src/bar-reg.cc

   1 /*
   2   bar-reg.cc -- implement Bar_register
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "bar-reg.hh"
  10 #include "bar.hh"
  11 #include "commandrequest.hh"
  12 #include "score-column.hh"
  13 #include "time-description.hh"
  14
  15 Bar_register::Bar_register()
  16 {
  17     post_move_processing();
  18 }
  19
  20 bool
  21 Bar_register::try_request(Request*r_l)
  22 {
  23     Command_req* c_l = r_l->command();
  24     if (!c_l|| !c_l->bar())
  25         return false;
  26
  27     assert(!bar_req_l_);
  28     bar_req_l_ = c_l->bar();
  29
  30     return true;
  31 }
  32
  33 void
  34 Bar_register::process_requests()
  35 {
  36     if (bar_req_l_ ) {
  37         bar_p_ = new Bar(bar_req_l_->type_str_);
  38     } else if (!get_staff_info().time_c_l_->whole_in_measure_) {
  39         bar_p_ = new Bar("|");
  40     }
  41
  42     if (bar_p_){
  43         announce_element(Staff_elem_info(bar_p_, bar_req_l_) );
  44     }
  45 }
  46
  47 void
  48 Bar_register::split_bar(Bar *& pre, Bar * no, Bar * &post)
  49 {
  50     String s= no->type;
  51     if (s == ":|:") {
  52         pre = new Bar(":|");
  53         post = new Bar("|:");
  54     }else if (s=="|:") {
  55         post = new Bar(s);
  56     } else {
  57         pre = new Bar(*no);
  58     }
  59 }
  60
  61 void
  62 Bar_register::pre_move_processing()
  63 {
  64       if (bar_p_) {
  65           Bar * post_p =0;
  66           Bar * pre_p =0;
  67           split_bar(pre_p, bar_p_, post_p);
  68
  69           typeset_breakable_item(pre_p, bar_p_, post_p);
  70           bar_p_ =0;
  71       }
  72 }
  73
  74 void
  75 Bar_register::post_move_processing()
  76 {
  77     bar_req_l_ = 0;
  78     bar_p_ =0;
  79 }