lily/rest-engraver.cc

   1 /*
   2   rest-grav.cc -- implement Rest_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include "staff-symbol-referencer.hh"
   9 #include "rest-engraver.hh"
  10 #include "musical-request.hh"
  11 #include "dots.hh"
  12 #include "rest.hh"
  13
  14 /*
  15   Should merge with Note_head_engraver
  16  */
  17 Rest_engraver::Rest_engraver ()
  18 {
  19   rest_req_l_ =0;
  20   rest_p_ =0;
  21   dot_p_ =0;
  22 }
  23
  24 void
  25 Rest_engraver::do_post_move_processing ()
  26 {
  27   rest_req_l_ =0;
  28 }
  29
  30 void
  31 Rest_engraver::do_pre_move_processing ()
  32 {
  33   if (rest_p_)
  34     {
  35       typeset_element (rest_p_);
  36       rest_p_ =0;
  37     }
  38   if (dot_p_)
  39     {
  40       typeset_element (dot_p_);
  41       dot_p_ =0;
  42     }
  43 }
  44
  45 void
  46 Rest_engraver::do_process_music ()
  47 {
  48   if (rest_req_l_ && !rest_p_)
  49     {
  50       rest_p_ = new Rest (get_property ("basicRestProperties"));
  51       Staff_symbol_referencer_interface si (rest_p_);
  52       si.set_interface ();
  53
  54       rest_p_->set_elt_property ("duration-log",
  55                                  gh_int2scm (rest_req_l_->duration_.durlog_i_));
  56
  57       if (rest_req_l_->duration_.dots_i_)
  58         {
  59           dot_p_ = new Item (get_property ("basicDotsProperties"));
  60
  61           Staff_symbol_referencer_interface si (dot_p_);
  62           si.set_interface ();
  63
  64           rest_p_->add_dots (dot_p_);
  65           dot_p_->set_elt_property ("dot-count",
  66                                     gh_int2scm (rest_req_l_->duration_.dots_i_));
  67           announce_element (Score_element_info (dot_p_,0));
  68         }
  69
  70       announce_element (Score_element_info (rest_p_, rest_req_l_));
  71     }
  72 }
  73
  74 bool
  75 Rest_engraver::do_try_music (Music *req)
  76 {
  77   if (Rest_req *r = dynamic_cast <Rest_req *> (req))
  78     {
  79       rest_req_l_ = r;
  80       return true;
  81     }
  82   return false;
  83 }
  84
  85
  86 ADD_THIS_TRANSLATOR(Rest_engraver);