2 tuplet-engraver.cc -- implement Tuplet_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "tuplet-bracket.hh"
10 #include "note-column.hh"
12 #include "engraver.hh"
15 #include "translator.icc"
17 struct Tuplet_description
31 static int compare (Tuplet_description const &a, Tuplet_description const &b)
33 return ::compare (a.length_, b.length_);
37 class Tuplet_engraver : public Engraver
40 TRANSLATOR_DECLARATIONS (Tuplet_engraver);
43 std::vector<Tuplet_description> tuplets_;
44 Link_array<Spanner> last_tuplets_;
45 DECLARE_ACKNOWLEDGER (note_column);
46 virtual bool try_music (Music *r);
47 virtual void finalize ();
48 void start_translation_timestep ();
49 void process_music ();
53 Tuplet_engraver::try_music (Music *music)
55 if (music->is_mus_type ("time-scaled-music"))
57 Music *el = unsmob_music (music->get_property ("element"));
58 if (el && !el->is_mus_type ("event-chord"))
62 d.length_ = music->get_length ().main_part_;
63 d.stop_ = now_mom ().main_part_ + d.length_;
64 d.span_stop_ = d.stop_;
66 SCM s = get_property ("tupletSpannerDuration");
67 if (unsmob_moment (s))
68 d.span_stop_ = min (d.span_stop_, (now_mom () + *unsmob_moment (s)).main_part_);
70 tuplets_.push_back (d);
78 Tuplet_engraver::process_music ()
80 if (!tuplets_.size ())
83 tuplets_.sort (&Tuplet_description::compare);
84 for (vsize i = 0; i < tuplets_.size (); i++)
86 if (tuplets_[i].bracket_)
89 tuplets_[i].bracket_ = make_spanner ("TupletBracket",
90 tuplets_[i].music_->self_scm ());
91 tuplets_[i].number_ = make_spanner ("TupletNumber",
92 tuplets_[i].music_->self_scm ());
93 tuplets_[i].number_->set_object ("bracket", tuplets_[i].bracket_->self_scm ());
94 tuplets_[i].bracket_->set_object ("tuplet-number", tuplets_[i].number_->self_scm ());
96 if (i > 0 && tuplets_[i - 1].bracket_)
97 Tuplet_bracket::add_tuplet_bracket (tuplets_[i].bracket_, tuplets_[i - 1].bracket_);
99 if (i < tuplets_.size () - 1 && tuplets_[i + 1].bracket_)
100 Tuplet_bracket::add_tuplet_bracket (tuplets_[i + 1].bracket_, tuplets_[i].bracket_);
102 SCM proc = get_property ("tupletNumberFormatFunction");
103 if (ly_is_procedure (proc))
105 SCM t = scm_apply_0 (proc, scm_list_1 (tuplets_[i].music_->self_scm ()));
106 tuplets_[i].number_->set_property ("text", t);
112 Tuplet_engraver::acknowledge_note_column (Grob_info inf)
114 for (vsize j = 0; j < tuplets_.size (); j++)
115 if (tuplets_[j].bracket_)
117 Item *i = dynamic_cast<Item *> (inf.grob ());
118 Tuplet_bracket::add_column (tuplets_[j].bracket_, i);
119 add_bound_item (tuplets_[j].number_, i);
124 Tuplet_engraver::start_translation_timestep ()
126 Moment now = now_mom ();
128 last_tuplets_.clear ();
129 if (tuplets_.empty ())
132 Moment tsdmom = robust_scm2moment (get_property ("tupletSpannerDuration"), Moment (0));
133 bool full_length = to_boolean (get_property ("tupletFullLength"));
135 for (vsize i = tuplets_.size (); i--;)
137 Rational tsd = tsdmom.main_part_;
139 if (now.main_part_ >= tuplets_[i].span_stop_)
141 if (tuplets_[i].bracket_)
145 Item *col = unsmob_item (get_property ("currentMusicalColumn"));
147 tuplets_[i].bracket_->set_bound (RIGHT, col);
148 tuplets_[i].number_->set_bound (RIGHT, col);
150 else if (!tuplets_[i].bracket_->get_bound (RIGHT))
152 tuplets_[i].bracket_->set_bound (RIGHT,
153 tuplets_[i].bracket_->get_bound (LEFT));
154 tuplets_[i].number_->set_bound (RIGHT,
155 tuplets_[i].bracket_->get_bound (LEFT));
157 last_tuplets_.push_back (tuplets_[i].bracket_);
158 last_tuplets_.push_back (tuplets_[i].number_);
160 tuplets_[i].bracket_ = 0;
161 tuplets_[i].number_ = 0;
165 tuplets_[i].span_stop_ += tsd;
168 if (now.main_part_ >= tuplets_[i].stop_)
169 tuplets_.erase (tuplets_.begin () + i);
174 Tuplet_engraver::finalize ()
176 if (to_boolean (get_property ("tupletFullLength")))
178 for (vsize i = 0; i < last_tuplets_.size (); i++)
180 Item *col = unsmob_item (get_property ("currentCommandColumn"));
181 last_tuplets_[i]->set_bound (RIGHT, col);
186 Tuplet_engraver::Tuplet_engraver ()
190 ADD_ACKNOWLEDGER (Tuplet_engraver, note_column);
191 ADD_TRANSLATOR (Tuplet_engraver,
192 /* doc */ "Catch Time_scaled_music and generate appropriate bracket ",
193 /* create */ "TupletBracket TupletNumber",
194 /* accept */ "time-scaled-music",
195 /* read */ "tupletNumberFormatFunction tupletSpannerDuration tupletFullLength",