lily/note-head.cc

   1 /*
   2   notehead.cc -- implement Note_head
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "misc.hh"
  10 #include "dots.hh"
  11 #include "note-head.hh"
  12 #include "debug.hh"
  13 #include "lookup.hh"
  14 #include "molecule.hh"
  15 #include "musical-request.hh"
  16 #include "dimension-cache.hh"
  17 #include "staff-symbol-referencer.hh"
  18
  19
  20
  21
  22 void
  23 Note_head::do_pre_processing ()
  24 {
  25   // 8 ball looks the same as 4 ball:
  26   String type;
  27   SCM style  = get_elt_property ("style");
  28   if (gh_string_p (style))
  29     {
  30       type = ly_scm2string (style);
  31     }
  32
  33
  34   if (balltype_i () > 2 || type == "harmonic" || type == "cross")
  35     set_elt_property ("duration-log", gh_int2scm (2));
  36
  37   if (Dots *d = dots_l ())
  38     { // move into Rhythmic_head?
  39       Staff_symbol_referencer_interface si (d);
  40       Staff_symbol_referencer_interface me (this);
  41
  42       si.set_position(int (me.position_f ()));
  43     }
  44 }
  45
  46
  47
  48
  49 Molecule*
  50 Note_head::do_brew_molecule_p() const
  51 {
  52   Staff_symbol_referencer_interface si (this);
  53
  54   Real inter_f = si.staff_space ()/2;
  55   int sz = si.line_count ()-1;
  56   Real p = si.position_f ();
  57   int streepjes_i = abs (p) < sz
  58     ? 0
  59     : (abs((int)p) - sz) /2;
  60
  61  String type;
  62   SCM style  = get_elt_property ("style");
  63   if (gh_string_p (style))
  64     {
  65       type = ly_scm2string (style);
  66     }
  67
  68   Molecule*  out =
  69     new Molecule (lookup_l()->afm_find (String ("noteheads-") + to_str (balltype_i ()) + type));
  70
  71   Box ledgerless = out->dim_;
  72
  73   if (streepjes_i)
  74     {
  75       Direction dir = (Direction)sign (p);
  76       Interval hd = out->dim_[X_AXIS];
  77       Real hw = hd.length ()/4;
  78
  79       Molecule ledger
  80         = lookup_l ()->ledger_line  (Interval (hd[LEFT] - hw,
  81                                                hd[RIGHT] + hw));
  82
  83       int parity =  abs(int (p)) % 2;
  84
  85       for (int i=0; i < streepjes_i; i++)
  86         {
  87           Molecule s (ledger);
  88           s.translate_axis (-dir * inter_f * (i*2 + parity),
  89                            Y_AXIS);
  90           out->add_molecule (s);
  91         }
  92     }
  93
  94   out->dim_ = ledgerless;
  95   return out;
  96 }
  97