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"
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 ("phrasing-slur-event"))
54 Let's not start more than one phrasing slur per moment.
57 Direction d = to_dir (ev->get_mus_property ("span-direction"));
61 if (now_mom () > last_start_)
63 new_phrasing_slur_evs_.push (ev);
64 last_start_ = now_mom ();
70 new_phrasing_slur_evs_.push (ev);
78 Phrasing_slur_engraver::acknowledge_grob (Grob_info info)
80 if (Note_column::has_interface (info.grob_))
83 for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
84 Slur::add_column (phrasing_slur_l_stack_[i], e);
85 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
86 Slur::add_column (end_phrasing_slurs_[i], e);
91 Phrasing_slur_engraver::finalize ()
93 for (int i = 0; i < phrasing_slur_l_stack_.size (); i++)
96 Let's not typeset unterminated stuff
98 phrasing_slur_l_stack_[i]->suicide ();
100 phrasing_slur_l_stack_.clear ();
102 for (int i=0; i < eventses_.size (); i++)
104 eventses_[i]->origin ()->warning (_ ("unterminated phrasing slur"));
109 Phrasing_slur_engraver::process_acknowledged_grobs ()
111 Link_array<Grob> start_phrasing_slurs;
112 for (int i=0; i< new_phrasing_slur_evs_.size (); i++)
114 Music* phrasing_slur_ev = new_phrasing_slur_evs_[i];
115 // end phrasing slur: move the phrasing slur to other array
117 Direction d = to_dir (phrasing_slur_ev->get_mus_property ("span-direction"));
121 if (phrasing_slur_l_stack_.empty ())
122 phrasing_slur_ev->origin ()->warning (_f ("can't find start of phrasing slur"));
125 Grob* phrasing_slur = phrasing_slur_l_stack_.pop ();
126 end_phrasing_slurs_.push (phrasing_slur);
132 // push a new phrasing_slur onto stack.
133 // (use temp. array to wait for all phrasing_slur STOPs)
134 Grob* phrasing_slur = make_spanner ("PhrasingSlur");
135 Slur::set_interface (phrasing_slur); // can't remove.
138 if (Direction updown = to_dir (phrasing_slur_ev->get_mus_property ("direction")))
140 phrasing_slur->set_grob_property ("direction", gh_int2scm (updown));
143 start_phrasing_slurs.push (phrasing_slur);
144 eventses_.push (phrasing_slur_ev);
145 announce_grob(phrasing_slur, phrasing_slur_ev->self_scm());
148 for (int i=0; i < start_phrasing_slurs.size (); i++)
149 phrasing_slur_l_stack_.push (start_phrasing_slurs[i]);
150 new_phrasing_slur_evs_.clear ();
154 Phrasing_slur_engraver::stop_translation_timestep ()
156 for (int i = 0; i < end_phrasing_slurs_.size (); i++)
158 typeset_grob (end_phrasing_slurs_[i]);
160 end_phrasing_slurs_.clear ();
164 Phrasing_slur_engraver::start_translation_timestep ()
166 new_phrasing_slur_evs_.clear ();
171 ENTER_DESCRIPTION(Phrasing_slur_engraver,
172 /* descr */ "Print phrasing slurs. Similar to @ref{Slur_engraver}",
173 /* creats*/ "PhrasingSlur",
174 /* accepts */ "phrasing-slur-event",
175 /* acks */ "note-column-interface",