraver::do_process_requests()
+Note_heads_engraver::process_music ()
 {
-  if (note_p_arr_.size ())
-    return ;
-  
-  String noteheadstyle = get_property ("noteHeadStyle", 0);
-  for (int i=0; i < note_req_l_arr_.size (); i++)
+  for (int i=0; i < note_reqs_.size (); i++)
     {
-      Note_head *note_p  = new Note_head;
-      Note_req * note_req_l = note_req_l_arr_[i];
-      note_p->balltype_i_ = note_req_l->duration_.durlog_i_;
-      note_p->dots_i_ = note_req_l->duration_.dots_i_;
-      if (note_p->dots_i_)
+      Item *note =
+       new Item (get_property ((in_ligature) ? "LigatureHead" : "NoteHead"));
+
+      Music * req = note_reqs_[i];
+      
+      Duration dur = *unsmob_duration (req->get_mus_property ("duration"));
+
+      note->set_grob_property ("duration-log", gh_int2scm (dur.duration_log ()));
+
+      if (dur.dot_count ())
        {
-         Dots * d = new Dots;
-         note_p->dots_l_ = d;
-         announce_element (Score_element_info (d,0));
-         dot_p_arr_.push (d);
-       }
+         Item * d = new Item (get_property ("Dots"));
+         Rhythmic_head::set_dots (note, d);
+         
+         if (dur.dot_count ()
+             != gh_scm2int (d->get_grob_property ("dot-count")))
+           d->set_grob_property ("dot-count", gh_int2scm (dur.dot_count ()));
 
-      //      note_p->steps_i_ = note_req_l->pitch_.steps ();
-      note_p->position_i_ = note_req_l->pitch_.steps ();
+         d->set_parent (note, Y_AXIS);
+         announce_grob (d, SCM_EOL);
+         dots_.push (d);
+       }
 
+      Pitch *pit =unsmob_pitch (req->get_mus_property ("pitch"));
 
-      if (noteheadstyle == "transparent")
-       note_p->set_elt_property (transparent_scm_sym, SCM_BOOL_T);
-      else 
-        note_p->set_elt_property (style_scm_sym,
-                                 gh_str02scm (noteheadstyle.ch_C()));
+      int pos = pit->steps ();
+      SCM c0 = get_property ("centralCPosition");
+      if (gh_number_p (c0))
+       pos += gh_scm2int (c0);
 
-      
-      Score_element_info itinf (note_p,note_req_l);
-      announce_element (itinf);
-      note_p_arr_.push (note_p);
+      note->set_grob_property ("staff-position",   gh_int2scm (pos));
+      announce_grob (note,req->self_scm());
+      notes_.push (note);
     }
 }
- 
+
 void
-Note_heads_engraver::do_pre_move_processing()
+Note_heads_engraver::stop_translation_timestep ()
 {
-  for (int i=0; i < note_p_arr_.size (); i++)
+  for (int i=0; i < notes_.size (); i++)
     {
-      typeset_element (note_p_arr_[i]);
+      typeset_grob (notes_[i]);
     }
-  note_p_arr_.clear ();
-  for (int i=0; i < dot_p_arr_.size (); i++)
+
+  notes_.clear ();
+  for (int i=0; i < dots_.size (); i++)
     {
-      typeset_element (dot_p_arr_[i]);
+      typeset_grob (dots_[i]);
     }
-  dot_p_arr_.clear ();
+  dots_.clear ();
   
-  note_req_l_arr_.clear ();
+  note_reqs_.clear ();
 }
 
 void
-Note_heads_engraver::do_post_move_processing()
+Note_heads_engraver::start_translation_timestep ()
 {
-
 }
 
 
-
-ADD_THIS_TRANSLATOR(Note_heads_engraver);
+ENTER_DESCRIPTION(Note_heads_engraver,
+/* descr */       "Generate one or more noteheads from Music of type Note_req.",
+/* creats*/       "NoteHead Dots",
+/* acks  */       "",
+/* reads */       "centralCPosition",
+/* write */       "");