lily/walk-regs.cc

   1 /*
   2   walkregs.cc -- implement Walker_registers
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8 #include "debug.hh"
   9 #include "walk-regs.hh"
  10 #include "staff-regs.hh"
  11 #include "staff-elem.hh"
  12 #include "staff.hh"
  13 #include "complex-walker.hh"
  14 #include "staff-column.hh"
  15 #include "score-walker.hh"
  16 #include "bar.hh"               // needed for Bar::static_name
  17 #include "input-register.hh"
  18
  19 Walker_registers::Walker_registers(Complex_walker *w)
  20 {
  21     walk_l_ = w;
  22     Input_register * ireg_l = w->staff_l_->ireg_p_;
  23     if (ireg_l->name_str_ == "Staff_registers")
  24         add(new Staff_registers(ireg_l));
  25     else {
  26         add(ireg_l->get_nongroup_p_arr());
  27     }
  28 }
  29
  30 void
  31 Walker_registers::announce_element(Staff_elem_info info)
  32 {
  33     if (info.elem_p_->name() == Bar::static_name()) {
  34         walk_l_->allow_break();
  35     }
  36     announce_info_arr_.push(info);
  37 }
  38
  39 void
  40 Walker_registers::acknowledge_element(Staff_elem_info )
  41 {
  42     assert(false);
  43 }
  44
  45 void
  46 Walker_registers::do_announces()
  47 {
  48     Request dummy_req;
  49     for (int i = 0; i < announce_info_arr_.size(); i++){
  50         Staff_elem_info info = announce_info_arr_[i];
  51
  52         if (!info.req_l_)
  53             info.req_l_ = &dummy_req;
  54         Register_group_register::acknowledge_element(info);
  55     }
  56     announce_info_arr_.set_size(0);
  57 }
  58
  59 void
  60 Walker_registers::typeset_element(Staff_elem *elem_p)
  61 {
  62     typeset_musical_item(elem_p);
  63 }
  64
  65 void
  66 Walker_registers::typeset_musical_item(Staff_elem * elem_p)
  67 {
  68     walk_l_->typeset_element(elem_p);
  69 }
  70
  71 void
  72 Walker_registers::typeset_breakable_item(Item * pre_p , Item * nobreak_p,
  73                                        Item * post_p)
  74 {
  75     if (pre_p)
  76         prebreak_item_p_arr_.push(pre_p);
  77     if (nobreak_p)
  78         nobreak_item_p_arr_.push(nobreak_p);
  79     if (post_p)
  80         postbreak_item_p_arr_.push(post_p);
  81 }
  82
  83 void
  84 Walker_registers::pre_move_processing()
  85 {
  86     // this generates all items.
  87     Register_group_register::pre_move_processing();
  88     walk_l_->ptr()->typeset_breakable_items(prebreak_item_p_arr_,
  89                                             nobreak_item_p_arr_,
  90                                             postbreak_item_p_arr_);
  91 }
  92 void
  93 Walker_registers::post_move_processing()
  94 {
  95     Register_group_register::post_move_processing();
  96 }
  97
  98
  99 Staff_info
 100 Walker_registers::get_staff_info() return inf;
 101 {
 102     if (walk_l_->score_walk_l_) // we get called ctors
 103         inf.break_allowed_b_ = walk_l_->score_walk_l_->break_allowed_b();
 104     inf.walk_l_ = walk_l_;
 105     inf.time_C_ = &walk_l_->time_;
 106     inf.rhythmic_C_ = walk_l_->default_grouping;
 107 }
 108
 109 Paper_def*
 110 Walker_registers::paper()const
 111 {
 112     return walk_l_->staff_l_->paper();
 113 }