2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2010 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 Drul_array
<Stream_event
*> events_
;
52 Stream_event
*running_slur_start_
;
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 ()
81 events_
[START
] = events_
[STOP
] = 0;
84 IMPLEMENT_TRANSLATOR_LISTENER (Slur_engraver
, slur
);
86 Slur_engraver::listen_slur (Stream_event
*ev
)
88 Direction d
= to_dir (ev
->get_property ("span-direction"));
90 ASSIGN_EVENT_ONCE (events_
[START
], ev
);
92 ASSIGN_EVENT_ONCE (events_
[STOP
], ev
);
93 else ev
->origin ()->warning (_f ("direction of %s invalid: %d",
94 "slur-event", int (d
)));
98 Slur_engraver::set_melisma (bool m
)
100 context ()->set_property ("slurMelismaBusy", m
? SCM_BOOL_T
: SCM_BOOL_F
);
104 Slur_engraver::acknowledge_note_column (Grob_info info
)
106 Grob
*e
= info
.grob ();
107 for (vsize i
= slurs_
.size (); i
--;)
108 Slur::add_column (slurs_
[i
], e
);
109 for (vsize i
= end_slurs_
.size (); i
--;)
110 Slur::add_column (end_slurs_
[i
], e
);
114 Slur_engraver::acknowledge_extra_object (Grob_info info
)
116 Slur::auxiliary_acknowledge_extra_object (info
, slurs_
, end_slurs_
);
120 Slur_engraver::acknowledge_accidental (Grob_info info
)
122 acknowledge_extra_object (info
);
126 Slur_engraver::acknowledge_fingering (Grob_info info
)
128 acknowledge_extra_object (info
);
132 Slur_engraver::acknowledge_tuplet_number (Grob_info info
)
134 acknowledge_extra_object (info
);
139 Slur_engraver::acknowledge_script (Grob_info info
)
141 if (!info
.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-interface")))
142 acknowledge_extra_object (info
);
146 Slur_engraver::acknowledge_text_script (Grob_info info
)
148 acknowledge_extra_object (info
);
152 Slur_engraver::acknowledge_tie (Grob_info info
)
154 acknowledge_extra_object (info
);
158 Slur_engraver::finalize ()
162 slurs_
[0]->warning (_ ("unterminated slur"));
163 for (vsize i
= 0; i
< slurs_
.size (); i
++)
164 slurs_
[i
]->suicide ();
169 Slur_engraver::process_music ()
173 if (slurs_
.size () == 0)
174 events_
[STOP
]->origin ()->warning (_ ("cannot end slur"));
181 if (events_
[START
] && slurs_
.empty ())
183 Stream_event
*ev
= events_
[START
];
185 bool double_slurs
= to_boolean (get_property ("doubleSlurs"));
187 Grob
*slur
= make_spanner ("Slur", events_
[START
]->self_scm ());
188 Direction updown
= to_dir (ev
->get_property ("direction"));
189 if (updown
&& !double_slurs
)
190 set_grob_direction (slur
, updown
);
192 slurs_
.push_back (slur
);
196 set_grob_direction (slur
, DOWN
);
197 slur
= make_spanner ("Slur", events_
[START
]->self_scm ());
198 set_grob_direction (slur
, UP
);
199 slurs_
.push_back (slur
);
202 set_melisma (slurs_
.size ());
206 Slur_engraver::stop_translation_timestep ()
208 if (Grob
*g
= unsmob_grob (get_property ("currentCommandColumn")))
210 for (vsize i
= 0; i
< end_slurs_
.size (); i
++)
211 Slur::add_extra_encompass (end_slurs_
[i
], g
);
214 for (vsize i
= 0; i
< slurs_
.size (); i
++)
215 Slur::add_extra_encompass (slurs_
[i
], g
);
219 for (vsize i
= 0; i
< end_slurs_
.size (); i
++)
221 Spanner
* s
= dynamic_cast<Spanner
*> (end_slurs_
[i
]);
222 if (!s
->get_bound (RIGHT
))
223 s
->set_bound (RIGHT
, unsmob_grob (get_property ("currentMusicalColumn")));
224 announce_end_grob (s
, SCM_EOL
);
227 events_
[START
] = events_
[STOP
] = 0;
230 ADD_ACKNOWLEDGER (Slur_engraver
, accidental
);
231 ADD_ACKNOWLEDGER (Slur_engraver
, fingering
);
232 ADD_ACKNOWLEDGER (Slur_engraver
, note_column
);
233 ADD_ACKNOWLEDGER (Slur_engraver
, script
);
234 ADD_ACKNOWLEDGER (Slur_engraver
, text_script
);
235 ADD_ACKNOWLEDGER (Slur_engraver
, tie
);
236 ADD_ACKNOWLEDGER (Slur_engraver
, tuplet_number
);
237 ADD_TRANSLATOR (Slur_engraver
,
239 "Build slur grobs from slur events.",