2 spanner.cc -- implement Spanner
4 source file of the GNU LilyPond music typesetter
6 (c) 1996,1997 Han-Wen Nienhuys <hanwen@stack.nl>
15 IMPLEMENT_IS_TYPE_B1(Spanner,Score_elem);
18 Spanner::do_print() const
21 DOUT << "Between col ";
22 if (broken_into_l_arr_.size())
23 DOUT << "with broken pieces\n";
28 Spanner::break_into_pieces ()
30 if (broken_into_l_arr_.size())
33 Item * left = spanned_drul_[LEFT];
34 Item * right = spanned_drul_[RIGHT];
37 Link_array<Item> break_cols = pscore_l_->broken_col_range (left,right);
38 Link_array<Spanner> broken_into_l_arr;
40 break_cols.insert (left,0);
41 break_cols.push (right);
43 for (int i=1; i < break_cols.size(); i++)
45 Spanner* span_p = clone()->spanner ();
46 left = break_cols[i-1];
47 right = break_cols[i];
49 right = right->find_prebroken_piece(-1);
51 left = left->find_prebroken_piece(1);
53 assert (left&&right && left->line_l() == right->line_l());
55 span_p->set_bounds(LEFT,left);
56 span_p->set_bounds(RIGHT,right);
58 pscore_l_->typeset_broken_spanner (span_p);
59 broken_into_l_arr.push (span_p);
62 broken_into_l_arr_ = broken_into_l_arr;
66 Spanner::set_my_columns()
68 Direction i = (Direction)1;
71 if (!spanned_drul_[i]->line_l())
72 set_bounds(i,spanned_drul_[i]->find_prebroken_piece(-i));
79 Spanner::set_bounds(Direction d, Item*i)
83 spanned_drul_[d]->attached_span_l_arr_.substitute(this,0);
87 i->attached_span_l_arr_.push(this);
89 assert (!spanned_drul_[d] ||
90 spanned_drul_[Direction(-d)] != spanned_drul_[d]);
95 Spanner::do_break_processing()
100 for (int i=0; i < broken_into_l_arr_.size(); i++)
101 broken_into_l_arr_[i]->handle_broken_dependencies();
105 handle_broken_dependencies();
112 spanned_drul_[LEFT]=0;
113 spanned_drul_[RIGHT]=0;
117 Spanner::do_TeX_output_str () const
119 Offset left_off (spanned_drul_[LEFT]->absolute_coordinate(X_AXIS), 0);
120 return make_TeX_string (absolute_offset() + left_off);
124 Spanner::do_width() const
126 Real l = spanned_drul_[LEFT]->absolute_coordinate (X_AXIS);
127 Real r = spanned_drul_[RIGHT]->absolute_coordinate (X_AXIS);
130 return Interval (0, r-l);
134 Spanner::line_l() const
136 if (!spanned_drul_[LEFT] || !spanned_drul_[RIGHT])
138 if (spanned_drul_[LEFT]->line_l() != spanned_drul_[RIGHT]->line_l())
140 return spanned_drul_[LEFT]->line_l();
145 Spanner::find_broken_piece (Line_of_score*l) const
147 for (int i=0; i < broken_into_l_arr_.size(); i++)
148 if (broken_into_l_arr_[i]->line_l() == l)
149 return broken_into_l_arr_[i];
155 Spanner::broken_b() const
157 return broken_into_l_arr_.size();
163 if (spanned_drul_[LEFT])
165 spanned_drul_[LEFT]->attached_span_l_arr_.substitute (this,0);
166 spanned_drul_[LEFT] =0;
168 if (spanned_drul_[RIGHT])
170 spanned_drul_[RIGHT]->attached_span_l_arr_.substitute (this,0);
171 spanned_drul_[RIGHT] = 0;
176 Spanner::do_junk_links()
178 spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;