2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1998--2014 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"
34 #include "staff-symbol.hh"
35 #include "staff-symbol-referencer.hh"
37 #include "text-interface.hh"
41 Multi_measure_rest::bar_width (Spanner *me)
43 SCM spacing_pair = me->get_property ("spacing-pair");
45 for (LEFT_and_RIGHT (d))
47 Item *col = me->get_bound (d)->get_column ();
49 = (scm_is_pair (spacing_pair)
50 ? index_get_cell (spacing_pair, d)
51 : ly_symbol2scm ("staff-bar"));
52 Interval coldim = Paper_column::break_align_width (col, align_sym);
60 MAKE_SCHEME_CALLBACK (Multi_measure_rest, percent, 1);
62 Multi_measure_rest::percent (SCM smob)
64 Grob *me = Grob::unsmob (smob);
65 Spanner *sp = dynamic_cast<Spanner *> (me);
67 Stencil r = Percent_repeat_item_interface::x_percent (me, 1);
68 r.translate_axis (-r.extent (X_AXIS).center (), X_AXIS);
72 Grob *common_x = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT),
74 Interval sp_iv = bar_width (sp);
77 Real rx = sp->get_bound (LEFT)->relative_coordinate (common_x, X_AXIS);
79 we gotta stay clear of sp_iv, so move a bit to the right if
82 x_off += max (sp_iv[LEFT] - rx, 0.0);
87 x_off += sp_iv.length () / 2;
89 r.translate_axis (x_off, X_AXIS);
91 return r.smobbed_copy ();
94 MAKE_SCHEME_CALLBACK (Multi_measure_rest, print, 1);
96 Multi_measure_rest::print (SCM smob)
98 Grob *me = Grob::unsmob (smob);
99 Spanner *sp = dynamic_cast<Spanner *> (me);
101 Interval sp_iv = bar_width (sp);
102 Real space = sp_iv.length ();
104 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
106 we gotta stay clear of sp_iv, so move a bit to the right if
109 Real x_off = max (sp_iv[LEFT] - rx, 0.0);
112 mol.add_stencil (symbol_stencil (me, space));
114 mol.translate_axis (x_off, X_AXIS);
115 return mol.smobbed_copy ();
118 MAKE_SCHEME_CALLBACK (Multi_measure_rest, height, 1);
120 Multi_measure_rest::height (SCM smob)
122 Grob *me = Grob::unsmob (smob);
124 Real space = 1000000; // something very large...
127 mol.add_stencil (symbol_stencil (me, space));
129 return ly_interval2scm (mol.extent (Y_AXIS));
133 calc_closest_duration_log (Grob *me, double duration, bool force_round_up)
135 bool round_up = force_round_up
136 || to_boolean (me->get_property ("round-up-to-longer-rest"));
137 int closest_usable_duration_log;
139 // Out of range initial values.
141 closest_usable_duration_log = -15; // high value
143 closest_usable_duration_log = 15; // low value
144 int minimum_usable_duration_log = -15;
145 int maximum_usable_duration_log = 15;
147 SCM duration_logs_list = me->get_property ("usable-duration-logs");
148 if (to_boolean (scm_null_p (duration_logs_list))
149 || !to_boolean (scm_list_p (duration_logs_list)))
151 warning (_ ("usable-duration-logs must be a non-empty list."
152 " Falling back to whole rests."));
153 closest_usable_duration_log = 0;
157 for (SCM s = duration_logs_list; scm_is_pair (s); s = scm_cdr (s))
159 int dur_log = scm_to_int (scm_car (s));
160 if (dur_log > minimum_usable_duration_log)
161 minimum_usable_duration_log = dur_log;
162 if (dur_log < maximum_usable_duration_log)
163 maximum_usable_duration_log = dur_log;
164 double dur = pow (2.0, -dur_log);
167 if (duration <= dur && dur_log > closest_usable_duration_log)
168 closest_usable_duration_log = dur_log;
172 if (duration >= dur && dur_log < closest_usable_duration_log)
173 closest_usable_duration_log = dur_log;
178 if (closest_usable_duration_log == 15)
179 closest_usable_duration_log = minimum_usable_duration_log;
180 if (closest_usable_duration_log == -15)
181 closest_usable_duration_log = maximum_usable_duration_log;
183 return closest_usable_duration_log;
187 calc_measure_duration_log (Grob *me)
189 SCM sml = dynamic_cast<Spanner *> (me)->get_bound (LEFT)
190 ->get_property ("measure-length");
191 Rational ml = (Moment::is_smob (sml)) ? Moment::unsmob (sml)->main_part_
193 double measure_duration = ml.Rational::to_double ();
194 bool force_round_up = to_boolean (scm_list_p (scm_member (scm_cons (scm_from_int64 (ml.numerator ()),
195 scm_from_int64 (ml.denominator ())),
196 me->get_property ("round-up-exceptions"))));
197 return calc_closest_duration_log (me, measure_duration, force_round_up);
201 Multi_measure_rest::symbol_stencil (Grob *me, Real space)
203 int measure_count = 0;
204 SCM m (me->get_property ("measure-count"));
205 if (scm_is_number (m))
206 measure_count = scm_to_int (m);
207 if (measure_count <= 0)
210 SCM limit = me->get_property ("expand-limit");
211 if (measure_count > scm_to_int (limit))
214 Stencil s = big_rest (me, (1.0 - 2 * padding) * space);
215 s.translate_axis (padding * space, X_AXIS);
219 Font_metric *musfont = Font_interface::get_default_font (me);
220 int mdl = calc_measure_duration_log (me);
222 if (measure_count == 1)
224 if (me->get_property ("staff-position") == SCM_EOL)
226 int dir = get_grob_direction (me);
227 Real pos = Rest::staff_position_internal (me, mdl, dir);
228 me->set_property ("staff-position", scm_from_double (pos));
231 Stencil s = musfont->find_by_name (Rest::glyph_name (me, mdl, "", true, 0.0));
233 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
237 return church_rest (me, musfont, measure_count, space);
241 WIDTH can also be 0 to determine the minimum size of the object.
244 Multi_measure_rest::big_rest (Grob *me, Real width)
246 Real thick_thick = robust_scm2double (me->get_property ("thick-thickness"), 1.0);
247 Real hair_thick = robust_scm2double (me->get_property ("hair-thickness"), .1);
249 Real ss = Staff_symbol_referencer::staff_space (me);
250 Real slt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
251 Real y = slt * thick_thick / 2 * ss;
252 Real ythick = hair_thick * slt * ss;
253 Box b (Interval (0.0, max (0.0, (width - 2 * ythick))), Interval (-y, y));
255 Real blot = width ? (.8 * min (y, ythick)) : 0.0;
257 Stencil m = Lookup::round_filled_box (b, blot);
258 Stencil yb = Lookup::round_filled_box (Box (Interval (-0.5, 0.5) * ythick, Interval (-ss, ss)), blot);
260 m.add_at_edge (X_AXIS, RIGHT, yb, 0);
261 m.add_at_edge (X_AXIS, LEFT, yb, 0);
263 m.align_to (X_AXIS, LEFT);
272 Multi_measure_rest::church_rest (Grob *me, Font_metric *musfont, int measure_count,
276 int symbol_count = 0;
277 Real symbols_width = 0.0;
278 double total_duration = measure_count * pow (2.0, -calc_measure_duration_log (me));
280 SCM staff_position = me->get_property ("staff-position");
282 if (!scm_is_number (staff_position))
284 // Staff position is somewhat icky regarding its definition for
285 // compatibility reasons. It is intended to be the baseline of
286 // a breve rest. However, when the staff space is more than
287 // single space (like with tablature), it looks better if all
288 // rests are actually hanging. So staff position, in reality,
289 // is the semi-breve position - 2. Everything else is
290 // calculated from there.
291 int dir = get_grob_direction (me);
292 Real pos = Rest::staff_position_internal (me, 0, dir);
293 me->set_property ("staff-position", scm_from_double (pos - 2));
296 while (total_duration > 0)
298 int dl = calc_closest_duration_log (me, total_duration, false);
299 double duration = pow (2.0, -dl);
301 total_duration -= duration;
303 Stencil r = musfont->find_by_name (Rest::glyph_name (me, dl, "", true, 2));
305 Real staff_space = Staff_symbol_referencer::staff_space (me);
308 r.translate_axis (staff_space, Y_AXIS);
312 r.translate_axis (staff_space-r.extent (Y_AXIS).at (UP), Y_AXIS);
314 symbols_width += r.extent (X_AXIS).length ();
315 mols = scm_cons (r.smobbed_copy (), mols);
319 /* Make outer padding this much bigger. */
320 Real outer_padding_factor = 1.5;
321 Real inner_padding = (space - symbols_width)
322 / (2 * outer_padding_factor + (symbol_count - 1));
323 if (inner_padding < 0)
327 for (SCM s = mols; scm_is_pair (s); s = scm_cdr (s))
328 mol.add_at_edge (X_AXIS, LEFT, *Stencil::unsmob (scm_car (s)),
330 mol.align_to (X_AXIS, LEFT);
331 mol.translate_axis (outer_padding_factor * inner_padding, X_AXIS);
337 Multi_measure_rest::add_column (Grob *me, Item *c)
339 add_bound_item (dynamic_cast<Spanner *> (me), c);
343 Multi_measure_rest::calculate_spacing_rods (Grob *me, Real length)
345 Spanner *sp = dynamic_cast<Spanner *> (me);
346 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
348 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
352 Item *li = sp->get_bound (LEFT)->get_column ();
353 Item *ri = sp->get_bound (RIGHT)->get_column ();
354 Item *lb = li->find_prebroken_piece (RIGHT);
355 Item *rb = ri->find_prebroken_piece (LEFT);
357 Item *combinations[4][2] = {{li, ri},
363 for (int i = 0; i < 4; i++)
365 Item *li = combinations[i][0];
366 Item *ri = combinations[i][1];
372 rod.item_drul_[LEFT] = li;
373 rod.item_drul_[RIGHT] = ri;
375 rod.distance_ = Paper_column::minimum_distance (li, ri)
377 + 2 * robust_scm2double (me->get_property ("bound-padding"), 1.0);
379 Real minlen = robust_scm2double (me->get_property ("minimum-length"), 0);
380 rod.distance_ = max (rod.distance_, minlen);
385 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods, 1);
387 Multi_measure_rest::set_spacing_rods (SCM smob)
389 Grob *me = Grob::unsmob (smob);
390 Real sym_width = symbol_stencil (me, 0.0).extent (X_AXIS).length ();
391 calculate_spacing_rods (me, sym_width);
393 return SCM_UNSPECIFIED;
396 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_text_rods, 1);
398 Multi_measure_rest::set_text_rods (SCM smob)
400 Grob *me = Grob::unsmob (smob);
401 Stencil *stil = me->get_stencil ();
404 Real len = (stil && !stil->extent (X_AXIS).is_empty ())
405 ? stil->extent (X_AXIS).length ()
407 calculate_spacing_rods (me, len);
409 return SCM_UNSPECIFIED;
412 ADD_INTERFACE (Multi_measure_rest,
413 "A rest that spans a whole number of measures.",
421 "round-up-exceptions "
422 "round-up-to-longer-rest "
425 "usable-duration-logs "