2 phrasing-slur-engraver.cc -- implement Phrasing_slur_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
12 #include "directional-element-interface.hh"
13 #include "international.hh"
14 #include "note-column.hh"
17 #include "stream-event.hh"
20 #include "translator.icc"
23 It is possible that a slur starts and ends on the same note. At
24 least, it is for phrasing slurs: a note can be both beginning and
32 This is largely similar to Slur_engraver. Check if fixes apply there too.
34 (on principle, engravers don't use inheritance for code sharing)
37 class Phrasing_slur_engraver : public Engraver
39 Drul_array<Stream_event *> events_;
40 Stream_event *running_slur_start_;
42 vector<Grob*> end_slurs_;
45 void acknowledge_extra_object (Grob_info);
46 DECLARE_ACKNOWLEDGER (accidental);
47 DECLARE_ACKNOWLEDGER (fingering);
48 DECLARE_ACKNOWLEDGER (note_column);
49 DECLARE_ACKNOWLEDGER (slur);
50 DECLARE_ACKNOWLEDGER (text_script);
51 DECLARE_ACKNOWLEDGER (tie);
52 DECLARE_TRANSLATOR_LISTENER (phrasing_slur);
54 void stop_translation_timestep ();
55 virtual void finalize ();
56 void process_music ();
59 TRANSLATOR_DECLARATIONS (Phrasing_slur_engraver);
62 Phrasing_slur_engraver::Phrasing_slur_engraver ()
64 events_[START] = events_[STOP] = 0;
67 IMPLEMENT_TRANSLATOR_LISTENER (Phrasing_slur_engraver, phrasing_slur);
69 Phrasing_slur_engraver::listen_phrasing_slur (Stream_event *ev)
72 Let's not start more than one slur per moment.
74 Direction d = to_dir (ev->get_property ("span-direction"));
76 ASSIGN_EVENT_ONCE (events_[START], ev);
77 else if (d == STOP && !slurs_.empty ())
78 ASSIGN_EVENT_ONCE (events_[STOP], ev);
82 Phrasing_slur_engraver::acknowledge_note_column (Grob_info info)
84 Grob *e = info.grob ();
85 for (vsize i = slurs_.size (); i--;)
86 Slur::add_column (slurs_[i], e);
87 for (vsize i = end_slurs_.size (); i--;)
88 Slur::add_column (end_slurs_[i], e);
92 Phrasing_slur_engraver::acknowledge_extra_object (Grob_info info)
94 Slur::auxiliary_acknowledge_extra_object (info, slurs_, end_slurs_);
98 Phrasing_slur_engraver::acknowledge_accidental (Grob_info info)
100 acknowledge_extra_object (info);
104 Phrasing_slur_engraver::acknowledge_fingering (Grob_info info)
106 acknowledge_extra_object (info);
110 Phrasing_slur_engraver::acknowledge_text_script (Grob_info info)
112 acknowledge_extra_object (info);
116 Phrasing_slur_engraver::acknowledge_tie (Grob_info info)
118 acknowledge_extra_object (info);
122 Phrasing_slur_engraver::acknowledge_slur (Grob_info info)
124 acknowledge_extra_object (info);
128 Phrasing_slur_engraver::finalize ()
131 slurs_[0]->warning (_ ("unterminated phrasing slur"));
135 Phrasing_slur_engraver::process_music ()
143 if (events_[START] && slurs_.empty ())
145 Stream_event *ev = events_[START];
147 Grob *slur = make_spanner ("PhrasingSlur", events_[START]->self_scm ());
148 Direction updown = to_dir (ev->get_property ("direction"));
150 set_grob_direction (slur, updown);
152 slurs_.push_back (slur);
157 Phrasing_slur_engraver::stop_translation_timestep ()
160 events_[START] = events_[STOP] = 0;
163 ADD_ACKNOWLEDGER (Phrasing_slur_engraver, accidental);
164 ADD_ACKNOWLEDGER (Phrasing_slur_engraver, fingering)
165 ADD_ACKNOWLEDGER (Phrasing_slur_engraver, note_column);
166 ADD_ACKNOWLEDGER (Phrasing_slur_engraver, slur);
167 ADD_ACKNOWLEDGER (Phrasing_slur_engraver, text_script);
168 ADD_ACKNOWLEDGER (Phrasing_slur_engraver, tie);
170 ADD_TRANSLATOR (Phrasing_slur_engraver,
171 /* doc */ "Print phrasing slurs. Similar to @ref{Slur_engraver}",
172 /* create */ "PhrasingSlur",