release: 1.3.4

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

diff --git a/lily/include/stem.hh b/lily/include/stem.hh
index 34776ea49cec6b45965221871b18e516d3d28f0a..411848696b843cac8d8ba4db0e8df5da1d59a553 100644 (file)
--- a/lily/include/stem.hh
+++ b/lily/include/stem.hh
@@ -1,15 +1,17 @@
 /*
   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 "staff-symbol-referencer.hh"
+#include "directional-element.hh"
 
 /**the rule attached to the ball.
   takes care of:
@@ -19,63 +21,88 @@
   \item the flag
   \item up/down position.
   \end{itemize}
-  */
 
-struct Stem : Item {
-    /// heads that the stem encompasses (positions)
-    int minnote, maxnote;
+  should move beam_{left, right} into Beam
 
-    /// false if in beam
-    bool print_flag;
-    
-    int beams_left;
-    int beams_right;
-    
-    /// needed for determining direction/length
-    int staff_center;
+  TODO.
+  
+  Stem size depends on flag.
 
+  elt properties:
 
-    /**extent of the stem (positions).
-      fractional, since Beam has to adapt them.
-      */
+  beam_dir: direction of the beam (int)
 
-    Real bot, top;
-    Real stemlen;
-    
-    /// flagtype? 4 none, 8 8th flag, 0 = beam.
-    int flag;
+  dir_force: is direction explicitely specified? (bool)
+
+  /// how many abbrev beam don't reach stem?
+  int beam_gap_i_;
 
 
-    /**
-      geen gedonder, jij gaat onder.
-       -1 stem points down, +1: stem points up
-       */
+  
+  */
+// todo: remove baseclass Staff_symbol_referencer, since stem
+// can be across a staff.
+class Stem : public Item, public Staff_symbol_referencer,
+            public Directional_element
+{
+
+  /**extent of the stem (positions).
+    fractional, since Beam has to adapt them.
+    */
+  Drul_array<Real> yextent_drul_;
 
-    int dir;
-    Real stem_xoffset;
+public:
+
+  Link_array<Note_head> head_l_arr_;
+  Link_array<Rest> rest_l_arr_;
     
-    Array<Notehead*> heads;
+  /// 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_;
 
-    /* *************** */
-    Stem(int center); //, Moment duration);
+  Drul_array<int> beams_i_drul_;
+  Stem ();
     
-    /// ensure that this Stem also encompasses the Notehead #n#
-    void add(Notehead*n);
+  /// ensure that this Stem also encompasses the Notehead #n#
+  void add_head (Rhythmic_head*n);
+
+  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() const;
 
-    NAME_MEMBERS(Stem);
+  int get_center_distance(Direction) const;
 
-    Real hindex()const;
-    void do_print() const;
-    void set_stemend(Real);
-    int get_default_dir();
-    void set_default_dir();
-    void set_default_stemlen();
-    void set_default_extents();
-    void set_noteheads();
-    void do_pre_processing();
+  void set_default_stemlen();
+  void set_default_extents();
+  void set_noteheads();
+
+  Real stem_length_f() const;
+  Real stem_end_f() const;
+  Real stem_begin_f() const;
+  Real note_delta_f () const;
+
+  bool invisible_b() const;
+    
+  /// heads that the stem encompasses (positions)
+  Interval_t<int> head_positions() const;
 
-    Interval width() const;
+protected:
+  Molecule flag () const;
+  virtual void do_substitute_element_pointer (Score_element*,Score_element*);
+  virtual void do_pre_processing();
+  virtual Interval do_width() const;
+  virtual Molecule* do_brew_molecule_p() const;
 
-    Molecule* brew_molecule_p() const;
+  void set_spacing_hints () ;
 };
 #endif