2 multi-measure-rest.cc -- implement Multi_measure_rest
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2007 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "multi-measure-rest.hh"
12 #include "output-def.hh"
13 #include "paper-column.hh" // urg
14 #include "font-interface.hh"
18 #include "staff-symbol-referencer.hh"
19 #include "text-interface.hh"
20 #include "percent-repeat-item.hh"
22 #include "separation-item.hh"
24 MAKE_SCHEME_CALLBACK (Multi_measure_rest, percent, 1);
26 Multi_measure_rest::percent (SCM smob)
28 Grob *me = unsmob_grob (smob);
29 Spanner *sp = dynamic_cast<Spanner *> (me);
31 Stencil r = Percent_repeat_item_interface::x_percent (me, 1, 0.75, 1.6);
35 Grob *common_x = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT),
41 Item *col = sp->get_bound (d)->get_column ();
43 Interval coldim = robust_relative_extent (col, common_x, X_AXIS);
45 sp_iv[d] = coldim[-d];
47 while ((flip (&d)) != LEFT);
50 Real rx = sp->get_bound (LEFT)->relative_coordinate (common_x, X_AXIS);
52 we gotta stay clear of sp_iv, so move a bit to the right if
55 x_off += max (sp_iv[LEFT] - rx, 0.0);
60 x_off += sp_iv.length () / 2;
62 r.translate_axis (x_off, X_AXIS);
64 return r.smobbed_copy ();
67 MAKE_SCHEME_CALLBACK (Multi_measure_rest, print, 1);
69 Multi_measure_rest::print (SCM smob)
71 Grob *me = unsmob_grob (smob);
72 Spanner *sp = dynamic_cast<Spanner *> (me);
77 Grob *common = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
80 Item *b = sp->get_bound (d);
82 Interval coldim = (Separation_item::has_interface (b))
83 ? Separation_item::relative_width (b, common)
84 : b->extent (common, X_AXIS);
86 sp_iv[d] = coldim.is_empty () ? b->relative_coordinate (common, X_AXIS) : coldim[-d];
88 while ((flip (&d)) != LEFT);
90 Real space = sp_iv.length ();
92 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
94 we gotta stay clear of sp_iv, so move a bit to the right if
97 Real x_off = max (sp_iv[LEFT] - rx, 0.0);
100 mol.add_stencil (symbol_stencil (me, space));
103 SCM m (me->get_property ("measure-count"));
104 if (scm_is_number (m))
105 measures = scm_to_int (m);
107 mol.translate_axis (x_off, X_AXIS);
108 return mol.smobbed_copy ();
112 Multi_measure_rest::symbol_stencil (Grob *me, Real space)
115 SCM m (me->get_property ("measure-count"));
116 if (scm_is_number (m))
117 measures = scm_to_int (m);
121 SCM limit = me->get_property ("expand-limit");
122 if (measures > scm_to_int (limit))
125 Stencil s = big_rest (me, (1.0 - 2 * padding) * space);
126 s.translate_axis (padding * space, X_AXIS);
130 SCM alist_chain = Font_interface::music_font_alist_chain (me);
132 Real staff_space = Staff_symbol_referencer::staff_space (me);
134 = select_font (me->layout (), alist_chain);
136 SCM sml = me->get_property ("use-breve-rest");
139 if (to_boolean (sml))
141 Stencil s = musfont->find_by_name (Rest::glyph_name (me, -1, "", false));
143 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
149 Stencil s = musfont->find_by_name (Rest::glyph_name (me, 0, "", true));
154 if (Staff_symbol_referencer::get_position (me) == 0.0)
155 s.translate_axis (staff_space, Y_AXIS);
157 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
163 return church_rest (me, musfont, measures, space);
167 WIDTH can also be 0 to determine the minimum size of the object.
170 Multi_measure_rest::big_rest (Grob *me, Real width)
172 Real thick_thick = robust_scm2double (me->get_property ("thick-thickness"), 1.0);
173 Real hair_thick = robust_scm2double (me->get_property ("hair-thickness"), .1);
175 Real ss = Staff_symbol_referencer::staff_space (me);
176 Real slt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
177 Real y = slt * thick_thick / 2 * ss;
178 Real ythick = hair_thick * slt * ss;
179 Box b (Interval (0.0, max (0.0, (width - 2 * ythick))), Interval (-y, y));
181 Real blot = width ? (.8 * min (y, ythick)) : 0.0;
183 Stencil m = Lookup::round_filled_box (b, blot);
184 Stencil yb = Lookup::round_filled_box (Box (Interval (-0.5, 0.5) * ythick, Interval (-ss, ss)), blot);
186 m.add_at_edge (X_AXIS, RIGHT, yb, 0);
187 m.add_at_edge (X_AXIS, LEFT, yb, 0);
189 m.align_to (X_AXIS, LEFT);
198 Multi_measure_rest::church_rest (Grob *me, Font_metric *musfont, int measures,
203 /* See Wanske pp. 125 */
206 Real symbols_width = 0.0;
208 bool use_breve = to_boolean (me->get_property ("use-breve-rest"));
226 Stencil r (musfont->find_by_name ("rests." + to_string (k)));
227 symbols_width += r.extent (X_AXIS).length ();
228 mols = scm_cons (r.smobbed_copy (), mols);
249 Stencil r (musfont->find_by_name ("rests." + to_string (k)));
252 Real staff_space = Staff_symbol_referencer::staff_space (me);
253 r.translate_axis (staff_space, Y_AXIS);
255 symbols_width += r.extent (X_AXIS).length ();
256 mols = scm_cons (r.smobbed_copy (), mols);
261 /* Make outer padding this much bigger. */
262 Real outer_padding_factor = 1.5;
263 Real inner_padding = (space - symbols_width)
264 / (2 * outer_padding_factor + (count - 1));
265 if (inner_padding < 0)
269 for (SCM s = mols; scm_is_pair (s); s = scm_cdr (s))
270 mol.add_at_edge (X_AXIS, LEFT, *unsmob_stencil (scm_car (s)),
272 mol.align_to (X_AXIS, LEFT);
273 mol.translate_axis (outer_padding_factor * inner_padding, X_AXIS);
279 Multi_measure_rest::add_column (Grob *me, Item *c)
281 add_bound_item (dynamic_cast<Spanner *> (me), c);
285 Multi_measure_rest::calculate_spacing_rods (Grob *me, Real length)
287 Spanner *sp = dynamic_cast<Spanner *> (me);
288 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
290 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
294 Item *li = sp->get_bound (LEFT)->get_column ();
295 Item *ri = sp->get_bound (RIGHT)->get_column ();
296 Item *lb = li->find_prebroken_piece (RIGHT);
297 Item *rb = ri->find_prebroken_piece (LEFT);
299 Item *combinations[4][2] = {{li, ri},
304 for (int i = 0; i < 4; i++)
306 Item *li = combinations[i][0];
307 Item *ri = combinations[i][1];
313 rod.item_drul_[LEFT] = li;
314 rod.item_drul_[RIGHT] = ri;
316 rod.distance_ = li->extent (li, X_AXIS)[BIGGER]
317 - ri->extent (ri, X_AXIS)[SMALLER]
319 + 2 * robust_scm2double (me->get_property ("bound-padding"), 1.0);
321 Real minlen = robust_scm2double (me->get_property ("minimum-length"), 0);
322 rod.distance_ = max (rod.distance_, minlen);
327 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods, 1);
329 Multi_measure_rest::set_spacing_rods (SCM smob)
331 Grob *me = unsmob_grob (smob);
332 Real sym_width = symbol_stencil (me, 0.0).extent (X_AXIS).length ();
333 calculate_spacing_rods (me, sym_width);
335 return SCM_UNSPECIFIED;
338 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_text_rods, 1);
340 Multi_measure_rest::set_text_rods (SCM smob)
342 Grob *me = unsmob_grob (smob);
343 Stencil *stil = me->get_stencil ();
346 Real len = (stil && !stil->extent (X_AXIS).is_empty ())
347 ? stil->extent (X_AXIS).length ()
349 calculate_spacing_rods (me, len);
351 return SCM_UNSPECIFIED;
354 ADD_INTERFACE (Multi_measure_rest,
355 "A rest that spans a whole number of measures.",