2 phrasing-slur-engraver.cc -- implement Phrasing_slur_engraver
4 (c) 1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "note-column.hh"
11 #include "translator-group.hh"
12 #include "engraver.hh"
20 Derive this from Slur_engraver. This code is completely duplicate.
22 class Phrasing_slur_engraver : public Engraver
24 Link_array<Music> eventses_;
25 Link_array<Music> new_phrasing_slur_evs_;
26 Link_array<Grob> phrasing_slur_l_stack_;
27 Link_array<Grob> end_phrasing_slurs_;
31 virtual bool try_music (Music*);
32 virtual void acknowledge_grob (Grob_info);
33 virtual void stop_translation_timestep ();
34 virtual void start_translation_timestep ();
35 virtual void finalize ();
36 virtual void process_acknowledged_grobs ();
39 TRANSLATOR_DECLARATIONS(Phrasing_slur_engraver);
43 Phrasing_slur_engraver::Phrasing_slur_engraver ()
45 last_start_ = Moment (-1);
49 Phrasing_slur_engraver::try_music (Music *ev)
51 if (ev->is_mus_type ("abort-event"))
53 for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
55 phrasing_slur_l_stack_[i]->suicide ();
57 phrasing_slur_l_stack_.clear ();
58 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
60 end_phrasing_slurs_[i]->suicide ();
62 end_phrasing_slurs_.clear ();
64 new_phrasing_slur_evs_.clear ();
66 else if (ev->is_mus_type ("phrasing-slur-event"))
69 Let's not start more than one phrasing slur per moment.
72 Direction d = to_dir (ev->get_mus_property ("span-direction"));
76 if (now_mom () > last_start_)
78 new_phrasing_slur_evs_.push (ev);
79 last_start_ = now_mom ();
85 new_phrasing_slur_evs_.push (ev);
93 Phrasing_slur_engraver::acknowledge_grob (Grob_info info)
95 if (Note_column::has_interface (info.grob_))
98 for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
99 Slur::add_column (phrasing_slur_l_stack_[i], e);
100 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
101 Slur::add_column (end_phrasing_slurs_[i], e);
106 Phrasing_slur_engraver::finalize ()
108 for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
111 Let's not typeset unterminated stuff
113 phrasing_slur_l_stack_[i]->suicide ();
115 phrasing_slur_l_stack_.clear ();
117 for (int i=0; i < eventses_.size (); i++)
119 eventses_[i]->origin ()->warning (_ ("unterminated phrasing slur"));
124 Phrasing_slur_engraver::process_acknowledged_grobs ()
126 Link_array<Grob> start_phrasing_slurs;
127 for (int i=0; i< new_phrasing_slur_evs_.size (); i++)
129 Music* phrasing_slur_ev = new_phrasing_slur_evs_[i];
130 // end phrasing slur: move the phrasing slur to other array
132 Direction d = to_dir (phrasing_slur_ev->get_mus_property ("span-direction"));
136 if (phrasing_slur_l_stack_.empty ())
137 phrasing_slur_ev->origin ()->warning (_f ("can't find start of phrasing slur"));
140 Grob* phrasing_slur = phrasing_slur_l_stack_.pop ();
141 end_phrasing_slurs_.push (phrasing_slur);
147 // push a new phrasing_slur onto stack.
148 // (use temp. array to wait for all phrasing_slur STOPs)
149 Grob* phrasing_slur = make_spanner ("PhrasingSlur");
150 Slur::set_interface (phrasing_slur); // can't remove.
153 if (Direction updown = to_dir (phrasing_slur_ev->get_mus_property ("direction")))
155 phrasing_slur->set_grob_property ("direction", gh_int2scm (updown));
158 start_phrasing_slurs.push (phrasing_slur);
159 eventses_.push (phrasing_slur_ev);
160 announce_grob(phrasing_slur, phrasing_slur_ev->self_scm());
163 for (int i=0; i < start_phrasing_slurs.size (); i++)
164 phrasing_slur_l_stack_.push (start_phrasing_slurs[i]);
165 new_phrasing_slur_evs_.clear ();
169 Phrasing_slur_engraver::stop_translation_timestep ()
171 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
173 typeset_grob (end_phrasing_slurs_[i]);
175 end_phrasing_slurs_.clear ();
179 Phrasing_slur_engraver::start_translation_timestep ()
181 new_phrasing_slur_evs_.clear ();
186 ENTER_DESCRIPTION(Phrasing_slur_engraver,
187 /* descr */ "Print phrasing slurs. Similar to @ref{Slur_engraver}",
188 /* creats*/ "PhrasingSlur",
189 /* accepts */ "phrasing-slur-event",
190 /* acks */ "note-column-interface",