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"
17 Spanner::do_print() const
20 DOUT << "Between " << classname (spanned_drul_[LEFT])
21 << " and " << classname (spanned_drul_[RIGHT]) << '\n';
24 DOUT << "Broken in " << to_str (broken_info_.size ()) << " pieces";
29 Spanner::break_into_pieces ()
34 Item * left = spanned_drul_[LEFT];
35 Item * right = spanned_drul_[RIGHT];
39 warning (_ ("left spanpoint is right spanpoint\n"));
43 Link_array<Item> break_points = pscore_l_->broken_col_range (left,right);
45 break_points.insert (left,0);
46 break_points.push (right);
48 for (int i=1; i < break_points.size(); i++)
50 Breaking_information info;
51 info.bounds_[LEFT] = break_points[i-1];
52 info.bounds_[RIGHT] = break_points[i];
56 Item *&pc_l = info.bounds_[d] ;
58 pc_l = pc_l->find_prebroken_piece(- d);
62 info.line_l_ = pc_l-> line_l ();
64 assert( info.line_l_ = pc_l->line_l ());
67 while ((flip(&d))!= LEFT);
68 info.broken_spanner_l_ = 0;
69 broken_info_.push (info);
74 Spanner::set_my_columns()
76 Direction i = (Direction)1;
79 if (!spanned_drul_[i]->line_l())
80 set_bounds(i,spanned_drul_[i]->find_prebroken_piece((Direction)-i));
82 while (flip(&i) != 1);
86 Spanner::set_bounds(Direction d, Item*i)
96 dim_cache_[X_AXIS]->parent_l_ = i->dim_cache_[X_AXIS];
99 if (spanned_drul_[Direction(-d)] == spanned_drul_[d]
101 warning (_f ("Spanner `%s\' with equal left and right spanpoints", classname (this)));
105 Spanner::do_break_processing()
108 break_into_pieces ();
110 handle_broken_dependencies();
115 spanned_drul_[LEFT]=0;
116 spanned_drul_[RIGHT]=0;
119 Spanner::Spanner (Spanner const &s)
122 spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;
127 Spanner::do_width() const
129 Real l = spanned_drul_[LEFT]->absolute_coordinate (X_AXIS);
130 Real r = spanned_drul_[RIGHT]->absolute_coordinate (X_AXIS);
133 warning ("Spanner with negative length");
135 return Interval (0, r-l);
139 Spanner::line_l() const
141 if (!spanned_drul_[LEFT] || !spanned_drul_[RIGHT])
143 if (spanned_drul_[LEFT]->line_l() != spanned_drul_[RIGHT]->line_l())
145 return spanned_drul_[LEFT]->line_l();
150 Spanner::find_broken_piece (Line_of_score*l) const
152 for (int i=0; i < broken_info_.size (); i++)
154 Spanner *me =(Spanner*) this;
155 Breaking_information &info = me->broken_info_[i];
156 if (info.line_l_ == l)
158 if (!info.broken_spanner_l_)
160 Spanner *span_p = dynamic_cast<Spanner*>(clone ());
161 span_p->set_bounds(LEFT,info.bounds_[LEFT]);
162 span_p->set_bounds(RIGHT,info.bounds_[RIGHT]);
163 pscore_l_->typeset_element (span_p);
165 info.broken_spanner_l_ = span_p;
166 span_p->handle_broken_dependencies();
169 return info.broken_spanner_l_;
177 Spanner::broken_b() const
179 return broken_info_.size();
183 Spanner::get_rods () const
190 Spanner::get_springs () const
197 Spanner::do_space_processing ()
199 Array<Rod> rs (get_rods ());
200 for (int i=0; i < rs.size (); i++)
202 rs[i].add_to_cols ();
205 Array<Spring> ss (get_springs ());
206 for (int i=0; i < ss.size (); i++)
208 ss[i].add_to_cols ();