2 note-head-line-engraver.cc -- implement Note_head_line_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2006 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "international.hh"
12 #include "rhythmic-head.hh"
14 #include "stream-event.hh"
17 #include "translator.icc"
20 Create line-spanner grobs for glissandi lines that connect note
23 class Glissando_engraver : public Engraver
26 TRANSLATOR_DECLARATIONS (Glissando_engraver);
29 DECLARE_TRANSLATOR_LISTENER (glissando);
30 DECLARE_ACKNOWLEDGER (rhythmic_head);
31 virtual void finalize ();
33 void stop_translation_timestep ();
34 void process_music ();
41 Glissando_engraver::Glissando_engraver ()
43 last_line_ = line_ = 0;
47 IMPLEMENT_TRANSLATOR_LISTENER (Glissando_engraver, glissando);
49 Glissando_engraver::listen_glissando (Stream_event *ev)
51 ASSIGN_EVENT_ONCE (event_, ev);
55 Glissando_engraver::process_music ()
58 line_ = make_spanner ("Glissando", event_->self_scm ());
62 Glissando_engraver::acknowledge_rhythmic_head (Grob_info info)
64 Grob *g = info.grob ();
66 line_->set_bound (LEFT, g);
69 last_line_->set_bound (RIGHT, g);
73 Glissando_engraver::stop_translation_timestep ()
75 if (last_line_ && last_line_->get_bound (RIGHT))
81 programming_error ("overwriting glissando");
89 Glissando_engraver::finalize ()
93 string msg = _ ("unterminated glissando");
96 event_->origin ()->warning (msg);
105 ADD_ACKNOWLEDGER (Glissando_engraver, rhythmic_head);
106 ADD_TRANSLATOR (Glissando_engraver,
107 /* doc */ "Engrave a glissandi",
108 /* create */ "Glissando",
109 /* read */ "followVoice",