2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2011 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/>.
20 #include "paper-column.hh"
22 #include "axis-group-interface.hh"
23 #include "bar-line.hh"
24 #include "break-align-interface.hh"
25 #include "font-interface.hh"
26 #include "grob-array.hh"
30 #include "output-def.hh"
31 #include "paper-score.hh"
32 #include "pointer-group-interface.hh"
33 #include "rhythmic-head.hh"
34 #include "separation-item.hh"
35 #include "skyline-pair.hh"
36 #include "spaceable-grob.hh"
38 #include "string-convert.hh"
40 #include "text-interface.hh"
44 Paper_column::clone () const
46 return new Paper_column (*this);
50 Paper_column::do_break_processing ()
52 Item::do_break_processing ();
56 Paper_column::get_rank (Grob const *me)
58 return dynamic_cast<Paper_column const *> (me)->rank_;
62 Paper_column::set_rank (int rank)
68 Paper_column::get_system () const
74 Paper_column::set_system (System *s)
80 Paper_column::get_column () const
82 return (Paper_column *) (this);
85 Paper_column::Paper_column (SCM l)
92 Paper_column::Paper_column (Paper_column const &src)
100 Paper_column::compare (Grob *const &a,
103 return sign (dynamic_cast<Paper_column *> (a)->rank_
104 - dynamic_cast<Paper_column *> (b)->rank_);
108 Paper_column::less_than (Grob *const &a,
111 Paper_column *pa = dynamic_cast<Paper_column *> (a);
112 Paper_column *pb = dynamic_cast<Paper_column *> (b);
114 return pa->rank_ < pb->rank_;
118 Paper_column::when_mom (Grob *me)
120 SCM m = me->get_property ("when");
121 if (Moment *when = unsmob_moment (m))
127 Paper_column::is_musical (Grob *me)
129 SCM m = me->get_property ("shortest-starter-duration");
131 if (unsmob_moment (m))
132 s = *unsmob_moment (m);
133 return s != Moment (0);
137 Paper_column::is_used (Grob *me)
139 extract_grob_set (me, "elements", elts);
143 extract_grob_set (me, "bounded-by-me", bbm);
147 if (Paper_column::is_breakable (me))
150 if (to_boolean (me->get_property ("used")))
153 if (scm_is_pair (me->get_property ("labels")))
160 Paper_column::is_breakable (Grob *me)
162 return scm_is_symbol (me->get_property ("line-break-permission"));
166 Paper_column::minimum_distance (Grob *left, Grob *right)
168 Drul_array<Grob *> cols (left, right);
169 Drul_array<Skyline> skys = Drul_array<Skyline> (Skyline (RIGHT), Skyline (LEFT));
174 Skyline_pair *sp = Skyline_pair::unsmob (cols[d]->get_property ("horizontal-skylines"));
178 while (flip (&d) != LEFT);
180 skys[RIGHT].merge (Separation_item::conditional_skyline (right, left));
182 return max (0.0, skys[LEFT].distance (skys[RIGHT]));
186 Paper_column::break_align_width (Grob *me, SCM align_sym)
188 Grob *p = me->get_parent (X_AXIS);
192 me->programming_error ("tried to get break-align-width of a musical column");
193 return Interval (0, 0) + me->relative_coordinate (p, X_AXIS);
197 if (align_sym == ly_symbol2scm ("staff-bar")
198 || align_sym == ly_symbol2scm ("break-alignment"))
200 = Pointer_group_interface::find_grob (me, ly_symbol2scm ("elements"),
201 (align_sym == ly_symbol2scm ("staff-bar")
202 ? Bar_line::non_empty_barline
203 : Break_alignment_interface::has_interface));
206 extract_grob_set (me, "elements", elts);
207 for (vsize i = 0; i < elts.size (); i++)
209 if (elts[i]->get_property ("break-align-symbol") == align_sym)
218 return Interval (0, 0) + me->relative_coordinate (p, X_AXIS);
220 return align->extent (p, X_AXIS);
224 Print a vertical line and the rank number, to aid debugging.
226 MAKE_SCHEME_CALLBACK (Paper_column, print, 1);
228 Paper_column::print (SCM p)
230 Paper_column *me = dynamic_cast<Paper_column *> (unsmob_grob (p));
232 string r = to_string (Paper_column::get_rank (me));
234 Moment *mom = unsmob_moment (me->get_property ("when"));
235 string when = mom ? mom->to_string () : "?/?";
237 Font_metric *musfont = Font_interface::get_default_font (me);
238 SCM properties = Font_interface::text_font_alist_chain (me);
240 SCM scm_mol = Text_interface::interpret_markup (me->layout ()->self_scm (),
243 SCM when_mol = Text_interface::interpret_markup (me->layout ()->self_scm (),
245 ly_string2scm (when));
246 Stencil t = *unsmob_stencil (scm_mol);
247 t.add_at_edge (Y_AXIS, DOWN, *unsmob_stencil (when_mol), 0.1);
248 t.align_to (X_AXIS, CENTER);
249 t.align_to (Y_AXIS, DOWN);
251 Stencil l = Lookup::filled_box (Box (Interval (-0.01, 0.01),
254 SCM small_letters = scm_cons (scm_acons (ly_symbol2scm ("font-size"),
255 scm_from_int (-6), SCM_EOL),
259 for (SCM s = me->get_object ("ideal-distances");
260 scm_is_pair (s); s = scm_cdr (s))
262 Spring *sp = unsmob_spring (scm_caar (s));
263 if (!unsmob_grob (scm_cdar (s))
264 || !unsmob_grob (scm_cdar (s))->get_system ())
270 pts.push_back (Offset (0, y));
272 Offset p2 (sp->distance (), y);
275 Stencil id_stencil = Lookup::points_to_line_stencil (0.1, pts);
276 Stencil head (musfont->find_by_name ("arrowheads.open.01"));
278 SCM distance_stc = Text_interface::interpret_markup (me->layout ()->self_scm (),
280 ly_string2scm (String_convert::form_string ("%5.2lf", sp->distance ())));
282 id_stencil.add_stencil (unsmob_stencil (distance_stc)->translated (Offset (sp->distance () / 3, y + 1)));
283 id_stencil.add_stencil (head.translated (p2));
284 id_stencil = id_stencil.in_color (0, 0, 1);
285 l.add_stencil (id_stencil);
288 for (SCM s = me->get_object ("minimum-distances");
289 scm_is_pair (s); s = scm_cdr (s))
291 Real dist = scm_to_double (scm_cdar (s));
292 Grob *other = unsmob_grob (scm_caar (s));
293 if (!other || other->get_system () != me->get_system ())
298 Real y = -j * 1.0 - 3.5;
300 pts.push_back (Offset (0, y));
305 Stencil id_stencil = Lookup::points_to_line_stencil (0.1, pts);
306 Stencil head (musfont->find_by_name ("arrowheads.open.0M1"));
307 head.translate_axis (y, Y_AXIS);
308 id_stencil.add_stencil (head);
310 SCM distance_stc = Text_interface::interpret_markup (me->layout ()->self_scm (),
312 ly_string2scm (String_convert::form_string ("%5.2lf",
315 id_stencil.add_stencil (unsmob_stencil (distance_stc)->translated (Offset (dist / 3, y - 1)));
317 id_stencil = id_stencil.in_color (1, 0, 0);
318 l.add_stencil (id_stencil);
321 return t.smobbed_copy ();
325 This is all too hairy. We use bounded-by-me to make sure that some
326 columns are kept "alive". Unfortunately, when spanners are suicided,
327 this falls apart again, because suicided spanners are still in
330 THIS IS BROKEN KLUDGE. WE SHOULD INVENT SOMETHING BETTER.
332 MAKE_SCHEME_CALLBACK (Paper_column, before_line_breaking, 1);
334 Paper_column::before_line_breaking (SCM grob)
336 Grob *me = unsmob_grob (grob);
338 SCM bbm = me->get_object ("bounded-by-me");
339 Grob_array *ga = unsmob_grob_array (bbm);
341 return SCM_UNSPECIFIED;
343 vector<Grob *> &array (ga->array_reference ());
345 for (vsize i = array.size (); i--;)
349 if (!g || !g->is_live ())
350 /* UGH . potentially quadratic. */
351 array.erase (array.begin () + i);
354 return SCM_UNSPECIFIED;
357 /* FIXME: This is a hack that we use to identify columns that used to
358 contain note-heads but whose note-heads were moved by one of the ligature
359 engravers. Once the ligature engravers are fixed to behave nicely, this
360 function can be removed.
363 Paper_column::is_extraneous_column_from_ligature (Grob *me)
365 if (!is_musical (me))
368 // If all the note-heads that I think are my children actually belong
369 // to another column, then I am extraneous.
370 extract_grob_set (me, "elements", elts);
371 bool has_notehead = false;
372 for (vsize i = 0; i < elts.size (); i++)
374 if (Rhythmic_head::has_interface (elts[i]))
377 if (dynamic_cast<Item *> (elts[i])->get_column () == me)
384 ADD_INTERFACE (Paper_column,
385 "@code{Paper_column} objects form the top-most X@tie{}parents"
386 " for items. There are two types of columns: musical and"
387 " non-musical, to which musical and non-musical objects are"
388 " attached respectively. The spacing engine determines the"
389 " X@tie{}positions of these objects.\n"
391 "They are numbered, the first (leftmost) is column@tie{}0."
392 " Numbering happens before line breaking, and columns are not"
393 " renumbered after line breaking. Since many columns go"
394 " unused, you should only use the rank field to get ordering"
395 " information. Two adjacent columns may have non-adjacent"
401 "full-measure-extra-space "
404 "line-break-system-details "
405 "line-break-penalty "
406 "line-break-permission "
408 "page-break-penalty "
409 "page-break-permission "
411 "page-turn-permission "
413 "shortest-playing-duration "
414 "shortest-starter-duration "