2 plet-engraver.cc -- implement Tuplet_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2000 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 do_removal_processing ();
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");
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_spanner::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;
84 glep->set_grob_property ("text",
85 ly_str02scm (to_str (time_scaled_music_arr_[i]->den_i_).ch_C()));
87 announce_grob (glep, time_scaled_music_arr_ [i]);
92 Tuplet_engraver::acknowledge_grob (Grob_info i)
94 bool grace= to_boolean (i.elem_l_->get_grob_property ("grace"));
95 SCM wg = get_property ("weAreGraceContext");
96 bool wgb = to_boolean (wg);
100 if (Note_column::has_interface(i.elem_l_))
102 for (int j =0; j <started_span_p_arr_.size (); j++)
103 if (started_span_p_arr_[j])
104 Tuplet_spanner::add_column (started_span_p_arr_[j], dynamic_cast<Item*>(i.elem_l_));
106 else if (Beam::has_interface (i.elem_l_))
108 for (int j = 0; j < started_span_p_arr_.size (); j++)
109 if (started_span_p_arr_[j])
110 Tuplet_spanner::add_beam (started_span_p_arr_[j],i.elem_l_);
115 Tuplet_engraver::start_translation_timestep ()
117 Moment now = now_mom ();
120 SCM s = get_property ("tupletSpannerDuration");
121 if (unsmob_moment (s))
122 tsd = *unsmob_moment (s);
124 for (int i= started_span_p_arr_.size (); i--; )
126 if (now >= span_stop_moments_[i])
128 if (started_span_p_arr_[i])
130 typeset_grob (started_span_p_arr_[i]);
131 started_span_p_arr_[i] =0;
135 span_stop_moments_[i] += tsd;
138 if (now >= stop_moments_[i])
140 started_span_p_arr_.del (i);
141 stop_moments_.del(i);
142 span_stop_moments_.del (i);
143 time_scaled_music_arr_.del(i);
149 Tuplet_engraver::do_removal_processing ()
151 for (int i=0; i < started_span_p_arr_.size (); i++)
153 if (started_span_p_arr_[i])
154 typeset_grob (started_span_p_arr_[i]);
158 ADD_THIS_TRANSLATOR(Tuplet_engraver);