2 tie-performer.cc -- implement Tie_performer
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "performer.hh"
11 #include "audio-item.hh"
13 #include "stream-event.hh"
14 #include "translator.icc"
16 class Tie_performer : public Performer
19 vector<Audio_element_info> now_heads_;
20 vector<Audio_element_info> now_tied_heads_;
21 vector<Audio_element_info> heads_to_tie_;
26 void stop_translation_timestep ();
27 void start_translation_timestep ();
28 virtual void acknowledge_audio_element (Audio_element_info);
29 void process_music ();
30 DECLARE_TRANSLATOR_LISTENER (tie);
32 TRANSLATOR_DECLARATIONS (Tie_performer);
35 Tie_performer::Tie_performer ()
38 ties_created_ = false;
41 IMPLEMENT_TRANSLATOR_LISTENER (Tie_performer, tie);
43 Tie_performer::listen_tie (Stream_event *ev)
49 Tie_performer::process_music ()
52 context ()->set_property ("tieMelismaBusy", SCM_BOOL_T);
56 Tie_performer::acknowledge_audio_element (Audio_element_info inf)
58 if (Audio_note *an = dynamic_cast<Audio_note *> (inf.elem_))
61 now_tied_heads_.push_back (inf);
63 now_heads_.push_back (inf);
65 // Find a previous note that ties to the current note. If it exists,
66 // remove it from the heads_to_tie vector and create the tie
67 vector<Audio_element_info>::iterator it;
69 Stream_event *right_mus = inf.event_;
70 for ( it = heads_to_tie_.begin() ; (!found) && (it < heads_to_tie_.end()); it++ )
72 Audio_element_info et = *it;
73 Audio_note *th = dynamic_cast<Audio_note *> (et.elem_);
74 Stream_event *left_mus = et.event_;
76 if (th && right_mus && left_mus
77 && ly_is_equal (right_mus->get_property ("pitch"),
78 left_mus->get_property ("pitch")))
83 // this invalidates the iterator, we are leaving the loop anyway
84 heads_to_tie_.erase (it);
91 Tie_performer::start_translation_timestep ()
93 context ()->set_property ("tieMelismaBusy",
94 ly_bool2scm (heads_to_tie_.size ()));
98 Tie_performer::stop_translation_timestep ()
100 // We might have dangling open ties like c~ d. Close them, unless we have
101 // tieWaitForNote set...
102 if (!to_boolean (get_property ("tieWaitForNote")))
104 heads_to_tie_.clear ();
105 ties_created_ = false;
110 heads_to_tie_ = now_heads_;
113 for (vsize i = now_tied_heads_.size (); i--;)
114 heads_to_tie_.push_back (now_tied_heads_[i]);
118 now_tied_heads_.clear ();
121 ADD_TRANSLATOR (Tie_performer,
123 "Generate ties between note heads of equal pitch.",