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 = b->extent (common, X_AXIS);
84 sp_iv[d] = coldim.is_empty () ? b->relative_coordinate (common, X_AXIS) : coldim[-d];
86 while ((flip (&d)) != LEFT);
88 Real space = sp_iv.length ();
90 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
92 we gotta stay clear of sp_iv, so move a bit to the right if
95 Real x_off = max (sp_iv[LEFT] - rx, 0.0);
98 mol.add_stencil (symbol_stencil (me, space));
101 SCM m (me->get_property ("measure-count"));
102 if (scm_is_number (m))
103 measures = scm_to_int (m);
105 mol.translate_axis (x_off, X_AXIS);
106 return mol.smobbed_copy ();
110 Multi_measure_rest::symbol_stencil (Grob *me, Real space)
113 SCM m (me->get_property ("measure-count"));
114 if (scm_is_number (m))
115 measures = scm_to_int (m);
119 SCM limit = me->get_property ("expand-limit");
120 if (measures > scm_to_int (limit))
123 Stencil s = big_rest (me, (1.0 - 2 * padding) * space);
124 s.translate_axis (padding * space, X_AXIS);
128 SCM alist_chain = Font_interface::music_font_alist_chain (me);
130 Real staff_space = Staff_symbol_referencer::staff_space (me);
132 = select_font (me->layout (), alist_chain);
134 SCM sml = me->get_property ("use-breve-rest");
137 if (to_boolean (sml))
139 Stencil s = musfont->find_by_name (Rest::glyph_name (me, -1, "", false));
141 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
147 Stencil s = musfont->find_by_name (Rest::glyph_name (me, 0, "", true));
152 if (Staff_symbol_referencer::get_position (me) == 0.0)
153 s.translate_axis (staff_space, Y_AXIS);
155 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
161 return church_rest (me, musfont, measures, space);
165 WIDTH can also be 0 to determine the minimum size of the object.
168 Multi_measure_rest::big_rest (Grob *me, Real width)
170 Real thick_thick = robust_scm2double (me->get_property ("thick-thickness"), 1.0);
171 Real hair_thick = robust_scm2double (me->get_property ("hair-thickness"), .1);
173 Real ss = Staff_symbol_referencer::staff_space (me);
174 Real slt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
175 Real y = slt * thick_thick / 2 * ss;
176 Real ythick = hair_thick * slt * ss;
177 Box b (Interval (0.0, max (0.0, (width - 2 * ythick))), Interval (-y, y));
179 Real blot = width ? (.8 * min (y, ythick)) : 0.0;
181 Stencil m = Lookup::round_filled_box (b, blot);
182 Stencil yb = Lookup::round_filled_box (Box (Interval (-0.5, 0.5) * ythick, Interval (-ss, ss)), blot);
184 m.add_at_edge (X_AXIS, RIGHT, yb, 0);
185 m.add_at_edge (X_AXIS, LEFT, yb, 0);
187 m.align_to (X_AXIS, LEFT);
196 Multi_measure_rest::church_rest (Grob *me, Font_metric *musfont, int measures,
201 /* See Wanske pp. 125 */
204 Real symbols_width = 0.0;
206 bool use_breve = to_boolean (me->get_property ("use-breve-rest"));
224 Stencil r (musfont->find_by_name ("rests." + to_string (k)));
225 symbols_width += r.extent (X_AXIS).length ();
226 mols = scm_cons (r.smobbed_copy (), mols);
247 Stencil r (musfont->find_by_name ("rests." + to_string (k)));
250 Real staff_space = Staff_symbol_referencer::staff_space (me);
251 r.translate_axis (staff_space, Y_AXIS);
253 symbols_width += r.extent (X_AXIS).length ();
254 mols = scm_cons (r.smobbed_copy (), mols);
259 /* Make outer padding this much bigger. */
260 Real outer_padding_factor = 1.5;
261 Real inner_padding = (space - symbols_width)
262 / (2 * outer_padding_factor + (count - 1));
263 if (inner_padding < 0)
267 for (SCM s = mols; scm_is_pair (s); s = scm_cdr (s))
268 mol.add_at_edge (X_AXIS, LEFT, *unsmob_stencil (scm_car (s)),
270 mol.align_to (X_AXIS, LEFT);
271 mol.translate_axis (outer_padding_factor * inner_padding, X_AXIS);
277 Multi_measure_rest::add_column (Grob *me, Item *c)
279 add_bound_item (dynamic_cast<Spanner *> (me), c);
283 Multi_measure_rest::calculate_spacing_rods (Grob *me, Real length)
285 Spanner *sp = dynamic_cast<Spanner *> (me);
286 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
288 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
292 Item *li = sp->get_bound (LEFT)->get_column ();
293 Item *ri = sp->get_bound (RIGHT)->get_column ();
294 Item *lb = li->find_prebroken_piece (RIGHT);
295 Item *rb = ri->find_prebroken_piece (LEFT);
297 Item *combinations[4][2] = {{li, ri},
302 for (int i = 0; i < 4; i++)
304 Item *li = combinations[i][0];
305 Item *ri = combinations[i][1];
311 rod.item_drul_[LEFT] = li;
312 rod.item_drul_[RIGHT] = ri;
314 rod.distance_ = li->extent (li, X_AXIS)[BIGGER]
315 - ri->extent (ri, X_AXIS)[SMALLER]
317 + 2 * robust_scm2double (me->get_property ("bound-padding"), 1.0);
319 Real minlen = robust_scm2double (me->get_property ("minimum-length"), 0);
320 rod.distance_ = max (rod.distance_, minlen);
325 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods, 1);
327 Multi_measure_rest::set_spacing_rods (SCM smob)
329 Grob *me = unsmob_grob (smob);
330 Real sym_width = symbol_stencil (me, 0.0).extent (X_AXIS).length ();
331 calculate_spacing_rods (me, sym_width);
333 return SCM_UNSPECIFIED;
336 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_text_rods, 1);
338 Multi_measure_rest::set_text_rods (SCM smob)
340 Grob *me = unsmob_grob (smob);
341 Stencil *stil = me->get_stencil ();
344 Real len = (stil && !stil->extent (X_AXIS).is_empty ())
345 ? stil->extent (X_AXIS).length ()
347 calculate_spacing_rods (me, len);
349 return SCM_UNSPECIFIED;
352 ADD_INTERFACE (Multi_measure_rest,
353 "A rest that spans a whole number of measures.",