2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2000--2015 Jan Nieuwenhuizen <janneke@gnu.org>,
5 Erik Sandberg <mandolaerik@gmail.com>
7 Chris Jackson <chris@fluffhouse.org.uk> - extended to support
10 LilyPond is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation, either version 3 of the License, or
13 (at your option) any later version.
15 LilyPond is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
24 #include "engraver.hh"
26 #include "axis-group-interface.hh"
28 #include "directional-element-interface.hh"
29 #include "international.hh"
30 #include "lily-guile.hh"
31 #include "note-column.hh"
32 #include "side-position-interface.hh"
33 #include "staff-symbol-referencer.hh"
34 #include "stream-event.hh"
35 #include "string-convert.hh"
40 #include "translator.icc"
47 * Junk hardcoded sustain/sostenuto/una_corda distinction;
48 Softcode using (list (sustain-event SustainPedal PianoPedalBracket) ... )
50 * Try to use same engraver for dynamics.
53 /* Ugh: This declaration is duplicated in piano-pedal-performer */
63 Static precalculated data (symbols and strings) for the different
66 struct Pedal_type_info
73 const char *pedal_c_str_;
77 event_class_sym_ = SCM_EOL;
79 strings_sym_ = SCM_EOL;
84 scm_gc_protect_object (event_class_sym_);
85 scm_gc_protect_object (style_sym_);
86 scm_gc_protect_object (strings_sym_);
92 const Pedal_type_info *type_;
95 Event for currently running pedal.
97 Stream_event *current_bracket_ev_;
100 Event for currently starting pedal, (necessary?
102 distinct from current_bracket_ev_, since current_bracket_ev_ only
103 necessary for brackets, not for text style.
105 Stream_event *start_ev_;
108 Events that were found in this timestep.
110 Drul_array<Stream_event *> event_drul_;
112 Spanner *bracket_; // A single portion of a pedal bracket
113 Spanner *finished_bracket_;
116 static Pedal_type_info pedal_types_[NUM_PEDAL_TYPES];
118 class Piano_pedal_engraver : public Engraver
121 TRANSLATOR_DECLARATIONS (Piano_pedal_engraver);
124 virtual void initialize ();
125 virtual void finalize ();
126 void listen_sustain (Stream_event *);
127 void listen_una_corda (Stream_event *);
128 void listen_sostenuto (Stream_event *);
129 void stop_translation_timestep ();
130 void process_music ();
133 Pedal_info info_list_[NUM_PEDAL_TYPES + 1];
135 void create_text_grobs (Pedal_info *p, bool);
136 void create_bracket_grobs (Pedal_info *p, bool);
137 void typeset_all (Pedal_info *p);
143 const char *names [NUM_PEDAL_TYPES];
144 names[SOSTENUTO] = "Sostenuto";
145 names[SUSTAIN] = "Sustain";
146 names[UNA_CORDA] = "UnaCorda";
148 for (int i = 0; i < NUM_PEDAL_TYPES; i++)
150 const char *name = names[i];
152 string base_name = name;
154 string base_ident = "";
157 for (cur_pos = 1; name[cur_pos]; cur_pos++)
158 if (isupper (name[cur_pos]))
160 base_ident = base_ident + String_convert::to_lower (string (name, prev_pos, cur_pos - prev_pos)) + "-";
163 base_ident += String_convert::to_lower (string (name, prev_pos, cur_pos - prev_pos));
166 be careful, as we don't want to loose references to the _sym_ members.
168 Pedal_type_info info;
169 info.event_class_sym_ = scm_from_ascii_symbol ((base_ident + "-event").c_str ());
170 info.style_sym_ = scm_from_ascii_symbol (("pedal" + base_name + "Style").c_str ());
171 info.strings_sym_ = scm_from_ascii_symbol (("pedal" + base_name + "Strings").c_str ());
173 info.base_name_ = name;
174 info.pedal_c_str_ = strdup ((base_name + "Pedal").c_str ());
178 pedal_types_[i] = info;
182 ADD_SCM_INIT_FUNC (Piano_pedal_engraver_init_pedal_types_, init_pedal_types);
184 Piano_pedal_engraver::Piano_pedal_engraver (Context *c)
190 Piano_pedal_engraver::initialize ()
192 for (int i = 0; i < NUM_PEDAL_TYPES; i++)
194 Pedal_type_info *s = &pedal_types_[i];
195 Pedal_info *info = &info_list_[i];
200 info->finished_bracket_ = 0;
201 info->current_bracket_ev_ = 0;
202 info->event_drul_[START] = 0;
203 info->event_drul_[STOP] = 0;
206 info_list_[NUM_PEDAL_TYPES].type_ = 0;
210 Piano_pedal_engraver::listen_sostenuto (Stream_event *ev)
212 Direction d = to_dir (ev->get_property ("span-direction"));
213 ASSIGN_EVENT_ONCE (info_list_[SOSTENUTO].event_drul_[d], ev);
217 Piano_pedal_engraver::listen_sustain (Stream_event *ev)
219 Direction d = to_dir (ev->get_property ("span-direction"));
220 ASSIGN_EVENT_ONCE (info_list_[SUSTAIN].event_drul_[d], ev);
224 Piano_pedal_engraver::listen_una_corda (Stream_event *ev)
226 Direction d = to_dir (ev->get_property ("span-direction"));
227 ASSIGN_EVENT_ONCE (info_list_[UNA_CORDA].event_drul_[d], ev);
231 Piano_pedal_engraver::process_music ()
233 for (Pedal_info *p = info_list_; p->type_; p++)
235 if (p->event_drul_[STOP] || p->event_drul_[START])
237 /* Choose the appropriate grobs to add to the line spanner
238 These can be text items or text-spanners
242 ugh, code dup, should read grob to create from other
245 bracket: |_________/\____|
247 mixed: Ped. _____/\____|
250 SCM style = get_property (p->type_->style_sym_);
252 bool mixed = scm_is_eq (style, ly_symbol2scm ("mixed"));
253 bool bracket = (mixed
254 || scm_is_eq (style, ly_symbol2scm ("bracket")));
256 || scm_is_eq (style, ly_symbol2scm ("text")));
258 if (text && !p->item_)
259 create_text_grobs (p, mixed);
261 create_bracket_grobs (p, mixed);
267 Piano_pedal_engraver::create_text_grobs (Pedal_info *p, bool mixed)
270 SCM strings = get_property (p->type_->strings_sym_);
272 if (scm_ilength (strings) < 3)
274 Stream_event *m = p->event_drul_[START];
275 if (!m) m = p->event_drul_ [STOP];
277 string msg = _f ("expect 3 strings for piano pedals, found: %ld",
278 scm_ilength (strings));
280 m->origin ()->warning (msg);
287 if (p->event_drul_[STOP] && p->event_drul_[START])
292 p->event_drul_[STOP]->origin ()->warning (_f ("cannot find start of piano pedal: `%s'", p->type_->base_name_.c_str ()));
294 s = scm_cadr (strings);
295 p->start_ev_ = p->event_drul_[START];
298 else if (p->event_drul_[STOP])
303 p->event_drul_[STOP]->origin ()->warning (_f ("cannot find start of piano pedal: `%s'", p->type_->base_name_.c_str ()));
305 s = scm_caddr (strings);
309 else if (p->event_drul_[START])
311 p->start_ev_ = p->event_drul_[START];
312 s = scm_car (strings);
315 if (scm_is_string (s))
317 const char *propname = p->type_->pedal_c_str_;
319 p->item_ = make_item (propname, (p->event_drul_[START]
320 ? p->event_drul_[START]
321 : p->event_drul_[STOP])->self_scm ());
323 p->item_->set_property ("text", s);
328 p->event_drul_[START] = 0;
329 p->event_drul_[STOP] = 0;
334 Piano_pedal_engraver::create_bracket_grobs (Pedal_info *p, bool mixed)
336 if (!p->bracket_ && p->event_drul_[STOP])
338 string msg = _f ("cannot find start of piano pedal bracket: `%s'", p->type_->base_name_.c_str ());
339 p->event_drul_[STOP]->origin ()->warning (msg);
340 p->event_drul_[STOP] = 0;
343 if (p->event_drul_[STOP])
345 assert (!p->finished_bracket_);
347 Grob *cmc = unsmob<Grob> (get_property ("currentMusicalColumn"));
348 p->bracket_->set_bound (RIGHT, cmc);
351 Set properties so that the stencil-creating function will
352 know whether the right edge should be flared ___/
355 if (!p->event_drul_[START])
357 SCM flare = p->bracket_->get_property ("bracket-flare");
358 if (scm_is_pair (flare))
359 p->bracket_->set_property ("bracket-flare", scm_cons (scm_car (flare),
360 scm_from_double (0)));
363 p->finished_bracket_ = p->bracket_;
366 announce_end_grob (p->finished_bracket_, p->event_drul_[STOP]->self_scm ());
368 p->current_bracket_ev_ = 0;
371 if (p->event_drul_[START])
373 p->start_ev_ = p->event_drul_[START];
374 p->current_bracket_ev_ = p->event_drul_[START];
376 p->bracket_ = make_spanner ("PianoPedalBracket", p->event_drul_[START]->self_scm ());
379 Set properties so that the stencil-creating function will
380 know whether the left edge should be flared \___
383 if (!p->finished_bracket_)
385 SCM flare = p->bracket_->get_property ("bracket-flare");
386 p->bracket_->set_property ("bracket-flare", scm_cons (scm_from_double (0), scm_cdr (flare)));
389 /* Set this property for 'mixed style' pedals, Ped._______/\ ,
390 so the stencil function will shorten the ____ line by the length of the Ped. text.
396 Mixed style: Store a pointer to the preceding text for use in
397 calculating the length of the line
402 WTF is pedal-text not the bound of the object? --hwn
405 p->bracket_->set_object ("pedal-text", p->item_->self_scm ());
409 p->event_drul_[START] = 0;
410 p->event_drul_[STOP] = 0;
414 Piano_pedal_engraver::finalize ()
416 for (Pedal_info *p = info_list_; p->type_; p++)
419 && !p->bracket_->is_live ())
424 SCM cc = get_property ("currentCommandColumn");
425 Item *c = unsmob<Item> (cc);
426 p->bracket_->set_bound (RIGHT, c);
428 p->finished_bracket_ = p->bracket_;
437 Piano_pedal_engraver::stop_translation_timestep ()
439 for (Pedal_info *p = info_list_; p->type_; p++)
443 if (p->bracket_ && !p->bracket_->get_bound (LEFT))
445 Grob *cmc = unsmob<Grob> (get_property ("currentMusicalColumn"));
446 p->bracket_->set_bound (LEFT, cmc);
450 for (Pedal_info *p = info_list_; p->type_; p++)
452 p->event_drul_[STOP] = 0;
453 p->event_drul_[START] = 0;
458 Piano_pedal_engraver::typeset_all (Pedal_info *p)
463 if (p->finished_bracket_
464 && !p->finished_bracket_->is_live ())
465 p->finished_bracket_ = 0;
470 if (p->finished_bracket_)
472 Grob *r = p->finished_bracket_->get_bound (RIGHT);
474 p->finished_bracket_->set_bound (RIGHT, unsmob<Grob> (get_property ("currentMusicalColumn")));
476 p->finished_bracket_ = 0;
481 Piano_pedal_engraver::boot ()
483 ADD_LISTENER (Piano_pedal_engraver, sostenuto);
484 ADD_LISTENER (Piano_pedal_engraver, sustain);
485 ADD_LISTENER (Piano_pedal_engraver, una_corda);
488 ADD_TRANSLATOR (Piano_pedal_engraver,
490 "Engrave piano pedal symbols and brackets.",
499 "currentCommandColumn "
500 "pedalSostenutoStrings "
501 "pedalSostenutoStyle "
502 "pedalSustainStrings "
504 "pedalUnaCordaStrings "
505 "pedalUnaCordaStyle ",