2 dot-column.cc -- implement Dot_column
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "dot-column.hh"
17 #include "rhythmic-head.hh"
18 #include "staff-symbol-referencer.hh"
19 #include "directional-element-interface.hh"
20 #include "side-position-interface.hh"
21 #include "axis-group-interface.hh"
23 #include "pointer-group-interface.hh"
26 TODO: let Dot_column communicate with stem via Note_column.
29 MAKE_SCHEME_CALLBACK (Dot_column, side_position, 1);
31 Dot_column::side_position (SCM smob)
33 Grob *me = unsmob_grob (smob);
34 extract_grob_set (me, "dots", dots);
36 for (vsize i = 0; i < dots.size (); i++)
38 Grob *head = dots[i]->get_parent (Y_AXIS);
39 Grob *stem = head ? unsmob_grob (head->get_object ("stem")) : 0;
41 && !Stem::get_beam (stem)
42 && Stem::duration_log (stem) > 2
43 && !Stem::is_invisible (stem))
46 trigger stem end & direction calculation.
48 This will add the stem to the support if a flag collision happens.
50 stem->get_property ("stem-end-position");
54 return Side_position_interface::x_aligned_side (smob, SCM_EOL);
69 extremal_head_ = false;
73 typedef map<int, Dot_position> Dot_configuration;
79 dot_config_badness (Dot_configuration const &cfg)
82 for (Dot_configuration::const_iterator i (cfg.begin ());
86 int demerit = sqr (p - i->second.pos_) * 2;
88 int dot_move_dir = sign (p - i->second.pos_);
89 if (i->second.extremal_head_)
92 && dot_move_dir != i->second.dir_)
94 else if (dot_move_dir != UP)
97 else if (dot_move_dir != UP)
107 print_dot_configuration (Dot_configuration const &cfg)
109 printf ("dotconf { ");
110 for (Dot_configuration::const_iterator i (cfg.begin ());
111 i != cfg.end (); i++)
112 printf ("%d, ", i->first);
117 Shift K and following (preceding) entries up (down) as necessary to
118 prevent staffline collisions if D is up (down).
120 If K is in CFG, then do nothing.
124 shift_one (Dot_configuration const &cfg,
127 Dot_configuration new_cfg;
132 for (Dot_configuration::const_iterator i (cfg.begin ());
133 i != cfg.end (); i++)
138 if (Staff_symbol_referencer::on_line (i->second.dot_, p))
145 new_cfg[p] = i->second;
149 if (new_cfg.find (p) == new_cfg.end ())
151 new_cfg[p + offset] = i->second;
157 Dot_configuration::const_iterator i (cfg.end ());
165 if (Staff_symbol_referencer::on_line (i->second.dot_, p))
172 new_cfg[p] = i->second;
176 if (new_cfg.find (p) == new_cfg.end ())
179 new_cfg[p + offset] = i->second;
182 while (i != cfg.begin ());
189 Remove the collision in CFG either by shifting up or down, whichever
193 remove_collision (Dot_configuration &cfg, int p)
195 bool collide = cfg.find (p) != cfg.end ();
199 Dot_configuration cfg_up = shift_one (cfg, p, UP);
200 Dot_configuration cfg_down = shift_one (cfg, p, DOWN);
202 int b_up = dot_config_badness (cfg_up);
203 int b_down = dot_config_badness (cfg_down);
205 cfg = (b_up < b_down) ? cfg_up : cfg_down;
209 MAKE_SCHEME_CALLBACK(Dot_column, calc_positioning_done, 1);
211 Dot_column::calc_positioning_done (SCM smob)
213 Grob *me = unsmob_grob (smob);
215 = extract_grob_array (me, "dots");
218 Trigger note collision resolution first, since that may kill off
222 for (vsize i = dots.size (); i--;)
224 Grob *n = dots[i]->get_parent (Y_AXIS);
226 c = n->common_refpoint (c, X_AXIS);
230 for (vsize i = dots.size (); i--;)
232 Grob *n = dots[i]->get_parent (Y_AXIS);
233 n->relative_coordinate (c, X_AXIS);
237 vector_sort (dots, position_less);
238 for (vsize i = dots.size (); i--;)
239 if (!dots[i]->is_live ())
240 dots.erase (dots.begin () + i);
242 Dot_configuration cfg;
243 for (vsize i = 0;i < dots.size (); i++)
248 Grob *note = dots[i]->get_parent (Y_AXIS);
251 Grob *stem = unsmob_grob (note->get_object ("stem"));
253 dp.extremal_head_ = Stem::first_head (stem) == note;
256 int p = Staff_symbol_referencer::get_rounded_position (dp.dot_);
259 if (dp.extremal_head_)
260 dp.dir_ = to_dir (dp.dot_->get_property ("direction"));
262 remove_collision (cfg, p);
264 if (Staff_symbol_referencer::on_line (dp.dot_, p))
265 remove_collision (cfg, p);
268 for (Dot_configuration::const_iterator i (cfg.begin ());
269 i != cfg.end (); i++)
274 Staff_symbol_referencer::set_position (i->second.dot_, i->first);
280 Dot_column::add_head (Grob *me, Grob *rh)
282 Grob *d = unsmob_grob (rh->get_object ("dot"));
285 Side_position_interface::add_support (me, rh);
287 Pointer_group_interface::add_grob (me, ly_symbol2scm ("dots"), d);
288 d->set_property ("Y-offset", Grob::x_parent_positioning_proc);
289 Axis_group_interface::add_element (me, d);
293 ADD_INTERFACE (Dot_column,
294 "dot-column-interface",
296 "Groups dot objects so they form a column, and position dots so they do not "
297 "clash with staff lines ",