lily/score-halign-grav.cc

   1 /*
   2   score-halign-reg.cc -- implement Score_horizontal_align_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 "bar.hh"
  10 #include "break-align-item.hh"
  11 #include "score-halign-grav.hh"
  12 #include "score-align-grav.hh"
  13
  14 Score_horizontal_align_engraver::Score_horizontal_align_engraver()
  15 {
  16   halign_p_ =0;
  17 }
  18
  19 void
  20 Score_horizontal_align_engraver::do_pre_move_processing()
  21 {
  22   if (halign_p_)
  23     {
  24       typeset_element (halign_p_);
  25       halign_p_ =0;
  26     }
  27 }
  28
  29 void
  30 Score_horizontal_align_engraver::acknowledge_element (Score_elem_info i)
  31 {
  32   Engraver* reg = i.origin_grav_l_arr_[0];
  33   if (reg->is_type_b (Type_align_engraver::static_name()))
  34     {
  35       Type_align_engraver * align_grav_l = (Type_align_engraver*) reg;
  36       if (!halign_p_)
  37         {
  38           halign_p_ = new Break_align_item;
  39           halign_p_->breakable_b_ = true;
  40           announce_element (Score_elem_info (halign_p_,0));
  41         }
  42       Item * it = i.elem_l_->item();
  43       if (align_grav_l->type_ch_C_ == Bar::static_name())
  44         halign_p_->center_l_ = it;
  45
  46       halign_p_->add (it, align_grav_l->priority_i_);
  47     }
  48 }
  49
  50 IMPLEMENT_IS_TYPE_B1(Score_horizontal_align_engraver,Engraver);
  51 ADD_THIS_TRANSLATOR(Score_horizontal_align_engraver);