lily/include/stem.hh

   1 /*
   2   stem.hh -- declare Stem
   3
   4   (c) 1996,97 Han-Wen Nienhuys
   5 */
   6
   7 #ifndef STEM_HH
   8 #define STEM_HH
   9 #include "item.hh"
  10 #include "varray.hh"
  11 #include "moment.hh"
  12
  13
  14 /**the rule attached to the ball.
  15   takes care of:
  16
  17   \begin{itemize}
  18   \item the rule
  19   \item the flag
  20   \item up/down position.
  21   \end{itemize}
  22
  23   should move beam_{left, right} into Beam
  24
  25   TODO.
  26
  27   Stem size depends on flag.
  28   */
  29 class Stem : public Item {
  30
  31   Real stem_bottom_f_, stem_top_f_;
  32
  33
  34   /// needed for determining direction/length
  35   int staff_size_i_;
  36
  37   /**extent of the stem (positions).
  38     fractional, since Beam has to adapt them.
  39     */
  40
  41
  42   /**
  43     geen gedonder, jij gaat onder.
  44     -1 stem points down, +1: stem points up
  45     */
  46   Real stem_xoffset_f_;
  47   /**
  48     store the wholes (for vapourware tremolo)
  49     */
  50   Link_array<Note_head> whole_l_arr_;
  51   Link_array<Note_head> head_l_arr_;
  52   Link_array<Note_head> rest_l_arr_;
  53
  54 public:
  55   /// flagtype? 4 none, 8 8th flag, 0 = beam.
  56   int flag_i_;
  57
  58   int beams_left_i_;
  59   int beams_right_i_;
  60
  61   /// false if in beam
  62   bool print_flag_b_;
  63
  64   Direction dir_;
  65
  66
  67   /* *************** */
  68   Stem ();
  69
  70   /// ensure that this Stem also encompasses the Notehead #n#
  71   void add (Note_head*n);
  72
  73   DECLARE_MY_RUNTIME_TYPEINFO;
  74
  75   Real hpos_f() const;
  76
  77   void do_print() const;
  78   void set_stemend (Real);
  79   Direction get_default_dir();
  80   int get_center_distance_from_top();
  81   int get_center_distance_from_bottom();
  82   void set_default_dir();
  83   void set_default_stemlen();
  84   void set_default_extents();
  85   void set_noteheads();
  86
  87   Real stem_length_f() const;
  88   Real stem_end_f() const;
  89   Real stem_start_f() const;
  90
  91   bool invisible_b() const;
  92
  93   /// heads that the stem encompasses (positions)
  94   int max_head_i() const;
  95   int min_head_i() const;
  96 protected:
  97   virtual void do_substitute_dependency (Score_elem*,Score_elem*);
  98   virtual void do_pre_processing();
  99   virtual Interval do_width() const;
 100   Molecule* brew_molecule_p() const;
 101 };
 102 #endif