2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2000--2011 Jan Nieuwenhuizen <janneke@gnu.org>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "engraver.hh"
22 #include "international.hh"
23 #include "note-column.hh"
24 #include "pointer-group-interface.hh"
25 #include "side-position-interface.hh"
27 #include "stream-event.hh"
29 #include "translator.icc"
31 class Text_spanner_engraver
: public Engraver
34 TRANSLATOR_DECLARATIONS (Text_spanner_engraver
);
36 virtual void finalize ();
37 DECLARE_TRANSLATOR_LISTENER (text_span
);
38 DECLARE_ACKNOWLEDGER (note_column
);
39 void stop_translation_timestep ();
40 void process_music ();
45 Stream_event
*current_event_
;
46 Drul_array
<Stream_event
*> event_drul_
;
50 Text_spanner_engraver::Text_spanner_engraver ()
55 event_drul_
[START
] = 0;
56 event_drul_
[STOP
] = 0;
59 IMPLEMENT_TRANSLATOR_LISTENER (Text_spanner_engraver
, text_span
);
61 Text_spanner_engraver::listen_text_span (Stream_event
*ev
)
63 Direction d
= to_dir (ev
->get_property ("span-direction"));
64 ASSIGN_EVENT_ONCE (event_drul_
[d
], ev
);
68 Text_spanner_engraver::process_music ()
70 if (event_drul_
[STOP
])
73 event_drul_
[STOP
]->origin ()->warning (_ ("cannot find start of text spanner"));
77 announce_end_grob (finished_
, SCM_EOL
);
83 if (event_drul_
[START
])
86 event_drul_
[START
]->origin ()->warning (_ ("already have a text spanner"));
89 current_event_
= event_drul_
[START
];
90 span_
= make_spanner ("TextSpanner", event_drul_
[START
]->self_scm ());
92 Side_position_interface::set_axis (span_
, Y_AXIS
);
93 event_drul_
[START
] = 0;
99 Text_spanner_engraver::typeset_all ()
103 if (!finished_
->get_bound (RIGHT
))
105 Grob
*e
= unsmob_grob (get_property ("currentMusicalColumn"));
106 finished_
->set_bound (RIGHT
, e
);
113 Text_spanner_engraver::stop_translation_timestep ()
115 if (span_
&& !span_
->get_bound (LEFT
))
117 Grob
*e
= unsmob_grob (get_property ("currentMusicalColumn"));
118 span_
->set_bound (LEFT
, e
);
122 event_drul_
[START
] = 0;
123 event_drul_
[STOP
] = 0;
127 Text_spanner_engraver::finalize ()
132 current_event_
->origin ()->warning (_ ("unterminated text spanner"));
140 Text_spanner_engraver::acknowledge_note_column (Grob_info info
)
143 Pointer_group_interface::add_grob (span_
,
144 ly_symbol2scm ("note-columns"),
146 add_bound_item (span_
, info
.grob ());
147 } else if (finished_
) {
148 Pointer_group_interface::add_grob (finished_
, ly_symbol2scm ("note-columns"),
150 add_bound_item (finished_
, info
.grob ());
154 ADD_ACKNOWLEDGER (Text_spanner_engraver
, note_column
);
156 ADD_TRANSLATOR (Text_spanner_engraver
,
158 "Create text spanner from an event.",