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';
26 DOUT << "Broken in " << to_str (broken_info_.size ()) << " pieces";
31 Spanner::break_into_pieces ()
36 Item * left = spanned_drul_[LEFT];
37 Item * right = spanned_drul_[RIGHT];
41 warning (_ ("left spanpoint is right spanpoint\n"));
45 Link_array<Item> break_points = pscore_l_->broken_col_range (left,right);
46 Link_array<Spanner> broken_into_l_arr;
48 break_points.insert (left,0);
49 break_points.push (right);
52 for (int i=1; i < break_points.size(); i++)
54 Breaking_information info;
55 info.bounds_[LEFT] = break_points[i-1];
56 info.bounds_[RIGHT] = break_points[i];
60 Item *&pc_l = info.bounds_[d] ;
62 pc_l = pc_l->find_prebroken_piece(- d);
66 info.line_l_ = pc_l-> line_l ();
68 assert( info.line_l_ = pc_l->line_l ());
71 while ((flip(&d))!= LEFT);
72 info.broken_spanner_l_ = 0;
73 broken_info_.push (info);
78 Spanner::set_my_columns()
80 Direction i = (Direction)1;
83 if (!spanned_drul_[i]->line_l())
84 set_bounds(i,spanned_drul_[i]->find_prebroken_piece((Direction)-i));
86 while (flip(&i) != 1);
91 Spanner::set_bounds(Direction d, Item*i)
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;
126 Spanner::output_processing ()
128 if (get_elt_property (transparent_scm_sym) != SCM_BOOL_F)
131 output_p_ = do_brew_molecule_p ();
132 Offset left_off (spanned_drul_[LEFT]->absolute_coordinate(X_AXIS), 0);
133 Offset o = absolute_offset() + left_off;
134 pscore_l_->outputter_l_->output_molecule (output_p_, o, classname (this));
138 Spanner::do_width() const
140 Real l = spanned_drul_[LEFT]->absolute_coordinate (X_AXIS);
141 Real r = spanned_drul_[RIGHT]->absolute_coordinate (X_AXIS);
144 warning ("Spanner with negative length");
146 return Interval (0, r-l);
150 Spanner::line_l() const
152 if (!spanned_drul_[LEFT] || !spanned_drul_[RIGHT])
154 if (spanned_drul_[LEFT]->line_l() != spanned_drul_[RIGHT]->line_l())
156 return spanned_drul_[LEFT]->line_l();
161 Spanner::find_broken_piece (Line_of_score*l) const
163 for (int i=0; i < broken_info_.size (); i++)
165 Spanner *me =(Spanner*) this;
166 Breaking_information &info = me->broken_info_[i];
167 if (info.line_l_ == l)
169 if (!info.broken_spanner_l_)
171 Spanner *span_p = dynamic_cast<Spanner*>(clone ());
172 span_p->set_bounds(LEFT,info.bounds_[LEFT]);
173 span_p->set_bounds(RIGHT,info.bounds_[RIGHT]);
174 pscore_l_->typeset_element (span_p);
177 info.broken_spanner_l_ = span_p;
178 span_p->handle_broken_dependencies();
181 return info.broken_spanner_l_;
189 Spanner::broken_b() const
191 return broken_info_.size();
198 Spanner::get_rods () const
205 Spanner::do_space_processing ()
207 Array<Rod> rs (get_rods ());
208 for (int i=0; i < rs.size (); i++)
210 rs[i].add_to_cols ();