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 69d16f6c6714251134fc8333edb97a9d757760e7..4bad6447d884732662f53a49b4f7823e27109e37 100644 (file)
--- a/lily/note-heads-engraver.cc
+++ b/lily/note-heads-engraver.cc
@@ -1,7 +1,7 @@
 /*
   head-grav.cc -- part of GNU LilyPond
 
-  (c)  1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 #include <ctype.h>
 
@@ -12,7 +12,7 @@
 #include "dot-column.hh"
 #include "staff-symbol-referencer.hh"
 #include "item.hh"
-#include "score-engraver.hh"
+#include "engraver.hh"
 #include "warn.hh"
 
 /**
@@ -20,70 +20,86 @@
  */
 class Note_heads_engraver : public Engraver
 {
-  Link_array<Item> note_p_arr_;
+  Link_array<Item> notes_;
   
-  Link_array<Item> dot_p_arr_;
-  Link_array<Note_req> note_req_l_arr_;
-  Moment note_end_mom_;
+  Link_array<Item> dots_;
+  Link_array<Note_req> note_reqs_;
+
 public:
-  VIRTUAL_COPY_CONS (Translator);
+  TRANSLATOR_DECLARATIONS(Note_heads_engraver);
 
 protected:
   virtual void start_translation_timestep ();
-  virtual bool try_music (Music *req_l) ;
+  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::try_music (Music *m) 
 {
   if (Note_req * n =dynamic_cast <Note_req *> (m))
     {
-      note_req_l_arr_.push (n);
-      note_end_mom_  = note_end_mom_ >? now_mom () + m->length_mom ();
-      
+      note_reqs_.push (n);
       return true;
     }
   else if (dynamic_cast<Busy_playing_req*> (m))
     {
-      return now_mom () < note_end_mom_;
+      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;
   
+  return false;
 }
 
 
 void
 Note_heads_engraver::process_music ()
 {
-  for (int i=0; i < note_req_l_arr_.size (); i++)
+  for (int i=0; i < note_reqs_.size (); i++)
     {
-      Item *note_p  = new Item (get_property ("NoteHead"));
-      
-      Staff_symbol_referencer::set_interface (note_p);
-
+      Item *note =
+       new Item (get_property ((in_ligature) ? "LigatureHead" : "NoteHead"));
 
+      Music * req = note_reqs_[i];
       
-      Music * req = note_req_l_arr_[i];
-      
-      Duration dur   = *unsmob_duration (req->get_mus_property ("duration"));
-      note_p->set_grob_property ("duration-log",
-                               gh_int2scm (dur.duration_log () <? 2));
+      Duration dur = *unsmob_duration (req->get_mus_property ("duration"));
+
+      note->set_grob_property ("duration-log", gh_int2scm (dur.duration_log ()));
 
       if (dur.dot_count ())
        {
          Item * d = new Item (get_property ("Dots"));
-         Rhythmic_head::set_dots (note_p, d);
+         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 ()));
 
-         d->set_parent (note_p, Y_AXIS);
-         announce_grob (d,0);
-         dot_p_arr_.push (d);
+         d->set_parent (note, Y_AXIS);
+         announce_grob (d, SCM_EOL);
+         dots_.push (d);
        }
 
       Pitch *pit =unsmob_pitch (req->get_mus_property ("pitch"));
@@ -93,61 +109,39 @@ Note_heads_engraver::process_music ()
       if (gh_number_p (c0))
        pos += gh_scm2int (c0);
 
-      note_p->set_grob_property ("staff-position",   gh_int2scm (pos));
-      if (to_boolean (get_property ("easyPlay")))
-       {
-         char s[2] = "a";
-         s[0] = (pit->notename_i_ + 2)%7 + 'a';
-
-         s[0] = toupper (s[0]);
-         note_p->set_grob_property ("note-character", ly_str02scm (s));
-       }
-      
-      announce_grob (note_p,req);
-      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::stop_translation_timestep ()
 {
-  for (int i=0; i < note_p_arr_.size (); i++)
+  for (int i=0; i < notes_.size (); i++)
     {
-      typeset_grob (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_grob (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::start_translation_timestep ()
 {
-  
-  /* TODO:make this settable?
-   */
-  if (note_end_mom_ > now_mom ())
-    {
-      Score_engraver * e = 0;
-      Translator * t  =  daddy_grav_l ();
-      for (; !e && t;  t = t->daddy_trans_l_)
-       {
-         e = dynamic_cast<Score_engraver*> (t);
-       }
-
-      if (!e)
-       programming_error ("No score engraver!");
-      else
-       e->forbid_breaks ();    // guh. Use properties!
-    }
 }
 
 
-
-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 */       "");