lily/line-group-grav.cc

   1 /*
   2   staff-gravs.cc -- implement Line_group_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.hh"
  10 #include "vertical-group-spanner.hh"
  11 #include "command-request.hh"
  12 #include "bar.hh"
  13 #include "debug.hh"
  14 #include "line-group-grav.hh"
  15
  16 Line_group_engraver::Line_group_engraver()
  17 {
  18     staffline_p_ =0;
  19 }
  20
  21 void
  22 Line_group_engraver::acknowledge_element(Score_elem_info  elem)
  23 {
  24     if ( !elem.elem_l_->axis_group_l_a_[Y_AXIS] )
  25         staffline_p_->add_element(elem.elem_l_);
  26 }
  27
  28
  29 void
  30 Line_group_engraver::do_removal_processing()
  31 {
  32     staffline_p_->right_col_l_ = get_staff_info().command_pcol_l();
  33     typeset_element(staffline_p_);
  34     staffline_p_ = 0;
  35 }
  36
  37 void
  38 Line_group_engraver::do_creation_processing()
  39 {
  40     staffline_p_ = new Vertical_group_spanner ;
  41     staffline_p_->left_col_l_ = get_staff_info().command_pcol_l();
  42
  43     // don't broadcast to self.
  44     announce_element(Score_elem_info(staffline_p_,0));
  45 }
  46
  47
  48
  49 IMPLEMENT_IS_TYPE_B1(Line_group_engraver,Engraver);
  50 ADD_THIS_ENGRAVER(Line_group_engraver);
  51