Handle unwritable midi file.

[lilypond.git] / lily / slur-engraver.cc

diff --git a/lily/slur-engraver.cc b/lily/slur-engraver.cc
index 2f1cc065e8f5b6c87e310fd01f3debb35142e61b..f41c69c3380a21140b7f3e26bd5c85ba84eb7e30 100644 (file)
--- a/lily/slur-engraver.cc
+++ b/lily/slur-engraver.cc
@@ -1,17 +1,16 @@
 /*
   slur-engraver.cc -- implement Slur_engraver
 
-  (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
-#include "event.hh"
-#include "new-slur.hh"
-#include "warn.hh"
+#include "slur.hh"
 #include "note-column.hh"
 #include "context.hh"
 #include "directional-element-interface.hh"
 #include "engraver.hh"
 #include "spanner.hh"
+#include "tie.hh"
 
 /*
   It is possible that a slur starts and ends on the same note.  At
@@ -22,14 +21,14 @@
 class Slur_engraver : public Engraver
 {
   Drul_array<Music *> events_;
-  Music * running_slur_start_;
+  Music *running_slur_start_;
   Link_array<Grob> slurs_;
   Link_array<Grob> end_slurs_;
 
   void set_melisma (bool);
 
 protected:
-  virtual bool try_music (Music*);
+  virtual bool try_music (Music *);
   virtual void acknowledge_grob (Grob_info);
   virtual void stop_translation_timestep ();
   virtual void finalize ();
@@ -41,7 +40,7 @@ public:
 
 Slur_engraver::Slur_engraver ()
 {
-  events_[START] =events_[STOP] = 0;
+  events_[START] = events_[STOP] = 0;
 }
 
 bool
@@ -49,9 +48,6 @@ Slur_engraver::try_music (Music *m)
 {
   if (m->is_mus_type ("slur-event"))
     {
-      /*
-       Let's not start more than one slur per moment.
-      */
       Direction d = to_dir (m->get_property ("span-direction"));
       if (d == START)
        {
@@ -60,9 +56,6 @@ Slur_engraver::try_music (Music *m)
        }
       else if (d == STOP)
        {
-         if (slurs_.is_empty ())
-           return false;
-         
          events_[STOP] = m;
          return true;
        }
@@ -73,37 +66,51 @@ Slur_engraver::try_music (Music *m)
 void
 Slur_engraver::set_melisma (bool m)
 {
-  context ()->set_property ("slurMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
+  context ()->set_property ("slurMelismaBusy", m ? SCM_BOOL_T : SCM_BOOL_F);
 }
 
 void
 Slur_engraver::acknowledge_grob (Grob_info info)
 {
-  Grob *e =info.grob_;
+  Grob *e = info.grob_;
   if (Note_column::has_interface (info.grob_))
     {
-      for (int i = slurs_.size (); i--; )
-       New_slur::add_column (slurs_[i], e);
-      for (int i = end_slurs_.size (); i-- ; )
-       New_slur::add_column (end_slurs_[i], e);
+      for (int i = slurs_.size (); i--;)
+       Slur::add_column (slurs_[i], e);
+      for (int i = end_slurs_.size (); i--;)
+       Slur::add_column (end_slurs_[i], e);
     }
   else
     {
+      SCM inside = e->get_property ("inside-slur");
       if (Tie::has_interface (e)
-         || to_boolean (e->get_property ("inside-slur")))
+         || to_boolean (inside))
+       {
+         for (int i = slurs_.size (); i--;)
+           Slur::add_extra_encompass (slurs_[i], e);
+         for (int i = end_slurs_.size (); i--;)
+           Slur::add_extra_encompass (end_slurs_[i], e);
+       }
+      else if (inside == SCM_BOOL_F)
        {
-         for (int i = slurs_.size (); i--; )
-           New_slur::add_extra_encompass (slurs_[i], e);
-         for (int i = end_slurs_.size (); i--; )
-           New_slur::add_extra_encompass (end_slurs_[i], e);
+         Grob *slur = slurs_.size () ? slurs_[0] : 0;
+         slur = (end_slurs_.size () && !slur)
+           ? end_slurs_[0] : slur;
+
+         if (slur)
+           {
+             e->add_offset_callback (Slur::outside_slur_callback_proc, Y_AXIS);
+             e->set_property ("slur", slur->self_scm ());
+           }
        }
     }
 }
+
 void
 Slur_engraver::finalize ()
 {
   if (slurs_.size ())
-    slurs_[0]->warning (_("unterminated slur"));
+    slurs_[0]->warning (_ ("unterminated slur"));
 }
 
 void
@@ -111,17 +118,22 @@ Slur_engraver::process_music ()
 {
   if (events_[STOP])
     {
+      if (slurs_.size () == 0)
+       {
+         events_[STOP]->origin ()->warning (_ ("No slur to end"));
+       }
+
       end_slurs_ = slurs_;
       slurs_.clear ();
     }
-  
+
   if (events_[START] && slurs_.is_empty ())
     {
       Music *ev = events_[START];
 
       bool double_slurs = to_boolean (get_property ("doubleSlurs"));
 
-      Grob * slur = make_spanner ("Slur", events_[START]->self_scm ());
+      Grob *slur = make_spanner ("Slur", events_[START]->self_scm ());
       Direction updown = to_dir (ev->get_property ("direction"));
       if (updown && !double_slurs)
        set_grob_direction (slur, updown);
@@ -133,7 +145,7 @@ Slur_engraver::process_music ()
          set_grob_direction (slur, DOWN);
          slur = make_spanner ("Slur", events_[START]->self_scm ());
          set_grob_direction (slur, UP);
-         slurs_.push (slur); 
+         slurs_.push (slur);
        }
     }
   set_melisma (slurs_.size ());
@@ -146,10 +158,10 @@ Slur_engraver::stop_translation_timestep ()
   events_[START] = events_[STOP] = 0;
 }
 
-ENTER_DESCRIPTION (Slur_engraver,
-  /* descr */       "Build slurs grobs from slur events",
-  /* creats*/       "Slur",
-  /* accepts */     "slur-event",
-  /* acks  */      "note-column-interface accidental-interface fingering-interface script-interface tie-interface",
-  /* reads */       "slurMelismaBusy doubleSlurs",
-  /* write */       "");
+ADD_TRANSLATOR (Slur_engraver,
+               /* descr */ "Build slurs grobs from slur events",
+               /* creats*/ "Slur",
+               /* accepts */ "slur-event",
+               /* acks  */ "note-column-interface accidental-interface fingering-interface script-interface tie-interface text-script-interface",
+               /* reads */ "slurMelismaBusy doubleSlurs",
+               /* write */ "");