2 phrasing-slur-engraver.cc -- implement Phrasing_slur_engraver
4 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 #include "directional-element-interface.hh"
12 #include "note-column.hh"
17 It is possible that a slur starts and ends on the same note. At
18 least, it is for phrasing slurs: a note can be both beginning and
22 class Phrasing_slur_engraver : public Engraver
24 Drul_array<Music *> events_;
25 Music * running_slur_start_;
26 Link_array<Grob> slurs_;
27 Link_array<Grob> end_slurs_;
30 virtual bool try_music (Music*);
31 virtual void acknowledge_grob (Grob_info);
32 virtual void stop_translation_timestep ();
33 virtual void finalize ();
34 virtual void process_music ();
37 TRANSLATOR_DECLARATIONS (Phrasing_slur_engraver);
40 Phrasing_slur_engraver::Phrasing_slur_engraver ()
42 events_[START] =events_[STOP] = 0;
46 Phrasing_slur_engraver::try_music (Music *m)
48 if (m->is_mus_type ("phrasing-slur-event"))
51 Let's not start more than one slur per moment.
53 Direction d = to_dir (m->get_property ("span-direction"));
61 if (slurs_.is_empty ())
73 Phrasing_slur_engraver::acknowledge_grob (Grob_info info)
76 if (Note_column::has_interface (info.grob_))
78 for (int i = slurs_.size (); i--; )
79 Slur::add_column (slurs_[i], e);
80 for (int i = end_slurs_.size (); i-- ; )
81 Slur::add_column (end_slurs_[i], e);
86 TODO: maybe take more objects?
88 for (int i = slurs_.size (); i--; )
89 Slur::add_extra_encompass (slurs_[i], e);
90 for (int i = end_slurs_.size (); i--; )
91 Slur::add_extra_encompass (end_slurs_[i], e);
96 Phrasing_slur_engraver::finalize ()
99 slurs_[0]->warning (_("unterminated slur"));
103 Phrasing_slur_engraver::process_music ()
111 if (events_[START] && slurs_.is_empty ())
113 Music *ev = events_[START];
115 Grob * slur = make_spanner ("PhrasingSlur", events_[START]->self_scm ());
116 Direction updown = to_dir (ev->get_property ("direction"));
118 set_grob_direction (slur, updown);
125 Phrasing_slur_engraver::stop_translation_timestep ()
128 events_[START] = events_[STOP] = 0;
132 ENTER_DESCRIPTION (Phrasing_slur_engraver,
133 /* descr */ "Print phrasing slurs. Similar to @ref{Slur_engraver}",
134 /* creats*/ "PhrasingSlur",
135 /* accepts */ "phrasing-slur-event",
136 /* acks */ "note-column-interface slur-interface",