2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
21 #include "directional-element-interface.hh"
22 #include "international.hh"
23 #include "note-column.hh"
24 #include "pointer-group-interface.hh"
25 #include "slur-engraver.hh"
30 #include "translator.icc"
33 Slur_engraver::event_symbol () const
35 return ly_symbol2scm ("slur-event");
39 Slur_engraver::double_property () const
41 return to_boolean (get_property ("doubleSlurs"));
45 Slur_engraver::grob_symbol () const
47 return ly_symbol2scm ("Slur");
51 Slur_engraver::object_name () const
56 Slur_engraver::Slur_engraver ()
61 Slur_engraver::set_melisma (bool m)
63 context ()->set_property ("slurMelismaBusy", ly_bool2scm (m));
67 Slur_engraver::boot ()
69 ADD_LISTENER (Slur_engraver, slur);
70 ADD_LISTENER (Slur_engraver, note);
71 ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, inline_accidental);
72 ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, fingering);
73 ADD_ACKNOWLEDGER (Slur_engraver, note_column);
74 ADD_ACKNOWLEDGER (Slur_engraver, script);
75 ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, text_script);
76 ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, dots);
77 ADD_END_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, tie);
78 ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, tuplet_number);
81 ADD_TRANSLATOR (Slur_engraver,
83 "Build slur grobs from slur events.",
97 Slur_engraver::derived_mark () const
99 for (vsize i = start_events_.size (); i--;)
101 scm_gc_mark (start_events_[i].slur_->self_scm ());
102 if (start_events_[i].note_)
103 scm_gc_mark (start_events_[i].note_->self_scm ());
105 for (vsize i = stop_events_.size (); i--;)
107 scm_gc_mark (stop_events_[i].slur_->self_scm ());
108 if (stop_events_[i].note_)
109 scm_gc_mark (stop_events_[i].note_->self_scm ());
114 Slur_engraver::listen_note_slur (Stream_event *ev, Stream_event *note)
116 Direction d = to_dir (ev->get_property ("span-direction"));
118 start_events_.push_back (Event_info (ev, note));
120 stop_events_.push_back (Event_info (ev, note));
121 else ev->origin ()->warning (_f ("direction of %s invalid: %d",
122 ev->name ().c_str (),
127 Slur_engraver::listen_note (Stream_event *ev)
129 for (SCM arts = ev->get_property ("articulations");
130 scm_is_pair (arts); arts = scm_cdr (arts))
132 Stream_event *art = unsmob<Stream_event> (scm_car (arts));
133 if (art->in_event_class (event_symbol ()))
134 listen_note_slur (art, ev);
139 Slur_engraver::acknowledge_note_column (Grob_info info)
141 Grob *e = info.grob ();
142 for (vsize i = slurs_.size (); i--;)
143 Slur::add_column (slurs_[i], e);
144 for (vsize i = end_slurs_.size (); i--;)
145 Slur::add_column (end_slurs_[i], e);
146 // Now cater for slurs starting/ending at a notehead: those override
148 if (note_slurs_[START].empty () && note_slurs_[STOP].empty ())
150 extract_grob_set (e, "note-heads", heads);
151 for (vsize i = heads.size (); i--;)
153 if (Stream_event *ev =
154 unsmob<Stream_event> (heads[i]->get_property ("cause")))
155 for (LEFT_and_RIGHT (d))
157 std::pair<Note_slurs::const_iterator, Note_slurs::const_iterator> its
158 = note_slurs_[d].equal_range (ev);
159 for (Note_slurs::const_iterator it = its.first;
162 it->second->set_bound (d, heads[i]);
168 Slur_engraver::acknowledge_extra_object (Grob_info info)
170 objects_to_acknowledge_.push_back (info);
174 Slur_engraver::acknowledge_script (Grob_info info)
176 if (!info.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-interface")))
177 acknowledge_extra_object (info);
181 Slur_engraver::finalize ()
183 for (vsize i = 0; i < slurs_.size (); i++)
185 slurs_[i]->warning (_f ("unterminated %s", object_name ()));
186 slurs_[i]->suicide ();
192 Slur_engraver::create_slur (SCM spanner_id, Event_info evi, Grob *g_cause, Direction dir, bool left_broken)
194 Grob *ccc = left_broken
195 ? unsmob<Grob> (get_property ("currentCommandColumn"))
197 SCM cause = evi.slur_ ? evi.slur_->self_scm () : g_cause->self_scm ();
198 Spanner *slur = make_spanner (grob_symbol (), cause);
199 slur->set_property ("spanner-id", spanner_id);
201 set_grob_direction (slur, dir);
203 slur->set_bound (LEFT, ccc);
204 slurs_.push_back (slur);
206 note_slurs_[START].insert (Note_slurs::value_type (evi.note_, slur));
208 if (double_property ())
210 set_grob_direction (slur, DOWN);
211 slur = make_spanner (grob_symbol (), cause);
212 slur->set_property ("spanner-id", spanner_id);
213 set_grob_direction (slur, UP);
215 slur->set_bound (LEFT, ccc);
216 slurs_.push_back (slur);
218 note_slurs_[START].insert(Note_slurs::value_type (evi.note_, slur));
224 Slur_engraver::can_create_slur (SCM id, vsize old_slurs, vsize *event_idx, Stream_event *ev)
226 for (vsize j = slurs_.size (); j--;)
228 Grob *slur = slurs_[j];
229 Direction updown = to_dir (ev->get_property ("direction"));
231 // Check if we already have a slur with the same spanner-id.
232 if (ly_is_equal (id, slur->get_property ("spanner-id")))
236 // We already have an old slur, so give a warning
237 // and completely ignore the new slur.
238 ev->origin ()->warning (_f ("already have %s", object_name ()));
240 start_events_.erase (start_events_.begin () + (*event_idx));
244 // If this slur event has no direction, it will not
245 // contribute anything new to the existing slur(s), so
251 Stream_event *c = unsmob<Stream_event> (slur->get_property ("cause"));
255 slur->programming_error (_f ("%s without a cause", object_name ()));
259 Direction slur_dir = to_dir (c->get_property ("direction"));
261 // If the existing slur does not have a direction yet,
262 // we'd rather take the new one.
267 slurs_.erase (slurs_.begin () + j);
271 // If the existing slur has the same direction as ours, drop ours
273 if (slur_dir == updown)
281 Slur_engraver::try_to_end (Event_info evi)
283 SCM id = evi.slur_->get_property ("spanner-id");
285 // Find the slurs that are ended with this event (by checking the spanner-id)
287 for (vsize j = slurs_.size (); j--;)
289 if (ly_is_equal (id, slurs_[j]->get_property ("spanner-id")))
292 end_slurs_.push_back (slurs_[j]);
294 note_slurs_[STOP].insert
295 (Note_slurs::value_type
296 (evi.note_, dynamic_cast <Spanner *> (slurs_[j])));
297 slurs_.erase (slurs_.begin () + j);
304 Slur_engraver::process_music ()
306 for (vsize i = 0; i < stop_events_.size (); i++)
308 SCM id = stop_events_[i].slur_->get_property ("spanner-id");
309 bool ended = try_to_end (stop_events_[i]);
312 // Ignore redundant stop events for this id
313 for (vsize j = stop_events_.size (); --j > i;)
315 if (ly_is_equal (id, stop_events_[j].slur_->get_property ("spanner-id")))
316 stop_events_.erase (stop_events_.begin () + j);
320 stop_events_[i].slur_->origin ()->warning (_f ("cannot end %s", object_name ()));
323 vsize old_slurs = slurs_.size ();
324 for (vsize i = start_events_.size (); i--;)
326 Stream_event *ev = start_events_[i].slur_;
327 SCM id = ev->get_property ("spanner-id");
328 Direction updown = to_dir (ev->get_property ("direction"));
330 if (can_create_slur (id, old_slurs, &i, ev))
331 create_slur (id, start_events_[i], 0, updown, false);
334 set_melisma (slurs_.size ());
338 Slur_engraver::stop_translation_timestep ()
340 if (Grob *g = unsmob<Grob> (get_property ("currentCommandColumn")))
342 for (vsize i = 0; i < end_slurs_.size (); i++)
343 Slur::add_extra_encompass (end_slurs_[i], g);
345 if (!start_events_.size ())
346 for (vsize i = 0; i < slurs_.size (); i++)
347 Slur::add_extra_encompass (slurs_[i], g);
350 for (vsize i = 0; i < end_slurs_.size (); i++)
352 Spanner *s = dynamic_cast<Spanner *> (end_slurs_[i]);
353 if (!s->get_bound (RIGHT))
354 s->set_bound (RIGHT, unsmob<Grob> (get_property ("currentMusicalColumn")));
355 announce_end_grob (s, SCM_EOL);
358 for (vsize i = 0; i < objects_to_acknowledge_.size (); i++)
359 Slur::auxiliary_acknowledge_extra_object (objects_to_acknowledge_[i], slurs_, end_slurs_);
361 note_slurs_[LEFT].clear ();
362 note_slurs_[RIGHT].clear ();
363 objects_to_acknowledge_.clear ();
365 start_events_.clear ();
366 stop_events_.clear ();