X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstaff-symbol-engraver.cc;h=cfd92d8a56f5fb0b7ca40c25bffa6bdb2de89156;hb=5d057e2673b75417a187d75f09023f6071a81e3e;hp=410cbac927eedb45b81705bc6b15c520df7474e8;hpb=9c8bcb9a2a1fedb5459e593b18a8c550318e6800;p=lilypond.git

diff --git a/lily/staff-symbol-engraver.cc b/lily/staff-symbol-engraver.cc
index 410cbac927..cfd92d8a56 100644
--- a/lily/staff-symbol-engraver.cc
+++ b/lily/staff-symbol-engraver.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 
@@ -18,62 +18,107 @@
   Manage the staff symbol.
  */
 class Staff_symbol_engraver : public Engraver { 
-  Spanner *span_p_;
 public:
-  VIRTUAL_COPY_CONS(Translator);
-  Staff_symbol_engraver();
+  TRANSLATOR_DECLARATIONS (Staff_symbol_engraver);
   
 protected:
-  virtual ~Staff_symbol_engraver();
-  virtual void acknowledge_element (Score_element_info);
-  virtual void do_removal_processing();
-  virtual void do_creation_processing();
+  Spanner *span_;
+  
+  virtual ~Staff_symbol_engraver ();
+  virtual void acknowledge_grob (Grob_info);
+  virtual void finalize ();
+  virtual void process_music ();
 };
 
 
-Staff_symbol_engraver::~Staff_symbol_engraver()
+Staff_symbol_engraver::~Staff_symbol_engraver ()
 {
-  assert (!span_p_);
+  assert (!span_);
 }
 
-Staff_symbol_engraver::Staff_symbol_engraver()
+Staff_symbol_engraver::Staff_symbol_engraver ()
 {
-  span_p_ = 0;
+  span_ = 0;
 }
 
 void
-Staff_symbol_engraver::do_creation_processing()
+Staff_symbol_engraver::process_music ()
 {
-  span_p_ = new Spanner (get_property ("staffSymbolBasicProperties"));
+  if (!span_)
+    {
+      span_ = make_spanner ("StaffSymbol");
   
-  span_p_->set_bound(LEFT, unsmob_element (get_property ("currentCommandColumn")));
+      span_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
 
-  announce_element (span_p_, 0);
+      announce_grob (span_, SCM_EOL);
+    }
 }
 
 void
-Staff_symbol_engraver::do_removal_processing()
+Staff_symbol_engraver::finalize ()
 {
-  SCM n = get_property ("numberOfStaffLines");
-  SCM ss = get_property ("staffSpace");
+  if (span_)
+    {
+      span_->set_bound (RIGHT,unsmob_grob (get_property ("currentCommandColumn")));
+      typeset_grob (span_);
+    }
+  span_ =0;
+}
 
-  if (gh_number_p (ss))
-    span_p_->set_elt_property ("staff-space", ss);
-  if (gh_number_p (n))
-    span_p_->set_elt_property ("line-count", n);
+void
+Staff_symbol_engraver::acknowledge_grob (Grob_info s)
+{
+  s.grob_->set_property ("staff-symbol", span_->self_scm ());
 
-  span_p_->set_bound(RIGHT,unsmob_element (get_property ("currentCommandColumn")));
-  typeset_element (span_p_);
-  span_p_ =0;
+  // remove this. probly not necessary?
+  s.grob_->add_dependency (span_); // UGH. UGH. UGH
 }
 
+
+
+
+ENTER_DESCRIPTION (Staff_symbol_engraver,
+/* descr */       "Create the constellation of five (default) "
+"staff lines.",
+/* creats*/       "StaffSymbol",
+/* accepts */     "",
+/* acks  */      "grob-interface",
+/* reads */       "",
+/* write */       "");
+
+/****************************************************************/
+
+
+class Tab_staff_symbol_engraver : public Staff_symbol_engraver
+{
+public:
+  TRANSLATOR_DECLARATIONS (Tab_staff_symbol_engraver);
+protected:
+  virtual void process_music ();
+};
+
 void
-Staff_symbol_engraver::acknowledge_element (Score_element_info s)
+Tab_staff_symbol_engraver::process_music ()
 {
-  s.elem_l_->set_elt_property ("staff-symbol", span_p_->self_scm ());
-  s.elem_l_->add_dependency (span_p_); // UGH. UGH. UGH 
+  bool init = !span_;
+  Staff_symbol_engraver::process_music ();
+  if (init)
+    {
+      int k = scm_ilength (get_property ("stringTunings"));
+      if (k>=0)
+	span_->set_property ("line-count", gh_int2scm (k));
+    }
 }
 
+Tab_staff_symbol_engraver::Tab_staff_symbol_engraver ()
+{
+}
 
-ADD_THIS_TRANSLATOR(Staff_symbol_engraver);
-
+ENTER_DESCRIPTION (Tab_staff_symbol_engraver,
+/* descr */       "Create a staff-symbol, but look at stringTunings for the number of lines."
+"staff lines.",
+/* creats*/       "StaffSymbol",
+/* accepts */     "",
+/* acks  */      "grob-interface",
+/* reads */       "stringTunings",
+/* write */       "");