lily/dynamic-grav.cc

   1 /*
   2   dynamic-reg.cc -- implement Dynamic_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8 #include "debug.hh"
   9 #include "crescendo.hh"
  10 #include "dynamic-grav.hh"
  11 #include "musical-request.hh"
  12 #include "text-item.hh"
  13 #include "lookup.hh"
  14 #include "paper-def.hh"
  15 #include "score-column.hh"
  16 #include "staff-sym.hh"
  17 #include "note-column.hh"
  18
  19 Dynamic_engraver::Dynamic_engraver()
  20 {
  21     dir_i_ =0;
  22     do_post_move_processing();
  23     dynamic_p_ =0;
  24     to_end_cresc_p_ = cresc_p_ = 0;
  25     cresc_req_l_ = 0;
  26 }
  27
  28 void
  29 Dynamic_engraver::do_post_move_processing()
  30 {
  31     dynamic_req_l_arr_.set_size(0);
  32 }
  33
  34 bool
  35 Dynamic_engraver::do_try_request(Request * r)
  36 {
  37     Musical_req * m = r->musical();
  38     if (!m || !m->dynamic())
  39         return false;
  40     dynamic_req_l_arr_.push(m->dynamic());
  41     return true;
  42 }
  43 void
  44 Dynamic_engraver::do_process_requests()
  45 {
  46     Crescendo*  new_cresc_p=0;
  47     for (int i=0; i < dynamic_req_l_arr_.size(); i++) {
  48         Dynamic_req *dreq_l = dynamic_req_l_arr_[i];
  49         if (dreq_l->absdynamic()) {
  50             Text_def * td_p = new Text_def;
  51             td_p->align_i_ = 0;
  52             String loud =Dynamic_req::loudness_str(
  53                 dreq_l->absdynamic()->loudness_);
  54
  55             td_p->text_str_ = paper()->lookup_l()->dynamic(loud).tex;
  56             td_p->style_str_ = "dynamic";
  57
  58             assert (!dynamic_p_) ; // TODO
  59
  60             dynamic_p_ = new Text_item(td_p);
  61             announce_element(Score_elem_info(dynamic_p_, dreq_l));
  62         } else if (dreq_l->span_dynamic()) {
  63
  64             Span_dynamic_req* span_l = dreq_l->span_dynamic();
  65             if (span_l->spantype == Span_req::STOP) {
  66                 if (!cresc_p_) {
  67                     span_l->warning("Can't find cresc to end " );
  68                 } else {
  69                     assert(!to_end_cresc_p_);
  70                     to_end_cresc_p_ =cresc_p_;
  71                     cresc_p_ = 0;
  72                 }
  73             } else if (span_l->spantype == Span_req::START) {
  74                 cresc_req_l_ = span_l;
  75                 assert(!new_cresc_p);
  76                 new_cresc_p  = new Crescendo;
  77                 new_cresc_p->grow_dir_i_ = span_l->dynamic_dir_i_;
  78                 announce_element(Score_elem_info(new_cresc_p, span_l));
  79             }
  80         }
  81     }
  82
  83     if ( new_cresc_p ) {
  84         cresc_p_ = new_cresc_p;
  85         cresc_p_->left_col_l_ = get_staff_info().musical_l()->pcol_l_;
  86         if (dynamic_p_) {
  87             cresc_p_->left_dyn_b_ = true;
  88         }
  89     }
  90 }
  91
  92 void
  93 Dynamic_engraver::do_pre_move_processing()
  94 {
  95     Staff_symbol* s_l = get_staff_info().staff_sym_l_;
  96     if (dynamic_p_) {
  97         dynamic_p_->set_staffsym(s_l);
  98         typeset_element(dynamic_p_);
  99         dynamic_p_ = 0;
 100     }
 101     if ( to_end_cresc_p_) {
 102         if (dynamic_p_)
 103             to_end_cresc_p_->right_dyn_b_=true;
 104
 105         to_end_cresc_p_->right_col_l_ = get_staff_info().musical_l()->pcol_l_;
 106         to_end_cresc_p_->set_staffsym(s_l);
 107         typeset_element(to_end_cresc_p_);
 108         to_end_cresc_p_ = 0;
 109     }
 110 }
 111
 112 void
 113 Dynamic_engraver::set_feature(Feature i)
 114 {
 115     if (i.type_ == "vdir")
 116         dir_i_ = i.value_;
 117 }
 118
 119 IMPLEMENT_STATIC_NAME(Dynamic_engraver);
 120 IMPLEMENT_IS_TYPE_B1(Dynamic_engraver,Request_engraver);
 121 ADD_THIS_ENGRAVER(Dynamic_engraver);
 122
 123 Dynamic_engraver::~Dynamic_engraver()
 124 {
 125     delete dynamic_p_;
 126     delete to_end_cresc_p_;
 127     if (cresc_p_) {
 128         cresc_req_l_->warning("unended crescendo");
 129     }
 130     delete cresc_p_;
 131 }
 132 void
 133 Dynamic_engraver::acknowledge_element(Score_elem_info i)
 134 {
 135     if (i.elem_l_->name() == Note_column::static_name()) {
 136         if (dynamic_p_) dynamic_p_->add_support(i.elem_l_);
 137         if (to_end_cresc_p_)
 138             to_end_cresc_p_->add_support(i.elem_l_);
 139         if (cresc_p_)
 140             cresc_p_->add_support(i.elem_l_);
 141     }
 142 }