release: 1.5.45

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

diff --git a/lily/include/spanner.hh b/lily/include/spanner.hh
index df5e9e58e9c1bab72434d01d6a74f1480e1d5e6a..ebf5af6a8629e56940ef7a841532cdd4928c7f41 100644 (file)
--- a/lily/include/spanner.hh
+++ b/lily/include/spanner.hh
@@ -1,57 +1,70 @@
 /*
-  spanner.hh -- part of LilyPond
+  spanner.hh -- part of GNU LilyPond
 
-  (c) 1996,97 Han-Wen Nienhuys
+  (c) 1996--2002 Han-Wen Nienhuys
 */
 
 #ifndef SPANNER_HH
 #define SPANNER_HH
 
-#include "proto.hh"
-#include "staff-elem.hh"
+#include "lily-proto.hh"
+#include "grob.hh"
+#include "drul-array.hh"
+#include "rod.hh"
 
-
-/** a symbol which is attached between two columns. A spanner is a
+/** A symbol which is attached between two columns. A spanner is a
   symbol which spans across several columns, so its final appearance
   can only be calculated after the breaking problem is solved.
 
   Examples
 
-  \begin{itemize}
-  \item (de)crescendo
-  \item slur
-  \item beam
-  \item bracket
-  \end{itemize}
-  
+  * (de)crescendo
+  * slur
+  * beam
+  * bracket
 
   Spanner should know about the items which it should consider:
   e.g. slurs should be steep enough to "enclose" all those items. This
   is absolutely necessary for beams, since they have to adjust the
   length of stems of notes they encompass.
 
-    */
-class Spanner:public virtual Score_elem {
+  */
+class Spanner : public  Grob {
+  Drul_array<Item*> spanned_drul_;
+
 public:
-    PCol *left_col_l_, *right_col_l_;
-
-    
-    /* *************** */
-    NAME_MEMBERS(Spanner);
-    virtual Spanner* spanner() { return this; }    
-    Spanner();
-    Spanner *broken_at(PCol *c1,  PCol *c2) const;
-protected:
+  DECLARE_SCHEME_CALLBACK (set_spacing_rods, (SCM ));
+  
+  Link_array<Spanner> broken_into_l_arr_;
 
-    virtual Interval do_width()const;
-    void do_print()const;
+  // todo: move to somewhere else.
+  Real get_broken_left_end_align () const;
+  
+  // TODO: make virtual and do this for Items as well.
+  Interval_t<int> spanned_rank_iv ();
+  void set_bound (Direction d, Grob*);
+  Item *get_bound (Direction d) const;
+  
+  Spanner (SCM);
+  Spanner (Spanner const &);
+  bool broken_b () const;
+  void do_break ();
+  Real spanner_length () const;
 
+  static int compare (Spanner * const &,Spanner * const &);
+  virtual Grob* find_broken_piece (System*) const;
+  virtual SCM do_derived_mark ();
+protected:
+  void set_my_columns ();
 
-    /**
-      clone a piece of  this spanner.
-      PRE
-      c1 >= start, c2  <= stop
-    */
-    virtual Spanner *do_break_at( PCol *c1,  PCol *c2) const=0;
+  VIRTUAL_COPY_CONS (Grob);
+  virtual void do_break_processing ();
+  virtual System*line_l () const;
 };
+
+
+void add_bound_item (Spanner*, Item* n);
+void extend_spanner_over_elements (Grob*  span);
+
+
 #endif