lily/staff-sym-grav.cc

   1 /*
   2   staff-sym-reg.cc -- implement Staff_sym_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "staff-sym-grav.hh"
  10 #include "staff-sym.hh"
  11 #include "score.hh"
  12 #include "p-col.hh"
  13
  14 const NO_LINES = 5;
  15 void
  16 Staff_sym_engraver::fill_staff_info(Staff_info&i)
  17 {
  18     i.staff_sym_l_ = span_p_;
  19 }
  20
  21 Staff_sym_engraver::~Staff_sym_engraver()
  22 {
  23     assert( !span_p_);
  24 }
  25
  26 Staff_sym_engraver::Staff_sym_engraver()
  27 {
  28    span_p_ = 0;
  29 }
  30
  31 void
  32 Staff_sym_engraver::do_creation_processing()
  33 {
  34     span_p_ = new Staff_symbol(NO_LINES);
  35     span_p_->left_col_l_ = get_staff_info().command_pcol_l(); // ugh
  36 }
  37
  38 void
  39 Staff_sym_engraver::do_removal_processing()
  40 {
  41     span_p_->right_col_l_ = get_staff_info().command_pcol_l();
  42     typeset_element(span_p_);
  43     span_p_ =0;
  44 }
  45
  46 void
  47 Staff_sym_engraver::do_process_requests()
  48 {
  49     announce_element(Score_elem_info(span_p_, 0));
  50 }
  51
  52
  53 IMPLEMENT_STATIC_NAME(Staff_sym_engraver);
  54 IMPLEMENT_IS_TYPE_B1(Staff_sym_engraver,Engraver);
  55 ADD_THIS_ENGRAVER(Staff_sym_engraver);