lily/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 "proto.hh"
  10 #include "plist.hh"
  11 #include "musicalrequest.hh"
  12 #include "voice-regs.hh"
  13 #include "voice-group-regs.hh"
  14 #include "register.hh"
  15 #include "text-reg.hh"
  16 #include "stem-beam-reg.hh"
  17 #include "script-reg.hh"
  18 #include "complex-walker.hh"
  19 #include "commandrequest.hh"
  20 #include "debug.hh"
  21
  22 static int temp_id_count;
  23
  24 Voice_group_registers::Voice_group_registers(String id)
  25 {
  26     add(new Text_register);
  27     add(new Stem_beam_register);
  28     add(new Script_register);
  29
  30     if (id=="")                 // UGH
  31         id = __FUNCTION__ + String(temp_id_count++);
  32     group_id_str_ = id;
  33 }
  34
  35 bool
  36 Voice_group_registers::try_request(Request*r_l)
  37 {
  38     for (int i=0; i < voice_regs_l_.size(); i++) {
  39         if (voice_regs_l_[i]->voice_l_ == r_l->voice_l())
  40             goto gotcha;
  41     }
  42     return false;
  43 gotcha:
  44     if (r_l->groupfeature()) {
  45         set_feature(Features::dir(r_l->groupfeature()->stemdir_i_));
  46         return true;
  47     }
  48     return Register_group_register::try_request(r_l);
  49 }
  50
  51
  52 bool
  53 Voice_group_registers::static_acceptable_request_b(Request*r)
  54 {
  55     return (r->stem() || r->beam() || r->text() || r->script() ||
  56             r->groupfeature());
  57 }
  58
  59 void
  60 Voice_group_registers::terminate_register(Request_register*r_l)
  61 {
  62     if (r_l->name() == Voice_registers::static_name()) {
  63         for (int i=0; i <voice_regs_l_.size(); i++) {
  64             if (r_l == voice_regs_l_[i])
  65                 voice_regs_l_.del(i);
  66             Register_group_register::terminate_register(r_l);
  67             return;
  68         }
  69     }
  70     assert(false);
  71 }
  72 void
  73 Voice_group_registers::do_print() const
  74 {
  75 #ifndef NPRINT
  76     mtor << "ID: " << group_id_str_<<"\n";
  77     Register_group_register::do_print();
  78 #endif
  79 }
  80 void
  81 Voice_group_registers::add(Request_register*r_l)
  82 {
  83     Register_group_register::add(r_l);
  84     if (r_l->name() == Voice_registers::static_name())
  85         voice_regs_l_.push( (Voice_registers*)r_l );
  86 }