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"
37 This is largely similar to Phrasing_slur_engraver. Check if fixes
40 (on principle, engravers don't use inheritance for code sharing)
45 It is possible that a slur starts and ends on the same note. At
46 least, it is for phrasing slurs: a note can be both beginning and
49 class Slur_engraver : public Engraver
51 vector<Stream_event *> start_events_;
52 vector<Stream_event *> stop_events_;
54 vector<Grob*> end_slurs_;
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 ();
76 TRANSLATOR_DECLARATIONS (Slur_engraver);
79 Slur_engraver::Slur_engraver ()
83 IMPLEMENT_TRANSLATOR_LISTENER (Slur_engraver, slur);
85 Slur_engraver::listen_slur (Stream_event *ev)
87 Direction d = to_dir (ev->get_property ("span-direction"));
89 start_events_.push_back(ev);
91 stop_events_.push_back(ev);
92 else ev->origin ()->warning (_f ("direction of %s invalid: %d",
93 "slur-event", int (d)));
97 Slur_engraver::set_melisma (bool m)
99 context ()->set_property ("slurMelismaBusy", m ? SCM_BOOL_T : SCM_BOOL_F);
103 Slur_engraver::acknowledge_note_column (Grob_info info)
105 Grob *e = info.grob ();
106 for (vsize i = slurs_.size (); i--;)
107 Slur::add_column (slurs_[i], e);
108 for (vsize i = end_slurs_.size (); i--;)
109 Slur::add_column (end_slurs_[i], e);
113 Slur_engraver::acknowledge_extra_object (Grob_info info)
115 Slur::auxiliary_acknowledge_extra_object (info, slurs_, end_slurs_);
119 Slur_engraver::acknowledge_accidental (Grob_info info)
121 acknowledge_extra_object (info);
125 Slur_engraver::acknowledge_fingering (Grob_info info)
127 acknowledge_extra_object (info);
131 Slur_engraver::acknowledge_tuplet_number (Grob_info info)
133 acknowledge_extra_object (info);
137 Slur_engraver::acknowledge_script (Grob_info info)
139 if (!info.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-interface")))
140 acknowledge_extra_object (info);
144 Slur_engraver::acknowledge_text_script (Grob_info info)
146 acknowledge_extra_object (info);
150 Slur_engraver::acknowledge_tie (Grob_info info)
152 acknowledge_extra_object (info);
156 Slur_engraver::finalize ()
158 for (vsize i = 0; i < slurs_.size (); i++)
160 slurs_[i]->warning (_ ("unterminated slur"));
161 slurs_[i]->suicide ();
166 Slur_engraver::process_music ()
168 for (vsize i = 0; i < stop_events_.size (); i++)
170 Stream_event *ev = stop_events_[i];
171 string id = robust_scm2string (ev->get_property ("spanner-id"), "");
173 // Find the slur that is ended with this event (by checking the spanner-id)
175 for (vsize j = slurs_.size (); j--;)
177 if (id == robust_scm2string (slurs_[j]->get_property ("spanner-id"), ""))
180 end_slurs_.push_back (slurs_[j]);
181 slurs_.erase (slurs_.begin () + j);
185 ev->origin ()->warning (_ ("cannot end slur"));
188 for (vsize i = start_events_.size (); i--;)
190 Stream_event *ev = start_events_[i];
191 string id = robust_scm2string (ev->get_property ("spanner-id"), "");
192 bool have_slur = false;
193 // Check if we already have a slur with the same spanner-id.
194 // In that case, don't create a new slur, but print a warning
195 for (vsize j = 0; j < slurs_.size (); j++)
196 have_slur = have_slur || (id == robust_scm2string (slurs_[j]->get_property ("spanner-id"), ""));
200 // We already have a slur, so give a warning and completely ignore
202 ev->origin ()->warning(_ ("already have slur"));
203 start_events_.erase (start_events_.begin () + i);
207 Grob *slur = make_spanner ("Slur", ev->self_scm ());
208 Direction updown = to_dir (ev->get_property ("direction"));
209 slur->set_property ("spanner-id", ly_string2scm (id));
211 set_grob_direction (slur, updown);
212 slurs_.push_back (slur);
214 if (to_boolean (get_property ("doubleSlurs")))
216 set_grob_direction (slur, DOWN);
217 slur = make_spanner ("Slur", ev->self_scm ());
218 slur->set_property ("spanner-id", ly_string2scm (id));
219 set_grob_direction (slur, UP);
220 slurs_.push_back (slur);
224 set_melisma (slurs_.size ());
228 Slur_engraver::stop_translation_timestep ()
230 if (Grob *g = unsmob_grob (get_property ("currentCommandColumn")))
232 for (vsize i = 0; i < end_slurs_.size (); i++)
233 Slur::add_extra_encompass (end_slurs_[i], g);
235 if (!start_events_.size ())
236 for (vsize i = 0; i < slurs_.size (); i++)
237 Slur::add_extra_encompass (slurs_[i], g);
241 for (vsize i = 0; i < end_slurs_.size (); i++)
243 Spanner * s = dynamic_cast<Spanner*> (end_slurs_[i]);
244 if (!s->get_bound (RIGHT))
245 s->set_bound (RIGHT, unsmob_grob (get_property ("currentMusicalColumn")));
246 announce_end_grob (s, SCM_EOL);
249 start_events_.clear ();
250 stop_events_.clear ();
253 ADD_ACKNOWLEDGER (Slur_engraver, accidental);
254 ADD_ACKNOWLEDGER (Slur_engraver, fingering);
255 ADD_ACKNOWLEDGER (Slur_engraver, note_column);
256 ADD_ACKNOWLEDGER (Slur_engraver, script);
257 ADD_ACKNOWLEDGER (Slur_engraver, text_script);
258 ADD_ACKNOWLEDGER (Slur_engraver, tie);
259 ADD_ACKNOWLEDGER (Slur_engraver, tuplet_number);
260 ADD_TRANSLATOR (Slur_engraver,
262 "Build slur grobs from slur events.",