lily/head-reg.cc

   1 /*
   2   headreg.cc -- part of GNU LilyPond
   3
   4   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   5 */
   6
   7 #include "note-head.hh"
   8 #include "head-reg.hh"
   9 #include "paper-def.hh"
  10 #include "musical-request.hh"
  11
  12 Note_head_register::Note_head_register()
  13 {
  14     note_p_ = 0;
  15     do_post_move_processing();
  16 }
  17
  18 bool
  19 Note_head_register::do_try_request(Request *req_l)
  20 {
  21     if (note_req_l_)
  22         return false;
  23
  24     if (req_l->musical() && (req_l->musical()->note() || req_l->musical()->rest()))
  25         note_req_l_=req_l->musical()->rhythmic();
  26     else
  27         return false;
  28
  29     return true;
  30 }
  31
  32 void
  33 Note_head_register::do_process_requests()
  34 {
  35     if (!note_req_l_)
  36         return;
  37
  38     Note_head*n_p = new Note_head(8);   // ugh
  39     note_p_ = n_p;
  40     n_p->set_rhythmic(note_req_l_->rhythmic());
  41
  42     if (note_req_l_->note()) {
  43         n_p->position_i_ = note_req_l_->note()->height() +
  44             *get_staff_info().c0_position_i_l_;
  45     } else if (note_req_l_->rest()) {
  46         n_p->rest_b_ = true;
  47     }
  48
  49     Score_elem_info itinf(note_p_,note_req_l_);
  50     announce_element(itinf);
  51 }
  52
  53 void
  54 Note_head_register::do_pre_move_processing()
  55 {
  56     if (note_p_) {
  57         typeset_element(note_p_);
  58         note_p_ = 0;
  59     }
  60 }
  61 void
  62 Note_head_register::do_post_move_processing()
  63 {
  64     note_req_l_ = 0;
  65 }
  66
  67 IMPLEMENT_STATIC_NAME(Note_head_register);
  68 IMPLEMENT_IS_TYPE_B1(Note_head_register,Request_register);
  69 ADD_THIS_REGISTER(Note_head_register);