2 spanner.cc -- implement Spanner
4 source file of the GNU LilyPond music typesetter
6 (c) 1996, 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
13 #include "molecule.hh"
14 #include "paper-outputter.hh"
19 Spanner::do_print() const
22 DOUT << "Between " << classname (spanned_drul_[LEFT])
23 << " and " << classname (spanned_drul_[RIGHT]) << '\n';
24 /* if (broken_into_l_arr_.size())
26 DOUT << "with broken pieces:\n";
27 for (int i=0; i < broken_into_l_arr_.size (); i++)
28 broken_into_l_arr_[i]->print ();
34 Spanner::break_into_pieces ()
39 Item * left = spanned_drul_[LEFT];
40 Item * right = spanned_drul_[RIGHT];
44 warning (_ ("left spanpoint is right spanpoint\n"));
48 Link_array<Item> break_points = pscore_l_->broken_col_range (left,right);
49 Link_array<Spanner> broken_into_l_arr;
51 break_points.insert (left,0);
52 break_points.push (right);
55 for (int i=1; i < break_points.size(); i++)
57 Breaking_information info;
58 info.bounds_[LEFT] = break_points[i-1];
59 info.bounds_[RIGHT] = break_points[i];
63 Item *&pc_l = info.bounds_[d] ;
65 pc_l = pc_l->find_prebroken_piece(- d);
69 info.line_l_ = pc_l-> line_l ();
71 assert( info.line_l_ = pc_l->line_l ());
74 while ((flip(&d))!= LEFT);
75 info.broken_spanner_l_ = 0;
76 broken_info_.push (info);
81 Spanner::set_my_columns()
83 Direction i = (Direction)1;
86 if (!spanned_drul_[i]->line_l())
87 set_bounds(i,spanned_drul_[i]->find_prebroken_piece((Direction)-i));
89 while (flip(&i) != 1);
94 Spanner::set_bounds(Direction d, Item*i)
97 spanned_drul_[d]->attached_span_l_arr_.substitute(this,0);
101 i->attached_span_l_arr_.push(this);
103 if (spanned_drul_[Direction(-d)] == spanned_drul_[d]
105 warning (_f ("Spanner `%s\' with equal left and right spanpoints", classname (this)));
109 Spanner::do_break_processing()
112 break_into_pieces ();
114 handle_broken_dependencies();
119 unbroken_original_l_ =0;
120 spanned_drul_[LEFT]=0;
121 spanned_drul_[RIGHT]=0;
124 Spanner::Spanner (Spanner const &s)
127 spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;
128 unbroken_original_l_ = 0;
132 Spanner::output_processing ()
136 output_p_ = do_brew_molecule_p ();
137 Offset left_off (spanned_drul_[LEFT]->absolute_coordinate(X_AXIS), 0);
138 Offset o = absolute_offset() + left_off;
139 pscore_l_->outputter_l_->output_molecule (output_p_, o, classname (this));
143 Spanner::do_width() const
145 Real l = spanned_drul_[LEFT]->absolute_coordinate (X_AXIS);
146 Real r = spanned_drul_[RIGHT]->absolute_coordinate (X_AXIS);
149 warning ("Spanner with negative length");
151 return Interval (0, r-l);
155 Spanner::line_l() const
157 if (!spanned_drul_[LEFT] || !spanned_drul_[RIGHT])
159 if (spanned_drul_[LEFT]->line_l() != spanned_drul_[RIGHT]->line_l())
161 return spanned_drul_[LEFT]->line_l();
166 Spanner::find_broken_piece (Line_of_score*l) const
168 for (int i=0; i < broken_info_.size (); i++)
170 Spanner *me =(Spanner*) this;
171 Breaking_information &info = me->broken_info_[i];
172 if (info.line_l_ == l)
174 if (!info.broken_spanner_l_)
176 Spanner *span_p = dynamic_cast<Spanner*>(clone ());
177 span_p -> unbroken_original_l_ =(Spanner*)this;
178 span_p->set_bounds(LEFT,info.bounds_[LEFT]);
179 span_p->set_bounds(RIGHT,info.bounds_[RIGHT]);
180 pscore_l_->typeset_element (span_p);
183 info.broken_spanner_l_ = span_p;
184 /* if (Axis_group_spanner *ags
185 = dynamic_cast<Axis_group_spanner*> (span_p))
190 span_p->handle_broken_dependencies();
193 return info.broken_spanner_l_;
201 Spanner::broken_b() const
203 return broken_info_.size();
209 set_bounds (LEFT, 0);
210 set_bounds (RIGHT, 0);
212 if (unbroken_original_l_)
214 for (int i=0; i < unbroken_original_l_->broken_info_.size (); i++)
216 if (unbroken_original_l_->broken_info_[i].broken_spanner_l_ == this)
217 unbroken_original_l_->broken_info_[i].broken_spanner_l_ = 0;
224 Spanner::do_junk_links()
226 spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;
230 Spanner::get_rods () const
237 Spanner::do_space_processing ()
239 Array<Rod> rs (get_rods ());
240 for (int i=0; i < rs.size (); i++)
242 rs[i].add_to_cols ();