Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

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

diff --git a/lily/include/spanner.hh b/lily/include/spanner.hh
index 24176326d3084e22f013a0b46fc49045e33c68a5..a5ecd3dae92c451a259a45b2fa92f2702d63c651 100644 (file)
--- a/lily/include/spanner.hh
+++ b/lily/include/spanner.hh
@@ -1,7 +1,20 @@
 /*
-  spanner.hh -- part of GNU LilyPond
+  This file is part of LilyPond, the GNU music typesetter.
 
-  (c) 1996--2009 Han-Wen Nienhuys
+  Copyright (C) 1996--2015 Han-Wen Nienhuys
+
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #ifndef SPANNER_HH
@@ -26,22 +39,31 @@
     is absolutely necessary for beams, since they have to adjust the
     length of stems of notes they encompass.
 */
-class Spanner : public Grob
+
+struct Preinit_Spanner
 {
   Drul_array<Item *> spanned_drul_;
+  SCM pure_property_cache_;
+  Preinit_Spanner ();
+};
+
+class Spanner : Preinit_Spanner, public Grob
+{
   vsize break_index_;
 
-  DECLARE_CLASSNAME(Spanner);
+  DECLARE_CLASSNAME (Spanner);
 
 public:
   DECLARE_SCHEME_CALLBACK (set_spacing_rods, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_normalized_endpoints, (SCM));
   DECLARE_SCHEME_CALLBACK (bounds_width, (SCM));
+  DECLARE_SCHEME_CALLBACK (kill_zero_spanned_time, (SCM));
 
-  vector<Spanner*> broken_intos_;
+  vector<Spanner *> broken_intos_;
 
   vsize get_break_index () const;
   Spanner *broken_neighbor (Direction d) const;
-  
+
   // todo: move to somewhere else.
   Real get_broken_left_end_align () const;
   void substitute_one_mutable_property (SCM sym, SCM val);
@@ -61,9 +83,11 @@ public:
   static bool less (Spanner *const &, Spanner *const &);
   virtual Grob *find_broken_piece (System *) const;
   virtual void derived_mark () const;
-  DECLARE_GROB_INTERFACE();
   virtual System *get_system () const;
 
+  SCM get_cached_pure_property (SCM sym, int start, int end);
+  void cache_pure_property (SCM sym, int start, int end, SCM value);
+
 protected:
   void set_my_columns ();
   virtual Grob *clone () const;
@@ -74,5 +98,4 @@ protected:
 void add_bound_item (Spanner *, Grob *);
 
 bool spanner_less (Spanner *s1, Spanner *s2);
-int broken_spanner_index (Spanner const *sp);
 #endif