lily/staff-gravs.cc

   1 /*
   2   staff-gravs.cc -- implement Staff_engravers
   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.hh"
  10 #include "staff-gravs.hh"
  11 #include "command-request.hh"
  12 #include "bar.hh"
  13 #include "debug.hh"
  14 #include "staffline.hh"
  15
  16
  17 Staff_engravers::Staff_engravers()
  18 {
  19     staffline_p_ =0;
  20 }
  21
  22 void
  23 Staff_engravers::typeset_element(Score_elem *elem_p)
  24 {
  25     staff_elem_l_arr_.push(elem_p);
  26     Engraver_group_engraver::typeset_element(elem_p);
  27 }
  28
  29 void
  30 Staff_engravers::typeset_breakable_item( Item * nobreak_p)
  31 {
  32     staff_elem_l_arr_.push(nobreak_p);
  33     Engraver_group_engraver::typeset_breakable_item(nobreak_p);
  34 }
  35
  36 void
  37 Staff_engravers::do_pre_move_processing()
  38 {
  39     Engraver_group_engraver::do_pre_move_processing();
  40     group_staff_elems();
  41 }
  42
  43 void
  44 Staff_engravers::group_staff_elems()
  45 {
  46     for (int i=0; i <staff_elem_l_arr_.size(); i++)
  47         staffline_p_->add_element(staff_elem_l_arr_[i]);
  48     staff_elem_l_arr_.set_size(0);
  49 }
  50
  51 void
  52 Staff_engravers::do_removal_processing()
  53 {
  54     /* this is a "destructor type function", first do children, then self. */
  55     Engraver_group_engraver::do_removal_processing();
  56     group_staff_elems();
  57
  58     staffline_p_->right_col_l_ = get_staff_info().command_pcol_l();
  59     Engraver::typeset_element(staffline_p_);
  60     staffline_p_ = 0;
  61 }
  62
  63 void
  64 Staff_engravers::do_creation_processing()
  65 {
  66     staffline_p_ = new Line_of_staff;
  67     staffline_p_->left_col_l_ = get_staff_info().command_pcol_l();
  68
  69     // don't broadcast to self.
  70     Engraver::announce_element(Score_elem_info(staffline_p_,0));
  71     Engraver_group_engraver::do_creation_processing();
  72 }
  73
  74
  75 IMPLEMENT_STATIC_NAME(Staff_engravers);
  76 IMPLEMENT_IS_TYPE_B1(Staff_engravers,Engraver_group_engraver);
  77 ADD_THIS_ENGRAVER(Staff_engravers);
  78