Fix some bugs in the dynamic engraver and PostScript backend

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

diff --git a/lily/include/stem.hh b/lily/include/stem.hh
index d150eb1e76d42141279fdfa94ab55dbac5cfb879..da024edb351c87d0b0bdf75fc69c504637571c89 100644 (file)
--- a/lily/include/stem.hh
+++ b/lily/include/stem.hh
@@ -1,111 +1,55 @@
 /*
   stem.hh -- declare Stem
 
-  (c) 1996,97 Han-Wen Nienhuys
+  (c) 1996--2006 Han-Wen Nienhuys
 */
 
 #ifndef STEM_HH
 #define STEM_HH
-#include "item.hh"
-#include "varray.hh"
-#include "moment.hh"
-#include "molecule.hh"
 
+#include "std-vector.hh"
+#include "lily-proto.hh"
+#include "lily-guile.hh"
+#include "stem-info.hh"
 
-/**the rule attached to the ball.
-  takes care of:
-
-  \begin{itemize}
-  \item the rule
-  \item the flag
-  \item up/down position.
-  \end{itemize}
-
-  should move beam_{left, right} into Beam
-
-  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.
-    */
-
-
-  /**
-    geen gedonder, jij gaat onder.
-    -1 stem points down, +1: stem points up
-    */
-  Direction  stem_xdir_;
-
-  Link_array<Note_head> head_l_arr_;
-  Link_array<Rest> rest_l_arr_;
-    
+class Stem
+{
 public:
-  /// abbrev flag? + count
-  int abbrev_flag_i_;
-
-  /// how many abbrev beam don't reach stem?
-  int beam_gap_i_;
-
-  /// log of the duration. Eg. 4 -> 16th note -> 2 flags
-  int flag_i_;
-
-  /** 
-    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_;
-    
-  /* *************** */
-  Stem ();
-    
-  /// ensure that this Stem also encompasses the Notehead #n#
-  void add (Rhythmic_head*n);
-
-  DECLARE_MY_RUNTIME_TYPEINFO;
-
-  Real hpos_f() const;
+  static vector<int> note_head_positions (Grob *);
+  static int duration_log (Grob *);
+  static void set_beaming (Grob *, int, Direction d);
+  static int get_beaming (Grob *, Direction d);
+  static Spanner *get_beam (Grob *);
+  static Grob *first_head (Grob *);
+  static Grob *last_head (Grob *);
+  static Drul_array<Grob *> extremal_heads (Grob *);
+  static Grob *support_head (Grob *);
+  static void add_head (Grob *me, Grob *n);
+  static Stem_info get_stem_info (Grob *);
+  static Real chord_start_y (Grob *);
+  static void set_stemend (Grob *, Real);
+  static Slice beam_multiplicity (Grob *);
+  static Direction get_default_dir (Grob*);
+  static Real thickness (Grob *);
+  static int head_count (Grob *);
+  static bool is_invisible (Grob *);
+  static Interval head_positions (Grob *);
+  static Real stem_end_position (Grob *);
+  static Stencil flag (Grob *);
+  static Stencil get_translated_flag (Grob*);
+  static bool has_interface (Grob *);
+  static void set_spacing_hints (Grob *);
   
-  int type_i () const;
-
-  void do_print() const;
-  void set_stemend (Real);
-  Direction get_default_dir();
-
-  int get_center_distance(Direction);
-  void set_default_dir();
-  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 note_delta_f () const;
-
-  bool invisible_b() const;
-    
-  /// heads that the stem encompasses (positions)
-  Interval_t<int> head_positions() const;
-protected:
-  virtual void do_substitute_dependency (Score_elem*,Score_elem*);
-  virtual void do_pre_processing();
-  virtual Interval do_width() const;
-  Molecule* brew_molecule_p() const;
+  DECLARE_SCHEME_CALLBACK (print, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_default_direction, (SCM));
+  DECLARE_SCHEME_CALLBACK (offset_callback, (SCM element));
+  DECLARE_SCHEME_CALLBACK (calc_direction, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_beaming, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_length, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_stem_end_position, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_stem_info, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_positioning_done, (SCM));
+  DECLARE_SCHEME_CALLBACK (width, (SCM smob));
+  DECLARE_SCHEME_CALLBACK (height, (SCM));
 };
 #endif