lily/staff-sym.cc

   1 /*
   2   staffsym.cc -- implement Staff_symbol
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include "staff-sym.hh"
   9 #include "lookup.hh"
  10 #include "dimensions.hh"
  11 #include "paper-def.hh"
  12 #include "molecule.hh"
  13 #include "debug.hh"
  14 #include "item.hh"
  15
  16
  17 Staff_symbol::Staff_symbol ()
  18 {
  19   no_lines_i_ = 5;
  20   interline_f_ =  0 PT;
  21 }
  22
  23
  24
  25
  26 void
  27 Staff_symbol::do_print() const
  28 {
  29 #ifndef NPRINT
  30   Spanner::do_print();
  31   DOUT << "lines: " << no_lines_i_;
  32 #endif
  33 }
  34
  35 Interval
  36 Staff_symbol::do_height() const
  37 {
  38   int n = no_lines_i_ -1;
  39 //  return 2* inter_note_f () * Interval (-n, n);
  40   return inter_note_f () * Interval (-n, n);
  41 }
  42
  43 Molecule*
  44 Staff_symbol::brew_molecule_p() const
  45 {
  46   Real w = width ().length ();
  47   Real left_dx = -spanned_drul_[LEFT]->extent (X_AXIS)[LEFT];
  48   Real right_dx = spanned_drul_[RIGHT]->extent (X_AXIS)[RIGHT];
  49   //  w += right_dx+ left_dx;
  50
  51
  52   Paper_def * p = paper();
  53   Atom rule  = lookup_l ()->rule_symbol (p->get_var ("rulethickness"),
  54                                          w);
  55   Real height = (no_lines_i_-1) * inter_note_f();
  56   Molecule * m = new Molecule;
  57   for (int i=0; i < no_lines_i_; i++)
  58     {
  59       Atom a (rule);
  60       a.translate_axis (height - i * inter_note_f()*2, Y_AXIS);
  61       m->add_molecule (a);
  62     }
  63
  64   //  m->translate_axis (-left_dx, X_AXIS);
  65   return m;
  66 }
  67
  68 Real
  69 Staff_symbol::inter_note_f() const
  70 {
  71   if (interline_f_)
  72     return interline_f_/2;
  73
  74   return paper()->internote_f ();
  75 }
  76
  77 int
  78 Staff_symbol::steps_i() const
  79 {
  80   return no_lines_i_*2;
  81 }