``slikken kreng''

[lilypond.git] / lily / dot-column-engraver.cc

diff --git a/lily/dot-column-engraver.cc b/lily/dot-column-engraver.cc
index 04ae0bfba46d236bd4210ce3a6eaa1321549916a..10fd4a54484beacbe78928ac65b3720f50a00fe6 100644 (file)
--- a/lily/dot-column-engraver.cc
+++ b/lily/dot-column-engraver.cc
@@ -3,52 +3,87 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
-#include "dot-column-engraver.hh"
+
 #include "rhythmic-head.hh"
 #include "dot-column.hh"
+#include "side-position-interface.hh"
+#include "engraver.hh"
+#include "stem.hh"
+
+class Dot_column_engraver : public Engraver
+{
+  Grob *dotcol_ ;
+  Grob * stem_;
+  Link_array<Item> heads_;
+public:
+  TRANSLATOR_DECLARATIONS(
+  Dot_column_engraver );
+  
+protected:
+  virtual void acknowledge_grob (Grob_info);
+  virtual void stop_translation_timestep ();  
+};
+
 
 Dot_column_engraver::Dot_column_engraver ()
 {
-  dotcol_p_ =0;
+  dotcol_ =0;
+  stem_ = 0;
 }
 
 void
-Dot_column_engraver::do_pre_move_processing ()
+Dot_column_engraver::stop_translation_timestep ()
 {
-  if (dotcol_p_)
+  if (dotcol_)
     {
-      typeset_element (dotcol_p_);
-      dotcol_p_ =0;
+
+      /*
+       Add the stem to the support so dots stay clear of flags.
+
+       See [Ross, p 171]
+       */
+      if (stem_)
+       dotcol_->set_grob_property ("stem", stem_->self_scm ());
+      
+      typeset_grob (dotcol_);
+      dotcol_ =0;
     }
-  head_l_arr_.clear ();
+  heads_.clear ();
+  stem_ =0;
 }
 
 void
-Dot_column_engraver::acknowledge_element (Score_element_info info)
+Dot_column_engraver::acknowledge_grob (Grob_info info)
 {
-  Item * i=info.elem_l_->access_Item ();
-  
-  if (! (i && i->is_type_b (Rhythmic_head::static_name ())))
-      return;
-
-  Rhythmic_head * h = (Rhythmic_head*)i;
-  
-  if (!h->dots_l_)
-    return;
+  Grob *d = unsmob_grob (info.grob_->get_grob_property ("dot"));
+  if (d)
+    {
+      if (!dotcol_)
+       {
+         dotcol_ = new Item (get_property ("DotColumn"));
+         announce_grob(dotcol_, SCM_EOL);
+       }
 
-  if (!dotcol_p_)
+      Dot_column::add_head (dotcol_, info.grob_);
+    }
+  else if (Stem::has_interface (info.grob_))
     {
-      dotcol_p_ = new Dot_column;
-      announce_element (Score_element_info (dotcol_p_, 0));
+      stem_ = info.grob_;
     }
-
-  dotcol_p_->add_head (h);
 }
 
 
-ADD_THIS_TRANSLATOR(Dot_column_engraver);
-IMPLEMENT_IS_TYPE_B1(Dot_column_engraver,Engraver);
+
+
+ENTER_DESCRIPTION(Dot_column_engraver,
+/* descr */       " Engraves dots on dotted notes shifted to the right of the note.
+If omitted, then dots appear on top of the notes.
+",
+/* creats*/       "DotColumn",
+/* acks  */       "rhythmic-head-interface dot-column-interface stem-interface",
+/* reads */       "",
+/* write */       "");