src/keyreg.cc

   1 /*
   2   keyreg.cc -- implement Key_register
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7
   8   todo: key undo
   9
  10   */
  11
  12 #include "keyreg.hh"
  13 #include "keyitem.hh"
  14 #include "complexwalker.hh"
  15 #include "commandrequest.hh"
  16 #include "staffcolumn.hh"
  17 #include "localkeyreg.hh"
  18 #include "musicalrequest.hh"
  19
  20 Key_register::Key_register(Complex_walker*w)
  21     : Request_register(w)
  22 {
  23     do_post_move_process();
  24 }
  25
  26
  27 bool
  28 Key_register::try_request(Request * req_l)
  29 {
  30     if (!req_l->command()->keychange())
  31         return false;
  32     assert(!keyreq_l_);         // todo
  33     keyreq_l_ = req_l->command()->keychange();
  34     read_req(keyreq_l_);
  35     return true;
  36 }
  37
  38 void
  39 Key_register::acknowledge_element(Staff_elem_info info)
  40 {
  41     Command_req * r_l = info.req_l_->command() ;
  42     if (r_l && r_l->clefchange() && !kit_p_) {
  43          kit_p_ = new Key_item(walk_l_->c0_position_i());
  44          kit_p_->read(*this);
  45          announce_element(Staff_elem_info(kit_p_, keyreq_l_, this));
  46     }
  47 }
  48
  49 void
  50 Key_register::process_request()
  51 {
  52     Time_description *time_l = &walk_l_->time_;
  53
  54     if (!keyreq_l_ &&
  55         (!time_l->whole_in_measure_|| !time_l->when_)) {
  56         default_key_b_ = true;
  57     }
  58
  59      if ( default_key_b_ || keyreq_l_) {
  60          kit_p_ = new Key_item(walk_l_->c0_position_i());
  61          kit_p_->read(*this);
  62          announce_element(Staff_elem_info(kit_p_, keyreq_l_, this));
  63      }
  64 }
  65
  66 void
  67 Key_register::do_pre_move_process()
  68 {
  69     if (kit_p_) {
  70         if (default_key_b_)
  71             typeset_breakable_item(0,0,kit_p_);
  72         else
  73             typeset_breakable_item(
  74                 new Key_item(*kit_p_), kit_p_, new Key_item(*kit_p_));
  75         kit_p_ = 0;
  76     }
  77 }
  78
  79
  80
  81 void
  82 Key_register::read_req(Key_change_req * r)
  83 {
  84     accidental_idx_arr_.set_size(0);
  85     for (int i = 0; i < r->melodic_p_arr_.size(); i ++) {
  86         int n_i=r->melodic_p_arr_[i]->notename_i_;
  87         key_.set(n_i, r->melodic_p_arr_[i]->accidental_i_);
  88         accidental_idx_arr_.push(n_i);
  89     }
  90 }
  91
  92 void
  93 Key_register::do_post_move_process()
  94 {
  95     keyreq_l_ = 0;
  96     default_key_b_ = false;
  97     kit_p_ = 0;
  98 }