src/voice-group-regs.cc

   1 /*
   2   voicegroup.cc -- implement Voice_group_registers
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "plist.hh"
  10 #include "musicalrequest.hh"
  11 #include "voice-regs.hh"
  12 #include "voice-group-regs.hh"
  13 #include "register.hh"
  14 #include "text-reg.hh"
  15 #include "stem-beam-reg.hh"
  16 #include "script-reg.hh"
  17 #include "complex-walker.hh"
  18 #include "commandrequest.hh"
  19 #include "debug.hh"
  20
  21 static int temp_id_count;
  22
  23 Voice_group_registers::Voice_group_registers(String id)
  24 {
  25     add(new Text_register);
  26     add(new Stem_beam_register);
  27     add(new Script_register);
  28
  29     if (id=="")                 // UGH
  30         id = __FUNCTION__ + String(temp_id_count++);
  31     group_id_str_ = id;
  32 }
  33
  34 bool
  35 Voice_group_registers::try_request(Request*r_l)
  36 {
  37     for (int i=0; i < voice_regs_l_.size(); i++) {
  38         if (voice_regs_l_[i]->voice_l_ == r_l->voice_l())
  39             goto gotcha;
  40     }
  41     return false;
  42 gotcha:
  43     if (r_l->groupfeature()) {
  44         set_feature(Features::dir(r_l->groupfeature()->stemdir_i_));
  45         return true;
  46     }
  47     return Register_group_register::try_request(r_l);
  48 }
  49
  50
  51 bool
  52 Voice_group_registers::static_acceptable_request_b(Request*r)
  53 {
  54     return (r->stem() || r->beam() || r->text() || r->script() ||
  55             r->groupfeature());
  56 }
  57
  58 void
  59 Voice_group_registers::terminate_register(Request_register*r_l)
  60 {
  61     if (r_l->name() == Voice_registers::static_name()) {
  62         for (int i=0; i <voice_regs_l_.size(); i++) {
  63             if (r_l == voice_regs_l_[i])
  64                 voice_regs_l_.del(i);
  65             Register_group_register::terminate_register(r_l);
  66             return;
  67         }
  68     }
  69     assert(false);
  70 }
  71 void
  72 Voice_group_registers::do_print() const
  73 {
  74 #ifndef NPRINT
  75     mtor << "ID: " << group_id_str_<<"\n";
  76     Register_group_register::do_print();
  77 #endif
  78 }
  79 void
  80 Voice_group_registers::add(Request_register*r_l)
  81 {
  82     Register_group_register::add(r_l);
  83     if (r_l->name() == Voice_registers::static_name())
  84         voice_regs_l_.push( (Voice_registers*)r_l );
  85 }