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--2000 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   build a ledger line for small pieces.
  23  */
  24 Molecule
  25 Note_head::ledger_line (Interval xwid) const
  26 {
  27   Drul_array<Molecule> endings;
  28   endings[LEFT] = lookup_l()->afm_find ("noteheads-ledgerending");
  29   Molecule * e = &endings[LEFT];
  30   endings[RIGHT] = *e;
  31
  32   Real thick = e->dim_[Y_AXIS].length();
  33   Real len = e->dim_[X_AXIS].length () - thick;
  34
  35   Molecule total;
  36   Direction d = LEFT;
  37   do {
  38     endings[d].translate_axis (xwid[d] - endings[d].dim_[X_AXIS][d], X_AXIS);
  39     total.add_molecule (endings[d]);
  40   } while ((flip(&d)) != LEFT);
  41
  42   Real xpos = xwid [LEFT] + len;
  43
  44   while (xpos + len + thick /2 <= xwid[RIGHT])
  45     {
  46       e->translate_axis (len, X_AXIS);
  47       total.add_molecule (*e);
  48       xpos += len;
  49     }
  50
  51   return total;
  52 }
  53
  54
  55 void
  56 Note_head::do_pre_processing ()
  57 {
  58   // 8 ball looks the same as 4 ball:
  59   String type;
  60   SCM style  = get_elt_property ("style");
  61   if (gh_string_p (style))
  62     {
  63       type = ly_scm2string (style);
  64     }
  65
  66
  67   if (balltype_i () > 2 || type == "harmonic" || type == "cross")
  68     set_elt_property ("duration-log", gh_int2scm (2));
  69
  70   if (Dots *d = dots_l ())
  71     { // move into Rhythmic_head?
  72       Staff_symbol_referencer_interface si (d);
  73       Staff_symbol_referencer_interface me (this);
  74
  75       si.set_position(int (me.position_f ()));
  76     }
  77 }
  78
  79
  80
  81
  82 Molecule*
  83 Note_head::do_brew_molecule_p() const
  84 {
  85   Staff_symbol_referencer_interface si (this);
  86
  87   Real inter_f = si.staff_space ()/2;
  88   int sz = si.line_count ()-1;
  89   Real p = si.position_f ();
  90   int streepjes_i = abs (p) < sz
  91     ? 0
  92     : (abs((int)p) - sz) /2;
  93
  94  String type;
  95   SCM style  = get_elt_property ("style");
  96   if (gh_string_p (style))
  97     {
  98       type = ly_scm2string (style);
  99     }
 100
 101   Molecule*  out =
 102     new Molecule (lookup_l()->afm_find (String ("noteheads-") + to_str (balltype_i ()) + type));
 103
 104   Box ledgerless = out->dim_;
 105
 106   if (streepjes_i)
 107     {
 108       Direction dir = (Direction)sign (p);
 109       Interval hd = out->dim_[X_AXIS];
 110       Real hw = hd.length ()/4;
 111
 112       Molecule ledger (ledger_line  (Interval (hd[LEFT] - hw,
 113                                                hd[RIGHT] + hw)));
 114
 115       int parity =  abs(int (p)) % 2;
 116
 117       for (int i=0; i < streepjes_i; i++)
 118         {
 119           Molecule s (ledger);
 120           s.translate_axis (-dir * inter_f * (i*2 + parity),
 121                            Y_AXIS);
 122           out->add_molecule (s);
 123         }
 124     }
 125
 126   out->dim_ = ledgerless;
 127   return out;
 128 }
 129