2 extender-engraver.cc -- implement Extender_engraver
4 (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
8 #include "musical-request.hh"
9 #include "extender-engraver.hh"
10 #include "extender-spanner.hh"
11 #include "score-column.hh"
12 #include "g-text-item.hh"
14 ADD_THIS_TRANSLATOR (Extender_engraver);
16 Extender_engraver::Extender_engraver ()
18 extender_spanner_p_ = 0;
23 Extender_engraver::acknowledge_element (Score_element_info i)
25 if (G_text_item* t = dynamic_cast<G_text_item*> (i.elem_l_))
27 Rhythmic_req * rh = dynamic_cast<Rhythmic_req*> (i.req_l_);
31 now_lyrics_.push (Text_lyric_tuple (t, rh, now_mom () + rh->length_mom ()));
33 UGH. What do we do in case of multiple alternatives?
35 if (extender_spanner_p_
36 && !extender_spanner_p_->spanned_drul_[RIGHT]
39 extender_spanner_p_->set_textitem (RIGHT, t);
46 Extender_engraver::do_try_music (Music* req_l)
48 if (Extender_req* p = dynamic_cast <Extender_req *> (req_l))
60 Extender_engraver::do_removal_processing ()
62 if (extender_spanner_p_)
64 req_l_->warning (_ ("unterminated extender"));
65 extender_spanner_p_->set_bounds(RIGHT, get_staff_info ().command_pcol_l ());
70 Extender_engraver::do_process_requests ()
72 Array<Text_lyric_tuple> stopped_texts;
73 Moment now = now_mom ();
75 stopped_texts.clear ();
76 while (past_lyrics_pq_.size ()
77 && past_lyrics_pq_.front ().end_ == now)
78 stopped_texts.push (past_lyrics_pq_.get ());
82 if (!stopped_texts.size ())
84 req_l_->warning ("Nothing to connect extender to on the left. Ignoring extender request");
88 extender_spanner_p_ = new Extender_spanner;
89 extender_spanner_p_->set_textitem (LEFT, stopped_texts[0].text_l_);
90 announce_element (Score_element_info (extender_spanner_p_, req_l_));
96 Extender_engraver::do_pre_move_processing ()
98 for (int i=0; i < now_lyrics_.size (); i++)
100 past_lyrics_pq_.insert (now_lyrics_[i]);
102 now_lyrics_.clear ();
104 if (extender_spanner_p_)
106 typeset_element (extender_spanner_p_);
107 extender_spanner_p_ = 0;
111 Extender_engraver::do_post_move_processing ()
113 Moment now = now_mom ();
114 while (past_lyrics_pq_.size () && past_lyrics_pq_.front ().end_ < now)
115 past_lyrics_pq_.delmin ();
120 /**********************************************************************/
121 Text_lyric_tuple::Text_lyric_tuple ()
128 Text_lyric_tuple::Text_lyric_tuple (G_text_item *h, Rhythmic_req*m, Moment mom)
137 Text_lyric_tuple::time_compare (Text_lyric_tuple const&h1,
138 Text_lyric_tuple const &h2)
140 return (h1.end_ - h2.end_ ).sign ();