lily/key-grav.cc

   1 /*
   2   key-reg.cc -- implement Key_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1998 Han-Wen Nienhuys <hanwen@stack.nl>
   7
   8
   9   Todo: key undo, special keys.
  10
  11   */
  12 #include "key-grav.hh"
  13 #include "key-item.hh"
  14 #include "command-request.hh"
  15 #include "local-key-grav.hh"
  16 #include "musical-request.hh"
  17 #include "local-key-item.hh"
  18 #include "bar.hh"
  19 #include "time-description.hh"
  20
  21 Key_engraver::Key_engraver()
  22 {
  23   kit_p_ = 0;
  24   do_post_move_processing();
  25 }
  26
  27 void
  28 Key_engraver::create_key()
  29 {
  30   if (!kit_p_)
  31     {
  32       int c0_i=0;
  33
  34       Staff_info inf = get_staff_info();
  35       if (inf.c0_position_i_l_)
  36         c0_i = *get_staff_info().c0_position_i_l_;
  37
  38       kit_p_ = new Key_item (c0_i);
  39       kit_p_->break_priority_i_ = -1; // ugh
  40       announce_element (Score_elem_info (kit_p_,keyreq_l_));
  41       kit_p_->read (*this);
  42     }
  43 }
  44
  45 bool
  46 Key_engraver::do_try_request (Request * req_l)
  47 {
  48   Command_req* creq_l= req_l->command();
  49   if (!creq_l|| !creq_l->keychange())
  50     return false;
  51
  52   if (keyreq_l_)
  53     return false;               // TODO
  54   keyreq_l_ = creq_l->keychange();
  55   read_req (keyreq_l_);
  56   return true;
  57 }
  58
  59 void
  60 Key_engraver::acknowledge_element (Score_elem_info info)
  61 {
  62   Command_req * r_l = info.req_l_->command() ;
  63   if (r_l && r_l->clefchange())
  64     {
  65       create_key();
  66     }
  67   else if (info.elem_l_->is_type_b (Bar::static_name ()))
  68     {
  69       if (!keyreq_l_)
  70         default_key_b_ = true;
  71       create_key();
  72     }
  73
  74 }
  75
  76 void
  77 Key_engraver::do_process_requests()
  78 {
  79   if (key_.multi_octave_b_)
  80     {
  81       assert (false); // TODO .
  82     }
  83   else if (keyreq_l_)
  84     {
  85       create_key();
  86     }
  87 }
  88
  89 void
  90 Key_engraver::do_pre_move_processing()
  91 {
  92   if (kit_p_)
  93     {
  94       kit_p_->default_b_ = default_key_b_;
  95       typeset_element (kit_p_);
  96       kit_p_ = 0;
  97     }
  98 }
  99
 100
 101
 102 void
 103 Key_engraver::read_req (Key_change_req const * r)
 104 {
 105   key_.clear ();
 106   key_.multi_octave_b_ = r->multi_octave_b_;
 107   accidental_idx_arr_.clear();
 108
 109   for (int i = 0; i < r->pitch_arr_.size(); i ++)
 110     {
 111       Musical_pitch m_l =r->pitch_arr_[i];
 112       if (r->multi_octave_b_)
 113         key_.set (m_l);
 114       else
 115         key_.set (m_l.notename_i_, m_l.accidental_i_);
 116
 117       accidental_idx_arr_.push (m_l.notename_i_);
 118     }
 119 }
 120
 121 void
 122 Key_engraver::do_post_move_processing()
 123 {
 124   keyreq_l_ = 0;
 125   default_key_b_ = false;
 126 }
 127
 128
 129 IMPLEMENT_IS_TYPE_B1(Key_engraver,Engraver);
 130 ADD_THIS_TRANSLATOR(Key_engraver);