lily/separating-line-group-grav.cc

   1 /*
   2   separating-line-group-grav.cc --  implement Separating_line_group_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998 Han-Wen Nienhuys <hanwen@cs.ruu.nl>
   7
   8  */
   9
  10 #include "separating-line-group-grav.hh"
  11 #include "separating-group-spanner.hh"
  12 #include "single-malt-grouping-item.hh"
  13 #include "p-col.hh"
  14
  15 Separating_line_group_engraver::Separating_line_group_engraver ()
  16 {
  17   sep_span_p_ = 0;
  18   break_malt_p_ = 0;
  19   nobreak_malt_p_ =0;
  20 }
  21
  22 void
  23 Separating_line_group_engraver::do_creation_processing ()
  24 {
  25   sep_span_p_ = new Separating_group_spanner;
  26   announce_element ( Score_elem_info (sep_span_p_, 0));
  27   sep_span_p_->set_bounds (LEFT, get_staff_info ().command_pcol_l ());
  28 }
  29
  30 void
  31 Separating_line_group_engraver::do_removal_processing ()
  32 {
  33   sep_span_p_->set_bounds (RIGHT, get_staff_info ().command_pcol_l ());
  34   typeset_element (sep_span_p_);
  35   sep_span_p_ =0;
  36 }
  37
  38 void
  39 Separating_line_group_engraver::acknowledge_element (Score_elem_info i)
  40 {
  41   Item * it = i.elem_l_->item ();
  42   if (it && !it->axis_group_l_a_[X_AXIS])
  43     {
  44       Single_malt_grouping_item *&p_ref_ (it->breakable_b_ ?
  45                                           break_malt_p_ : nobreak_malt_p_);
  46
  47       if (!p_ref_)
  48         {
  49           p_ref_ = new Single_malt_grouping_item;
  50           p_ref_->breakable_b_ = it->breakable_b_;
  51           announce_element (Score_elem_info (p_ref_, 0));
  52         }
  53       p_ref_->add (it);
  54     }
  55 }
  56
  57 void
  58 Separating_line_group_engraver::do_pre_move_processing ()
  59 {
  60   if (break_malt_p_)
  61     {
  62       sep_span_p_->add_spacing_unit (break_malt_p_);
  63
  64       typeset_element (break_malt_p_);
  65       break_malt_p_ =0;
  66     }
  67   if (nobreak_malt_p_)
  68     {
  69       sep_span_p_->add_spacing_unit (nobreak_malt_p_);
  70       typeset_element (nobreak_malt_p_);
  71       nobreak_malt_p_ =0;
  72     }
  73 }
  74
  75
  76 IMPLEMENT_IS_TYPE_B1 (Separating_line_group_engraver, Line_group_engraver);
  77 ADD_THIS_TRANSLATOR( Separating_line_group_engraver);