2003 -> 2004

[lilypond.git] / lily / vertical-align-engraver.cc

diff --git a/lily/vertical-align-engraver.cc b/lily/vertical-align-engraver.cc
index 028037df76d5aa48afd3feb016b762a6e23c5909..0007e6cb5e34e54171e0475fc89667c8ed4a37d1 100644 (file)
--- a/lily/vertical-align-engraver.cc
+++ b/lily/vertical-align-engraver.cc
@@ -3,10 +3,9 @@
 
   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>
 */
 #include "translator-group.hh"
-#include "axis-group-engraver.hh"
 #include "paper-column.hh"
 #include "align-interface.hh"
 #include "span-bar.hh"
@@ -16,73 +15,66 @@
 
 class Vertical_align_engraver : public Engraver
 {
-  Spanner * valign_p_;
-  bool qualifies_b (Score_element_info) const;  
+  Spanner * valign_;
+  bool qualifies_b (Grob_info) const;  
 public:
-  VIRTUAL_COPY_CONS(Translator);
-  
-  Vertical_align_engraver();
+  TRANSLATOR_DECLARATIONS(Vertical_align_engraver);
 protected:
-  
-  virtual void acknowledge_element (Score_element_info);
-  virtual void do_creation_processing();
-  virtual void do_removal_processing();
+  virtual void acknowledge_grob (Grob_info);
+  virtual void process_music ();
+  virtual void finalize ();
 };
 
-Vertical_align_engraver::Vertical_align_engraver()
+Vertical_align_engraver::Vertical_align_engraver ()
 {
-  valign_p_ =0;
+  valign_ =0;
 }
 
 void
-Vertical_align_engraver::do_creation_processing()
+Vertical_align_engraver::process_music ()
 {
-  valign_p_ =new Spanner (SCM_EOL); // todo -> basic props
-  Align_interface::set_interface (valign_p_);
-  Align_interface::set_axis (valign_p_,Y_AXIS);
-  valign_p_->set_elt_property ("stacking-dir",
-                              gh_int2scm (DOWN));
-  
-  valign_p_->set_bound(LEFT,unsmob_element (get_property ("currentCommandColumn")));
-  announce_element (Score_element_info (valign_p_ , 0));
+  if (!valign_)
+    {
+      valign_ =make_spanner ("VerticalAlignment");
+      valign_->set_bound (LEFT,unsmob_grob (get_property ("currentCommandColumn")));
+      announce_grob (valign_ , SCM_EOL);
+    }
 }
 
 void
-Vertical_align_engraver::do_removal_processing()
+Vertical_align_engraver::finalize ()
 {
-  SCM min = get_property ("maxVerticalAlign");
-  SCM max = get_property ("minVerticalAlign");
-
-  if (gh_number_p (min) || gh_number_p (max))
+  if (valign_)
     {
-      min = gh_number_p (min) ? min : gh_double2scm (0.0);
-      max = gh_number_p (max) ? max : gh_double2scm (infinity_f);    
-    
-      valign_p_->set_elt_property ("threshold",
-                                  gh_cons (min,max));
+      valign_->set_bound (RIGHT,unsmob_grob (get_property ("currentCommandColumn")));
+      typeset_grob (valign_);
+      valign_ =0;
     }
-  valign_p_->set_bound(RIGHT,unsmob_element (get_property ("currentCommandColumn")));
-  typeset_element (valign_p_);
-  valign_p_ =0;
 }
 
-
 bool
-Vertical_align_engraver::qualifies_b (Score_element_info i) const
+Vertical_align_engraver::qualifies_b (Grob_info i) const
 {
-  int sz = i.origin_trans_l_arr ((Translator*)this).size()  ;
+  int sz = i.origin_transes ((Translator*)this).size ()  ;
 
-  return sz > 1 && Axis_group_interface::has_interface (i.elem_l_)
-    && !i.elem_l_->parent_l (Y_AXIS) && Axis_group_interface::axis_b (i.elem_l_, Y_AXIS);
+  return sz > 1 && Axis_group_interface::has_interface (i.grob_)
+    && !i.grob_->get_parent (Y_AXIS) && Axis_group_interface::axis_b (i.grob_, Y_AXIS);
 }
 
 void
-Vertical_align_engraver::acknowledge_element (Score_element_info i)
+Vertical_align_engraver::acknowledge_grob (Grob_info i)
 {
   if (qualifies_b (i))
     {
-      Align_interface::add_element (valign_p_,i.elem_l_);
+      Align_interface::add_element (valign_,i.grob_, get_property ("verticalAlignmentChildCallback"));
     }
 }
 
-ADD_THIS_TRANSLATOR(Vertical_align_engraver);
+
+ENTER_DESCRIPTION(Vertical_align_engraver,
+/* descr */       "Catch Vertical axis groups and stack them.",
+/* creats*/       "VerticalAlignment",
+/* accepts */     "",
+/* acks  */      "axis-group-interface",
+/* reads */       "",
+/* write */       "");