2 plet-engraver.cc -- implement Tuplet_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
11 #include "command-request.hh"
12 #include "tuplet-bracket.hh"
13 #include "note-column.hh"
14 #include "time-scaled-music.hh"
16 #include "music-list.hh"
17 #include "engraver.hh"
20 class Tuplet_engraver : public Engraver
23 TRANSLATOR_DECLARATIONS(Tuplet_engraver);
26 Link_array<Time_scaled_music> time_scaled_musics_;
27 /// when does the scaled music stop? Array order is synced with time_scaled_musics_
28 Array<Rational> stop_moments_;
29 /// when does the current spanner stop? Array order is synced with time_scaled_musics_
30 Array<Rational> span_stop_moments_;
32 /// The spanners. Array order is synced with time_scaled_musics_
33 Link_array<Spanner> started_spanners_;
35 virtual void finalize ();
36 virtual void acknowledge_grob (Grob_info);
37 virtual bool try_music (Music*r);
38 virtual void start_translation_timestep ();
39 virtual void process_acknowledged_grobs ();
43 Tuplet_engraver::try_music (Music *r)
45 if (Time_scaled_music * c = dynamic_cast<Time_scaled_music *> (r))
47 Music *el = c->element ();
48 if (!dynamic_cast<Request_chord*> (el))
50 time_scaled_musics_.push (c);
51 Rational m = now_mom ().main_part_ + c->length_mom ().main_part_;
52 stop_moments_.push (m);
54 SCM s = get_property ("tupletSpannerDuration");
55 if (unsmob_moment (s))
56 m = m <? (now_mom () + *unsmob_moment (s)).main_part_;
58 span_stop_moments_.push (m);
66 Tuplet_engraver::process_acknowledged_grobs ()
68 SCM v = get_property ("tupletInvisible");
72 for (int i= 0; i < time_scaled_musics_.size (); i++)
74 if (i < started_spanners_.size () && started_spanners_[i])
77 Spanner* glep = new Spanner (get_property ("TupletBracket"));
79 if (i >= started_spanners_.size ())
80 started_spanners_.push (glep);
82 started_spanners_[i] = glep;
85 SCM proc = get_property ("tupletNumberFormatFunction");
86 if (gh_procedure_p (proc))
88 SCM t = gh_apply (proc, scm_list_n (time_scaled_musics_[i]->self_scm (), SCM_UNDEFINED));
89 glep->set_grob_property ("text", t);
92 announce_grob(glep, time_scaled_musics_ [i]->self_scm());
97 Tuplet_engraver::acknowledge_grob (Grob_info i)
99 if (Note_column::has_interface (i.grob_))
101 for (int j =0; j <started_spanners_.size (); j++)
102 if (started_spanners_[j])
103 Tuplet_bracket::add_column (started_spanners_[j], dynamic_cast<Item*> (i.grob_));
108 Tuplet_engraver::start_translation_timestep ()
110 Moment now = now_mom ();
113 SCM s = get_property ("tupletSpannerDuration");
114 if (unsmob_moment (s))
115 tsd = unsmob_moment (s)->main_part_;
117 for (int i= started_spanners_.size (); i--;)
119 if (now.main_part_ >= span_stop_moments_[i])
121 if (started_spanners_[i])
123 typeset_grob (started_spanners_[i]);
124 started_spanners_[i] =0;
128 span_stop_moments_[i] += tsd.main_part_;
131 if (now.main_part_ >= stop_moments_[i])
133 started_spanners_.del (i);
134 stop_moments_.del (i);
135 span_stop_moments_.del (i);
136 time_scaled_musics_.del (i);
142 Tuplet_engraver::finalize ()
144 for (int i=0; i < started_spanners_.size (); i++)
146 if (started_spanners_[i])
147 typeset_grob (started_spanners_[i]);
153 Tuplet_engraver::Tuplet_engraver(){}
155 ENTER_DESCRIPTION(Tuplet_engraver,
156 /* descr */ "Catch Time_scaled_music and generate appropriate bracket ",
157 /* creats*/ "TupletBracket",
158 /* acks */ "note-column-interface",
159 /* reads */ "tupletNumberFormatFunction tupletSpannerDuration tupletInvisible",