2 text-spanner-engraver.cc -- implement Text_spanner_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "dimensions.hh"
10 #include "musical-request.hh"
11 #include "paper-column.hh"
12 #include "note-column.hh"
14 #include "side-position-interface.hh"
15 #include "engraver.hh"
16 #include "group-interface.hh"
17 #include "directional-element-interface.hh"
18 #include "translator-group.hh"
19 #include "axis-group-interface.hh"
22 class Text_spanner_engraver : public Engraver
25 VIRTUAL_COPY_CONS (Translator);
26 Text_spanner_engraver ();
29 virtual void do_removal_processing ();
30 virtual void acknowledge_element (Score_element_info);
31 virtual bool do_try_music (Music *);
32 virtual void do_process_music ();
33 virtual void do_pre_move_processing ();
34 virtual void do_post_move_processing ();
39 Span_req *current_req_;
40 Drul_array<Span_req*> req_drul_;
44 ADD_THIS_TRANSLATOR (Text_spanner_engraver);
47 Text_spanner_engraver::Text_spanner_engraver ()
57 Text_spanner_engraver::do_post_move_processing ()
64 Text_spanner_engraver::do_try_music (Music *m)
66 if (Span_req *s = dynamic_cast <Span_req*> (m))
68 String t = ly_scm2string (s->get_mus_property ("span-type"));
79 req_drul_[s->get_span_dir()] = s;
87 Text_spanner_engraver::do_process_music ()
93 req_drul_[STOP]->origin ()->warning
94 (_ ("can't find start of text spanner"));
99 Score_element* e = unsmob_element (get_property ("currentMusicalColumn"));
100 span_->set_bound (RIGHT, e);
108 if (req_drul_[START])
112 req_drul_[START]->origin ()->warning
113 (_ ("already have a text spanner"));
117 current_req_ = req_drul_[START];
118 span_ = new Spanner (get_property ("TextSpanner"));
119 Side_position::set_axis (span_, Y_AXIS);
120 Score_element *e = unsmob_element (get_property ("currentMusicalColumn"));
121 span_->set_bound (LEFT, e);
122 announce_element (span_, req_drul_[START]);
128 Text_spanner_engraver::acknowledge_element (Score_element_info info)
130 if (span_ && Note_column::has_interface (info.elem_l_))
132 Side_position::add_support (span_, info.elem_l_);
133 add_bound_item (span_, dynamic_cast<Item*> (info.elem_l_));
138 Text_spanner_engraver::typeset_all ()
142 Side_position::add_staff_support (finished_);
143 typeset_element (finished_);
149 Text_spanner_engraver::do_pre_move_processing ()
155 Text_spanner_engraver::do_removal_processing ()
160 current_req_->origin ()->warning (_ ("unterminated text spanner"));