2 note-head-line-engraver.cc -- implement Note_head_line_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2007 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "international.hh"
12 #include "rhythmic-head.hh"
14 #include "stream-event.hh"
18 #include "translator.icc"
20 class Glissando_engraver : public Engraver
23 TRANSLATOR_DECLARATIONS (Glissando_engraver);
26 DECLARE_TRANSLATOR_LISTENER (glissando);
27 DECLARE_ACKNOWLEDGER (rhythmic_head);
28 virtual void finalize ();
30 void stop_translation_timestep ();
31 void process_music ();
38 Glissando_engraver::Glissando_engraver ()
40 last_line_ = line_ = 0;
44 IMPLEMENT_TRANSLATOR_LISTENER (Glissando_engraver, glissando);
46 Glissando_engraver::listen_glissando (Stream_event *ev)
48 ASSIGN_EVENT_ONCE (event_, ev);
52 Glissando_engraver::process_music ()
55 line_ = make_spanner ("Glissando", event_->self_scm ());
59 Glissando_engraver::acknowledge_rhythmic_head (Grob_info info)
61 Grob *g = info.grob ();
63 line_->set_bound (LEFT, g);
67 last_line_->set_bound (RIGHT, g);
68 announce_end_grob (last_line_, g->self_scm ());
73 Glissando_engraver::stop_translation_timestep ()
75 if (last_line_ && last_line_->get_bound (RIGHT))
82 programming_error ("overwriting glissando");
90 Glissando_engraver::finalize ()
94 string msg = _ ("unterminated glissando");
97 event_->origin ()->warning (msg);
106 ADD_ACKNOWLEDGER (Glissando_engraver, rhythmic_head);
107 ADD_TRANSLATOR (Glissando_engraver,