lily/staff-side.cc

   1 /*
   2   staff-side.cc -- implement Staff_side
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "interval.hh"
  10 #include "paper-def.hh"
  11 #include "dimen.hh"
  12 #include "staff-side.hh"
  13 #include "staff-sym.hh"
  14 #include "debug.hh"
  15
  16 void
  17 Staff_side::set_staffsym(Staff_symbol* s_l)
  18 {
  19     staff_sym_l_ = s_l;
  20     add_dependency( s_l );
  21 }
  22
  23 Staff_side::Staff_side()
  24 {
  25     pos_i_ =0;
  26     sym_int_ = Interval(0,0);
  27     staff_size_i_ = 0;
  28     staff_sym_l_=0;
  29     dir_i_ =0;
  30     inside_staff_b_ =false;
  31 }
  32
  33 void
  34 Staff_side::read_staff_sym()
  35 {
  36     if (! staff_sym_l_)
  37         return ;
  38     staff_size_i_ = staff_sym_l_->steps_i();
  39 }
  40
  41
  42 Interval
  43 Staff_side::support_height() const
  44 {
  45     Interval r;
  46
  47     for (int i=0; i < support_l_arr_.size(); i++)
  48         r.unite(support_l_arr_[i]->height());
  49     if (r.empty_b()) {
  50         r = Interval(0,0);
  51     }
  52     return r;
  53 }
  54
  55 void
  56 Staff_side::add_support(Score_elem*i)
  57 {
  58     support_l_arr_.push(i);
  59     add_dependency(i);
  60 }
  61
  62 int
  63 Staff_side::get_position_i()const
  64 {
  65     if (!dir_i_) {
  66         warning("Staff_side::get_position_i(): "
  67                 "somebody forgot to set my vertical direction, returning -20");
  68         return -20;
  69     }
  70
  71
  72     Real y=0;
  73     Real inter_f = paper()-> internote_f();
  74     if (!inside_staff_b_) {
  75         y  = (dir_i_ > 0 && staff_sym_l_) ? staff_sym_l_->steps_i() + 2: -2;
  76         y *=inter_f;
  77         Interval v= support_height();
  78
  79         if (dir_i_ > 0) {
  80             y = y >? (v.max() + 2*inter_f);
  81         } else if (dir_i_ < 0) {
  82             y = y <? (v.min() - 2*inter_f);
  83         }
  84     } else {
  85         Interval v= support_height();
  86         y = v[dir_i_]  + 2*dir_i_*inter_f;      // ugh
  87     }
  88     return int(rint(Real(y)/inter_f)); // should ret a float?
  89 }
  90
  91 Interval
  92 Staff_side::symbol_height() const
  93 {
  94     return Interval(0,0);
  95 }
  96
  97 void
  98 Staff_side::do_post_processing()
  99 {
 100     sym_int_ = symbol_height();
 101     pos_i_ = get_position_i( );
 102     if (dir_i_)
 103         pos_i_ += int(rint(- sym_int_[-dir_i_] / paper()->internote_f()));
 104 }
 105
 106 void
 107 Staff_side::do_substitute_dependency(Score_elem*o, Score_elem*n)
 108 {
 109     support_l_arr_.unordered_substitute(o,n);
 110     if (staff_sym_l_ == o)
 111         staff_sym_l_ = n ? (Staff_symbol*) n->spanner():0;
 112 }
 113
 114
 115 IMPLEMENT_IS_TYPE_B1(Staff_side, Score_elem);