2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2011 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"
36 This is largely similar to Phrasing_slur_engraver. Check if fixes
39 (on principle, engravers don't use inheritance for code sharing)
44 It is possible that a slur starts and ends on the same note. At
45 least, it is for phrasing slurs: a note can be both beginning and
48 class Slur_engraver : public Engraver
50 vector<Stream_event *> start_events_;
51 vector<Stream_event *> stop_events_;
52 vector<Grob *> slurs_;
53 vector<Grob *> end_slurs_;
54 vector<Grob_info> objects_to_acknowledge_;
56 void set_melisma (bool);
59 DECLARE_TRANSLATOR_LISTENER (slur);
60 DECLARE_ACKNOWLEDGER (accidental);
61 DECLARE_ACKNOWLEDGER (fingering);
62 DECLARE_ACKNOWLEDGER (note_column);
63 DECLARE_ACKNOWLEDGER (script);
64 DECLARE_ACKNOWLEDGER (text_script);
65 DECLARE_ACKNOWLEDGER (tie);
66 DECLARE_ACKNOWLEDGER (tuplet_number);
68 void acknowledge_extra_object (Grob_info);
69 void stop_translation_timestep ();
70 void process_music ();
72 virtual void finalize ();
75 TRANSLATOR_DECLARATIONS (Slur_engraver);
78 Slur_engraver::Slur_engraver ()
82 IMPLEMENT_TRANSLATOR_LISTENER (Slur_engraver, slur);
84 Slur_engraver::listen_slur (Stream_event *ev)
86 Direction d = to_dir (ev->get_property ("span-direction"));
88 start_events_.push_back (ev);
90 stop_events_.push_back (ev);
91 else ev->origin ()->warning (_f ("direction of %s invalid: %d",
92 "slur-event", int (d)));
96 Slur_engraver::set_melisma (bool m)
98 context ()->set_property ("slurMelismaBusy", m ? SCM_BOOL_T : SCM_BOOL_F);
102 Slur_engraver::acknowledge_note_column (Grob_info info)
104 Grob *e = info.grob ();
105 for (vsize i = slurs_.size (); i--;)
106 Slur::add_column (slurs_[i], e);
107 for (vsize i = end_slurs_.size (); i--;)
108 Slur::add_column (end_slurs_[i], e);
112 Slur_engraver::acknowledge_extra_object (Grob_info info)
114 objects_to_acknowledge_.push_back (info);
118 Slur_engraver::acknowledge_accidental (Grob_info info)
120 acknowledge_extra_object (info);
124 Slur_engraver::acknowledge_fingering (Grob_info info)
126 acknowledge_extra_object (info);
130 Slur_engraver::acknowledge_tuplet_number (Grob_info info)
132 acknowledge_extra_object (info);
136 Slur_engraver::acknowledge_script (Grob_info info)
138 if (!info.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-interface")))
139 acknowledge_extra_object (info);
143 Slur_engraver::acknowledge_text_script (Grob_info info)
145 acknowledge_extra_object (info);
149 Slur_engraver::acknowledge_tie (Grob_info info)
151 acknowledge_extra_object (info);
155 Slur_engraver::finalize ()
157 for (vsize i = 0; i < slurs_.size (); i++)
159 slurs_[i]->warning (_ ("unterminated slur"));
160 slurs_[i]->suicide ();
165 Slur_engraver::process_music ()
167 for (vsize i = 0; i < stop_events_.size (); i++)
169 Stream_event *ev = stop_events_[i];
170 string id = robust_scm2string (ev->get_property ("spanner-id"), "");
172 // Find the slur that is ended with this event (by checking the spanner-id)
174 for (vsize j = slurs_.size (); j--;)
176 if (id == robust_scm2string (slurs_[j]->get_property ("spanner-id"), ""))
179 end_slurs_.push_back (slurs_[j]);
180 slurs_.erase (slurs_.begin () + j);
184 ev->origin ()->warning (_ ("cannot end slur"));
187 for (vsize i = start_events_.size (); i--;)
189 Stream_event *ev = start_events_[i];
190 string id = robust_scm2string (ev->get_property ("spanner-id"), "");
191 bool have_slur = false;
192 // Check if we already have a slur with the same spanner-id.
193 // In that case, don't create a new slur, but print a warning
194 for (vsize j = 0; j < slurs_.size (); j++)
195 have_slur = have_slur || (id == robust_scm2string (slurs_[j]->get_property ("spanner-id"), ""));
199 // We already have a slur, so give a warning and completely ignore
201 ev->origin ()->warning (_ ("already have slur"));
202 start_events_.erase (start_events_.begin () + i);
206 Grob *slur = make_spanner ("Slur", ev->self_scm ());
207 Direction updown = to_dir (ev->get_property ("direction"));
208 slur->set_property ("spanner-id", ly_string2scm (id));
210 set_grob_direction (slur, updown);
211 slurs_.push_back (slur);
213 if (to_boolean (get_property ("doubleSlurs")))
215 set_grob_direction (slur, DOWN);
216 slur = make_spanner ("Slur", ev->self_scm ());
217 slur->set_property ("spanner-id", ly_string2scm (id));
218 set_grob_direction (slur, UP);
219 slurs_.push_back (slur);
223 set_melisma (slurs_.size ());
227 Slur_engraver::stop_translation_timestep ()
229 if (Grob *g = unsmob_grob (get_property ("currentCommandColumn")))
231 for (vsize i = 0; i < end_slurs_.size (); i++)
232 Slur::add_extra_encompass (end_slurs_[i], g);
234 if (!start_events_.size ())
235 for (vsize i = 0; i < slurs_.size (); i++)
236 Slur::add_extra_encompass (slurs_[i], g);
239 for (vsize i = 0; i < end_slurs_.size (); i++)
241 Spanner *s = dynamic_cast<Spanner *> (end_slurs_[i]);
242 if (!s->get_bound (RIGHT))
243 s->set_bound (RIGHT, unsmob_grob (get_property ("currentMusicalColumn")));
244 announce_end_grob (s, SCM_EOL);
247 for (vsize i = 0; i < objects_to_acknowledge_.size (); i++)
248 Slur::auxiliary_acknowledge_extra_object (objects_to_acknowledge_[i], slurs_, end_slurs_);
250 objects_to_acknowledge_.clear ();
252 start_events_.clear ();
253 stop_events_.clear ();
256 ADD_ACKNOWLEDGER (Slur_engraver, accidental);
257 ADD_ACKNOWLEDGER (Slur_engraver, fingering);
258 ADD_ACKNOWLEDGER (Slur_engraver, note_column);
259 ADD_ACKNOWLEDGER (Slur_engraver, script);
260 ADD_ACKNOWLEDGER (Slur_engraver, text_script);
261 ADD_ACKNOWLEDGER (Slur_engraver, tie);
262 ADD_ACKNOWLEDGER (Slur_engraver, tuplet_number);
263 ADD_TRANSLATOR (Slur_engraver,
265 "Build slur grobs from slur events.",