2 phrasing-slur-engraver.cc -- implement Phrasing_slur_engraver
4 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "note-column.hh"
13 #include "engraver.hh"
21 Derive this from Slur_engraver. This code is completely duplicate.
23 class Phrasing_slur_engraver : public Engraver
25 Link_array<Music> eventses_;
26 Link_array<Music> new_phrasing_slur_evs_;
27 Link_array<Grob> phrasing_slurs_;
28 Link_array<Grob> end_phrasing_slurs_;
32 virtual bool try_music (Music*);
33 virtual void acknowledge_grob (Grob_info);
34 virtual void stop_translation_timestep ();
35 virtual void start_translation_timestep ();
36 virtual void finalize ();
37 virtual void process_acknowledged_grobs ();
40 TRANSLATOR_DECLARATIONS (Phrasing_slur_engraver);
44 Phrasing_slur_engraver::Phrasing_slur_engraver ()
46 last_start_ = Moment (-1);
50 Phrasing_slur_engraver::try_music (Music *ev)
52 if (ev->is_mus_type ("phrasing-slur-event"))
55 Let's not start more than one phrasing slur per moment.
58 Direction d = to_dir (ev->get_property ("span-direction"));
62 if (now_mom () > last_start_)
64 new_phrasing_slur_evs_.push (ev);
65 last_start_ = now_mom ();
71 new_phrasing_slur_evs_.push (ev);
79 Phrasing_slur_engraver::acknowledge_grob (Grob_info info)
81 if (Note_column::has_interface (info.grob_))
84 for (int i = 0; i < phrasing_slurs_.size (); i++)
85 Slur::add_column (phrasing_slurs_[i], e);
86 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
87 Slur::add_column (end_phrasing_slurs_[i], e);
92 Phrasing_slur_engraver::finalize ()
94 for (int i = 0; i < phrasing_slurs_.size (); i++)
97 Let's not typeset unterminated stuff
99 phrasing_slurs_[i]->suicide ();
101 phrasing_slurs_.clear ();
103 for (int i=0; i < eventses_.size (); i++)
105 eventses_[i]->origin ()->warning (_ ("unterminated phrasing slur"));
110 Phrasing_slur_engraver::process_acknowledged_grobs ()
112 Link_array<Grob> start_phrasing_slurs;
113 for (int i=0; i< new_phrasing_slur_evs_.size (); i++)
115 Music* phrasing_slur_ev = new_phrasing_slur_evs_[i];
116 // end phrasing slur: move the phrasing slur to other array
118 Direction d = to_dir (phrasing_slur_ev->get_property ("span-direction"));
122 if (phrasing_slurs_.is_empty ())
123 phrasing_slur_ev->origin ()->warning (_f ("can't find start of phrasing slur"));
126 Grob* phrasing_slur = phrasing_slurs_.pop ();
127 end_phrasing_slurs_.push (phrasing_slur);
133 // push a new phrasing_slur onto stack.
134 // (use temp. array to wait for all phrasing_slur STOPs)
135 Grob* phrasing_slur = make_spanner ("PhrasingSlur");
136 Slur::set_interface (phrasing_slur); // can't remove.
139 if (Direction updown = to_dir (phrasing_slur_ev->get_property ("direction")))
141 phrasing_slur->set_property ("direction", gh_int2scm (updown));
144 start_phrasing_slurs.push (phrasing_slur);
145 eventses_.push (phrasing_slur_ev);
146 announce_grob (phrasing_slur, phrasing_slur_ev->self_scm ());
149 for (int i=0; i < start_phrasing_slurs.size (); i++)
150 phrasing_slurs_.push (start_phrasing_slurs[i]);
151 new_phrasing_slur_evs_.clear ();
155 Phrasing_slur_engraver::stop_translation_timestep ()
157 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
159 typeset_grob (end_phrasing_slurs_[i]);
161 end_phrasing_slurs_.clear ();
165 Phrasing_slur_engraver::start_translation_timestep ()
167 new_phrasing_slur_evs_.clear ();
172 ENTER_DESCRIPTION (Phrasing_slur_engraver,
173 /* descr */ "Print phrasing slurs. Similar to @ref{Slur_engraver}",
174 /* creats*/ "PhrasingSlur",
175 /* accepts */ "phrasing-slur-event",
176 /* acks */ "note-column-interface",