2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2012 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/>.
20 #include "engraver.hh"
23 #include "directional-element-interface.hh"
24 #include "international.hh"
25 #include "note-column.hh"
28 #include "stream-event.hh"
31 #include "translator.icc"
38 This is largely similar to Phrasing_slur_engraver. Check if fixes
41 (on principle, engravers don't use inheritance for code sharing)
46 It is possible that a slur starts and ends on the same note. At
47 least, it is for phrasing slurs: a note can be both beginning and
51 Slur_info::Slur_info (Grob *slur)
56 class Slur_engraver : public Engraver
58 vector<Stream_event *> start_events_;
59 vector<Stream_event *> stop_events_;
60 vector<Slur_info> slur_infos_;
61 vector<Slur_info> end_slur_infos_;
62 vector<Grob_info> objects_to_acknowledge_;
64 void set_melisma (bool);
67 DECLARE_TRANSLATOR_LISTENER (slur);
68 DECLARE_ACKNOWLEDGER (inline_accidental);
69 DECLARE_ACKNOWLEDGER (fingering);
70 DECLARE_ACKNOWLEDGER (note_column);
71 DECLARE_ACKNOWLEDGER (script);
72 DECLARE_ACKNOWLEDGER (dots);
73 DECLARE_ACKNOWLEDGER (text_script);
74 DECLARE_END_ACKNOWLEDGER (tie);
75 DECLARE_ACKNOWLEDGER (tuplet_number);
77 void acknowledge_extra_object (Grob_info);
78 void stop_translation_timestep ();
79 void process_music ();
81 virtual void finalize ();
82 virtual void derived_mark () const;
85 TRANSLATOR_DECLARATIONS (Slur_engraver);
88 Slur_engraver::Slur_engraver ()
93 Slur_engraver::derived_mark () const
95 for (vsize i = start_events_.size (); i--;)
96 scm_gc_mark (start_events_[i]->self_scm ());
97 for (vsize i = stop_events_.size (); i--;)
98 scm_gc_mark (stop_events_[i]->self_scm ());
101 IMPLEMENT_TRANSLATOR_LISTENER (Slur_engraver, slur);
103 Slur_engraver::listen_slur (Stream_event *ev)
105 Direction d = to_dir (ev->get_property ("span-direction"));
107 start_events_.push_back (ev);
109 stop_events_.push_back (ev);
110 else ev->origin ()->warning (_f ("direction of %s invalid: %d",
111 "slur-event", int (d)));
115 Slur_engraver::set_melisma (bool m)
117 context ()->set_property ("slurMelismaBusy", m ? SCM_BOOL_T : SCM_BOOL_F);
121 Slur_engraver::acknowledge_note_column (Grob_info info)
124 * For every active slur, we create a slur stub.
125 * As we do not yet know what vertical axis groups note columns belong to,
126 * we create a stub for each note and then suicide duplicate stubs on
128 * These slurs should be used ONLY to approximate cross-staff slurs
129 * in vertical skylines.
132 Grob *e = info.grob ();
133 for (vsize i = slur_infos_.size (); i--;)
135 Slur::add_column (slur_infos_[i].slur_, e);
136 Grob *stub = make_spanner ("SlurStub", info.grob ()->self_scm ());
137 slur_infos_[i].stubs_.push_back (stub);
139 for (vsize i = end_slur_infos_.size (); i--;)
141 Slur::add_column (end_slur_infos_[i].slur_, e);
142 Grob *stub = make_spanner ("SlurStub", info.grob ()->self_scm ());
143 end_slur_infos_[i].stubs_.push_back (stub);
148 Slur_engraver::acknowledge_extra_object (Grob_info info)
150 objects_to_acknowledge_.push_back (info);
154 Slur_engraver::acknowledge_inline_accidental (Grob_info info)
156 acknowledge_extra_object (info);
160 Slur_engraver::acknowledge_dots (Grob_info info)
162 acknowledge_extra_object (info);
166 Slur_engraver::acknowledge_fingering (Grob_info info)
168 acknowledge_extra_object (info);
172 Slur_engraver::acknowledge_tuplet_number (Grob_info info)
174 acknowledge_extra_object (info);
178 Slur_engraver::acknowledge_script (Grob_info info)
180 if (!info.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-interface")))
181 acknowledge_extra_object (info);
185 Slur_engraver::acknowledge_text_script (Grob_info info)
187 acknowledge_extra_object (info);
191 Slur_engraver::acknowledge_end_tie (Grob_info info)
193 acknowledge_extra_object (info);
197 Slur_engraver::finalize ()
199 for (vsize i = 0; i < slur_infos_.size (); i++)
201 slur_infos_[i].slur_->warning (_ ("unterminated slur"));
202 slur_infos_[i].slur_->suicide ();
203 for (vsize j = 0; j < slur_infos_[i].stubs_.size (); j++)
204 slur_infos_[i].stubs_[j]->suicide ();
207 slur_infos_.clear ();
211 Slur_engraver::process_music ()
213 for (vsize i = 0; i < stop_events_.size (); i++)
215 Stream_event *ev = stop_events_[i];
216 string id = robust_scm2string (ev->get_property ("spanner-id"), "");
218 // Find the slurs that are ended with this event (by checking the spanner-id)
220 for (vsize j = slur_infos_.size (); j--;)
222 if (id == robust_scm2string (slur_infos_[j].slur_->get_property ("spanner-id"), ""))
225 end_slur_infos_.push_back (slur_infos_[j]);
226 slur_infos_.erase (slur_infos_.begin () + j);
231 // Ignore redundant stop events for this id
232 for (vsize j = stop_events_.size (); --j > i;)
234 if (id == robust_scm2string (stop_events_[j]->get_property ("spanner-id"), ""))
235 stop_events_.erase (stop_events_.begin () + j);
239 ev->origin ()->warning (_ ("cannot end slur"));
242 vsize old_slurs = slur_infos_.size ();
243 for (vsize i = start_events_.size (); i--;)
245 Stream_event *ev = start_events_[i];
246 string id = robust_scm2string (ev->get_property ("spanner-id"), "");
247 Direction updown = to_dir (ev->get_property ("direction"));
250 for (vsize j = slur_infos_.size (); !(completed = (j-- == 0));)
252 // Check if we already have a slur with the same spanner-id.
253 if (id == robust_scm2string (slur_infos_[j].slur_->get_property ("spanner-id"), ""))
257 // We already have an old slur, so give a warning
258 // and completely ignore the new slur.
259 ev->origin ()->warning (_ ("already have slur"));
260 start_events_.erase (start_events_.begin () + i);
264 // If this slur event has no direction, it will not
265 // contribute anything new to the existing slur(s), so
271 Stream_event *c = unsmob_stream_event (slur_infos_[j].slur_->get_property ("cause"));
275 slur_infos_[j].slur_->programming_error ("slur without a cause");
279 Direction slur_dir = to_dir (c->get_property ("direction"));
281 // If the existing slur does not have a direction yet,
282 // we'd rather take the new one.
286 slur_infos_[j].slur_->suicide ();
287 for (vsize k = 0; k < slur_infos_[j].stubs_.size (); k++)
288 slur_infos_[j].stubs_[k]->suicide ();
289 slur_infos_.erase (slur_infos_.begin () + j);
293 // If the existing slur has the same direction as ours, drop ours
295 if (slur_dir == updown)
299 // If the loop completed, our slur is new
302 Grob *slur = make_spanner ("Slur", ev->self_scm ());
303 slur->set_property ("spanner-id", ly_string2scm (id));
305 set_grob_direction (slur, updown);
306 slur_infos_.push_back (Slur_info (slur));
308 if (to_boolean (get_property ("doubleSlurs")))
310 set_grob_direction (slur, DOWN);
311 slur = make_spanner ("Slur", ev->self_scm ());
312 slur->set_property ("spanner-id", ly_string2scm (id));
313 set_grob_direction (slur, UP);
314 slur_infos_.push_back (Slur_info (slur));
318 set_melisma (slur_infos_.size ());
322 Slur_engraver::stop_translation_timestep ()
324 if (Grob *g = unsmob_grob (get_property ("currentCommandColumn")))
326 for (vsize i = 0; i < end_slur_infos_.size (); i++)
327 Slur::add_extra_encompass (end_slur_infos_[i].slur_, g);
329 if (!start_events_.size ())
330 for (vsize i = 0; i < slur_infos_.size (); i++)
331 Slur::add_extra_encompass (slur_infos_[i].slur_, g);
334 for (vsize i = 0; i < end_slur_infos_.size (); i++)
336 Spanner *s = dynamic_cast<Spanner *> (end_slur_infos_[i].slur_);
337 if (!s->get_bound (RIGHT))
338 s->set_bound (RIGHT, unsmob_grob (get_property ("currentMusicalColumn")));
339 announce_end_grob (s, SCM_EOL);
342 for (vsize i = 0; i < objects_to_acknowledge_.size (); i++)
343 Slur::auxiliary_acknowledge_extra_object (objects_to_acknowledge_[i], slur_infos_, end_slur_infos_);
345 for (vsize i = 0; i < end_slur_infos_.size (); i++)
347 // There are likely SlurStubs we don't need. Get rid of them
348 // and only keep one per VerticalAxisGroup.
350 vector<Grob *> stubs;
351 for (vsize j = 0; j < end_slur_infos_[i].stubs_.size (); j++)
353 Grob *stub = end_slur_infos_[i].stubs_[j];
354 Grob *vag = Grob::get_vertical_axis_group (stub);
357 vector<Grob *>::const_iterator it =
358 find (vags.begin (), vags.end (), vag);
359 if (it != vags.end ())
363 vags.push_back (vag);
364 stubs.push_back (stub);
369 end_slur_infos_[i].slur_->programming_error ("Cannot find vertical axis group for NoteColumn.");
373 for (vsize j = 0; j < stubs.size (); j++)
374 Slur::main_to_stub (end_slur_infos_[i].slur_, stubs[j]);
377 objects_to_acknowledge_.clear ();
378 end_slur_infos_.clear ();
379 start_events_.clear ();
380 stop_events_.clear ();
383 ADD_ACKNOWLEDGER (Slur_engraver, inline_accidental);
384 ADD_ACKNOWLEDGER (Slur_engraver, fingering);
385 ADD_ACKNOWLEDGER (Slur_engraver, note_column);
386 ADD_ACKNOWLEDGER (Slur_engraver, script);
387 ADD_ACKNOWLEDGER (Slur_engraver, text_script);
388 ADD_ACKNOWLEDGER (Slur_engraver, dots);
389 ADD_END_ACKNOWLEDGER (Slur_engraver, tie);
390 ADD_ACKNOWLEDGER (Slur_engraver, tuplet_number);
391 ADD_TRANSLATOR (Slur_engraver,
393 "Build slur grobs from slur events.",