2 global-context.cc -- implement Global_context
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "global-context.hh"
14 #include "context-def.hh"
15 #include "international.hh"
16 #include "lilypond-key.hh"
17 #include "music-iterator.hh"
19 #include "output-def.hh"
20 #include "score-context.hh"
23 Global_context::Global_context (Output_def *o, Moment final, Object_key *key)
24 : Context (new Lilypond_context_key (key,
30 definition_ = find_context_def (o, ly_symbol2scm ("Global"));
34 Context_def *globaldef = unsmob_context_def (definition_);
36 programming_error ("no `Global' context found");
38 globaldef->apply_default_property_operations (this);
39 accepts_list_ = scm_list_1 (ly_symbol2scm ("Score"));
43 Global_context::get_output_def () const
49 Global_context::add_moment_to_process (Moment m)
55 programming_error ("trying to freeze in time");
57 for (vsize i = 0; i < extra_mom_pq_.size (); i++)
58 if (extra_mom_pq_[i] == m)
60 extra_mom_pq_.insert (m);
64 Global_context::sneaky_insert_extra_moment (Moment w)
66 while (extra_mom_pq_.size () && extra_mom_pq_.front () <= w)
67 w = extra_mom_pq_.get ();
72 Global_context::get_moments_left () const
74 return extra_mom_pq_.size ();
78 Global_context::prepare (Moment m)
83 clear_key_disambiguations ();
84 if (get_score_context ())
85 get_score_context ()->prepare (m);
89 Global_context::now_mom () const
95 Global_context::get_score_context () const
97 return (scm_is_pair (context_list_))
98 ? dynamic_cast<Score_context *> (unsmob_context (scm_car (context_list_)))
103 Global_context::get_output ()
105 return get_score_context ()->get_output ();
109 Global_context::one_time_step ()
111 get_score_context ()->one_time_step ();
112 apply_finalizations ();
117 Global_context::finish ()
119 if (get_score_context ())
120 get_score_context ()->finish ();
124 Global_context::run_iterator_on_me (Music_iterator *iter)
127 prev_mom_ = now_mom_ = iter->pending_moment ();
130 while (iter->ok () || get_moments_left ())
135 w = iter->pending_moment ();
137 w = sneaky_insert_extra_moment (w);
138 if (w.main_part_.is_infinity ())
144 Need this to get grace notes at start of a piece correct.
147 set_property ("measurePosition", w.smobbed_copy ());
155 if (!get_score_context ())
157 SCM sym = ly_symbol2scm ("Score");
158 Context_def *t = unsmob_context_def (find_context_def (get_output_def (),
161 error (_f ("can't find `%s' context", "Score"));
163 Object_key const *key = get_context_key ("Score", "");
164 Context *c = t->instantiate (SCM_EOL, key);
167 Score_context *sc = dynamic_cast<Score_context *> (c);
176 Global_context::apply_finalizations ()
178 SCM lst = get_property ("finalizations");
179 set_property ("finalizations", SCM_EOL);
180 for (SCM s = lst; scm_is_pair (s); s = scm_cdr (s))
182 /* TODO: make safe. */
183 scm_primitive_eval (scm_car (s));
186 /* Add a function to execute before stepping to the next time step. */
188 Global_context::add_finalization (SCM x)
190 SCM lst = get_property ("finalizations");
191 lst = scm_cons (x, lst);
192 set_property ("finalizations", lst);
196 Global_context::previous_moment () const
202 Global_context::get_default_interpreter ()
204 if (get_score_context ())
205 return get_score_context ()->get_default_interpreter ();
207 return Context::get_default_interpreter ();
211 Global_context::new_unique ()
213 return ++unique_count_;