2 pitched-trill-engraver.cc -- implement Pitched_trill_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "axis-group-interface.hh"
15 #include "note-head.hh"
17 #include "pointer-group-interface.hh"
18 #include "side-position-interface.hh"
19 #include "stream-event.hh"
22 class Pitched_trill_engraver : public Engraver
25 TRANSLATOR_DECLARATIONS (Pitched_trill_engraver);
28 DECLARE_ACKNOWLEDGER (note_head);
29 DECLARE_ACKNOWLEDGER (dots);
30 DECLARE_ACKNOWLEDGER (trill_spanner);
31 void stop_translation_timestep ();
36 Item *trill_accidental_;
40 void make_trill (Stream_event *);
43 Pitched_trill_engraver::Pitched_trill_engraver ()
47 trill_accidental_ = 0;
51 Pitched_trill_engraver::acknowledge_dots (Grob_info info)
53 heads_.push_back (info.grob ());
56 Pitched_trill_engraver::acknowledge_note_head (Grob_info info)
58 heads_.push_back (info.grob ());
62 Pitched_trill_engraver::acknowledge_trill_spanner (Grob_info info)
64 Stream_event *ev = info.event_cause ();
66 && ev->in_event_class ("trill-span-event")
67 && to_dir (ev->get_property ("span-direction")) == START
68 && unsmob_pitch (ev->get_property ("pitch")))
73 Pitched_trill_engraver::make_trill (Stream_event *ev)
75 SCM scm_pitch = ev->get_property ("pitch");
76 Pitch *p = unsmob_pitch (scm_pitch);
78 SCM keysig = get_property ("localKeySignature");
80 SCM key = scm_cons (scm_from_int (p->get_octave ()),
81 scm_from_int (p->get_notename ()));
83 SCM handle = scm_assoc (key, keysig);
85 = (handle == SCM_BOOL_F) || p->get_alteration () == Rational (0);
89 programming_error ("already have a trill head.");
93 trill_head_ = make_item ("TrillPitchHead", ev->self_scm ());
94 SCM c0scm = get_property ("middleCPosition");
96 int c0 = scm_is_number (c0scm) ? scm_to_int (c0scm) : 0;
98 trill_head_->set_property ("staff-position",
99 scm_from_int (unsmob_pitch (scm_pitch)->steps ()
102 trill_group_ = make_item ("TrillPitchGroup", ev->self_scm ());
103 trill_group_->set_parent (trill_head_, Y_AXIS);
105 Axis_group_interface::add_element (trill_group_, trill_head_);
109 trill_accidental_ = make_item ("TrillPitchAccidental", ev->self_scm ());
111 // fixme: naming -> alterations
112 trill_accidental_->set_property ("alteration", ly_rational2scm (p->get_alteration ()));
113 Side_position_interface::add_support (trill_accidental_, trill_head_);
115 trill_head_->set_object ("accidental-grob", trill_accidental_->self_scm ());
116 trill_accidental_->set_parent (trill_head_, Y_AXIS);
117 Axis_group_interface::add_element (trill_group_, trill_accidental_);
122 Pitched_trill_engraver::stop_translation_timestep ()
125 for (vsize i = 0; i < heads_.size (); i++)
126 Side_position_interface::add_support (trill_group_, heads_[i]);
131 trill_accidental_ = 0;
135 #include "translator.icc"
137 ADD_ACKNOWLEDGER (Pitched_trill_engraver, note_head);
138 ADD_ACKNOWLEDGER (Pitched_trill_engraver, dots);
139 ADD_ACKNOWLEDGER (Pitched_trill_engraver, trill_spanner);
141 ADD_TRANSLATOR (Pitched_trill_engraver,
143 "Print the bracketed note head after a note head with trill.",
147 "TrillPitchAccidental "