release: 1.3.12

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

diff --git a/lily/include/stem.hh b/lily/include/stem.hh
index 3a034df85e09e778f97ab6afdc467ff03bc7233d..7da90a36493009e90690d4a1ab0b6d3943364217 100644 (file)
--- a/lily/include/stem.hh
+++ b/lily/include/stem.hh
@@ -1,16 +1,18 @@
 /*
   stem.hh -- declare Stem
 
-  (c) 1996,97 Han-Wen Nienhuys
+  (c) 1996--1999 Han-Wen Nienhuys
 */
 
 #ifndef STEM_HH
 #define STEM_HH
+
 #include "item.hh"
-#include "varray.hh"
+#include "array.hh"
 #include "moment.hh"
 #include "molecule.hh"
-
+#include "directional-element.hh"
+#include "stem-info.hh"
 
 /**the rule attached to the ball.
   takes care of:
@@ -26,87 +28,76 @@
   TODO.
   
   Stem size depends on flag.
-  */
-class Stem : public Item {
-
-  Molecule abbrev_mol () const;
-    
-  Drul_array<Real> yextent_drul_;
-    
-  /// needed for determining direction/length
-  int staff_size_i_;
-
-  /**extent of the stem (positions).
-    fractional, since Beam has to adapt them.
-    */
 
+  elt properties:
 
-  /**
-    geen gedonder, jij gaat onder.
-    -1 stem points down, +1: stem points up
-    */
-  Direction  stem_xdir_;
+  beam_dir: direction of the beam (int)
 
-  Link_array<Note_head> head_l_arr_;
-  Link_array<Rest> rest_l_arr_;
-    
-public:
-  /// abbrev flag? + count
-  int abbrev_flag_i_;
+  dir_force: is direction explicitely specified? (bool)
 
   /// how many abbrev beam don't reach stem?
   int beam_gap_i_;
 
+
+  
+  */
+class Stem : public Item,
+            public Directional_element
+{
+
+  /**extent of the stem (positions).
+    fractional, since Beam has to adapt them.
+    */
+  Interval yextent_;
+
+public:
   /// log of the duration. Eg. 4 -> 16th note -> 2 flags
-  int flag_i_;
+  int flag_i () const;
 
+  int beam_count (Direction) const;
+  void set_beaming (int,  Direction d);
   /** 
     don't print flag when in beam.
     our beam, for aligning abbrev flags
    */
-  Beam* beam_l_;
-
-  int beams_left_i_;
-  int beams_right_i_;
-
-  Direction dir_;
-    
-  /* *************** */
+  Beam* beam_l () const;
+  Note_head * first_head () const;
+  Score_element * support_head () const;
   Stem ();
-    
   /// ensure that this Stem also encompasses the Notehead #n#
-  void add (Rhythmic_head*n);
+  void add_head (Rhythmic_head*n);
 
-  DECLARE_MY_RUNTIME_TYPEINFO;
+  Real hpos_f () const;
+  Stem_info calc_stem_info () const;
 
-  Real hpos_f() const;
+  Real chord_start_f () const;
   
   int type_i () const;
-
-  void do_print() const;
   void set_stemend (Real);
-  Direction get_default_dir();
-  int get_center_distance_from_top();
-  int get_center_distance_from_bottom();
-  void set_default_dir();
+  Direction get_default_dir() const;
+
+  int get_center_distance(Direction) const;
+
   void set_default_stemlen();
   void set_default_extents();
   void set_noteheads();
 
-  Real stem_length_f() const;
   Real stem_end_f() const;
-  Real stem_start_f() const;
+  Real stem_begin_f() const;
   Real note_delta_f () const;
 
   bool invisible_b() const;
     
   /// heads that the stem encompasses (positions)
-  int max_head_i() const;
-  int min_head_i() const;
+  Interval_t<int> head_positions() const;
+
 protected:
-  virtual void do_substitute_dependency (Score_elem*,Score_elem*);
+  Molecule flag () const;
+
   virtual void do_pre_processing();
-  virtual Interval do_width() const;
-  Molecule* brew_molecule_p() const;
+  static Interval dim_callback (Dimension_cache const*);
+  virtual Molecule* do_brew_molecule_p() const;
+
+  void set_spacing_hints () ;
 };
 #endif