lily/dynamic-engraver.cc

   1 /*
   2   dynamic-reg.cc -- implement Dynamic_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include "debug.hh"
   9 #include "crescendo.hh"
  10 #include "musical-request.hh"
  11 #include "lookup.hh"
  12 #include "paper-def.hh"
  13 #include "score-column.hh"
  14 #include "staff-symbol.hh"
  15 #include "note-column.hh"
  16 #include "text-item.hh"
  17 #include "staff-side.hh"
  18 #include "engraver.hh"
  19 #include "stem.hh"
  20 #include "note-head.hh"
  21
  22 /**
  23    print text & hairpin dynamics.
  24  */
  25 class Dynamic_engraver : public Engraver
  26 {
  27   Text_item * text_p_;
  28   Staff_side_item * staff_side_p_;
  29   Staff_side_spanner * ss_span_p_;
  30   Staff_side_spanner * to_end_ss_span_p_;
  31
  32
  33   Crescendo * to_end_cresc_p_;
  34   Crescendo * cresc_p_;
  35   Span_req * cresc_req_l_;
  36   Array<Request*> dynamic_req_l_arr_;
  37   void  typeset_all ();
  38 public:
  39   VIRTUAL_COPY_CONS(Translator);
  40   Dynamic_engraver();
  41
  42 protected:
  43   virtual void do_removal_processing ();
  44   virtual void acknowledge_element (Score_element_info);
  45   virtual bool do_try_music (Music *req_l);
  46   virtual void do_process_requests();
  47   virtual void do_pre_move_processing();
  48   virtual void do_post_move_processing();
  49 };
  50
  51
  52
  53 Dynamic_engraver::Dynamic_engraver()
  54 {
  55   do_post_move_processing();
  56   text_p_ =0;
  57   staff_side_p_ =0;
  58   to_end_cresc_p_ = cresc_p_ = 0;
  59   ss_span_p_ = to_end_ss_span_p_=0;
  60   cresc_req_l_ = 0;
  61 }
  62
  63 void
  64 Dynamic_engraver::do_post_move_processing()
  65 {
  66   dynamic_req_l_arr_.clear();
  67 }
  68
  69 bool
  70 Dynamic_engraver::do_try_music (Music * m)
  71 {
  72   Request * r = dynamic_cast<Request*> (m);
  73
  74   if(Text_script_req * d = dynamic_cast <Text_script_req *> (r))
  75     {
  76       if (d->style_str_ != "dynamic")
  77         return false;
  78     }
  79   else if (Span_req * s =  dynamic_cast <Span_req*> (r))
  80     {
  81       if (s-> span_type_str_ != "crescendo"
  82           && s->span_type_str_ != "decrescendo")
  83         return false;
  84     }
  85   else
  86     return false;
  87
  88   for (int i=0; i < dynamic_req_l_arr_.size (); i++)
  89     if (r->equal_b (dynamic_req_l_arr_[i]))
  90       return true;
  91
  92   dynamic_req_l_arr_.push (r);
  93   return true;
  94 }
  95
  96
  97 void
  98 Dynamic_engraver::do_process_requests()
  99 {
 100   Crescendo*  new_cresc_p=0;
 101   Staff_side_spanner * new_sss_p =0;
 102   for (int i=0; i < dynamic_req_l_arr_.size(); i++)
 103     {
 104       if (Text_script_req *absd =
 105           dynamic_cast<Text_script_req *> ( dynamic_req_l_arr_[i]))
 106         {
 107           if (text_p_)
 108             {
 109               dynamic_req_l_arr_[i]->warning (_("Got a dynamic already.  Continuing dazed and confused."));
 110               continue;
 111             }
 112
 113           String loud = absd->text_str_;
 114
 115           text_p_ = new Text_item;
 116           text_p_->text_str_ =  loud; // ugh
 117           Scalar prop = get_property ("dynamicStyle", 0);
 118
 119           text_p_->style_str_ = prop.length_i () ? prop :  "dynamic";
 120
 121           staff_side_p_ = new Staff_side_item;
 122           staff_side_p_->set_elt_property (script_priority_scm_sym,
 123                                            gh_int2scm (100));
 124
 125           staff_side_p_->set_victim (text_p_);
 126           staff_side_p_->axis_ = Y_AXIS;
 127           staff_side_p_->dir_ = DOWN;
 128
 129
 130           prop = get_property ("verticalDirection", 0);
 131           if (prop.isdir_b())
 132             {
 133               staff_side_p_->dir_ = Direction (int (prop));
 134             }
 135
 136           prop = get_property ("dynamicDirection", 0);
 137           if (prop.isnum_b ())
 138             {
 139               staff_side_p_->dir_ = (Direction) (int) prop;
 140             }
 141           if (absd->dir_)
 142             {
 143               staff_side_p_->dir_ = absd->dir_;
 144             }
 145
 146           prop = get_property ("dynamicPadding", 0);
 147           if (prop.isnum_b ())
 148             {
 149               staff_side_p_->set_elt_property (padding_scm_sym,
 150                                                gh_double2scm(Real(prop)));
 151             }
 152           announce_element (Score_element_info (text_p_, absd));
 153           announce_element (Score_element_info (staff_side_p_, absd));
 154         }
 155       else if (Span_req *span_l
 156                = dynamic_cast <Span_req *> (dynamic_req_l_arr_[i]))
 157         {
 158           if (span_l->span_dir_ == STOP)
 159             {
 160               if (!cresc_p_)
 161                 {
 162                   span_l->warning (_ ("Can't find (de)crescendo to end"));
 163                 }
 164               else
 165                 {
 166                   assert (!to_end_cresc_p_);
 167                   to_end_cresc_p_ =cresc_p_;
 168                   to_end_ss_span_p_ = ss_span_p_ ;
 169
 170                   cresc_p_ = 0;
 171                   ss_span_p_ =0;
 172
 173
 174
 175
 176                   Scalar prop = get_property ("verticalDirection", 0);
 177                   if (prop.isdir_b())
 178                     {
 179                       to_end_ss_span_p_->dir_ = Direction (int (prop));
 180                     }
 181                   prop = get_property ("dynamicDirection", 0);
 182                   if (prop.isdir_b ())
 183                     {
 184                       to_end_ss_span_p_->dir_ = (Direction) (int) prop;
 185                     }
 186                   prop = get_property ("dynamicPadding", 0);
 187                   if (prop.isnum_b ())
 188                     {
 189                       to_end_ss_span_p_->set_elt_property (padding_scm_sym,
 190                                                            gh_double2scm(Real(prop)));
 191                     }
 192                 }
 193             }
 194           else if (span_l->span_dir_ == START)
 195             {
 196               cresc_req_l_ = span_l;
 197               assert (!new_cresc_p);
 198               new_cresc_p  = new Crescendo;
 199               new_cresc_p->grow_dir_ = (span_l->span_type_str_ == "crescendo")  ? BIGGER : SMALLER;
 200               announce_element (Score_element_info (new_cresc_p, span_l));
 201
 202               new_sss_p = new Staff_side_spanner;
 203               new_sss_p->set_victim (new_cresc_p);
 204               new_sss_p->axis_ = Y_AXIS;
 205               // UGH.!
 206               // new_sss_p->set_elt_property (dangling_scm_sym, SCM_BOOL_T);
 207               announce_element (Score_element_info (new_sss_p, span_l));
 208             }
 209         }
 210     }
 211
 212   if (new_cresc_p)
 213     {
 214       if (cresc_p_)
 215         {
 216           ::warning (_ ("Too many crescendi here"));
 217           typeset_element (cresc_p_);
 218           typeset_element (ss_span_p_);
 219           cresc_p_ = 0;
 220           ss_span_p_ =0;
 221         }
 222
 223       cresc_p_ = new_cresc_p;
 224       ss_span_p_ = new_sss_p;
 225       cresc_p_->set_bounds(LEFT,get_staff_info().musical_pcol_l ());
 226       ss_span_p_->set_bounds (LEFT,get_staff_info().musical_pcol_l ());
 227       if (text_p_)
 228         {
 229           cresc_p_->dyn_b_drul_[LEFT] = true;
 230           if (to_end_cresc_p_)
 231             to_end_cresc_p_->dyn_b_drul_[RIGHT] = true;
 232         }
 233     }
 234 }
 235
 236 void
 237 Dynamic_engraver::do_pre_move_processing()
 238 {
 239   typeset_all ();
 240 }
 241
 242
 243
 244 ADD_THIS_TRANSLATOR(Dynamic_engraver);
 245
 246 void
 247 Dynamic_engraver::do_removal_processing ()
 248 {
 249   if (cresc_p_)
 250     {
 251       typeset_element (cresc_p_ );
 252       typeset_element (ss_span_p_);
 253       ss_span_p_ =0;
 254       cresc_req_l_->warning (_ ("unended crescendo"));
 255       cresc_p_ =0;
 256     }
 257   typeset_all ();
 258 }
 259
 260
 261 void
 262 Dynamic_engraver::typeset_all ()
 263 {
 264   if (to_end_cresc_p_)
 265     {
 266       to_end_cresc_p_->set_bounds(RIGHT,get_staff_info().musical_pcol_l ());
 267       to_end_ss_span_p_->set_bounds(RIGHT,get_staff_info().musical_pcol_l ());
 268       typeset_element (to_end_cresc_p_);
 269       typeset_element (to_end_ss_span_p_);
 270       to_end_cresc_p_ =0;
 271       to_end_ss_span_p_ =0;
 272     }
 273
 274   if (text_p_)
 275     {
 276       typeset_element (text_p_);
 277       typeset_element (staff_side_p_);
 278       text_p_ =0;
 279       staff_side_p_ =0;
 280     }
 281 }
 282
 283
 284 void
 285 Dynamic_engraver::acknowledge_element (Score_element_info i)
 286 {
 287   if (dynamic_cast<Stem *> (i.elem_l_)
 288       || dynamic_cast<Note_head *> (i.elem_l_)
 289       )
 290     {
 291       if (staff_side_p_)
 292         staff_side_p_->add_support (i.elem_l_);
 293
 294       if (to_end_ss_span_p_)
 295         to_end_ss_span_p_->add_support (i.elem_l_);
 296
 297       if (ss_span_p_)
 298         ss_span_p_->add_support (i.elem_l_);
 299     }
 300 }