Fix some bugs in the dynamic engraver and PostScript backend

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

diff --git a/lily/include/spanner.hh b/lily/include/spanner.hh
index 43a3567fa52faf609869d1d3b9bc7aa3117fa391..c64c61d6364a1f664b8a8fe334b1a32e1586636c 100644 (file)
--- a/lily/include/spanner.hh
+++ b/lily/include/spanner.hh
@@ -1,54 +1,75 @@
 /*
-  spanner.hh -- part of LilyPond
+  spanner.hh -- part of GNU LilyPond
 
-  (c) 1996,97 Han-Wen Nienhuys
+  (c) 1996--2006 Han-Wen Nienhuys
 */
 
 #ifndef SPANNER_HH
 #define SPANNER_HH
 
-#include "proto.hh"
-#include "staff-elem.hh"
+#include "grob.hh"
+#include "rod.hh"
 
+/** 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.
 
-/** 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
 
-  Examples
+    * (de)crescendo
+    * slur
+    * beam
+    * bracket
 
-  - (de)crescendo
-  - slur
-  - beam
-  - bracket
-  
-
-  Spanner should know about the items which it should consider:
+    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 Grob
+{
+  Drul_array<Item *> spanned_drul_;
+  vsize break_index_;
 
-    */
-struct Spanner:Staff_elem {
-    PCol *left, *right;
+  DECLARE_CLASSNAME(Spanner);
 
-    
-    /* *************** */
-    
-    Spanner();
-    virtual Interval width()const;
-    void do_print()const;
+public:
+  DECLARE_SCHEME_CALLBACK (set_spacing_rods, (SCM));
 
-    Spanner *broken_at(PCol *c1,  PCol *c2) const;
-    virtual Spanner* spanner() { return this; }
-protected:
+  vector<Spanner*> broken_intos_;
+
+  vsize get_break_index () const;
+
+  // todo: move to somewhere else.
+  Real get_broken_left_end_align () const;
+  void substitute_one_mutable_property (SCM sym, SCM val);
+  bool fast_substitute_grob_array (SCM sym, Grob_array *);
+
+  // 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;
 
-    /**
-  clone a piece of  this spanner.
-    PRE
-    c1 >= start, c2  <= stop
-    */
-    virtual Spanner *do_break_at( PCol *c1,  PCol *c2) const=0;
-    NAME_MEMBERS(Spanner);
+  Spanner (SCM, Object_key const *);
+  Spanner (Spanner const &, int copy_count);
+  bool is_broken () const;
+  void do_break ();
+  Real spanner_length () const;
+
+  static int compare (Spanner *const &, Spanner *const &);
+  virtual Grob *find_broken_piece (System *) const;
+  virtual void derived_mark () const;
+  static bool has_interface (Grob *);
+  virtual System *get_system () const;
+
+protected:
+  void set_my_columns ();
+  virtual Grob *clone (int count) const;
+  virtual void do_break_processing ();
 };
+
+void add_bound_item (Spanner *, Grob *);
+
+bool spanner_less (Spanner *s1, Spanner *s2);
+int broken_spanner_index (Spanner *sp);
 #endif