2 note-head-line-engraver.cc -- implement Note_head_line_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2003 Jan Nieuwenhuizen <janneke@gnu.org>
12 #include "rhythmic-head.hh"
13 #include "engraver.hh"
16 Create line-spanner grobs for glissandi lines that connect note
19 class Glissando_engraver : public Engraver
22 TRANSLATOR_DECLARATIONS(Glissando_engraver);
25 virtual void acknowledge_grob (Grob_info);
26 virtual void finalize ();
27 virtual void stop_translation_timestep ();
28 virtual bool try_music (Music *);
29 virtual void process_music ();
36 Glissando_engraver::Glissando_engraver ()
38 last_line_ = line_ = 0;
43 Glissando_engraver::try_music (Music* m)
54 Glissando_engraver::process_music ()
58 line_ = make_spanner ("Glissando");
59 announce_grob (line_, event_->self_scm ());
65 Glissando_engraver::acknowledge_grob (Grob_info info)
67 if (Rhythmic_head::has_interface (info.grob_))
69 Grob * g = info.grob_;
71 line_->set_bound (LEFT, g);
74 last_line_->set_bound (RIGHT, g);
80 Glissando_engraver::stop_translation_timestep ()
82 if (last_line_ && last_line_->get_bound (RIGHT))
84 typeset_grob (last_line_);
90 programming_error ("Overwriting glissando.");
98 Glissando_engraver::finalize ()
102 String msg = _("Unterminated glissando.");
105 event_->origin ()->warning (msg);
116 ENTER_DESCRIPTION(Glissando_engraver,
117 /* descr */ "Engrave a glissandi",
118 /* creats*/ "Glissando",
119 /* accepts */ "glissando-event",
120 /* acks */ "rhythmic-head-interface",
121 /* reads */ "followVoice",