2 recording-group-engraver.cc -- implement Recording_group_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2003--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "recording-group-engraver.hh"
16 TODO: Junk this class, extract events directly instead.
19 Recording_group_engraver::derived_mark () const
21 Engraver_group::derived_mark ();
22 scm_gc_mark (now_events_);
23 scm_gc_mark (accumulator_);
26 Recording_group_engraver::Recording_group_engraver ()
28 accumulator_ = SCM_EOL;
29 now_events_ = SCM_EOL;
33 Recording_group_engraver::add_music (SCM music, SCM success)
35 now_events_ = scm_cons (scm_cons (music, success), now_events_);
39 Recording_group_engraver::stop_translation_timestep ()
41 accumulator_ = scm_acons (scm_cons (context ()->now_mom ().smobbed_copy (),
42 context ()->get_property ("instrumentTransposition")),
45 now_events_ = SCM_EOL;
49 Recording_group_engraver::finalize ()
51 SCM proc = context ()->get_property ("recordEventSequence");
53 if (ly_is_procedure (proc))
54 scm_call_2 (proc, context ()->self_scm (), scm_cdr (accumulator_));
58 Recording_group_engraver::try_music (Music *m)
60 bool retval = true;//Translator_group::try_music (m);
62 add_music (m->self_scm (), ly_bool2scm (retval));
67 recording_engraver (Translator_group *tg)
69 Recording_group_engraver *rg = dynamic_cast<Recording_group_engraver *> (tg);
70 rg->stop_translation_timestep ();
74 Recording_group_engraver::fetch_precomputable_methods (Translator_group_void_method ptrs[])
76 Translator_group::fetch_precomputable_methods (ptrs);
77 ptrs[STOP_TRANSLATION_TIMESTEP] = &recording_engraver;
80 ADD_TRANSLATOR_GROUP (Recording_group_engraver,
81 "Engraver_group that records all music events "
82 "for this context. Calls the procedure "
83 "in @code{recordEventSequence} when finished.",
86 "recordEventSequence",