2 fingering-engraver.cc -- implement New_fingering_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "international.hh"
12 #include "rhythmic-head.hh"
13 #include "script-interface.hh"
14 #include "self-alignment-interface.hh"
15 #include "side-position-interface.hh"
17 #include "stream-event.hh"
20 #include "translator.icc"
26 Stream_event *note_event_;
27 Stream_event *finger_event_;
28 bool follow_into_staff_;
35 note_event_ = finger_event_ = 0;
36 follow_into_staff_ = false;
41 operator< (Finger_tuple const &a, Finger_tuple const &b)
43 return a.position_ < b.position_;
46 class New_fingering_engraver : public Engraver
48 vector<Finger_tuple> fingerings_;
49 vector<Finger_tuple> string_fingerings_;
50 vector<Finger_tuple> articulations_;
51 vector<Finger_tuple> string_numbers_;
58 TRANSLATOR_DECLARATIONS (New_fingering_engraver);
60 void stop_translation_timestep ();
61 DECLARE_ACKNOWLEDGER (rhythmic_head);
62 DECLARE_ACKNOWLEDGER (stem);
63 void add_fingering (Grob *, SCM,
64 vector<Finger_tuple> *,
65 Stream_event *, Stream_event *);
66 void add_script (Grob *, Stream_event *, Stream_event *);
67 void add_string (Grob *, Stream_event *, Stream_event *);
68 void position_scripts (SCM orientations, vector<Finger_tuple> *);
72 New_fingering_engraver::acknowledge_rhythmic_head (Grob_info inf)
74 Stream_event *note_ev = inf.event_cause ();
78 SCM arts = note_ev->get_property ("articulations");
80 for (SCM s = arts; scm_is_pair (s); s = scm_cdr (s))
82 Stream_event *ev = unsmob_stream_event (scm_car (s));
87 if (ev->in_event_class ("fingering-event"))
88 add_fingering (inf.grob (),
89 ly_symbol2scm ("Fingering"),
92 else if (ev->in_event_class ("text-script-event"))
93 ev->origin ()->warning (_ ("can't add text scripts to individual note heads"));
94 else if (ev->in_event_class ("script-event"))
95 add_script (inf.grob (), ev, note_ev);
96 else if (ev->in_event_class ("string-number-event"))
97 add_fingering (inf.grob (),
98 ly_symbol2scm ("StringNumber"), &string_numbers_,
100 else if (ev->in_event_class ("string-finger-event"))
101 add_fingering (inf.grob (),
102 ly_symbol2scm ("StringFinger"), &string_fingerings_,
104 else if (ev->in_event_class ("harmonic-event"))
106 inf.grob ()->set_property ("style", ly_symbol2scm ("harmonic"));
107 Grob *d = unsmob_grob (inf.grob ()->get_object ("dot"));
113 heads_.push_back (inf.grob ());
117 New_fingering_engraver::acknowledge_stem (Grob_info inf)
123 New_fingering_engraver::add_script (Grob *head,
131 Grob *g = make_item ("Script", event->self_scm ());
132 make_script_from_event (g, context (),
133 event->get_property ("articulation-type"), 0);
135 ft.script_->set_parent (head, X_AXIS);
137 articulations_.push_back (ft);
141 New_fingering_engraver::add_fingering (Grob *head,
143 vector<Finger_tuple> *tuple_vector,
145 Stream_event *hevent)
149 ft.script_ = internal_make_item (grob_sym, event->self_scm (),
150 ly_symbol2string (grob_sym).c_str (),
151 __FILE__, __LINE__, __FUNCTION__
154 Side_position_interface::add_support (ft.script_, head);
156 ft.finger_event_ = event;
157 ft.note_event_ = hevent;
160 tuple_vector->push_back (ft);
164 New_fingering_engraver::position_scripts (SCM orientations,
165 vector<Finger_tuple> *scripts)
167 for (vsize i = 0; i < scripts->size (); i++)
168 if (stem_ && to_boolean (scripts->at (i).script_->get_property ("add-stem-support")))
169 Side_position_interface::add_support (scripts->at (i).script_, stem_);
172 This is not extremely elegant, but we have to do a little
173 formatting here, because the parent/child relations should be
174 known before we move on to the next time step.
176 A more sophisticated approach would be to set both X and Y parents
177 to the note head, and write a more flexible function for
178 positioning the fingerings, setting both X and Y coordinates.
180 for (vsize i = 0; i < scripts->size (); i++)
181 (*scripts)[i].position_ = scm_to_int ((*scripts)[i].head_->get_property ("staff-position"));
183 for (vsize i = scripts->size (); i--;)
184 for (vsize j = heads_.size (); j--;)
185 Side_position_interface::add_support ((*scripts)[i].script_, heads_[j]);
187 vector<Finger_tuple> up, down, horiz;
188 for (vsize i = scripts->size (); i--;)
190 SCM d = (*scripts)[i].finger_event_->get_property ("direction");
193 ((to_dir (d) == UP) ? up : down).push_back ((*scripts)[i]);
194 scripts->erase (scripts->begin () + i);
198 vector_sort (*scripts, less<Finger_tuple> ());
200 bool up_p = scm_c_memq (ly_symbol2scm ("up"), orientations) != SCM_BOOL_F;
201 bool down_p = scm_c_memq (ly_symbol2scm ("down"), orientations) != SCM_BOOL_F;
202 bool left_p = scm_c_memq (ly_symbol2scm ("left"), orientations) != SCM_BOOL_F;
203 bool right_p = scm_c_memq (ly_symbol2scm ("right"), orientations) != SCM_BOOL_F;
204 Direction hordir = (right_p) ? RIGHT : LEFT;
205 if (left_p || right_p)
207 if (up_p && !up.size () && scripts->size ())
209 up.push_back (scripts->back ());
210 scripts->pop_back ();
213 if (down_p && !down.size () && scripts->size ())
215 down.push_back ((*scripts)[0]);
216 scripts->erase (scripts->begin ());
219 horiz.insert (horiz.end (), scripts->begin (), scripts->end ());
221 else if (up_p && down_p)
223 int center = scripts->size () / 2;
224 down.insert (down.end (), scripts->begin (), scripts->begin () + center);
225 up.insert (up.end (), scripts->begin () + center, scripts->end ());
229 up.insert (up.end (), scripts->begin (), scripts->end ());
236 warning (_ ("no placement found for fingerings"));
237 warning (_ ("placing below"));
239 down.insert (down.end (), scripts->begin (), scripts->end ());
243 for (vsize i = 0; i < horiz.size (); i++)
245 Finger_tuple ft = horiz[i];
246 Grob *f = ft.script_;
247 f->set_parent (ft.head_, X_AXIS);
248 f->set_parent (ft.head_, Y_AXIS);
250 Self_alignment_interface::set_align_self (f, Y_AXIS);
251 Self_alignment_interface::set_center_parent (f, Y_AXIS);
252 Side_position_interface::set_axis (f, X_AXIS);
254 f->set_property ("direction", scm_from_int (hordir));
257 int finger_prio = 200;
260 Drul_array< vector<Finger_tuple> > vertical (down, up);
263 for (vsize i = 0; i < vertical[d].size (); i++)
265 Finger_tuple ft = vertical[d][i];
266 Grob *f = ft.script_;
267 f->set_parent (ft.head_, X_AXIS);
268 f->set_property ("script-priority",
269 scm_from_int (finger_prio + d * ft.position_));
271 Self_alignment_interface::set_align_self (f, X_AXIS);
272 Self_alignment_interface::set_center_parent (f, X_AXIS);
273 Side_position_interface::set_axis (f, Y_AXIS);
275 f->set_property ("direction", scm_from_int (d));
278 while (flip (&d) != DOWN);
282 New_fingering_engraver::stop_translation_timestep ()
291 New_fingering_engraver::position_all ()
293 if (fingerings_.size ())
295 position_scripts (get_property ("fingeringOrientations"),
297 fingerings_.clear ();
300 if (string_numbers_.size ())
302 position_scripts (get_property ("stringNumberOrientations"),
304 string_numbers_.clear ();
307 if (string_fingerings_.size ())
309 position_scripts (get_property ("stringFingerOrientations"),
310 &string_fingerings_);
311 string_fingerings_.clear ();
314 for (vsize i = articulations_.size (); i--;)
316 Grob *script = articulations_[i].script_;
318 for (vsize j = heads_.size (); j--;)
319 Side_position_interface::add_support (script, heads_[j]);
321 if (stem_ && to_dir (script->get_property ("side-relative-direction")))
322 script->set_object ("direction-source", stem_->self_scm ());
324 if (stem_ && to_boolean (script->get_property ("add-stem-support")))
325 Side_position_interface::add_support (script, stem_);
327 articulations_.clear ();
330 New_fingering_engraver::New_fingering_engraver ()
336 ADD_ACKNOWLEDGER (New_fingering_engraver, rhythmic_head);
337 ADD_ACKNOWLEDGER (New_fingering_engraver, stem);
339 ADD_TRANSLATOR (New_fingering_engraver,
340 /* doc */ "Create fingering-scripts for notes in a new chord. "
341 "This engraver is ill-named, since it "
342 "also takes care of articulations and harmonic note heads",
353 "fingeringOrientations "
354 "stringFingerOrientations "
355 "stringNumberOrientations "