2 plet-engraver.cc -- implement Tuplet_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
11 #include "command-request.hh"
12 #include "tuplet-spanner.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 VIRTUAL_COPY_CONS (Translator);
26 Link_array<Time_scaled_music> time_scaled_music_arr_;
27 /// when does the scaled music stop? Array order is synced with time_scaled_music_arr_
28 Array<Moment> stop_moments_;
29 /// when does the current spanner stop? Array order is synced with time_scaled_music_arr_
30 Array<Moment> span_stop_moments_;
32 /// The spanners. Array order is synced with time_scaled_music_arr_
33 Link_array<Spanner> started_span_p_arr_;
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 create_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_music_arr_.push (c);
51 Moment m = now_mom () + c->length_mom ();
52 stop_moments_.push (m);
54 SCM s = get_property ("tupletSpannerDuration");
55 if (unsmob_moment (s))
56 m = m <? (now_mom () + *unsmob_moment (s));
58 span_stop_moments_.push (m);
66 Tuplet_engraver::create_grobs ()
68 SCM v = get_property ("tupletInvisible");
72 for (int i= 0; i < time_scaled_music_arr_.size (); i++)
74 if (i < started_span_p_arr_.size () && started_span_p_arr_[i])
77 Spanner* glep = new Spanner (get_property ("TupletBracket"));
78 Tuplet_bracket::set_interface (glep);
79 if (i >= started_span_p_arr_.size ())
80 started_span_p_arr_.push (glep);
82 started_span_p_arr_[i] = glep;
85 SCM proc = get_property ("tupletNumberFormatFunction");
86 if (gh_procedure_p (proc))
88 SCM t = gh_apply (proc, gh_list (time_scaled_music_arr_[i]->self_scm (), SCM_UNDEFINED));
89 glep->set_grob_property ("text", t);
92 announce_grob (glep, time_scaled_music_arr_ [i]);
97 Tuplet_engraver::acknowledge_grob (Grob_info i)
99 bool grace= to_boolean (i.elem_l_->get_grob_property ("grace"));
100 SCM wg = get_property ("weAreGraceContext");
101 bool wgb = to_boolean (wg);
105 if (Note_column::has_interface (i.elem_l_))
107 for (int j =0; j <started_span_p_arr_.size (); j++)
108 if (started_span_p_arr_[j])
109 Tuplet_bracket::add_column (started_span_p_arr_[j], dynamic_cast<Item*> (i.elem_l_));
111 else if (Beam::has_interface (i.elem_l_))
116 ugh, superfluous. Should look at
118 tuplet -> note-column -> stem -> beam
120 to find the beam(s) of a tuplet
123 for (int j = 0; j < started_span_p_arr_.size (); j++)
124 if (started_span_p_arr_[j])
125 Tuplet_bracket::add_beam (started_span_p_arr_[j],i.elem_l_);
130 Tuplet_engraver::start_translation_timestep ()
132 Moment now = now_mom ();
135 SCM s = get_property ("tupletSpannerDuration");
136 if (unsmob_moment (s))
137 tsd = *unsmob_moment (s);
139 for (int i= started_span_p_arr_.size (); i--;)
141 if (now >= span_stop_moments_[i])
143 if (started_span_p_arr_[i])
145 typeset_grob (started_span_p_arr_[i]);
146 started_span_p_arr_[i] =0;
150 span_stop_moments_[i] += tsd;
153 if (now >= stop_moments_[i])
155 started_span_p_arr_.del (i);
156 stop_moments_.del (i);
157 span_stop_moments_.del (i);
158 time_scaled_music_arr_.del (i);
164 Tuplet_engraver::finalize ()
166 for (int i=0; i < started_span_p_arr_.size (); i++)
168 if (started_span_p_arr_[i])
169 typeset_grob (started_span_p_arr_[i]);
173 ADD_THIS_TRANSLATOR (Tuplet_engraver);