2 phrasing-slur-engraver.cc -- implement Phrasing_slur_engraver
4 (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 #include "directional-element-interface.hh"
11 #include "note-column.hh"
16 It is possible that a slur starts and ends on the same note. At
17 least, it is for phrasing slurs: a note can be both beginning and
21 class Phrasing_slur_engraver : public Engraver
23 Drul_array<Music *> events_;
24 Music *running_slur_start_;
25 Link_array<Grob> slurs_;
26 Link_array<Grob> end_slurs_;
29 virtual bool try_music (Music *);
30 virtual void acknowledge_grob (Grob_info);
31 virtual void stop_translation_timestep ();
32 virtual void finalize ();
33 virtual void process_music ();
36 TRANSLATOR_DECLARATIONS (Phrasing_slur_engraver);
39 Phrasing_slur_engraver::Phrasing_slur_engraver ()
41 events_[START] = events_[STOP] = 0;
45 Phrasing_slur_engraver::try_music (Music *m)
47 if (m->is_mus_type ("phrasing-slur-event"))
50 Let's not start more than one slur per moment.
52 Direction d = to_dir (m->get_property ("span-direction"));
60 if (slurs_.is_empty ())
71 Phrasing_slur_engraver::acknowledge_grob (Grob_info info)
73 Grob *e = info.grob ();
74 if (Note_column::has_interface (info.grob ()))
76 for (int i = slurs_.size (); i--;)
77 Slur::add_column (slurs_[i], e);
78 for (int i = end_slurs_.size (); i--;)
79 Slur::add_column (end_slurs_[i], e);
84 ugh. cut & paste from slur-engraver.cc
86 SCM inside = e->get_property ("inside-slur");
87 if (Tie::has_interface (e)
88 || Slur::has_interface (e)
89 || to_boolean (inside))
91 for (int i = slurs_.size (); i--;)
92 Slur::add_extra_encompass (slurs_[i], e);
93 for (int i = end_slurs_.size (); i--;)
94 Slur::add_extra_encompass (end_slurs_[i], e);
96 else if (inside == SCM_BOOL_F)
98 Grob *slur = slurs_.size () ? slurs_[0] : 0;
99 slur = (end_slurs_.size () && !slur)
100 ? end_slurs_[0] : slur;
104 e->add_offset_callback (Slur::outside_slur_callback_proc, Y_AXIS);
105 e->set_property ("slur", slur->self_scm ());
112 Phrasing_slur_engraver::finalize ()
115 slurs_[0]->warning (_ ("unterminated phrasing slur"));
119 Phrasing_slur_engraver::process_music ()
127 if (events_[START] && slurs_.is_empty ())
129 Music *ev = events_[START];
131 Grob *slur = make_spanner ("PhrasingSlur", events_[START]->self_scm ());
132 Direction updown = to_dir (ev->get_property ("direction"));
134 set_grob_direction (slur, updown);
141 Phrasing_slur_engraver::stop_translation_timestep ()
144 events_[START] = events_[STOP] = 0;
147 ADD_TRANSLATOR (Phrasing_slur_engraver,
148 /* descr */ "Print phrasing slurs. Similar to @ref{Slur_engraver}",
149 /* creats*/ "PhrasingSlur",
150 /* accepts */ "phrasing-slur-event",
151 /* acks */ "note-column-interface tie-interface fingering-interface script-interface slur-interface",