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release: 1.1.51
[lilypond.git] / lily / lyric-engraver.cc
1 /*
2   lyric-engraver.cc -- implement Lyric_engraver
3
4   source file of the GNU LilyPond music typesetter
5
6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7   Jan Nieuwenhuizen <janneke@gnu.org>
8 */
9
10 #include "lyric-engraver.hh"
11 #include "musical-request.hh"
12 #include "text-item.hh"
13 #include "paper-def.hh"
14 #include "lookup.hh"
15
16 ADD_THIS_TRANSLATOR (Lyric_engraver);
17
18
19 Lyric_engraver::Lyric_engraver()
20 {
21   text_p_ =0;
22   req_l_ =0;
23 }
24
25 bool
26 Lyric_engraver::do_try_music (Music*r)
27 {
28   if (Lyric_req* l = dynamic_cast <Lyric_req *> (r))
29     {
30       if (req_l_)
31         return false;
32       req_l_ =l;
33       return true;
34     }
35   return false;
36 }
37
38 void
39 Lyric_engraver::do_process_requests()
40 {
41   if (req_l_)
42     {
43       text_p_=  new Text_item;
44       text_p_->text_str_ = req_l_->text_str_;
45
46       text_p_->text_str_ += " ";        // ugh.
47
48       Scalar style = get_property ("textStyle", 0);
49       if (style.length_i ())
50         text_p_->style_str_ = style;
51       
52       announce_element (Score_element_info (text_p_, req_l_));
53     }
54 }
55
56 void
57 Lyric_engraver::do_pre_move_processing()
58 {
59   if (text_p_)
60     {
61       typeset_element (text_p_);
62       text_p_ =0;
63     }
64 }
65
66 void
67 Lyric_engraver::do_post_move_processing ()
68 {
69   req_l_ =0;
70 }
71