2 new-chord-tremolo-engraver.cc -- implement Chord_tremolo_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>, Erik Sandberg <mandolaerik@gmail.com>
10 #include "score-engraver.hh"
12 #include "bar-line.hh"
13 #include "global-context.hh"
14 #include "international.hh"
17 #include "percent-repeat-iterator.hh"
18 #include "repeated-music.hh"
19 #include "side-position-interface.hh"
21 #include "stream-event.hh"
24 #include "translator.icc"
27 * TODO: Create separate Double_percent_repeat_engraver?
28 * Or, at least move double percent handling to Slash_repeat_engraver
31 class Percent_repeat_engraver : public Engraver
35 TRANSLATOR_DECLARATIONS (Percent_repeat_engraver);
38 Stream_event *percent_event_;
40 /// moment (global time) where percent started.
50 Repeat_sign_type repeat_sign_type_;
53 Spanner *percent_counter_;
56 virtual void finalize ();
57 DECLARE_TRANSLATOR_LISTENER (percent);
59 void stop_translation_timestep ();
60 void start_translation_timestep ();
61 void process_music ();
64 Percent_repeat_engraver::Percent_repeat_engraver ()
72 IMPLEMENT_TRANSLATOR_LISTENER (Percent_repeat_engraver, percent);
74 Percent_repeat_engraver::listen_percent (Stream_event *ev)
78 Moment body_length = get_event_length (ev);
79 Moment meas_len (robust_scm2moment (get_property ("measureLength"),
82 if (meas_len == body_length)
84 repeat_sign_type_ = MEASURE;
85 start_mom_ = now_mom ();
86 stop_mom_ = now_mom () + body_length;
87 get_global_context ()->add_moment_to_process (stop_mom_);
89 else if (Moment (2) * meas_len == body_length)
91 repeat_sign_type_ = DOUBLE_MEASURE;
92 start_mom_ = now_mom () + meas_len;
93 stop_mom_ = now_mom () + body_length; /* never used */
94 get_global_context ()->add_moment_to_process (start_mom_);
104 Percent_repeat_engraver::process_music ()
106 if (percent_event_ && now_mom ().main_part_ == start_mom_.main_part_)
108 if (repeat_sign_type_ == MEASURE)
112 percent_ = make_spanner ("PercentRepeat", percent_event_->self_scm ());
114 Grob *col = unsmob_grob (get_property ("currentCommandColumn"));
115 percent_->set_bound (LEFT, col);
117 SCM count = percent_event_->get_property ("repeat-count");
118 if (count != SCM_EOL && to_boolean (get_property ("countPercentRepeats")))
121 = make_spanner ("PercentRepeatCounter", percent_event_->self_scm ());
123 SCM text = scm_number_to_string (count, scm_from_int (10));
124 percent_counter_->set_property ("text", text);
125 percent_counter_->set_bound (LEFT, col);
126 Side_position_interface::add_support (percent_counter_,
128 percent_counter_->set_parent (percent_, Y_AXIS);
131 percent_counter_ = 0;
133 else if (repeat_sign_type_ == DOUBLE_MEASURE)
135 Item *double_percent = make_item ("DoublePercentRepeat", percent_event_->self_scm ());
137 SCM count = percent_event_->get_property ("repeat-count");
139 && to_boolean (get_property ("countPercentRepeats")))
141 Item *double_percent_counter = make_item ("DoublePercentRepeatCounter",
142 percent_event_->self_scm());
144 SCM text = scm_number_to_string (count,
146 double_percent_counter->set_property ("text", text);
148 Side_position_interface::add_support (double_percent_counter,
150 double_percent_counter->set_parent (double_percent, Y_AXIS);
151 double_percent_counter->set_parent (double_percent, X_AXIS);
154 /* forbid breaks on a % line. Should forbid all breaks, really. */
155 context ()->get_score_context ()->set_property ("forbidBreak", SCM_BOOL_T);
157 /* No more processing needed. */
158 repeat_sign_type_ = UNKNOWN;
164 Percent_repeat_engraver::finalize ()
168 percent_event_->origin ()->warning (_ ("unterminated percent repeat"));
169 percent_->suicide ();
170 percent_counter_->suicide();
175 Percent_repeat_engraver::typeset_perc ()
179 Grob *col = unsmob_grob (get_property ("currentCommandColumn"));
181 percent_->set_bound (RIGHT, col);
184 if (percent_counter_)
185 percent_counter_->set_bound (RIGHT, col);
186 percent_counter_ = 0;
191 Percent_repeat_engraver::start_translation_timestep ()
193 if (stop_mom_.main_part_ == now_mom ().main_part_)
198 repeat_sign_type_ = UNKNOWN;
203 Percent_repeat_engraver::stop_translation_timestep ()
207 ADD_TRANSLATOR (Percent_repeat_engraver,
209 "Make whole bar and double bar repeats.",
212 "DoublePercentRepeat "
213 "DoublePercentRepeatCounter "
215 "PercentRepeatCounter ",
221 "countPercentRepeats "
222 "currentCommandColumn "