2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1996--2012 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/>.
22 #include "align-interface.hh"
23 #include "all-font-metrics.hh"
24 #include "axis-group-interface.hh"
25 #include "break-align-interface.hh"
26 #include "grob-array.hh"
27 #include "hara-kiri-group-spanner.hh"
28 #include "international.hh"
31 #include "output-def.hh"
32 #include "page-layout-problem.hh"
33 #include "paper-column.hh"
34 #include "paper-score.hh"
35 #include "paper-system.hh"
36 #include "pointer-group-interface.hh"
37 #include "skyline-pair.hh"
38 #include "staff-symbol-referencer.hh"
39 #include "text-interface.hh"
41 #include "unpure-pure-container.hh"
43 System::System (System const &src)
52 System::System (SCM s)
61 System::init_elements ()
63 SCM scm_arr = Grob_array::make_array ();
64 all_elements_ = unsmob_grob_array (scm_arr);
65 all_elements_->set_ordered (false);
66 set_object ("all-elements", scm_arr);
70 System::clone () const
72 return new System (*this);
76 System::element_count () const
78 return all_elements_->size ();
82 System::spanner_count () const
85 for (vsize i = all_elements_->size (); i--;)
86 if (dynamic_cast<Spanner *> (all_elements_->grob (i)))
92 System::typeset_grob (Grob *elem)
95 programming_error ("adding element twice");
98 elem->layout_ = pscore_->layout ();
99 all_elements_->add (elem);
105 System::derived_mark () const
107 if (!all_elements_->empty ())
109 Grob **ptr = &all_elements_->array_reference ()[0];
110 Grob **end = ptr + all_elements_->size ();
113 scm_gc_mark ((*ptr)->self_scm ());
119 scm_gc_mark (pscore_->self_scm ());
121 Spanner::derived_mark ();
125 fixup_refpoints (vector<Grob *> const &grobs)
127 for (vsize i = grobs.size (); i--;)
128 grobs[i]->fixup_refpoint ();
132 System::do_break_substitution_and_fixup_refpoints ()
134 for (vsize i = 0; i < all_elements_->size (); i++)
136 Grob *g = all_elements_->grob (i);
137 if (g->internal_has_interface (ly_symbol2scm ("only-prebreak-interface")))
140 Kill no longer needed grobs.
142 Item *it = dynamic_cast<Item *> (g);
143 if (it && Item::is_non_musical (it))
145 it->find_prebroken_piece (LEFT)->suicide ();
146 it->find_prebroken_piece (RIGHT)->suicide ();
150 else if (g->is_live ())
151 g->do_break_processing ();
155 fixups must be done in broken line_of_scores, because new elements
156 are put over there. */
158 for (vsize i = 0; i < broken_intos_.size (); i++)
160 Grob *se = broken_intos_[i];
162 extract_grob_set (se, "all-elements", all_elts);
163 for (vsize j = 0; j < all_elts.size (); j++)
165 Grob *g = all_elts[j];
166 g->fixup_refpoint ();
169 count += all_elts.size ();
173 needed for doing items.
175 fixup_refpoints (all_elements_->array ());
177 for (vsize i = 0; i < all_elements_->size (); i++)
178 all_elements_->grob (i)->handle_broken_dependencies ();
180 handle_broken_dependencies ();
182 /* Because the this->get_property (all-elements) contains items in 3
183 versions, handle_broken_dependencies () will leave duplicated
184 items in all-elements. Strictly speaking this is harmless, but
185 it leads to duplicated symbols in the output. uniq makes sure
186 that no duplicates are in the list. */
187 for (vsize i = 0; i < broken_intos_.size (); i++)
189 System *child = dynamic_cast<System *> (broken_intos_[i]);
190 child->all_elements_->remove_duplicates ();
192 for (vsize j = 0; j < child->all_elements_->size (); j++)
194 Grob *g = child->all_elements_->grob (j);
196 (void) g->get_property ("after-line-breaking");
200 debug_output (_f ("Element count %d", count + element_count ()) + "\n");
204 System::get_broken_system_grobs ()
207 for (vsize i = 0; i < broken_intos_.size (); i++)
208 ret = scm_cons (broken_intos_[i]->self_scm (), ret);
209 return scm_reverse_x (ret, SCM_EOL);
213 System::get_paper_systems ()
215 SCM lines = scm_c_make_vector (broken_intos_.size (), SCM_EOL);
216 for (vsize i = 0; i < broken_intos_.size (); i++)
218 debug_output ("[", false);
220 System *system = dynamic_cast<System *> (broken_intos_[i]);
222 scm_vector_set_x (lines, scm_from_int (i),
223 system->get_paper_system ());
225 debug_output (to_string (i) + "]", false);
231 System::get_footnote_grobs_in_range (vsize start, vsize end)
234 extract_grob_set (this, "footnotes-before-line-breaking", footnote_grobs);
235 for (vsize i = 0; i < footnote_grobs.size (); i++)
237 Grob *at_bat = footnote_grobs[i];
238 int pos = at_bat->spanned_rank_interval ()[LEFT];
239 bool end_of_line_visible = true;
240 if (Spanner *s = dynamic_cast<Spanner *>(at_bat))
242 Direction spanner_placement = robust_scm2dir (s->get_property ("spanner-placement"), LEFT);
243 if (spanner_placement == CENTER)
244 spanner_placement = LEFT;
246 pos = s->spanned_rank_interval ()[spanner_placement];
249 Spanner *orig = dynamic_cast<Spanner *>(s->original ());
250 at_bat = spanner_placement == LEFT ? orig->broken_intos_[0] : orig->broken_intos_.back ();
251 pos = at_bat->spanned_rank_interval ()[RIGHT];
255 if (Item *item = dynamic_cast<Item *>(at_bat))
258 We use this to weed out grobs that fall at the end
259 of the line when we want grobs at the beginning.
261 end_of_line_visible = item->break_status_dir () == LEFT;
263 if (!Item::break_visible (item))
265 // safeguard to bring down the column rank so that end of line footnotes show up on the correct line
266 if (pos == int (start) && item->break_status_dir () != RIGHT)
268 if (pos == int (end) && item->break_status_dir () != LEFT)
270 if (pos != int (end) && pos != int (start) && item->break_status_dir () != CENTER)
274 if (pos < int (start))
278 if (pos == int (start) && end_of_line_visible)
280 if (pos == int (end) && !end_of_line_visible)
282 if (!at_bat->is_live ())
286 Sometimes, there are duplicate entries in the all_elements_
287 list. In a separate patch, this practice should be squashed
288 so that the check below can be eliminated.
290 if (find (out.begin (), out.end (), at_bat) != out.end ())
293 out.push_back (at_bat);
299 System::get_footnote_heights_in_range (vsize start, vsize end)
301 return internal_get_note_heights_in_range (start, end, true);
305 System::get_in_note_heights_in_range (vsize start, vsize end)
307 return internal_get_note_heights_in_range (start, end, false);
311 System::internal_get_note_heights_in_range (vsize start, vsize end, bool foot)
313 vector<Grob *> footnote_grobs = get_footnote_grobs_in_range (start, end);
316 for (vsize i = footnote_grobs.size (); i--;)
318 ? !to_boolean (footnote_grobs[i]->get_property ("footnote"))
319 : to_boolean (footnote_grobs[i]->get_property ("footnote")))
320 footnote_grobs.erase (footnote_grobs.begin () + i);
322 for (vsize i = 0; i < footnote_grobs.size (); i++)
324 SCM footnote_markup = footnote_grobs[i]->get_property ("footnote-text");
326 if (!Text_interface::is_markup (footnote_markup))
329 SCM props = scm_call_1 (ly_lily_module_constant ("layout-extract-page-properties"),
330 pscore_->layout ()->self_scm ());
332 SCM footnote_stl = Text_interface::interpret_markup (pscore_->layout ()->self_scm (),
333 props, footnote_markup);
335 Stencil *footnote_stencil = unsmob_stencil (footnote_stl);
336 out.push_back (footnote_stencil->extent (Y_AXIS).length ());
343 System::num_footnotes ()
345 extract_grob_set (this, "footnotes-after-line-breaking", footnote_grobs);
346 return footnote_grobs.size ();
350 grob_2D_less (Grob *g1, Grob *g2)
353 Grob *gs[] = {g1, g2};
355 for (int i = 0; i < 2; i++)
357 sri[i] = gs[i]->spanned_rank_interval ()[LEFT];
358 if (Spanner *s = dynamic_cast<Spanner *> (gs[i]))
360 if (s->broken_intos_.size ())
361 s = (scm_to_int (s->broken_intos_[0]->get_property ("spanner-placement")) == LEFT
362 ? s->broken_intos_[0]
363 : s->broken_intos_.back ());
365 if (robust_scm2double (s->get_property ("X-offset"), 0.0) > 0)
366 sri[i] = s->spanned_rank_interval ()[RIGHT];
370 if (sri[0] == sri[1])
371 return Grob::vertical_less (gs[0], gs[1]);
373 return sri[0] < sri[1];
376 MAKE_SCHEME_CALLBACK (System, footnotes_before_line_breaking, 1);
378 System::footnotes_before_line_breaking (SCM smob)
380 Grob *me = unsmob_grob (smob);
381 vector<Grob *> footnotes;
382 SCM grobs_scm = Grob_array::make_array ();
383 extract_grob_set (me, "all-elements", elts);
384 for (vsize i = 0; i < elts.size (); i++)
385 if (elts[i]->internal_has_interface (ly_symbol2scm ("footnote-interface")))
386 footnotes.push_back (elts[i]);
388 unsmob_grob_array (grobs_scm)->set_array (footnotes);
392 MAKE_SCHEME_CALLBACK (System, footnotes_after_line_breaking, 1);
394 System::footnotes_after_line_breaking (SCM smob)
396 Spanner *sys_span = unsmob_spanner (smob);
397 System *sys = dynamic_cast<System *> (sys_span);
398 Interval_t<int> sri = sys->spanned_rank_interval ();
399 vector<Grob *> footnote_grobs = sys->get_footnote_grobs_in_range (sri[LEFT], sri[RIGHT]);
400 vector_sort (footnote_grobs, grob_2D_less);
402 SCM grobs_scm = Grob_array::make_array ();
403 unsmob_grob_array (grobs_scm)->set_array (footnote_grobs);
408 System::break_into_pieces (vector<Column_x_positions> const &breaking)
410 for (vsize i = 0; i < breaking.size (); i++)
412 System *system = dynamic_cast<System *> (clone ());
413 system->rank_ = broken_intos_.size ();
415 vector<Grob *> c (breaking[i].cols_);
416 pscore_->typeset_system (system);
418 int st = Paper_column::get_rank (c[0]);
419 int end = Paper_column::get_rank (c.back ());
420 Interval iv (pure_height (this, st, end));
421 system->set_property ("pure-Y-extent", ly_interval2scm (iv));
423 system->set_bound (LEFT, c[0]);
424 system->set_bound (RIGHT, c.back ());
425 SCM system_labels = SCM_EOL;
426 for (vsize j = 0; j < c.size (); j++)
428 c[j]->translate_axis (breaking[i].config_[j], X_AXIS);
429 dynamic_cast<Paper_column *> (c[j])->set_system (system);
430 /* collect the column labels */
431 collect_labels (c[j], &system_labels);
434 Collect labels from any loose columns too: theses will be set on
435 an empty bar line or a column which is otherwise unused mid-line
437 vector<Grob *> loose (breaking[i].loose_cols_);
438 for (vsize j = 0; j < loose.size (); j++)
439 collect_labels (loose[j], &system_labels);
441 system->set_property ("labels", system_labels);
443 set_loose_columns (system, &breaking[i]);
444 broken_intos_.push_back (system);
449 System::collect_labels (Grob const *col, SCM *labels)
451 SCM col_labels = col->get_property ("labels");
452 if (scm_is_pair (col_labels))
453 *labels = scm_append (scm_list_2 (col_labels, *labels));
457 System::add_column (Paper_column *p)
460 Grob_array *ga = unsmob_grob_array (me->get_object ("columns"));
463 SCM scm_ga = Grob_array::make_array ();
464 me->set_object ("columns", scm_ga);
465 ga = unsmob_grob_array (scm_ga);
468 p->set_rank (ga->size ());
471 Axis_group_interface::add_element (this, p);
475 System::pre_processing ()
477 for (vsize i = 0; i < all_elements_->size (); i++)
478 all_elements_->grob (i)->discretionary_processing ();
480 debug_output (_f ("Grob count %d", element_count ()));
483 order is significant: broken grobs are added to the end of the
484 array, and should be processed before the original is potentially
487 for (vsize i = all_elements_->size (); i--;)
488 all_elements_->grob (i)->handle_prebroken_dependencies ();
490 fixup_refpoints (all_elements_->array ());
492 for (vsize i = 0; i < all_elements_->size (); i++)
494 Grob *g = all_elements_->grob (i);
495 (void) g->get_property ("before-line-breaking");
498 for (vsize i = 0; i < all_elements_->size (); i++)
500 Grob *e = all_elements_->grob (i);
501 (void) e->get_property ("springs-and-rods");
506 System::post_processing ()
508 Interval iv (extent (this, Y_AXIS));
510 programming_error ("system with empty extent");
512 translate_axis (-iv[MAX], Y_AXIS);
514 /* Generate all stencils to trigger font loads.
515 This might seem inefficient, but Stencils are cached per grob
518 vector<Grob *> all_elts_sorted (all_elements_->array ());
519 vector_sort (all_elts_sorted, std::less<Grob *> ());
520 uniq (all_elts_sorted);
521 this->get_stencil ();
522 for (vsize i = all_elts_sorted.size (); i--;)
524 Grob *g = all_elts_sorted[i];
536 operator < (Layer_entry const &a,
537 Layer_entry const &b)
539 return a.layer_ < b.layer_;
543 System::get_paper_system ()
550 vector<Layer_entry> entries;
551 for (vsize j = 0; j < all_elements_->size (); j++)
554 e.grob_ = all_elements_->grob (j);
555 e.layer_ = robust_scm2int (e.grob_->get_property ("layer"), 1);
557 entries.push_back (e);
560 vector_sort (entries, std::less<Layer_entry> ());
561 for (vsize j = 0; j < entries.size (); j++)
563 Grob *g = entries[j].grob_;
564 Stencil st = g->get_print_stencil ();
566 if (st.expr () == SCM_EOL)
570 for (int a = X_AXIS; a < NO_AXES; a++)
571 o[Axis (a)] = g->relative_coordinate (this, Axis (a));
573 Offset extra = robust_scm2offset (g->get_property ("extra-offset"),
575 * Staff_symbol_referencer::staff_space (g);
577 /* Must copy the stencil, for we cannot change the stencil
580 st.translate (o + extra);
582 *tail = scm_cons (st.expr (), SCM_EOL);
583 tail = SCM_CDRLOC (*tail);
586 if (Stencil *me = get_stencil ())
587 exprs = scm_cons (me->expr (), exprs);
589 Interval x (extent (this, X_AXIS));
590 Interval y (extent (this, Y_AXIS));
591 Stencil sys_stencil (Box (x, y),
592 scm_cons (ly_symbol2scm ("combine-stencil"),
596 Skyline_pair *skylines = Skyline_pair::unsmob (get_property ("vertical-skylines"));
600 = Lookup::points_to_line_stencil (0.1, (*skylines)[UP].to_points (X_AXIS));
602 = Lookup::points_to_line_stencil (0.1, (*skylines)[DOWN].to_points (X_AXIS));
603 sys_stencil.add_stencil (up.in_color (255, 0, 0));
604 sys_stencil.add_stencil (down.in_color (0, 255, 0));
608 Grob *left_bound = this->get_bound (LEFT);
609 SCM prop_init = left_bound->get_property ("line-break-system-details");
610 Prob *pl = make_paper_system (prop_init);
611 paper_system_set_stencil (pl, sys_stencil);
613 /* information that the page breaker might need */
614 Grob *right_bound = this->get_bound (RIGHT);
615 pl->set_property ("vertical-skylines", this->get_property ("vertical-skylines"));
616 pl->set_property ("page-break-permission", right_bound->get_property ("page-break-permission"));
617 pl->set_property ("page-turn-permission", right_bound->get_property ("page-turn-permission"));
618 pl->set_property ("page-break-penalty", right_bound->get_property ("page-break-penalty"));
619 pl->set_property ("page-turn-penalty", right_bound->get_property ("page-turn-penalty"));
621 if (right_bound->original () == dynamic_cast<System *> (original ())->get_bound (RIGHT))
622 pl->set_property ("last-in-score", SCM_BOOL_T);
624 Interval staff_refpoints;
625 if (Grob *align = get_vertical_alignment ())
627 extract_grob_set (align, "elements", staves);
628 for (vsize i = 0; i < staves.size (); i++)
629 if (staves[i]->is_live ()
630 && Page_layout_problem::is_spaceable (staves[i]))
631 staff_refpoints.add_point (staves[i]->relative_coordinate (this,
635 pl->set_property ("staff-refpoint-extent", ly_interval2scm (staff_refpoints));
636 pl->set_property ("system-grob", this->self_scm ());
638 return pl->unprotect ();
642 System::broken_col_range (Item const *left, Item const *right) const
646 left = left->get_column ();
647 right = right->get_column ();
649 extract_grob_set (this, "columns", cols);
651 vsize i = Paper_column::get_rank (left);
652 int end_rank = Paper_column::get_rank (right);
653 if (i < cols.size ())
656 while (i < cols.size ()
657 && Paper_column::get_rank (cols[i]) < end_rank)
659 Paper_column *c = dynamic_cast<Paper_column *> (cols[i]);
660 if (Paper_column::is_breakable (c) && !c->get_system ())
668 /** Return all columns, but filter out any unused columns , since they might
669 disrupt the spacing problem. */
671 System::used_columns () const
673 extract_grob_set (this, "columns", ro_columns);
675 int last_breakable = ro_columns.size ();
677 while (last_breakable--)
679 if (Paper_column::is_breakable (ro_columns [last_breakable]))
683 vector<Grob *> columns;
684 for (int i = 0; i <= last_breakable; i++)
686 if (Paper_column::is_used (ro_columns[i]))
687 columns.push_back (ro_columns[i]);
694 System::column (vsize which) const
696 extract_grob_set (this, "columns", columns);
697 if (which >= columns.size ())
700 return dynamic_cast<Paper_column *> (columns[which]);
704 System::paper_score () const
710 System::get_rank () const
716 get_root_system (Grob *me)
718 Grob *system_grob = me;
720 while (system_grob->get_parent (Y_AXIS))
721 system_grob = system_grob->get_parent (Y_AXIS);
723 return dynamic_cast<System *> (system_grob);
727 System::get_vertical_alignment ()
729 extract_grob_set (this, "elements", elts);
731 for (vsize i = 0; i < elts.size (); i++)
732 if (Align_interface::has_interface (elts[i]))
735 programming_error ("found multiple vertical alignments in this system");
740 programming_error ("didn't find a vertical alignment in this system");
744 // Finds the furthest staff in the given direction whose x-extent
745 // overlaps with the given interval.
747 System::get_extremal_staff (Direction dir, Interval const &iv)
749 Grob *align = get_vertical_alignment ();
753 extract_grob_set (align, "elements", elts);
754 vsize start = (dir == UP) ? 0 : elts.size () - 1;
755 vsize end = (dir == UP) ? elts.size () : VPOS;
756 for (vsize i = start; i != end; i += dir)
758 if (Hara_kiri_group_spanner::has_interface (elts[i]))
759 Hara_kiri_group_spanner::consider_suicide (elts[i]);
761 Interval intersection = elts[i]->extent (this, X_AXIS);
762 intersection.intersect (iv);
763 if (elts[i]->is_live () && !intersection.is_empty ())
769 // Finds the neighboring staff in the given direction over bounds
771 System::get_neighboring_staff (Direction dir, Grob *vertical_axis_group, Interval_t<int> bounds)
773 Grob *align = get_vertical_alignment ();
777 extract_grob_set (align, "elements", elts);
778 vsize start = (dir == UP) ? 0 : elts.size () - 1;
779 vsize end = (dir == UP) ? elts.size () : VPOS;
783 for (vsize i = start; i != end; i += dir)
785 if (elts[i] == vertical_axis_group)
788 if (Hara_kiri_group_spanner::has_interface (elts[i]))
789 Hara_kiri_group_spanner::consider_suicide (elts[i]);
791 bounds.intersect (elts[i]->spanned_rank_interval ());
792 if (elts[i]->is_live () && !bounds.is_empty ())
800 System::pure_refpoint_extent (vsize start, vsize end)
803 Grob *alignment = get_vertical_alignment ();
807 extract_grob_set (alignment, "elements", staves);
808 vector<Real> offsets = Align_interface::get_pure_minimum_translations (alignment, staves, Y_AXIS, start, end);
810 for (vsize i = 0; i < offsets.size (); ++i)
811 if (Page_layout_problem::is_spaceable (staves[i]))
813 ret[UP] = offsets[i];
817 for (vsize i = offsets.size (); i--;)
818 if (Page_layout_problem::is_spaceable (staves[i]))
820 ret[DOWN] = offsets[i];
828 System::part_of_line_pure_height (vsize start, vsize end, bool begin)
830 Grob *alignment = get_vertical_alignment ();
834 extract_grob_set (alignment, "elements", staves);
835 vector<Real> offsets = Align_interface::get_pure_minimum_translations (alignment, staves, Y_AXIS, start, end);
838 for (vsize i = 0; i < staves.size (); ++i)
841 ? Axis_group_interface::begin_of_line_pure_height (staves[i], start)
842 : Axis_group_interface::rest_of_line_pure_height (staves[i], start, end);
843 if (i < offsets.size ())
844 iv.translate (offsets[i]);
848 Interval other_elements = begin
849 ? Axis_group_interface::begin_of_line_pure_height (this, start)
850 : Axis_group_interface::rest_of_line_pure_height (this, start, end);
852 ret.unite (other_elements);
858 System::begin_of_line_pure_height (vsize start, vsize end)
860 return part_of_line_pure_height (start, end, true);
864 System::rest_of_line_pure_height (vsize start, vsize end)
866 return part_of_line_pure_height (start, end, false);
869 // This differs from Axis_group_interface::calc_pure_relevant_grobs
870 // because here, we are only interested in those few elements that aren't
871 // descended from VerticalAlignment (ie. things like RehearsalMark, BarLine).
872 MAKE_SCHEME_CALLBACK (System, calc_pure_relevant_grobs, 1);
874 System::calc_pure_relevant_grobs (SCM smob)
876 Grob *me = unsmob_grob (smob);
878 extract_grob_set (me, "elements", elts);
879 vector<Grob *> relevant_grobs;
880 SCM pure_relevant_p = ly_lily_module_constant ("pure-relevant?");
882 for (vsize i = 0; i < elts.size (); ++i)
884 if (!Axis_group_interface::has_interface (elts[i]))
886 if (to_boolean (scm_apply_1 (pure_relevant_p, elts[i]->self_scm (), SCM_EOL)))
887 relevant_grobs.push_back (elts[i]);
889 if (Item *it = dynamic_cast<Item *> (elts[i]))
891 for (LEFT_and_RIGHT (d))
893 Item *piece = it->find_prebroken_piece (d);
894 if (piece && to_boolean (scm_apply_1 (pure_relevant_p, piece->self_scm (), SCM_EOL)))
895 relevant_grobs.push_back (piece);
901 SCM grobs_scm = Grob_array::make_array ();
903 unsmob_grob_array (grobs_scm)->set_array (relevant_grobs);
907 MAKE_SCHEME_CALLBACK (System, height, 1);
909 System::height (SCM smob)
911 return Axis_group_interface::height (smob);
914 MAKE_SCHEME_CALLBACK (System, calc_pure_height, 3);
916 System::calc_pure_height (SCM smob, SCM start_scm, SCM end_scm)
918 System *me = dynamic_cast<System *> (unsmob_grob (smob));
919 int start = scm_to_int (start_scm);
920 int end = scm_to_int (end_scm);
922 Interval begin = me->begin_of_line_pure_height (start, end);
923 Interval rest = me->rest_of_line_pure_height (start, end);
926 return ly_interval2scm (begin);
930 System::get_pure_bound (Direction d, int start, int end)
932 vector<vsize> ranks = pscore_->get_break_ranks ();
933 vector<vsize> indices = pscore_->get_break_indices ();
934 vector<Grob *> cols = pscore_->get_columns ();
936 vsize target_rank = (d == LEFT ? start : end);
937 vector<vsize>::const_iterator i
938 = lower_bound (ranks.begin (), ranks.end (), target_rank, std::less<vsize> ());
940 if (i != ranks.end () && (*i) == target_rank)
941 return cols[indices[i - ranks.begin ()]];
947 System::get_maybe_pure_bound (Direction d, bool pure, int start, int end)
949 return pure ? get_pure_bound (d, start, end) : get_bound (d);
960 get_maybe_spaceable_staves (SCM smob, int filter)
962 System *me = dynamic_cast<System *> (unsmob_grob (smob));
963 Grob *align = me->get_vertical_alignment ();
969 extract_grob_set (align, "elements", staves);
971 for (vsize i = 0; i < staves.size (); ++i)
973 bool spaceable = Page_layout_problem::is_spaceable (staves[i]);
974 if (staves[i]->is_live ()
975 && ((filter == ALL_STAVES)
976 || (filter == SPACEABLE_STAVES && spaceable)
977 || (filter == NONSPACEABLE_STAVES && !spaceable)))
979 *tail = scm_cons (staves[i]->self_scm (), SCM_EOL);
980 tail = SCM_CDRLOC (*tail);
988 MAKE_SCHEME_CALLBACK (System, get_staves, 1)
990 System::get_staves (SCM smob)
992 return get_maybe_spaceable_staves (smob, ALL_STAVES);
995 MAKE_SCHEME_CALLBACK (System, get_spaceable_staves, 1)
997 System::get_spaceable_staves (SCM smob)
999 return get_maybe_spaceable_staves (smob, SPACEABLE_STAVES);
1002 MAKE_SCHEME_CALLBACK (System, get_nonspaceable_staves, 1)
1004 System::get_nonspaceable_staves (SCM smob)
1006 return get_maybe_spaceable_staves (smob, NONSPACEABLE_STAVES);
1009 ADD_INTERFACE (System,
1010 "This is the top-level object: Each object in a score"
1011 " ultimately has a @code{System} object as its X and"
1018 "footnotes-before-line-breaking "
1019 "footnotes-after-line-breaking "
1020 "in-note-direction "
1025 "skyline-horizontal-padding "