2 new-tie-engraver.cc -- implement Tie_performer
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
11 #include "audio-item.hh"
14 #include "performer.hh"
16 class Tie_performer : public Performer
20 Array<Audio_element_info> now_heads_;
21 Array<Audio_element_info> heads_to_tie_;
26 virtual void stop_translation_timestep ();
27 virtual void start_translation_timestep ();
28 virtual void acknowledge_audio_element (Audio_element_info);
29 virtual bool try_music (Music*);
30 virtual void process_music ();
32 TRANSLATOR_DECLARATIONS (Tie_performer);
35 Tie_performer::Tie_performer ()
39 ties_created_ = false;
43 Tie_performer::try_music (Music *mus)
45 if (mus->is_mus_type ("tie-event"))
54 Tie_performer::process_music ()
57 context ()->set_property ("tieMelismaBusy", SCM_BOOL_T);
61 Tie_performer::acknowledge_audio_element (Audio_element_info inf)
63 if (Audio_note * an = dynamic_cast<Audio_note *> (inf.elem_))
65 now_heads_.push (inf);
66 for (int i = heads_to_tie_.size (); i--;)
68 Music * right_mus = inf.event_;
70 Audio_note *th = dynamic_cast<Audio_note*> (heads_to_tie_[i].elem_);
71 Music * left_mus = heads_to_tie_[i].event_;
73 if (right_mus && left_mus
74 && ly_c_equal_p (right_mus->get_property ("pitch"),
75 left_mus->get_property ("pitch")))
85 Tie_performer::start_translation_timestep ()
87 context ()->set_property ("tieMelismaBusy",
88 ly_bool2scm (heads_to_tie_.size ()));
93 Tie_performer::stop_translation_timestep ()
97 heads_to_tie_.clear ();
99 ties_created_ = false;
104 heads_to_tie_ = now_heads_;
105 last_event_ = event_;
111 ENTER_DESCRIPTION (Tie_performer,
112 /* descr */ "Generate ties between noteheads of equal pitch.",
114 /* accepts */ "tie-event",
116 /* reads */ "tieMelismaBusy",