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         typeset_element(halign_p_);
  24         halign_p_ =0;
  25     }
  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(
  34         Score_align_engraver::static_name()) )
  35     {
  36         Score_align_engraver * align_grav_l = (Score_align_engraver*) reg;
  37         if (!halign_p_) {
  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_ENGRAVER(Score_horizontal_align_engraver);