lily/staff-regs.cc

   1 /*
   2   staff-regs.cc -- implement Staff_registers
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8 #include "staff-sym.hh"
   9 #include "voice-group-regs.hh"
  10 #include "voice-regs.hh"
  11 #include "staff-regs.hh"
  12 #include "command-request.hh"
  13 #include "bar.hh"
  14 #include "debug.hh"
  15 #include "input-register.hh"
  16
  17 Staff_info
  18 Staff_registers::get_staff_info()
  19 {
  20     Staff_info inf;
  21     inf = Request_register::get_staff_info();
  22     inf.staff_sym_l_=staff_sym_l_;
  23     inf.c0_position_i_l_ = &c0_position_i_;
  24     return inf;
  25 }
  26
  27 Staff_registers::Staff_registers(Input_register const*ireg_C)
  28 {
  29     staff_sym_l_ =0;
  30     c0_position_i_ = 0;
  31     base_position_i_ =0;
  32     add( ireg_C->get_nongroup_p_arr());
  33     ireg_C_ =ireg_C;
  34 }
  35
  36 /** Magic function which takes a Voice_registers out of one of its own
  37   children, and puts it in another. This also handles the push and
  38   popgroup feature.  */
  39 void
  40 Staff_registers::change_group(Group_change_req * greq_l,
  41                                Voice_registers *voice_regs_l,
  42                                Voice_group_registers * old_group)
  43 {
  44
  45     Voice_registers *regs_p = (old_group)
  46         ? (Voice_registers*) old_group->get_register_p(
  47             voice_regs_l)
  48         : new Voice_registers(
  49             greq_l->voice_l(), ireg_C_->get_ireg_l("Voice_group_registers")
  50             ->get_ireg_l("Voice_registers"));
  51
  52     String new_str = greq_l->newgroup_str_;
  53     String old_str;
  54     if (old_group)
  55          old_str = old_group->group_id_str_;
  56     if ( new_str[0] == '+') {
  57         new_str = old_str + new_str;
  58     } else if (new_str[0] == '-') {
  59         int idx = old_str.index_last_i('+');
  60         if (idx >=0)
  61             new_str = old_str.left_str ( idx );
  62     }
  63     Voice_group_registers * new_group_l = get_group(new_str);
  64     new_group_l->add(regs_p);
  65     regs_p->sync_features();
  66     mtor << "processed change_group " << get_staff_info().when()<<"\n";
  67     print();
  68 }
  69
  70 Voice_group_registers *
  71 Staff_registers::get_group(String id)
  72 {
  73     for (int i=0; i < group_l_arr_.size(); i++) {
  74         if (group_l_arr_[i]->group_id_str_ == id)
  75             return group_l_arr_[i];
  76     }
  77     Voice_group_registers *group_p =
  78         new Voice_group_registers(id, ireg_C_->get_ireg_l("Voice_group_registers"));
  79     group_l_arr_.push(group_p);
  80     add(group_p);
  81     return group_p;
  82 }
  83
  84
  85 void
  86 Staff_registers::terminate_register(Request_register * reg)
  87 {
  88     for (int i=0; i < group_l_arr_.size(); i++) {
  89         if (group_l_arr_[i] == reg) {
  90             group_l_arr_.del(i);
  91             Register_group_register::terminate_register(reg);
  92             return;
  93         }
  94     }
  95     assert(false);
  96 }
  97
  98 bool
  99 Staff_registers::try_request(Request * r)
 100 {
 101     bool b = Register_group_register::try_request(r);
 102     if (!b) {
 103         Command_req * cr_l = r->command() ;
 104
 105         if (cr_l && cr_l->groupchange()) {
 106             change_group(cr_l->groupchange(), 0, 0);
 107             b = true;
 108         } else
 109             b= false;
 110     }
 111     return b;
 112 }
 113
 114 IMPLEMENT_STATIC_NAME(Staff_registers);
 115
 116 bool
 117 Staff_registers::acceptable_request_b(Request*r)const
 118 {
 119     return Register_group_register::acceptable_request_b(r) ||
 120         (r->command() && r->command()->groupchange());
 121 }
 122
 123 void
 124 Staff_registers::acknowledge_element(Score_elem_info i)
 125 {
 126     Register_group_register::acknowledge_element(i);
 127     if ( i.elem_l_->name() == Staff_symbol::static_name())
 128         staff_sym_l_ = (Staff_symbol*)i.elem_l_->item();
 129 }