release: 1.3.28

[lilypond.git] / lily / include / item.hh

diff --git a/lily/include/item.hh b/lily/include/item.hh
index 524c6772e1bf248d1ffb9f9f25b723289c477430..c4b3dfbad3d6ca56efe42be084b1de3def0a7e2b 100644 (file)
--- a/lily/include/item.hh
+++ b/lily/include/item.hh
@@ -3,16 +3,17 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 #ifndef ITEM_HH
 #define ITEM_HH
 
 
-#include "boxes.hh"
+#include "box.hh"
 #include "string.hh"
-#include "score-elem.hh"
+#include "score-element.hh"
 #include "drul-array.hh"
+#include "protected-scm.hh"
 
 /**
   A horizontally fixed size element of the score.
@@ -23,34 +24,50 @@
   NB. This doesn't mean an Item has to initialize the output field before
   spacing calculation. 
   
-*/
-class Item : public virtual Score_elem {
+
+  
+  @signature
+  visibility_lambda :: int -> (bool . bool)
+     
+  @in
+  break direction
+     
+  @out
+  (transparent, empty) cons
+     
+   */
+class Item : public virtual Score_element {
+  void do_break ();
+  void try_visibility_lambda ();
 public:
-  Link_array<Spanner> attached_span_l_arr_;
+  /*
+    ugh.
+   */
   Drul_array<Item*> broken_to_drul_;
 
-  /// should be put in a breakable col.
-  bool breakable_b_;
-  int break_status_i_;
-  /// nobreak = 0, pre = -1, post = 1
-  int break_status_i() const;
-  Item * find_prebroken_piece (int) const;
-  Item * find_prebroken_piece (Line_of_score*) const;    
 
-  virtual Item *item() { return this; }
+public:
+
+  /// I am really to be broken?
+  bool breakable_b () const;
+  bool broken_b () const;
+  
+  Direction break_status_dir () const;
+  
+  Item * find_broken_piece (Direction) const;
+  Score_element * find_broken_piece (Line_of_score*) const;    
+
   Item();
   Real hpos_f() const;
-  DECLARE_MY_RUNTIME_TYPEINFO;
+  
   virtual Line_of_score * line_l() const;
+  virtual Paper_column * column_l () const;
     
   static int left_right_compare (Item const *, Item const*);
+  
+  Item (Item const &);
 protected:
-  virtual void do_unlink ();
-  virtual void do_junk_links();
-  virtual void  do_breakable_col_processing();
-  virtual void handle_prebroken_dependencies();
-  virtual void do_print() const;
-  virtual bool linked_b() const;
+  virtual void do_breakable_col_processing();
 
   void copy_breakable_items();
 };