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 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8 #include "staff-sym.hh"
   9 #include "lookup.hh"
  10 #include "paper-def.hh"
  11 #include "molecule.hh"
  12 #include "debug.hh"
  13 #include "dimen.hh"
  14
  15
  16 Staff_symbol::Staff_symbol ()
  17 {
  18   no_lines_i_ = 5;
  19   interline_f_ =  0 PT;
  20 }
  21
  22
  23 IMPLEMENT_IS_TYPE_B1(Staff_symbol,Spanner);
  24
  25 void
  26 Staff_symbol::do_print() const
  27 {
  28 #ifndef NPRINT
  29   Spanner::do_print();
  30   DOUT << "lines: " << no_lines_i_;
  31 #endif
  32 }
  33
  34 Interval
  35 Staff_symbol::do_height() const
  36 {
  37   int n = no_lines_i_ -1;
  38 //  return 2* inter_note_f () * Interval (-n, n);
  39   return inter_note_f () * Interval (-n, n);
  40 }
  41
  42 Molecule*
  43 Staff_symbol::brew_molecule_p() const
  44 {
  45   Paper_def * p = paper();
  46   Atom rule  = p->lookup_l ()->rule_symbol (p->get_var ("rulethickness"),
  47                                             width ().length ());
  48   Real height = (no_lines_i_-1) * inter_note_f();
  49   Molecule * m = new Molecule;
  50   for (int i=0; i < no_lines_i_; i++)
  51     {
  52       Atom a (rule);
  53       a.translate_axis (height - i * inter_note_f()*2, Y_AXIS);
  54       m->add (a);
  55     }
  56
  57   return m;
  58 }
  59
  60 Real
  61 Staff_symbol::inter_note_f() const
  62 {
  63   if (interline_f_)
  64     return interline_f_/2;
  65
  66   return paper()->internote_f ();
  67 }
  68
  69 int
  70 Staff_symbol::steps_i() const
  71 {
  72   return no_lines_i_*2;
  73 }