lily/staff-side.cc

   1 /*
   2   staff-side.cc -- implement Staff_side
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "staff-side.hh"
  10 #include "staff-sym.hh"
  11
  12 void
  13 Staff_side::set_staffsym(Staff_symbol* s_l)
  14 {
  15     staff_sym_l_ = s_l;
  16 }
  17
  18 Staff_side::Staff_side(Staff_elem * elem_l)
  19 {
  20     elem_l_ = elem_l;
  21     dir_i_ =0;
  22     staff_sym_l_ =0;
  23     inside_staff_b_ =false;
  24 }
  25
  26
  27 Interval
  28 Staff_side::support_height() const return r;
  29 {
  30     for (int i=0; i < support_l_arr_.size(); i++)
  31         r.unite(support_l_arr_[i]->height());
  32 }
  33
  34 void
  35 Staff_side::add_support(Staff_elem*i)
  36 {
  37     support_l_arr_.push(i);
  38     elem_l_->add_dependency(i);
  39 }
  40
  41 int
  42 Staff_side::get_position_i()const
  43 {
  44     if (!staff_sym_l_)
  45         return 0;
  46
  47     Real inter_f = staff_sym_l_->inter_note_f();
  48     int staff_size_i = staff_sym_l_->steps_i();
  49     Real y=0;
  50     if (!inside_staff_b_) {
  51         y  = (dir_i_ > 0) ? staff_size_i + 2: -2;
  52         y *=inter_f;
  53         Interval v= support_height();
  54
  55         if (dir_i_ > 0) {
  56             y = y >? (v.max() + 2*inter_f);
  57         } else if (dir_i_ < 0) {
  58             y = y <? (v.min() - 2*inter_f);
  59         }
  60     } else {
  61         Interval v= support_height();
  62         y = v[dir_i_]  + 2*dir_i_*inter_f;      // ugh
  63     }
  64     return int(rint(Real(y)/inter_f));
  65 }