2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1998--2015 Jan Nieuwenhuizen <janneke@gnu.org>
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 "multi-measure-rest.hh"
22 #include "directional-element-interface.hh"
23 #include "font-interface.hh"
24 #include "international.hh"
28 #include "output-def.hh"
29 #include "paper-column.hh" // urg
30 #include "percent-repeat-item.hh"
32 #include "separation-item.hh"
33 #include "spacing-options.hh"
35 #include "staff-symbol.hh"
36 #include "staff-symbol-referencer.hh"
38 #include "text-interface.hh"
42 Multi_measure_rest::bar_width (Spanner *me)
44 SCM spacing_pair = me->get_property ("spacing-pair");
46 for (LEFT_and_RIGHT (d))
48 Item *col = me->get_bound (d)->get_column ();
50 = (scm_is_pair (spacing_pair)
51 ? index_get_cell (spacing_pair, d)
52 : ly_symbol2scm ("staff-bar"));
53 Interval coldim = Paper_column::break_align_width (col, align_sym);
61 MAKE_SCHEME_CALLBACK (Multi_measure_rest, percent, 1);
63 Multi_measure_rest::percent (SCM smob)
65 Grob *me = Grob::unsmob (smob);
66 Spanner *sp = dynamic_cast<Spanner *> (me);
68 Stencil r = Percent_repeat_item_interface::x_percent (me, 1);
69 r.translate_axis (-r.extent (X_AXIS).center (), X_AXIS);
73 Grob *common_x = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT),
75 Interval sp_iv = bar_width (sp);
78 Real rx = sp->get_bound (LEFT)->relative_coordinate (common_x, X_AXIS);
80 we gotta stay clear of sp_iv, so move a bit to the right if
83 x_off += max (sp_iv[LEFT] - rx, 0.0);
88 x_off += sp_iv.length () / 2;
90 r.translate_axis (x_off, X_AXIS);
92 return r.smobbed_copy ();
95 MAKE_SCHEME_CALLBACK (Multi_measure_rest, print, 1);
97 Multi_measure_rest::print (SCM smob)
99 Grob *me = Grob::unsmob (smob);
100 Spanner *sp = dynamic_cast<Spanner *> (me);
102 Interval sp_iv = bar_width (sp);
103 Real space = sp_iv.length ();
105 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
107 we gotta stay clear of sp_iv, so move a bit to the right if
110 Real x_off = max (sp_iv[LEFT] - rx, 0.0);
113 mol.add_stencil (symbol_stencil (me, space));
115 mol.translate_axis (x_off, X_AXIS);
116 return mol.smobbed_copy ();
119 MAKE_SCHEME_CALLBACK (Multi_measure_rest, height, 1);
121 Multi_measure_rest::height (SCM smob)
123 Grob *me = Grob::unsmob (smob);
125 Real space = 1000000; // something very large...
128 mol.add_stencil (symbol_stencil (me, space));
130 return ly_interval2scm (mol.extent (Y_AXIS));
134 calc_closest_duration_log (Grob *me, double duration, bool force_round_up)
136 bool round_up = force_round_up
137 || to_boolean (me->get_property ("round-up-to-longer-rest"));
138 int closest_usable_duration_log;
140 // Out of range initial values.
142 closest_usable_duration_log = -15; // high value
144 closest_usable_duration_log = 15; // low value
145 int minimum_usable_duration_log = -15;
146 int maximum_usable_duration_log = 15;
148 SCM duration_logs_list = me->get_property ("usable-duration-logs");
149 if (to_boolean (scm_null_p (duration_logs_list))
150 || !to_boolean (scm_list_p (duration_logs_list)))
152 warning (_ ("usable-duration-logs must be a non-empty list."
153 " Falling back to whole rests."));
154 closest_usable_duration_log = 0;
158 for (SCM s = duration_logs_list; scm_is_pair (s); s = scm_cdr (s))
160 int dur_log = scm_to_int (scm_car (s));
161 if (dur_log > minimum_usable_duration_log)
162 minimum_usable_duration_log = dur_log;
163 if (dur_log < maximum_usable_duration_log)
164 maximum_usable_duration_log = dur_log;
165 double dur = pow (2.0, -dur_log);
168 if (duration <= dur && dur_log > closest_usable_duration_log)
169 closest_usable_duration_log = dur_log;
173 if (duration >= dur && dur_log < closest_usable_duration_log)
174 closest_usable_duration_log = dur_log;
179 if (closest_usable_duration_log == 15)
180 closest_usable_duration_log = minimum_usable_duration_log;
181 if (closest_usable_duration_log == -15)
182 closest_usable_duration_log = maximum_usable_duration_log;
184 return closest_usable_duration_log;
188 calc_measure_duration_log (Grob *me)
190 SCM sml = dynamic_cast<Spanner *> (me)->get_bound (LEFT)
191 ->get_property ("measure-length");
192 Rational ml = (Moment::is_smob (sml)) ? Moment::unsmob (sml)->main_part_
194 double measure_duration = ml.Rational::to_double ();
195 bool force_round_up = to_boolean (scm_list_p (scm_member (scm_cons (scm_from_int64 (ml.numerator ()),
196 scm_from_int64 (ml.denominator ())),
197 me->get_property ("round-up-exceptions"))));
198 return calc_closest_duration_log (me, measure_duration, force_round_up);
202 Multi_measure_rest::symbol_stencil (Grob *me, Real space)
204 int measure_count = 0;
205 SCM m (me->get_property ("measure-count"));
206 if (scm_is_number (m))
207 measure_count = scm_to_int (m);
208 if (measure_count <= 0)
211 SCM limit = me->get_property ("expand-limit");
212 if (measure_count > scm_to_int (limit))
215 Stencil s = big_rest (me, (1.0 - 2 * padding) * space);
216 s.translate_axis (padding * space, X_AXIS);
220 Font_metric *musfont = Font_interface::get_default_font (me);
221 int mdl = calc_measure_duration_log (me);
223 if (measure_count == 1)
225 if (me->get_property ("staff-position") == SCM_EOL)
227 int dir = get_grob_direction (me);
228 Real pos = Rest::staff_position_internal (me, mdl, dir);
229 me->set_property ("staff-position", scm_from_double (pos));
232 Stencil s = musfont->find_by_name (Rest::glyph_name (me, mdl, "", true, 0.0));
234 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
238 return church_rest (me, musfont, measure_count, space);
242 WIDTH can also be 0 to determine the minimum size of the object.
245 Multi_measure_rest::big_rest (Grob *me, Real width)
247 Real thick_thick = robust_scm2double (me->get_property ("thick-thickness"), 1.0);
248 Real hair_thick = robust_scm2double (me->get_property ("hair-thickness"), .1);
250 Real ss = Staff_symbol_referencer::staff_space (me);
251 Real slt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
252 Real y = slt * thick_thick / 2 * ss;
253 Real ythick = hair_thick * slt * ss;
254 Box b (Interval (0.0, max (0.0, (width - 2 * ythick))), Interval (-y, y));
256 Real blot = width ? (.8 * min (y, ythick)) : 0.0;
258 Stencil m = Lookup::round_filled_box (b, blot);
259 Stencil yb = Lookup::round_filled_box (Box (Interval (-0.5, 0.5) * ythick, Interval (-ss, ss)), blot);
261 m.add_at_edge (X_AXIS, RIGHT, yb, 0);
262 m.add_at_edge (X_AXIS, LEFT, yb, 0);
264 m.align_to (X_AXIS, LEFT);
273 Multi_measure_rest::church_rest (Grob *me, Font_metric *musfont, int measure_count,
277 int symbol_count = 0;
278 Real symbols_width = 0.0;
279 double total_duration = measure_count * pow (2.0, -calc_measure_duration_log (me));
281 SCM staff_position = me->get_property ("staff-position");
283 if (!scm_is_number (staff_position))
285 // Staff position is somewhat icky regarding its definition for
286 // compatibility reasons. It is intended to be the baseline of
287 // a breve rest. However, when the staff space is more than
288 // single space (like with tablature), it looks better if all
289 // rests are actually hanging. So staff position, in reality,
290 // is the semi-breve position - 2. Everything else is
291 // calculated from there.
292 int dir = get_grob_direction (me);
293 Real pos = Rest::staff_position_internal (me, 0, dir);
294 me->set_property ("staff-position", scm_from_double (pos - 2));
297 while (total_duration > 0)
299 int dl = calc_closest_duration_log (me, total_duration, false);
300 double duration = pow (2.0, -dl);
302 total_duration -= duration;
304 Stencil r = musfont->find_by_name (Rest::glyph_name (me, dl, "", true, 2));
306 Real staff_space = Staff_symbol_referencer::staff_space (me);
309 r.translate_axis (staff_space, Y_AXIS);
313 r.translate_axis (staff_space-r.extent (Y_AXIS).at (UP), Y_AXIS);
315 symbols_width += r.extent (X_AXIS).length ();
316 mols = scm_cons (r.smobbed_copy (), mols);
320 /* Make outer padding this much bigger. */
321 Real outer_padding_factor = 1.5;
322 Real inner_padding = (space - symbols_width)
323 / (2 * outer_padding_factor + (symbol_count - 1));
324 if (inner_padding < 0)
328 for (SCM s = mols; scm_is_pair (s); s = scm_cdr (s))
329 mol.add_at_edge (X_AXIS, LEFT, *Stencil::unsmob (scm_car (s)),
331 mol.align_to (X_AXIS, LEFT);
332 mol.translate_axis (outer_padding_factor * inner_padding, X_AXIS);
338 Multi_measure_rest::add_column (Grob *me, Item *c)
340 add_bound_item (dynamic_cast<Spanner *> (me), c);
344 Multi_measure_rest::calculate_spacing_rods (Grob *me, Real length)
346 Spanner *sp = dynamic_cast<Spanner *> (me);
347 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
349 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
353 Item *li = sp->get_bound (LEFT)->get_column ();
354 Item *ri = sp->get_bound (RIGHT)->get_column ();
355 Item *lb = li->find_prebroken_piece (RIGHT);
356 Item *rb = ri->find_prebroken_piece (LEFT);
358 Grob *spacing = Grob::unsmob (li->get_object ("spacing"));
360 spacing = Grob::unsmob (ri->get_object ("spacing"));
363 Spacing_options options;
364 options.init_from_grob (me);
365 Moment mlen = robust_scm2moment (li->get_property ("measure-length"),
367 length += robust_scm2double (li->get_property ("full-measure-extra-space"), 0.0)
368 + options.get_duration_space (mlen.main_part_)
369 + (robust_scm2double (me->get_property ("space-increment"), 0.0)
370 * log_2 (robust_scm2int (me->get_property ("measure-count"), 1)));
373 length += 2 * robust_scm2double (me->get_property ("bound-padding"), 0.0);
375 Real minlen = robust_scm2double (me->get_property ("minimum-length"), 0.0);
377 Item *combinations[4][2] = {{li, ri},
383 for (int i = 0; i < 4; i++)
385 Item *li = combinations[i][0];
386 Item *ri = combinations[i][1];
392 rod.item_drul_[LEFT] = li;
393 rod.item_drul_[RIGHT] = ri;
395 rod.distance_ = max (Paper_column::minimum_distance (li, ri) + length,
401 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods, 1);
403 Multi_measure_rest::set_spacing_rods (SCM smob)
405 Grob *me = Grob::unsmob (smob);
406 Real sym_width = symbol_stencil (me, 0.0).extent (X_AXIS).length ();
407 calculate_spacing_rods (me, sym_width);
409 return SCM_UNSPECIFIED;
412 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_text_rods, 1);
414 Multi_measure_rest::set_text_rods (SCM smob)
416 Grob *me = Grob::unsmob (smob);
417 Stencil *stil = me->get_stencil ();
420 Real len = (stil && !stil->extent (X_AXIS).is_empty ())
421 ? stil->extent (X_AXIS).length ()
423 calculate_spacing_rods (me, len);
425 return SCM_UNSPECIFIED;
428 ADD_INTERFACE (Multi_measure_rest,
429 "A rest that spans a whole number of measures.",
437 "round-up-exceptions "
438 "round-up-to-longer-rest "
442 "usable-duration-logs "