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 ()
60 line_
= new Spanner (get_property ("Glissando"));
61 announce_grob (line_
, event_
->self_scm ());
67 Glissando_engraver::acknowledge_grob (Grob_info info
)
69 if (Rhythmic_head::has_interface (info
.grob_
))
71 Grob
* g
= info
.grob_
;
73 line_
->set_bound (LEFT
, g
);
76 last_line_
->set_bound (RIGHT
, g
);
82 Glissando_engraver::stop_translation_timestep ()
84 if (last_line_
&& last_line_
->get_bound (RIGHT
))
86 typeset_grob (last_line_
);
96 Glissando_engraver::finalize ()
100 String msg
= _("Unterminated glissando.");
103 event_
->origin ()->warning (msg
);
114 ENTER_DESCRIPTION(Glissando_engraver
,
115 /* descr */ "Engrave a glissandi",
116 /* creats*/ "Glissando",
117 /* accepts */ "glissando-event",
118 /* acks */ "rhythmic-head-interface",
119 /* reads */ "followVoice",