2 hyphen-engraver.cc -- implement Hyphen_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2005 Glen Prideaux <glenprideaux@iname.com>,
7 Han-Wen Nienhuys <hanwen@cs.uu.nl>,
8 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "engraver.hh"
16 #include "pointer-group-interface.hh"
18 class Hyphen_engraver : public Engraver
22 Spanner *finished_hyphen_;
24 TRANSLATOR_DECLARATIONS (Hyphen_engraver);
27 DECLARE_ACKNOWLEDGER (lyric_syllable);
28 virtual void finalize ();
29 virtual bool try_music (Music *);
30 void stop_translation_timestep ();
31 void process_music ();
35 Hyphen_engraver::Hyphen_engraver ()
43 Hyphen_engraver::acknowledge_lyric_syllable (Grob_info i)
45 Item *item = i.item ();
47 hyphen_->set_bound (LEFT, item);
50 finished_hyphen_->set_bound (RIGHT, item);
54 Hyphen_engraver::try_music (Music *r)
64 completize_hyphen (Spanner *sp)
66 if (!sp->get_bound (RIGHT))
68 extract_item_set (sp, "heads", heads);
70 sp->set_bound (RIGHT, heads.top ());
75 Hyphen_engraver::finalize ()
79 completize_hyphen (hyphen_);
81 if (!hyphen_->get_bound (RIGHT))
83 hyphen_->warning (_ ("removing unterminated hyphen"));
92 completize_hyphen (finished_hyphen_);
94 if (!finished_hyphen_->get_bound (RIGHT))
96 finished_hyphen_->warning (_ ("unterminated hyphen; removing"));
97 finished_hyphen_->suicide ();
104 Hyphen_engraver::process_music ()
107 hyphen_ = make_spanner ("LyricHyphen", ev_->self_scm ());
111 Hyphen_engraver::stop_translation_timestep ()
113 if (finished_hyphen_ && finished_hyphen_->get_bound (RIGHT))
114 finished_hyphen_ = 0;
116 if (finished_hyphen_ && hyphen_)
118 programming_error ("hyphen not finished yet");
119 finished_hyphen_ = 0;
123 finished_hyphen_ = hyphen_;
129 #include "translator.icc"
131 ADD_ACKNOWLEDGER (Hyphen_engraver, lyric_syllable);
132 ADD_TRANSLATOR (Hyphen_engraver,
133 /* doc */ "Create lyric hyphens",
134 /* create */ "LyricHyphen",
135 /* accept */ "hyphen-event",