lily/rest-collision-grav.cc

   1 /*
   2   rest-collision-reg.cc -- implement Rest_collision_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 "debug.hh"
  10 #include "rest-collision.hh"
  11 #include "rest-collision-grav.hh"
  12 #include "collision.hh"
  13 #include "rest-column.hh"
  14 #include "note-column.hh"
  15
  16
  17 IMPLEMENT_IS_TYPE_B1(Rest_collision_engraver, Engraver);
  18 ADD_THIS_ENGRAVER(Rest_collision_engraver);
  19
  20 Rest_collision_engraver::Rest_collision_engraver()
  21 {
  22     rest_collision_p_ =0;
  23 }
  24
  25 void
  26 Rest_collision_engraver::acknowledge_element(Score_elem_info i)
  27 {
  28     char const * nC = i.elem_l_->name();
  29     if (nC == Collision::static_name()) {
  30         collision_l_arr_.push((Collision*)i.elem_l_->item());
  31     }
  32     else if (nC == Note_column::static_name()) {
  33         // what should i do, what should _engraver do?
  34         if (!rest_collision_p_) {
  35             rest_collision_p_ = new Rest_collision;
  36             announce_element(Score_elem_info(rest_collision_p_, 0));
  37         }
  38         rest_collision_p_->add((Note_column*)i.elem_l_->item());
  39     }
  40     else if (nC == Rest_column::static_name()) {
  41         if (!rest_collision_p_)
  42             rest_collision_p_ = new Rest_collision;
  43         rest_collision_p_->add((Rest_column*)i.elem_l_->item());
  44     }
  45 }
  46
  47 void
  48 Rest_collision_engraver::do_pre_move_processing()
  49 {
  50     if (rest_collision_p_) {
  51         typeset_element(rest_collision_p_);
  52         rest_collision_p_ = 0;
  53     }
  54 }
  55
  56 void
  57 Rest_collision_engraver::do_print() const
  58 {
  59 #ifndef NPRINT
  60     if ( rest_collision_p_ )
  61         rest_collision_p_->print();
  62 #endif
  63 }