patch::: 1.3.121.jcn1

[lilypond.git] / lily / chord-name-engraver.cc

diff --git a/lily/chord-name-engraver.cc b/lily/chord-name-engraver.cc
index ef0744d627219e1092001232021a8c859d383043..a3541404a3c049e7a2cf2290b969fa83f6ac4344 100644 (file)
--- a/lily/chord-name-engraver.cc
+++ b/lily/chord-name-engraver.cc
@@ -3,106 +3,122 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
+  (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
-#include "chord-name-engraver.hh"
+#include "engraver.hh"
+#include "chord-name.hh"
 #include "chord.hh"
 #include "musical-request.hh"
 #include "paper-def.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
 #include "paper-def.hh"
 #include "main.hh"
 #include "dimensions.hh"
-#include "text-item.hh"
+#include "item.hh"
+#include "pitch.hh"
+#include "protected-scm.hh"
+
+class Chord_name_engraver : public Engraver 
+{
+public:
+  Chord_name_engraver ();
+  VIRTUAL_COPY_CONS (Translator);
+
+protected:
+  virtual void stop_translation_timestep ();
+  virtual void acknowledge_grob (Grob_info i);
+  virtual void create_grobs ();
+  virtual bool try_music (Music *);
+
+private:
+  void add_note (Note_req *);
+  
+  Item* chord_name_p_;
+  Protected_scm chord_;
+  Protected_scm last_chord_;
+};
 
 ADD_THIS_TRANSLATOR (Chord_name_engraver);
 
 Chord_name_engraver::Chord_name_engraver ()
 {
-  tonic_req_ = 0;
-  inversion_req_ = 0;
-  bass_req_ = 0;
+  chord_name_p_ = 0;
+  chord_ = gh_cons (SCM_EOL, gh_cons (SCM_EOL, SCM_EOL));
+  last_chord_ = SCM_EOL;
 }
 
 void
-Chord_name_engraver::acknowledge_element (Score_element_info i)
+Chord_name_engraver::add_note (Note_req* n)
 {
-  if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
-    pitch_arr_.push (n->pitch_);
+  SCM pitches = gh_car (chord_);
+  SCM modifiers = gh_cdr (chord_);
+  SCM inversion = modifiers == SCM_EOL ? SCM_EOL : gh_car (modifiers);
+  SCM bass = modifiers == SCM_EOL ? SCM_EOL : gh_cdr (modifiers);
+  
+  if (n->get_mus_property ("inversion") == SCM_BOOL_T)
+    inversion = n->get_mus_property ("pitch");
+  else if (n->get_mus_property ("bass") == SCM_BOOL_T)
+    bass = n->get_mus_property ("pitch");
+  else
+    pitches = scm_sort_list (gh_cons (n->get_mus_property ("pitch"), pitches),
+                            Pitch::less_p_proc);
+  chord_ = gh_cons (pitches, gh_cons (inversion, bass));
 }
 
 bool
-Chord_name_engraver::do_try_music (Music* m)
+Chord_name_engraver::try_music (Music* m)
 {
   if (Note_req* n = dynamic_cast<Note_req*> (m))
     {
-      pitch_arr_.push (n->pitch_);
-      return true;
-    }
-  if (Tonic_req* t = dynamic_cast<Tonic_req*> (m))
-    {
-      tonic_req_ = t;
-      return true;
-    }
-  if (Inversion_req* i = dynamic_cast<Inversion_req*> (m))
-    {
-      inversion_req_ = i;
-      return true;
-    }
-  if (Bass_req* b = dynamic_cast<Bass_req*> (m))
-    {
-      bass_req_ = b;
+      add_note (n);
       return true;
     }
   return false;
 }
 
 void
-Chord_name_engraver::do_process_requests ()
+Chord_name_engraver::acknowledge_grob (Grob_info i)
 {
-  if (text_p_arr_.size ())
-    return;
-  if (!pitch_arr_.size ())
-    return;
-
-  bool find_inversion_b = false;
-  SCM chord_inversion = get_property ("chordInversion", 0);
-  if (gh_boolean_p (chord_inversion))
-    find_inversion_b = gh_scm2bool (chord_inversion);
-
-  Chord chord = to_chord (pitch_arr_, tonic_req_, inversion_req_, bass_req_, 
-    find_inversion_b);
-    
-  Text_item* item_p =  new Text_item;
-
-  /*
-   TODO:
-     - switch on property, add american (?) chordNameStyle:
-       Chord::american_str (...)
-
-  SCM chordNameStyle = get_property ("chordNameStyle", 0);
-  if (chordNameStyle == "Banter")
-    item_p->text_str_ = chord.banter_str (inversion);
-   */
+  if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
+    add_note (n);
+}
 
-  item_p->text_str_ = chord.banter_str ();
-  
-  text_p_arr_.push (item_p);
-  announce_element (Score_element_info (item_p, 0));
+void
+Chord_name_engraver::create_grobs ()
+{
+  if (!chord_name_p_ && gh_car (chord_) != SCM_EOL)
+    {
+      chord_name_p_ = new Item (get_property ("ChordName"));
+      chord_name_p_->set_grob_property ("chord", chord_);
+      announce_grob (chord_name_p_, 0);
+      SCM s = get_property ("chordChanges");
+#ifdef DEBUG
+      /*
+       gdb crashes upon printscm (chord_) etc...
+       ugh: why does gh_equal_p () not seem to work??
+       */
+      printf ("chord: %s\n",  ly_scm2string (ly_write2scm (chord_)).ch_C ());
+      printf ("last_chord: %s\n", ly_scm2string (ly_write2scm (last_chord_)).ch_C ());
+      int i = gh_equal_p (chord_, last_chord_);
+      printf ("i: %d\n", i);
+#endif
+      if (to_boolean (s) && last_chord_ != SCM_EOL
+         && gh_equal_p (chord_, last_chord_))
+       chord_name_p_->set_grob_property ("begin-of-line-visible", SCM_BOOL_T);
+    }
 }
 
 void
-Chord_name_engraver::do_pre_move_processing ()
+Chord_name_engraver::stop_translation_timestep ()
 {
-  for (int i=0; i < text_p_arr_.size (); i++)
+  if (chord_name_p_)
     {
-      typeset_element (text_p_arr_[i]);
+      typeset_grob (chord_name_p_);
     }
-  text_p_arr_.clear ();
-  pitch_arr_.clear ();
-  tonic_req_ = 0;
-  inversion_req_ = 0;
-  bass_req_ = 0;
+  chord_name_p_ = 0;
+
+  last_chord_ = chord_;
+  chord_ = gh_cons (SCM_EOL, gh_cons (SCM_EOL, SCM_EOL));
 }