2 figured-bass-engraver.cc -- implement Figured_bass_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
10 #include "engraver.hh"
16 #include "axis-group-interface.hh"
17 #include "align-interface.hh"
18 #include "pointer-group-interface.hh"
19 #include "text-interface.hh"
20 #include "grob-array.hh"
23 #include "translator.icc"
28 Spanner *continuation_line_;
34 Music *current_music_;
35 bool force_no_continuation_;
40 force_no_continuation_ = false;
41 continuation_line_ = 0;
43 alteration_ = SCM_EOL;
47 bool is_continuation () const
51 && !force_no_continuation_
52 && ly_is_equal (number_,
53 current_music_->get_property ("figure"))
54 && ly_is_equal (alteration_,
55 current_music_->get_property ("alteration"));
59 struct Figured_bass_engraver : public Engraver
61 TRANSLATOR_DECLARATIONS(Figured_bass_engraver);
62 void clear_spanners();
66 void center_continuations (Link_array<Spanner> const &consecutive_lines);
67 void center_repeated_continuations ();
69 Array<Figure_group> groups_;
71 Link_array<Music> new_musics_;
73 bool new_music_found_;
78 virtual bool try_music (Music *);
79 virtual void derived_mark () const;
81 void start_translation_timestep ();
82 void stop_translation_timestep ();
83 void process_music ();
87 Figured_bass_engraver::derived_mark () const
89 for (int i = 0; i < groups_.size (); i++)
91 scm_gc_mark (groups_[i].number_);
92 scm_gc_mark (groups_[i].alteration_);
97 Figured_bass_engraver::stop_translation_timestep ()
99 if (groups_.is_empty ()
100 || now_mom ().main_part_ < stop_moment_.main_part_)
104 for (int i = 0; !found && i < groups_.size (); i++)
105 found = found || groups_[i].current_music_;
111 Figured_bass_engraver::Figured_bass_engraver ()
114 continuation_ = false;
116 new_music_found_ = false;
120 Figured_bass_engraver::start_translation_timestep ()
122 if (now_mom ().main_part_ < stop_moment_.main_part_)
126 new_musics_.clear ();
127 for (int i = 0; i < groups_.size (); i++)
129 groups_[i].current_music_ = 0;
131 continuation_ = false;
135 Figured_bass_engraver::try_music (Music *m)
137 new_music_found_ = true;
138 if (m->is_mus_type ("rest-event"))
145 stop_moment_ = now_mom () + m->get_length ();
147 SCM fig = m->get_property ("figure");
148 for (int i = 0; i < groups_.size (); i++)
150 if (!groups_[i].current_music_
151 && ly_is_equal (groups_[i].number_, fig))
153 groups_[i].current_music_ = m;
154 groups_[i].force_no_continuation_
155 = to_boolean (m->get_property ("no-continuation"));
156 continuation_ = true;
161 new_musics_.push (m);
168 Figured_bass_engraver::center_continuations (Link_array<Spanner> const &consecutive_lines)
170 if (consecutive_lines.size () == 2)
172 Link_array<Grob> left_figs;
173 for (int j = consecutive_lines.size(); j--;)
174 left_figs.push (consecutive_lines[j]->get_bound (LEFT));
176 SCM ga = Grob_array::make_array ();
177 unsmob_grob_array (ga)->set_array (left_figs);
179 for (int j = consecutive_lines.size(); j--;)
180 consecutive_lines[j]->set_object ("figures",
181 unsmob_grob_array (ga)->smobbed_copy ());
186 Figured_bass_engraver::center_repeated_continuations ()
188 Link_array<Spanner> consecutive_lines;
189 for (int i = 0; i <= groups_.size(); i++)
191 if (i < groups_.size ()
192 && groups_[i].continuation_line_
193 && (consecutive_lines.is_empty ()
194 || (consecutive_lines[0]->get_bound(LEFT)->get_column ()
195 == groups_[i].continuation_line_->get_bound (LEFT)->get_column ()
196 && consecutive_lines[0]->get_bound(RIGHT)->get_column ()
197 == groups_[i].continuation_line_->get_bound (RIGHT)->get_column ())))
199 consecutive_lines.push (groups_[i].continuation_line_);
203 center_continuations (consecutive_lines);
204 consecutive_lines.clear ();
210 Figured_bass_engraver::clear_spanners ()
216 if (to_boolean (get_property ("figuredBassCenterContinuations")))
217 center_repeated_continuations();
223 Figured_bass_engraver::add_brackets ()
225 Link_array<Grob> encompass;
227 for (int i = 0; i < groups_.size (); i ++)
229 if (!groups_[i].current_music_)
232 if (to_boolean (groups_[i].current_music_->get_property ("bracket-start")))
237 if (inside && groups_[i].figure_item_)
238 encompass.push (groups_[i].figure_item_);
240 if (to_boolean (groups_[i].current_music_->get_property ("bracket-stop")))
244 Item * brack = make_item ("BassFigureBracket", groups_[i].current_music_->self_scm ());
245 for (int j = 0; j < encompass.size (); j++)
247 Pointer_group_interface::add_grob (brack,
248 ly_symbol2scm ("elements"),
257 Figured_bass_engraver::process_music ()
266 && new_musics_.is_empty ())
272 if (!new_music_found_)
275 new_music_found_ = false;
278 Don't need to sync alignments, if we're not using extenders.
280 bool use_extenders = to_boolean (get_property ("useBassFigureExtenders"));
283 if (to_boolean (get_property ("figuredBassCenterContinuations")))
284 center_repeated_continuations ();
286 for (int i = 0; i < groups_.size (); i++)
288 groups_[i].group_ = 0;
289 groups_[i].continuation_line_ = 0;
299 for (int i = 0; i < new_musics_.size (); i++)
301 while (k < groups_.size() &&
302 groups_[k].current_music_)
305 if (k >= groups_.size ())
308 groups_.push (group);
311 groups_[k].current_music_ = new_musics_[i];
312 groups_[k].figure_item_ = 0;
316 for (int i = 0; i < groups_.size (); i++)
318 if (!groups_[i].is_continuation ())
320 groups_[i].number_ = SCM_BOOL_F;
321 groups_[i].alteration_ = SCM_BOOL_F;
327 Array<int> junk_continuations;
328 for (int i = 0; i < groups_.size(); i++)
330 Figure_group &group = groups_[i];
332 if (group.is_continuation ())
334 if (!group.continuation_line_)
336 Spanner * line = make_spanner ("BassFigureContinuation", SCM_EOL);
337 Item * item = group.figure_item_;
338 group.continuation_line_ = line;
339 line->set_bound (LEFT, item);
342 Don't add as child. This will cache the wrong
343 (pre-break) stencil when callbacks are triggered.
345 line->set_parent (group.group_, Y_AXIS);
346 Pointer_group_interface::add_grob (line, ly_symbol2scm ("figures"), item);
348 group.figure_item_ = 0;
351 else if (group.continuation_line_)
352 junk_continuations.push (i);
358 Link_array<Spanner> consecutive;
359 for (int i = 0; i <= junk_continuations.size (); i++)
361 if (i < junk_continuations.size()
362 && (i == 0 || junk_continuations[i-1] == junk_continuations[i] - 1))
363 consecutive.push (groups_[junk_continuations[i]].continuation_line_);
366 center_continuations (consecutive);
367 consecutive.clear ();
368 if (i < junk_continuations.size ())
369 consecutive.push (groups_[junk_continuations[i]].continuation_line_);
372 for (int i = 0; i < junk_continuations.size (); i++)
373 groups_[junk_continuations[i]].continuation_line_ = 0;
381 Figured_bass_engraver::create_grobs ()
383 Grob *muscol = dynamic_cast<Item*> (unsmob_grob (get_property ("currentMusicalColumn")));
386 alignment_ = make_spanner ("BassFigureAlignment", SCM_EOL);
387 alignment_->set_bound (LEFT, muscol);
389 alignment_->set_bound (RIGHT, muscol);
391 SCM proc = get_property ("figuredBassFormatter");
392 for (int i = 0; i < groups_.size(); i++)
394 Figure_group &group = groups_[i];
396 if (group.current_music_)
399 = make_item ("BassFigure",
400 group.current_music_->self_scm ());
403 SCM fig = group.current_music_->get_property ("figure");
406 group.group_ = make_spanner ("BassFigureLine", SCM_EOL);
407 group.group_->set_bound (LEFT, muscol);
408 Align_interface::add_element (alignment_,
412 if (scm_memq (fig, get_property ("implicitBassFigures")) != SCM_BOOL_F)
414 item->set_property ("transparent", SCM_BOOL_T);
415 item->set_property ("implicit", SCM_BOOL_T);
419 group.alteration_ = group.current_music_->get_property ("alteration");
421 SCM text = group.current_music_->get_property ("text");
422 if (!Text_interface::is_markup (text)
423 && ly_is_procedure (proc))
425 text = scm_call_3 (proc, fig, group.current_music_->self_scm (),
426 context ()->self_scm ());
429 item->set_property ("text", text);
431 Axis_group_interface::add_element (group.group_, item);
432 group.figure_item_ = item;
435 if (group.continuation_line_)
438 UGH should connect to the bass staff, and get the note heads.
440 group.figure_item_->set_property ("transparent", SCM_BOOL_T);
441 group.continuation_line_->set_bound (RIGHT, group.figure_item_);
445 if (groups_[i].group_)
446 groups_[i].group_->set_bound (RIGHT, muscol);
451 ADD_TRANSLATOR (Figured_bass_engraver,
454 "Make figured bass numbers.",
457 "BassFigureAlignment "
459 "BassFigureContinuation "
463 "bass-figure-event rest-event",
466 "figuredBassCenterContinuations "
467 "implicitBassFigures "
468 "figuredBassFormatter "
469 "figuredBassAlterationDirection "
470 "useBassFigureExtenders",