* lily/include/translator.icc: new file.

[lilypond.git] / lily / figured-bass-engraver.cc

diff --git a/lily/figured-bass-engraver.cc b/lily/figured-bass-engraver.cc
index dc30cf3e2c75c04b6fe31e156782e97986c93c95..daddfaf972123e78eda9f4178c8066bbb71a32a7 100644 (file)
--- a/lily/figured-bass-engraver.cc
+++ b/lily/figured-bass-engraver.cc
@@ -1,53 +1,56 @@
+/*
+  figured-bass-engraver.cc -- implement Figured_bass_engraver
+
+  source file of the GNU LilyPond music typesetter
+
+  (c) 2002--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
+
 #include "engraver.hh"
-#include "text-item.hh"
-#include "musical-request.hh"
+#include "text-interface.hh"
 #include "item.hh"
+#include "context.hh"
 
 class Figured_bass_engraver : public Engraver
 {
-  
-  TRANSLATOR_DECLARATIONS(Figured_bass_engraver);
+  TRANSLATOR_DECLARATIONS (Figured_bass_engraver);
 protected:
-  Link_array<Note_req> figures_;
-  Rest_req * rest_req_;
+  Link_array<Music> figures_;
+  Music *rest_event_;
 
-  Grob * figure_;
-  
-  virtual bool try_music (Music*);
-  virtual void stop_translation_timestep ();
-  virtual void process_music ();
-};
+  Grob *figure_;
 
+  virtual bool try_music (Music *);
+  PRECOMPUTED_VIRTUAL void stop_translation_timestep ();
+  PRECOMPUTED_VIRTUAL void process_music ();
+};
 
-Figured_bass_engraver::Figured_bass_engraver()
+Figured_bass_engraver::Figured_bass_engraver ()
 {
   figure_ = 0;
-  rest_req_ = 0;
+  rest_event_ = 0;
 }
 
 void
 Figured_bass_engraver::stop_translation_timestep ()
 {
-  if (figure_)
-    {
-      typeset_grob (figure_);
-      figure_ =00;
-    }
+  figure_ = 0;
 
   figures_.clear ();
+  rest_event_ = 0;
 }
 
 bool
-Figured_bass_engraver::try_music (Music*m)
+Figured_bass_engraver::try_music (Music *m)
 {
-  if (Note_req* n = dynamic_cast<Note_req*> (m))
+  if (m->is_mus_type ("bass-figure-event"))
     {
-      figures_.push (n);
+      figures_.push (m);
       return true;
     }
-  else if (Rest_req * r = dynamic_cast<Rest_req*> (m))
+  else if (m->is_mus_type ("rest-event"))
     {
-      rest_req_ = r;
+      rest_event_ = m;
       return true;
     }
   return false;
@@ -56,52 +59,36 @@ Figured_bass_engraver::try_music (Music*m)
 void
 Figured_bass_engraver::process_music ()
 {
-  if (rest_req_)
+  if (rest_event_)
     {
-      figure_ = new Item (get_property ("BassFigure"));
-      announce_grob (figure_, rest_req_); // todo
-      figure_->set_grob_property ("text" , gh_str02scm ("-"));
+      figure_ = make_item ("BassFigure", rest_event_->self_scm ());
+      figure_->set_property ("text", scm_makfrom0str ("-"));
     }
   else if (figures_.size ())
     {
-      figure_ = new Item (get_property ("BassFigure"));
-      announce_grob (figure_, figures_[0]); // todo
-      SCM flist = SCM_EOL;
-      for (int i = 0; i < figures_.size (); i++)
+      SCM proc = get_property ("bassFigureFormatFunction");
+      if (ly_is_procedure (proc))
        {
-         Note_req * n = figures_[i];
-         Pitch *p = unsmob_pitch (n->get_mus_property ("pitch"));
-         
-         String fstr = to_str (p->steps ()+ 1);
-         
-         SCM one_fig = ly_str02scm(fstr.ch_C ());
-
-         if (p->alteration_i_ || to_boolean (n->get_mus_property ("force-accidental") ))
+         SCM l = SCM_EOL;
+         SCM *t = &l;
+         for (int i = 0; i < figures_.size (); i++)
            {
-             SCM alter = scm_assoc (gh_int2scm (p->alteration_i_),
-                                    figure_->get_grob_property ("accidental-alist"));
-             if (gh_pair_p (alter))
-               {
-                 one_fig = scm_list_n (ly_symbol2scm ("columns"),
-                                    one_fig,
-                                    ly_cdr(alter),
-                                    SCM_UNDEFINED);
-               }
+             *t = scm_cons (figures_[i]->self_scm (), SCM_EOL);
+             t = SCM_CDRLOC (*t);
            }
-         
-         flist = gh_cons (one_fig, flist);
+         figure_ = make_item ("BassFigure", figures_[0]->self_scm ());
+         scm_call_3 (proc, l, context ()->self_scm (),
+                     figure_->self_scm ());
        }
-
-      flist = gh_cons (ly_symbol2scm ("lines"), flist);
-
-      figure_-> set_grob_property ("text", flist);
     }
 }
 
-  
-ENTER_DESCRIPTION(Figured_bass_engraver,
-/* descr */       "Make volta brackets",
-/* creats*/       "BassFigure",
-/* acks  */       "",
-/* reads */       "",
-/* write */       "");
+#include "translator.icc"
+
+ADD_TRANSLATOR (Figured_bass_engraver,
+               /* descr */ "Make figured bass numbers.",
+               /* creats*/ "BassFigure",
+               /* accepts */ "rest-event bass-figure-event",
+               /* acks  */ "",
+               /* reads */ "bassFigureFormatFunction",
+               /* write */ "");