2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2005--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
21 #include "paper-column.hh"
22 #include "column-x-positions.hh"
23 #include "pointer-group-interface.hh"
24 #include "staff-spacing.hh"
25 #include "note-spacing.hh"
26 #include "spacing-spanner.hh"
29 #include "spacing-options.hh"
31 /* Find the loose columns in POSNS, and drape them around the columns
32 specified in BETWEEN-COLS. */
34 set_loose_columns (System *which, Column_x_positions const *posns)
36 int loose_col_count = posns->loose_cols_.size ();
40 for (int i = 0; i < loose_col_count; i++)
43 Item *loose = dynamic_cast<Item *> (posns->loose_cols_[i]);
44 Paper_column *col = dynamic_cast<Paper_column *> (loose);
46 if (col->get_system ())
55 SCM between = loose->get_object ("between-cols");
56 if (!scm_is_pair (between))
59 Item *le = dynamic_cast<Item *> (unsmob_grob (scm_car (between)));
60 Item *re = dynamic_cast<Item *> (unsmob_grob (scm_cdr (between)));
67 left = le->get_column ();
68 if (!left->get_system ())
69 left = left->find_prebroken_piece (RIGHT);
71 clique.push_back (left);
74 clique.push_back (loose);
77 loose = right = re->get_column ();
80 if (right->get_system ())
82 else if (right->find_prebroken_piece (LEFT)
83 && right->find_prebroken_piece (LEFT)->get_system () == which)
84 right = right->find_prebroken_piece (LEFT);
85 else if (Paper_column::get_rank (which->get_bound (RIGHT)) < Paper_column::get_rank (right))
87 right = which->get_bound (RIGHT);
90 clique.back ()->programming_error ("Loose column does not have right side to attach to.");
91 System *base_system = dynamic_cast<System*> (which->original ());
92 int j = Paper_column::get_rank (clique.back ()) + 1;
93 int end_rank = Paper_column::get_rank (which->get_bound (RIGHT));
94 extract_grob_set (base_system, "columns", base_cols);
95 for (; j < end_rank; j++)
97 if (base_cols[j]->get_system () == which)
98 right = dynamic_cast<Item*> ((Grob*)base_cols[j]);
105 programming_error ("Can't attach loose column sensibly. Attaching to end of system.");
106 right = which->get_bound (RIGHT);
108 Grob *common = right->common_refpoint (left, X_AXIS);
110 clique.push_back (right);
112 vector<Real> clique_spacing;
113 clique_spacing.push_back (0.0);
114 for (vsize j = 1; j + 1 < clique.size (); j ++)
116 Grob *clique_col = clique[j];
118 Paper_column *loose_col = dynamic_cast<Paper_column *> (clique[j]);
119 Paper_column *next_col = dynamic_cast<Paper_column *> (clique[j + 1]);
121 Grob *spacing = unsmob_grob (clique_col->get_object ("spacing"));
122 if (Grob *grace_spacing = unsmob_grob (clique_col->get_object ("grace-spacing")))
124 spacing = grace_spacing;
127 Spacing_options options;
129 options.init_from_grob (spacing);
131 programming_error ("Column without spacing object");
133 Real base_note_space = 0.0;
135 if (Paper_column::is_musical (next_col)
136 && Paper_column::is_musical (loose_col))
137 base_note_space = Spacing_spanner::note_spacing (spacing, loose_col, next_col,
141 Spring spring = Spacing_spanner::standard_breakable_column_spacing (spacing,
145 base_note_space = spring.distance ();
148 base_note_space = max (base_note_space,
149 robust_relative_extent (loose_col, loose_col, X_AXIS)[RIGHT]
150 - robust_relative_extent (next_col, next_col, X_AXIS)[LEFT]);
152 clique_spacing.push_back (base_note_space);
155 Real default_padding = 1.0;
156 clique_spacing.push_back (default_padding);
158 Real right_point = robust_relative_extent (clique.back (), common, X_AXIS)[LEFT];
161 Grob *finished_right_column = clique.back ();
163 for (vsize j = clique.size () - 2; j > 0; j--)
165 Paper_column *clique_col = dynamic_cast<Paper_column *> (clique[j]);
167 right_point = finished_right_column->relative_coordinate (common, X_AXIS);
169 Real distance_to_next = clique_spacing[j];
171 Real my_offset = right_point - distance_to_next;
173 clique_col->set_system (which);
174 clique_col->translate_axis (my_offset - clique_col->relative_coordinate (common, X_AXIS), X_AXIS);
176 finished_right_column = clique_col;