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   do_post_move_processing();
  22   dir_ = CENTER;
  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_.clear();
  32 }
  33
  34 bool
  35 Dynamic_engraver::do_try_request (Request * r)
  36 {
  37   Musical_req * m = r->musical();
  38   if (!m)
  39     return false;
  40   Dynamic_req * d = m->dynamic ();
  41   if (!d)
  42     return false;
  43
  44   if (cresc_p_ && d->span_dynamic ()
  45       && d->span_dynamic ()->spantype == Span_req::START)
  46     return false;
  47   if (d->absdynamic ())
  48     {
  49       for (int i=0; i < dynamic_req_l_arr_.size (); i++)
  50         if (d->equal_b (dynamic_req_l_arr_[i]))
  51           return true;
  52     }
  53
  54   dynamic_req_l_arr_.push (m->dynamic());
  55   return true;
  56 }
  57 void
  58 Dynamic_engraver::do_process_requests()
  59 {
  60   Crescendo*  new_cresc_p=0;
  61   for (int i=0; i < dynamic_req_l_arr_.size(); i++)
  62     {
  63       Dynamic_req *dreq_l = dynamic_req_l_arr_[i];
  64       if (dreq_l->absdynamic())
  65         {
  66           Text_def * td_p = new Text_def;
  67           td_p->align_i_ = CENTER;
  68           String loud = dreq_l->absdynamic()->loudness_str ();
  69           td_p->text_str_ = paper()->lookup_l ()->dynamic (loud).tex_;
  70           td_p->style_str_ = "dynamic";
  71
  72           assert (!dynamic_p_) ; // TODO
  73
  74           dynamic_p_ = new Text_item (td_p);
  75           announce_element (Score_elem_info (dynamic_p_, dreq_l));
  76         }
  77       else if (dreq_l->span_dynamic())
  78         {
  79
  80           Span_dynamic_req* span_l = dreq_l->span_dynamic();
  81           if (span_l->spantype == Span_req::STOP)
  82             {
  83               if (!cresc_p_)
  84                 {
  85                   span_l->warning (_("Can't find cresc to end "));
  86                 }
  87               else
  88                 {
  89                   assert (!to_end_cresc_p_);
  90                   to_end_cresc_p_ =cresc_p_;
  91                   cresc_p_ = 0;
  92                 }
  93             }
  94           else if (span_l->spantype == Span_req::START)
  95             {
  96               cresc_req_l_ = span_l;
  97               assert (!new_cresc_p);
  98               new_cresc_p  = new Crescendo;
  99               new_cresc_p->grow_dir_ = span_l->dynamic_dir_;
 100               announce_element (Score_elem_info (new_cresc_p, span_l));
 101             }
 102         }
 103     }
 104
 105   if (new_cresc_p)
 106     {
 107       cresc_p_ = new_cresc_p;
 108       cresc_p_->set_bounds(LEFT,get_staff_info().musical_l ());
 109       if (dynamic_p_)
 110         {
 111           cresc_p_->dyn_b_drul_[LEFT] = true;
 112         }
 113     }
 114 }
 115
 116 void
 117 Dynamic_engraver::do_pre_move_processing()
 118 {
 119   Staff_symbol* s_l = get_staff_info().staff_sym_l_;
 120   if (to_end_cresc_p_)
 121     {
 122       if (dynamic_p_)
 123         to_end_cresc_p_->dyn_b_drul_[RIGHT]=true;
 124
 125       to_end_cresc_p_->set_bounds(RIGHT,get_staff_info().musical_l ());
 126       to_end_cresc_p_->add_support (s_l);
 127       typeset_element (to_end_cresc_p_);
 128       to_end_cresc_p_ = 0;
 129     }
 130   if (dynamic_p_)
 131     {
 132
 133       dynamic_p_->add_support (s_l);
 134       typeset_element (dynamic_p_);
 135       dynamic_p_ = 0;
 136     }
 137 }
 138
 139
 140 IMPLEMENT_IS_TYPE_B1(Dynamic_engraver,Engraver);
 141 ADD_THIS_TRANSLATOR(Dynamic_engraver);
 142
 143 void
 144 Dynamic_engraver::do_removal_processing ()
 145 {
 146   if (cresc_p_)
 147     {
 148       typeset_element (cresc_p_ );
 149
 150       cresc_req_l_->warning (_("unended crescendo"));
 151       cresc_p_ =0;
 152     }
 153   if (to_end_cresc_p_)
 154     {
 155       typeset_element (to_end_cresc_p_);
 156       to_end_cresc_p_ =0;
 157     }
 158   if (dynamic_p_)
 159     {
 160       typeset_element (dynamic_p_);
 161       dynamic_p_ =0;
 162     }
 163 }
 164
 165 void
 166 Dynamic_engraver::acknowledge_element (Score_elem_info i)
 167 {
 168   if (i.elem_l_->is_type_b (Note_column::static_name ()))
 169     {
 170       if (dynamic_p_)
 171         dynamic_p_->add_support (i.elem_l_);
 172
 173       if (to_end_cresc_p_)
 174         to_end_cresc_p_->add_support (i.elem_l_);
 175
 176       if (cresc_p_)
 177         cresc_p_->add_support (i.elem_l_);
 178     }
 179 }