src/key-reg.cc

   1 /*
   2   key-reg.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 #include "time-description.hh"
  12 #include "key-reg.hh"
  13 #include "key-item.hh"
  14 #include "commandrequest.hh"
  15 #include "staff-column.hh"
  16 #include "local-key-reg.hh"
  17 #include "musicalrequest.hh"
  18
  19 Key_register::Key_register()
  20 {
  21     post_move_processing();
  22 }
  23
  24 bool
  25 Key_register::try_request(Request * req_l)
  26 {
  27     Command_req* creq_l= req_l->command();
  28      if (!creq_l|| !creq_l->keychange())
  29         return false;
  30
  31     assert(!keyreq_l_);         // todo
  32     keyreq_l_ = creq_l->keychange();
  33     read_req(keyreq_l_);
  34     return true;
  35 }
  36
  37 void
  38 Key_register::acknowledge_element(Staff_elem_info info)
  39 {
  40     Command_req * r_l = info.req_l_->command() ;
  41     if (r_l && r_l->clefchange() && !kit_p_) {
  42         int c0_i= *get_staff_info().c0_position_i_;
  43          kit_p_ = new Key_item(c0_i);
  44          kit_p_->read(*this);
  45          announce_element(Staff_elem_info(kit_p_, keyreq_l_));
  46     }
  47 }
  48
  49 void
  50 Key_register::process_requests()
  51 {
  52     const Time_description *time_l = get_staff_info().time_c_l_;
  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          int c0_i= *get_staff_info().c0_position_i_;
  61          kit_p_ = new Key_item(c0_i);
  62          kit_p_->read(*this);
  63          announce_element(Staff_elem_info(kit_p_, keyreq_l_));
  64      }
  65 }
  66
  67 void
  68 Key_register::pre_move_processing()
  69 {
  70     if (kit_p_) {
  71         if (default_key_b_)
  72             typeset_breakable_item(0,0,kit_p_);
  73         else
  74             typeset_breakable_item(
  75                 new Key_item(*kit_p_), kit_p_, new Key_item(*kit_p_));
  76         kit_p_ = 0;
  77     }
  78 }
  79
  80
  81
  82 void
  83 Key_register::read_req(Key_change_req * r)
  84 {
  85     accidental_idx_arr_.set_size(0);
  86     for (int i = 0; i < r->melodic_p_arr_.size(); i ++) {
  87         int n_i=r->melodic_p_arr_[i]->notename_i_;
  88         key_.set(n_i, r->melodic_p_arr_[i]->accidental_i_);
  89         accidental_idx_arr_.push(n_i);
  90     }
  91 }
  92
  93 void
  94 Key_register::post_move_processing()
  95 {
  96     keyreq_l_ = 0;
  97     default_key_b_ = false;
  98     kit_p_ = 0;
  99 }