2 phrasing-slur-engraver.cc -- implement Phrasing_slur_engraver
4 (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "note-column.hh"
11 #include "translator-group.hh"
12 #include "engraver.hh"
15 class Phrasing_slur_engraver : public Engraver
17 Link_array<Music> requestses_;
18 Link_array<Music> new_phrasing_slur_reqs_;
19 Link_array<Grob> phrasing_slur_l_stack_;
20 Link_array<Grob> end_phrasing_slurs_;
24 virtual bool try_music (Music*);
25 virtual void acknowledge_grob (Grob_info);
26 virtual void stop_translation_timestep ();
27 virtual void start_translation_timestep ();
28 virtual void finalize ();
29 virtual void process_acknowledged_grobs ();
32 TRANSLATOR_DECLARATIONS(Phrasing_slur_engraver);
36 Phrasing_slur_engraver::Phrasing_slur_engraver ()
38 last_start_ = Moment (-1);
42 Phrasing_slur_engraver::try_music (Music *req)
44 if (req->is_mus_type ("abort-event"))
46 for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
48 phrasing_slur_l_stack_[i]->suicide ();
50 phrasing_slur_l_stack_.clear ();
51 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
53 end_phrasing_slurs_[i]->suicide ();
55 end_phrasing_slurs_.clear ();
57 new_phrasing_slur_reqs_.clear ();
59 else if (req->is_mus_type ("phrasing-slur-event"))
62 Let's not start more than one phrasing slur per moment.
65 Direction d = to_dir (req->get_mus_property ("span-direction"));
69 if (now_mom () > last_start_)
71 new_phrasing_slur_reqs_.push (req);
72 last_start_ = now_mom ();
78 new_phrasing_slur_reqs_.push (req);
86 Phrasing_slur_engraver::acknowledge_grob (Grob_info info)
88 if (Note_column::has_interface (info.grob_))
91 for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
92 Slur::add_column (phrasing_slur_l_stack_[i], e);
93 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
94 Slur::add_column (end_phrasing_slurs_[i], e);
99 Phrasing_slur_engraver::finalize ()
101 for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
104 typeset_grob (phrasing_slur_l_stack_[i]);
107 Let's not typeset unterminated stuff
109 phrasing_slur_l_stack_[i]->suicide ();
112 phrasing_slur_l_stack_.clear ();
114 for (int i=0; i < requestses_.size (); i++)
116 requestses_[i]->origin ()->warning (_ ("unterminated phrasing slur"));
121 Phrasing_slur_engraver::process_acknowledged_grobs ()
123 Link_array<Grob> start_phrasing_slurs;
124 for (int i=0; i< new_phrasing_slur_reqs_.size (); i++)
126 Music* phrasing_slur_req = new_phrasing_slur_reqs_[i];
127 // end phrasing slur: move the phrasing slur to other array
129 Direction d = to_dir (phrasing_slur_req->get_mus_property ("span-direction"));
133 if (phrasing_slur_l_stack_.empty ())
134 phrasing_slur_req->origin ()->warning (_f ("can't find start of phrasing slur"));
137 Grob* phrasing_slur = phrasing_slur_l_stack_.pop ();
138 end_phrasing_slurs_.push (phrasing_slur);
144 // push a new phrasing_slur onto stack.
145 // (use temp. array to wait for all phrasing_slur STOPs)
146 Grob* phrasing_slur = new Spanner (get_property ("PhrasingSlur"));
147 Slur::set_interface (phrasing_slur); // can't remove.
148 start_phrasing_slurs.push (phrasing_slur);
149 requestses_.push (phrasing_slur_req);
150 announce_grob(phrasing_slur, phrasing_slur_req->self_scm());
153 for (int i=0; i < start_phrasing_slurs.size (); i++)
154 phrasing_slur_l_stack_.push (start_phrasing_slurs[i]);
155 new_phrasing_slur_reqs_.clear ();
159 Phrasing_slur_engraver::stop_translation_timestep ()
161 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
163 typeset_grob (end_phrasing_slurs_[i]);
165 end_phrasing_slurs_.clear ();
169 Phrasing_slur_engraver::start_translation_timestep ()
171 new_phrasing_slur_reqs_.clear ();
176 ENTER_DESCRIPTION(Phrasing_slur_engraver,
177 /* descr */ "Print phrasing slurs. Similar to Slur_engraver",
178 /* creats*/ "PhrasingSlur",
179 /* accepts */ "phrasing-slur-event",
180 /* acks */ "note-column-interface",
181 /* reads */ "slurMelismaBusy",