2 dynamic-engraver.cc -- implement Dynamic_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "dimensions.hh"
10 #include "crescendo.hh"
11 #include "musical-request.hh"
13 #include "paper-def.hh"
14 #include "paper-column.hh"
15 #include "staff-symbol.hh"
16 #include "note-column.hh"
17 #include "text-item.hh"
18 #include "side-position-interface.hh"
19 #include "engraver.hh"
21 #include "note-head.hh"
22 #include "group-interface.hh"
23 #include "directional-element-interface.hh"
24 #include "staff-symbol-referencer.hh"
30 class Dynamic_line_spanner : public Spanner
33 Dynamic_line_spanner ();
35 void add_element (Score_element*);
36 void add_column (Note_column*);
37 Direction get_default_dir () const;
40 virtual void do_add_processing ();
41 // URG: see Dynamic_engraver::do_removal_processing
42 friend class Dynamic_engraver;
43 virtual void do_post_processing ();
46 void translate_elements (Real);
47 Real get_extreme_y () const;
50 Dynamic_line_spanner::Dynamic_line_spanner ()
52 set_elt_property ("transparent", SCM_BOOL_T);
56 Dynamic_line_spanner::add_element (Score_element* e)
58 Group_interface gi (this, "elements");
61 Side_position_interface (e).set_axis (Y_AXIS);
66 Dynamic_line_spanner::add_column (Note_column* n)
68 Group_interface gi (this, "note-columns");
74 Copied (urg: literally!) from slur.
75 Why not do this once, at post-processing stage?
78 Dynamic_line_spanner::do_add_processing ()
80 Link_array<Note_column> encompass_arr =
81 Group_interface__extract_elements (this, (Note_column*)0, "note-columns");
83 if (encompass_arr.size ())
85 set_bounds (LEFT, encompass_arr[0]);
86 if (encompass_arr.size () > 1)
87 set_bounds (RIGHT, encompass_arr.top ());
93 Dynamic_line_spanner::do_brew_molecule () const
100 Dynamic_line_spanner::do_post_processing ()
102 translate_elements (get_extreme_y ());
106 Dynamic_line_spanner::translate_elements (Real dy)
108 SCM s = get_elt_property ("elements");
109 for (; gh_pair_p (s); s = gh_cdr (s))
111 Score_element* se = unsmob_element (gh_car (s));
112 se->translate_axis (dy, Y_AXIS);
117 Dynamic_line_spanner::get_default_dir () const
120 //Direction dir = directional_element (this).get ();
124 Dynamic_line_spanner::get_extreme_y () const
126 Link_array<Note_column> encompass_arr =
127 Group_interface__extract_elements (this, (Note_column*)0, "note-columns");
129 Staff_symbol_referencer_interface si (this);
130 int stafflines = si.line_count ();
132 stafflines = stafflines != 0 ? stafflines : 5;
133 Direction dir = get_default_dir ();
135 Real staff_space = si.staff_space ();
136 // burp? when are these available?
137 staff_space = staff_space != 0 ? staff_space : 5 PT;
139 // urg: TODO: padding
140 Real y = (stafflines / 2 + 1) * staff_space;
142 for (int i = 0; i < encompass_arr.size (); i++)
144 Note_column* column = encompass_arr[i];
145 Stem* stem = column->stem_l ();
148 Direction stem_dir = directional_element (stem).get ();
149 if ((stem_dir == dir)
150 && !stem->extent (Y_AXIS).empty_b ())
152 y = y >? (stem->extent (Y_AXIS)[dir]) * dir;
156 y = y >? (column->extent (Y_AXIS)[dir]) * dir;
168 * why handle absolute and span requests in one cryptic engraver,
169 what about Span_dynamic_engraver?
174 - `cresc. poco a poco -- -- --'
178 print text & hairpin dynamics.
180 class Dynamic_engraver : public Engraver
182 Text_item * abs_text_p_;
183 Text_item * cr_text_p_;
184 Crescendo * to_end_cresc_p_;
185 Crescendo * cresc_p_;
187 Span_req * cresc_req_l_;
188 Array<Request*> dynamic_req_l_arr_;
192 We probably need two of these: line-up above and below staff
194 Dynamic_line_spanner* spanner_;
195 Moment last_request_mom_;
200 VIRTUAL_COPY_CONS(Translator);
205 void announce_element (Score_element_info);
207 virtual void do_removal_processing ();
208 virtual void acknowledge_element (Score_element_info);
209 virtual bool do_try_music (Music *req_l);
210 virtual void do_process_requests();
211 virtual void do_pre_move_processing();
212 virtual void do_post_move_processing();
213 virtual void typeset_element (Score_element*);
216 ADD_THIS_TRANSLATOR (Dynamic_engraver);
219 Dynamic_engraver::announce_element (Score_element_info i)
221 group (i.elem_l_, "interfaces").add_thing (ly_symbol2scm ("dynamic"));
223 Engraver::announce_element (i);
227 Dynamic_engraver::Dynamic_engraver ()
229 do_post_move_processing();
232 to_end_cresc_p_ = cresc_p_ = 0;
240 Dynamic_engraver::do_post_move_processing()
242 dynamic_req_l_arr_.clear();
249 Dynamic_engraver::do_try_music (Music * m)
251 Request * r = dynamic_cast<Request*> (m);
253 if(Text_script_req * d = dynamic_cast <Text_script_req *> (r))
255 if (d->style_str_ != "dynamic")
258 else if (Span_req * s = dynamic_cast <Span_req*> (r))
260 if (s-> span_type_str_ != "crescendo"
261 && s->span_type_str_ != "decrescendo")
269 spanner_ = new Dynamic_line_spanner;
270 last_request_mom_ = now_mom ();
273 for (int i=0; i < dynamic_req_l_arr_.size (); i++)
274 if (r->equal_b (dynamic_req_l_arr_[i]))
277 dynamic_req_l_arr_.push (r);
283 Dynamic_engraver::do_process_requests()
285 Crescendo* new_cresc_p=0;
287 for (int i=0; i < dynamic_req_l_arr_.size(); i++)
289 if (Text_script_req *absd =
290 dynamic_cast<Text_script_req *> ( dynamic_req_l_arr_[i]))
294 dynamic_req_l_arr_[i]->warning (_("Got a dynamic already. Continuing dazed and confused."));
298 String loud = absd->text_str_;
300 abs_text_p_ = new Text_item;
301 abs_text_p_->set_elt_property ("text",
302 ly_str02scm (loud.ch_C()));
303 abs_text_p_->set_elt_property ("style", gh_str02scm ("dynamic"));
304 abs_text_p_->set_elt_property ("script-priority",
309 spanner_->add_element (abs_text_p_);
311 Side_position_interface (abs_text_p_).set_axis (Y_AXIS);
313 if (absd->get_direction ())
315 abs_text_p_->set_elt_property ("direction", gh_int2scm (absd->get_direction ()));
322 SCM prop = get_property ("dynamicDirection");
325 prop = get_property ("verticalDirection");
328 if (isdir_b (prop) && to_dir (prop))
329 abs_text_p_->set_elt_property ("direction", prop);
331 prop = get_property ("dynamicPadding");
332 if (gh_number_p(prop))
334 abs_text_p_->set_elt_property ("padding", prop);
337 announce_element (Score_element_info (abs_text_p_, absd));
340 else if (Span_req *span_l
341 = dynamic_cast <Span_req *> (dynamic_req_l_arr_[i]))
343 if (span_l->span_dir_ == STOP)
347 span_l->warning (_ ("Can't find (de)crescendo to end"));
351 assert (!to_end_cresc_p_);
352 to_end_cresc_p_ =cresc_p_;
357 else if (span_l->span_dir_ == START)
359 cresc_req_l_ = span_l;
360 assert (!new_cresc_p);
361 new_cresc_p = new Crescendo;
362 new_cresc_p->set_elt_property
364 gh_int2scm ((span_l->span_type_str_ == "crescendo")
365 ? BIGGER : SMALLER));
367 SCM s = get_property (span_l->span_type_str_ + "Text");
370 cr_text_p_ = new Text_item;
371 cr_text_p_->set_elt_property ("text", s);
373 cr_text_p_->set_elt_property ("style", gh_str02scm ("italic"));
375 cr_text_p_->set_elt_property ("script-priority",
380 I'd like to have support like this:
391 if (0) //abs_text_p_)
393 Side_position_interface (cr_text_p_).set_axis (X_AXIS);
394 Side_position_interface (cr_text_p_).add_support (abs_text_p_);
399 spanner_->add_element (cr_text_p_);
402 //Side_position_interface (cr_text_p_).set_axis (Y_AXIS);
403 announce_element (Score_element_info (cr_text_p_, span_l));
406 s = get_property (span_l->span_type_str_ + "Spanner");
407 if (gh_string_p (s)) //&& ly_scm2string (s) != "hairpin")
409 new_cresc_p->set_elt_property ("spanner", s);
414 spanner_->add_element (new_cresc_p);
416 // what's the diff between side_position and Side_pos_iface?
417 side_position (new_cresc_p).set_axis (Y_AXIS);
419 announce_element (Score_element_info (new_cresc_p, span_l));
428 ::warning (_ ("Too many crescendi here"));
430 typeset_element (cresc_p_);
435 cresc_p_ = new_cresc_p;
436 cresc_p_->set_bounds(LEFT,get_staff_info().musical_pcol_l ());
438 // arrragh, brr, urg: we know how wide text is, no?
441 index_set_cell (cresc_p_->get_elt_property ("dynamic-drul"),
444 index_set_cell (to_end_cresc_p_->get_elt_property ("dynamic-drul"),
452 Dynamic_engraver::do_pre_move_processing()
458 Dynamic_engraver::do_removal_processing ()
462 typeset_element (cresc_p_ );
463 cresc_req_l_->warning (_ ("unended crescendo"));
469 // URG urg. We did't get a post_processing call !?
470 spanner_->do_post_processing ();
471 typeset_element (spanner_);
480 Dynamic_engraver::typeset_all ()
484 to_end_cresc_p_->set_bounds(RIGHT,get_staff_info().musical_pcol_l ());
485 typeset_element (to_end_cresc_p_);
493 typeset_element (abs_text_p_);
499 typeset_element (cr_text_p_);
504 TODO: This should be optionised:
505 * break when group of dynamic requests ends
507 * continue through piece
509 if (spanner_ && last_request_mom_ < now_mom ())
511 typeset_element (spanner_);
518 Dynamic_engraver::typeset_element (Score_element * e)
521 side_position(e).add_staff_support ();
523 Engraver::typeset_element (e);
529 Dynamic_engraver::acknowledge_element (Score_element_info i)
533 if (Note_column* n = dynamic_cast<Note_column*> (i.elem_l_))
534 spanner_->add_column (n);
541 Dynamic_engraver::acknowledge_element (Score_element_info i)
543 if (dynamic_cast<Stem *> (i.elem_l_)
544 || dynamic_cast<Note_head *> (i.elem_l_)
548 Side_position_interface (abs_text_p_).add_support (i.elem_l_);
550 if (cr_text_p_) ///&& !abs_text_p_)
552 Side_position_interface (cr_text_p_).set_axis (Y_AXIS);
553 Side_position_interface (cr_text_p_).add_support (i.elem_l_);
557 Side_position_interface (to_end_cresc_p_).add_support (i.elem_l_);
560 Side_position_interface(cresc_p_).add_support (i.elem_l_);