lily/rest-collision-engraver.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--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "debug.hh"
  10 #include "rest-collision.hh"
  11 #include "rest-collision-engraver.hh"
  12 #include "collision.hh"
  13 #include "note-column.hh"
  14
  15
  16
  17 ADD_THIS_TRANSLATOR(Rest_collision_engraver);
  18
  19 Rest_collision_engraver::Rest_collision_engraver()
  20 {
  21   rest_collision_p_ =0;
  22 }
  23
  24 void
  25 Rest_collision_engraver::process_acknowledged ()
  26 {
  27   if (rest_collision_p_ || note_column_l_arr_.size () < 2)
  28     return;
  29
  30   rest_collision_p_ = new Rest_collision;
  31   announce_element (Score_element_info (rest_collision_p_, 0));
  32   for (int i=0; i< note_column_l_arr_.size (); i++)
  33     rest_collision_p_->add_column (note_column_l_arr_[i]);
  34 }
  35
  36 void
  37 Rest_collision_engraver::acknowledge_element (Score_element_info i)
  38 {
  39   if (dynamic_cast<Note_column *> (i.elem_l_))
  40     note_column_l_arr_.push (dynamic_cast<Note_column *> (i.elem_l_));
  41 }
  42
  43 void
  44 Rest_collision_engraver::do_pre_move_processing()
  45 {
  46   if (rest_collision_p_)
  47     {
  48       typeset_element (rest_collision_p_);
  49       rest_collision_p_ = 0;
  50     }
  51   note_column_l_arr_.clear ();
  52 }