+/*
+ hyphen-engraver.cc -- implement Hyphen_engraver
+
+ (c) 1999 Glen Prideaux <glenprideaux@iname.com>
+*/
+
+#include "proto.hh"
+#include "musical-request.hh"
+#include "hyphen-engraver.hh"
+#include "hyphen-spanner.hh"
+#include "score-column.hh"
+#include "text-item.hh"
+#include "extender-engraver.hh"
+
+ADD_THIS_TRANSLATOR (Hyphen_engraver);
+
+Hyphen_engraver::Hyphen_engraver ()
+{
+ hyphen_spanner_p_ = 0;
+ req_l_ = 0;
+}
+
+void
+Hyphen_engraver::acknowledge_element (Score_element_info i)
+{
+ if (Text_item* t = dynamic_cast<Text_item*> (i.elem_l_))
+ {
+ Rhythmic_req * rh = dynamic_cast<Rhythmic_req*> (i.req_l_);
+ if (!rh)
+ return;
+
+ now_lyrics_.push (Text_lyric_tuple (t, rh, now_mom () + rh->length_mom ()));
+ /*
+ UGH. What do we do in case of multiple alternatives?
+ */
+ if (hyphen_spanner_p_
+ && !hyphen_spanner_p_->spanned_drul_[RIGHT]
+ )
+ {
+ hyphen_spanner_p_->set_textitem (RIGHT, t);
+ }
+ }
+}
+
+
+bool
+Hyphen_engraver::do_try_music (Music* r)
+{
+ if (Hyphen_req* p = dynamic_cast <Hyphen_req *> (r))
+ {
+ if (req_l_)
+ return false;
+
+ req_l_ = p;
+ return true;
+ }
+ return false;
+}
+
+void
+Hyphen_engraver::do_removal_processing ()
+{
+ if (hyphen_spanner_p_)
+ {
+ req_l_->warning (_ ("unterminated hyphen"));
+ hyphen_spanner_p_->set_bounds(RIGHT, get_staff_info ().command_pcol_l ());
+ }
+}
+
+void
+Hyphen_engraver::do_process_requests ()
+{
+ Array<Text_lyric_tuple> stopped_texts;
+ Moment now = now_mom ();
+
+ stopped_texts.clear ();
+ while (past_lyrics_pq_.size ()
+ && past_lyrics_pq_.front ().end_ == now)
+ stopped_texts.push (past_lyrics_pq_.get ());
+
+ if (req_l_)
+ {
+ if (!stopped_texts.size ())
+ {
+ req_l_->warning ("Nothing to connect hyphen to on the left. Ignoring hyphen request");
+ return;
+ }
+
+ hyphen_spanner_p_ = new Hyphen_spanner;
+ hyphen_spanner_p_->set_textitem (LEFT, stopped_texts[0].text_l_);
+ announce_element (Score_element_info (hyphen_spanner_p_, req_l_));
+ }
+}
+
+
+void
+Hyphen_engraver::do_pre_move_processing ()
+{
+ for (int i=0; i < now_lyrics_.size (); i++)
+ {
+ past_lyrics_pq_.insert (now_lyrics_[i]);
+ }
+ now_lyrics_.clear ();
+
+ if (hyphen_spanner_p_)
+ {
+ typeset_element (hyphen_spanner_p_);
+ hyphen_spanner_p_ = 0;
+ }
+}
+void
+Hyphen_engraver::do_post_move_processing ()
+{
+ Moment now = now_mom ();
+ while (past_lyrics_pq_.size () && past_lyrics_pq_.front ().end_ < now)
+ past_lyrics_pq_.delmin ();
+
+ req_l_ =0;
+}
+
+