2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2000--2011 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 DECLARE_TRANSLATOR_LISTENER (sustain);
127 DECLARE_TRANSLATOR_LISTENER (una_corda);
128 DECLARE_TRANSLATOR_LISTENER (sostenuto);
129 DECLARE_ACKNOWLEDGER (note_column);
130 void stop_translation_timestep ();
131 void process_music ();
134 Pedal_info info_list_[NUM_PEDAL_TYPES + 1];
136 void create_text_grobs (Pedal_info *p, bool);
137 void create_bracket_grobs (Pedal_info *p, bool);
138 void typeset_all (Pedal_info *p);
144 const char *names [NUM_PEDAL_TYPES];
145 names[SOSTENUTO] = "Sostenuto";
146 names[SUSTAIN] = "Sustain";
147 names[UNA_CORDA] = "UnaCorda";
149 for (int i = 0; i < NUM_PEDAL_TYPES; i++)
151 const char *name = names[i];
153 string base_name = name;
155 string base_ident = "";
158 for (cur_pos = 1; name[cur_pos]; cur_pos++)
159 if (isupper (name[cur_pos]))
161 base_ident = base_ident + String_convert::to_lower (string (name, prev_pos, cur_pos - prev_pos)) + "-";
164 base_ident += String_convert::to_lower (string (name, prev_pos, cur_pos - prev_pos));
167 be careful, as we don't want to loose references to the _sym_ members.
169 Pedal_type_info info;
170 info.event_class_sym_ = scm_from_locale_symbol ((base_ident + "-event").c_str ());
171 info.style_sym_ = scm_from_locale_symbol (("pedal" + base_name + "Style").c_str ());
172 info.strings_sym_ = scm_from_locale_symbol (("pedal" + base_name + "Strings").c_str ());
174 info.base_name_ = name;
175 info.pedal_c_str_ = strdup ((base_name + "Pedal").c_str ());
179 pedal_types_[i] = info;
183 ADD_SCM_INIT_FUNC (Piano_pedal_engraver_init_pedal_types_, init_pedal_types);
185 Piano_pedal_engraver::Piano_pedal_engraver ()
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;
214 Piano_pedal_engraver::acknowledge_note_column (Grob_info info)
216 for (Pedal_info *p = info_list_; p->type_; p++)
219 add_bound_item (p->bracket_, info.grob ());
220 if (p->finished_bracket_)
221 add_bound_item (p->finished_bracket_, info.grob ());
225 IMPLEMENT_TRANSLATOR_LISTENER (Piano_pedal_engraver, sostenuto);
227 Piano_pedal_engraver::listen_sostenuto (Stream_event *ev)
229 Direction d = to_dir (ev->get_property ("span-direction"));
230 ASSIGN_EVENT_ONCE (info_list_[SOSTENUTO].event_drul_[d], ev);
233 IMPLEMENT_TRANSLATOR_LISTENER (Piano_pedal_engraver, sustain);
235 Piano_pedal_engraver::listen_sustain (Stream_event *ev)
237 Direction d = to_dir (ev->get_property ("span-direction"));
238 ASSIGN_EVENT_ONCE (info_list_[SUSTAIN].event_drul_[d], ev);
241 IMPLEMENT_TRANSLATOR_LISTENER (Piano_pedal_engraver, una_corda);
243 Piano_pedal_engraver::listen_una_corda (Stream_event *ev)
245 Direction d = to_dir (ev->get_property ("span-direction"));
246 ASSIGN_EVENT_ONCE (info_list_[UNA_CORDA].event_drul_[d], ev);
250 Piano_pedal_engraver::process_music ()
252 for (Pedal_info *p = info_list_; p->type_; p++)
254 if (p->event_drul_[STOP] || p->event_drul_[START])
256 /* Choose the appropriate grobs to add to the line spanner
257 These can be text items or text-spanners
261 ugh, code dup, should read grob to create from other
264 bracket: |_________/\____|
266 mixed: Ped. _____/\____|
269 SCM style = internal_get_property (p->type_->style_sym_);
271 bool mixed = style == ly_symbol2scm ("mixed");
272 bool bracket = (mixed
273 || style == ly_symbol2scm ("bracket"));
274 bool text = (style == ly_symbol2scm ("text")
277 if (text && !p->item_)
278 create_text_grobs (p, mixed);
280 create_bracket_grobs (p, mixed);
286 Piano_pedal_engraver::create_text_grobs (Pedal_info *p, bool mixed)
289 SCM strings = internal_get_property (p->type_->strings_sym_);
291 if (scm_ilength (strings) < 3)
293 Stream_event *m = p->event_drul_[START];
294 if (!m) m = p->event_drul_ [STOP];
296 string msg = _f ("expect 3 strings for piano pedals, found: %ld",
297 scm_ilength (strings));
299 m->origin ()->warning (msg);
306 if (p->event_drul_[STOP] && p->event_drul_[START])
311 p->event_drul_[STOP]->origin ()->warning (_f ("cannot find start of piano pedal: `%s'", p->type_->base_name_.c_str ()));
313 s = scm_cadr (strings);
314 p->start_ev_ = p->event_drul_[START];
317 else if (p->event_drul_[STOP])
322 p->event_drul_[STOP]->origin ()->warning (_f ("cannot find start of piano pedal: `%s'", p->type_->base_name_.c_str ()));
324 s = scm_caddr (strings);
328 else if (p->event_drul_[START])
330 p->start_ev_ = p->event_drul_[START];
331 s = scm_car (strings);
334 if (scm_is_string (s))
336 const char *propname = p->type_->pedal_c_str_;
338 p->item_ = make_item (propname, (p->event_drul_[START]
339 ? p->event_drul_[START]
340 : p->event_drul_[STOP])->self_scm ());
342 p->item_->set_property ("text", s);
347 p->event_drul_[START] = 0;
348 p->event_drul_[STOP] = 0;
353 Piano_pedal_engraver::create_bracket_grobs (Pedal_info *p, bool mixed)
355 if (!p->bracket_ && p->event_drul_[STOP])
357 string msg = _f ("cannot find start of piano pedal bracket: `%s'", p->type_->base_name_.c_str ());
358 p->event_drul_[STOP]->origin ()->warning (msg);
359 p->event_drul_[STOP] = 0;
362 if (p->event_drul_[STOP])
364 assert (!p->finished_bracket_);
366 Grob *cmc = unsmob_grob (get_property ("currentMusicalColumn"));
368 if (!p->bracket_->get_bound (RIGHT))
369 p->bracket_->set_bound (RIGHT, cmc);
372 Set properties so that the stencil-creating function will
373 know whether the right edge should be flared ___/
376 if (!p->event_drul_[START])
378 SCM flare = p->bracket_->get_property ("bracket-flare");
379 if (scm_is_pair (flare))
380 p->bracket_->set_property ("bracket-flare", scm_cons (scm_car (flare),
381 scm_from_double (0)));
384 p->finished_bracket_ = p->bracket_;
387 announce_end_grob (p->finished_bracket_, p->event_drul_[STOP]->self_scm ());
389 p->current_bracket_ev_ = 0;
392 if (p->event_drul_[START])
394 p->start_ev_ = p->event_drul_[START];
395 p->current_bracket_ev_ = p->event_drul_[START];
397 p->bracket_ = make_spanner ("PianoPedalBracket", p->event_drul_[START]->self_scm ());
400 Set properties so that the stencil-creating function will
401 know whether the left edge should be flared \___
404 if (!p->finished_bracket_)
406 SCM flare = p->bracket_->get_property ("bracket-flare");
407 p->bracket_->set_property ("bracket-flare", scm_cons (scm_from_double (0), scm_cdr (flare)));
410 /* Set this property for 'mixed style' pedals, Ped._______/\ ,
411 so the stencil function will shorten the ____ line by the length of the Ped. text.
417 Mixed style: Store a pointer to the preceding text for use in
418 calculating the length of the line
423 WTF is pedal-text not the bound of the object? --hwn
426 p->bracket_->set_object ("pedal-text", p->item_->self_scm ());
430 p->event_drul_[START] = 0;
431 p->event_drul_[STOP] = 0;
435 Piano_pedal_engraver::finalize ()
437 for (Pedal_info *p = info_list_; p->type_; p++)
440 && !p->bracket_->is_live ())
445 SCM cc = get_property ("currentCommandColumn");
446 Item *c = unsmob_item (cc);
447 p->bracket_->set_bound (RIGHT, c);
449 p->finished_bracket_ = p->bracket_;
458 Piano_pedal_engraver::stop_translation_timestep ()
460 for (Pedal_info *p = info_list_; p->type_; p++)
464 if (p->bracket_ && !p->bracket_->get_bound (LEFT))
466 Grob *cmc = unsmob_grob (get_property ("currentMusicalColumn"));
468 if (!p->bracket_->get_bound (LEFT))
469 p->bracket_->set_bound (LEFT, cmc);
473 for (Pedal_info *p = info_list_; p->type_; p++)
475 p->event_drul_[STOP] = 0;
476 p->event_drul_[START] = 0;
481 Piano_pedal_engraver::typeset_all (Pedal_info *p)
486 if (p->finished_bracket_
487 && !p->finished_bracket_->is_live ())
488 p->finished_bracket_ = 0;
493 if (p->finished_bracket_)
495 Grob *r = p->finished_bracket_->get_bound (RIGHT);
497 p->finished_bracket_->set_bound (RIGHT, unsmob_grob (get_property ("currentMusicalColumn")));
499 p->finished_bracket_ = 0;
503 ADD_ACKNOWLEDGER (Piano_pedal_engraver, note_column);
505 ADD_TRANSLATOR (Piano_pedal_engraver,
507 "Engrave piano pedal symbols and brackets.",
516 "currentCommandColumn "
517 "pedalSostenutoStrings "
518 "pedalSostenutoStyle "
519 "pedalSustainStrings "
521 "pedalUnaCordaStrings "
522 "pedalUnaCordaStyle ",