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"
20 #include "text-interface.hh"
21 #include "percent-repeat-item.hh"
23 #include "separation-item.hh"
26 Multi_measure_rest::bar_width (Spanner *me)
32 Item *col = me->get_bound (d)->get_column ();
34 Interval coldim = Paper_column::break_align_width (col);
38 while ((flip (&d)) != LEFT);
43 MAKE_SCHEME_CALLBACK (Multi_measure_rest, percent, 1);
45 Multi_measure_rest::percent (SCM smob)
47 Grob *me = unsmob_grob (smob);
48 Spanner *sp = dynamic_cast<Spanner *> (me);
50 Stencil r = Percent_repeat_item_interface::x_percent (me, 1, 0.75, 1.6);
54 Grob *common_x = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT),
56 Interval sp_iv = bar_width (sp);
59 Real rx = sp->get_bound (LEFT)->relative_coordinate (common_x, X_AXIS);
61 we gotta stay clear of sp_iv, so move a bit to the right if
64 x_off += max (sp_iv[LEFT] - rx, 0.0);
69 x_off += sp_iv.length () / 2;
71 r.translate_axis (x_off, X_AXIS);
73 return r.smobbed_copy ();
76 MAKE_SCHEME_CALLBACK (Multi_measure_rest, print, 1);
78 Multi_measure_rest::print (SCM smob)
80 Grob *me = unsmob_grob (smob);
81 Spanner *sp = dynamic_cast<Spanner *> (me);
83 Interval sp_iv = bar_width (sp);
84 Real space = sp_iv.length ();
86 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
88 we gotta stay clear of sp_iv, so move a bit to the right if
91 Real x_off = max (sp_iv[LEFT] - rx, 0.0);
94 mol.add_stencil (symbol_stencil (me, space));
97 SCM m (me->get_property ("measure-count"));
98 if (scm_is_number (m))
99 measures = scm_to_int (m);
101 mol.translate_axis (x_off, X_AXIS);
102 return mol.smobbed_copy ();
106 Multi_measure_rest::symbol_stencil (Grob *me, Real space)
109 SCM m (me->get_property ("measure-count"));
110 if (scm_is_number (m))
111 measures = scm_to_int (m);
115 SCM limit = me->get_property ("expand-limit");
116 if (measures > scm_to_int (limit))
119 Stencil s = big_rest (me, (1.0 - 2 * padding) * space);
120 s.translate_axis (padding * space, X_AXIS);
124 SCM alist_chain = Font_interface::music_font_alist_chain (me);
126 Real staff_space = Staff_symbol_referencer::staff_space (me);
128 = select_font (me->layout (), alist_chain);
130 SCM sml = me->get_property ("use-breve-rest");
133 if (to_boolean (sml))
135 Stencil s = musfont->find_by_name (Rest::glyph_name (me, -1, "", false));
137 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
143 Stencil s = musfont->find_by_name (Rest::glyph_name (me, 0, "", true));
148 if (Staff_symbol_referencer::get_position (me) == 0.0)
149 s.translate_axis (staff_space, Y_AXIS);
151 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
157 return church_rest (me, musfont, measures, space);
161 WIDTH can also be 0 to determine the minimum size of the object.
164 Multi_measure_rest::big_rest (Grob *me, Real width)
166 Real thick_thick = robust_scm2double (me->get_property ("thick-thickness"), 1.0);
167 Real hair_thick = robust_scm2double (me->get_property ("hair-thickness"), .1);
169 Real ss = Staff_symbol_referencer::staff_space (me);
170 Real slt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
171 Real y = slt * thick_thick / 2 * ss;
172 Real ythick = hair_thick * slt * ss;
173 Box b (Interval (0.0, max (0.0, (width - 2 * ythick))), Interval (-y, y));
175 Real blot = width ? (.8 * min (y, ythick)) : 0.0;
177 Stencil m = Lookup::round_filled_box (b, blot);
178 Stencil yb = Lookup::round_filled_box (Box (Interval (-0.5, 0.5) * ythick, Interval (-ss, ss)), blot);
180 m.add_at_edge (X_AXIS, RIGHT, yb, 0);
181 m.add_at_edge (X_AXIS, LEFT, yb, 0);
183 m.align_to (X_AXIS, LEFT);
192 Multi_measure_rest::church_rest (Grob *me, Font_metric *musfont, int measures,
197 /* See Wanske pp. 125 */
200 Real symbols_width = 0.0;
202 bool use_breve = to_boolean (me->get_property ("use-breve-rest"));
220 Stencil r (musfont->find_by_name ("rests." + to_string (k)));
221 symbols_width += r.extent (X_AXIS).length ();
222 mols = scm_cons (r.smobbed_copy (), mols);
243 Stencil r (musfont->find_by_name ("rests." + to_string (k)));
246 Real staff_space = Staff_symbol_referencer::staff_space (me);
247 r.translate_axis (staff_space, Y_AXIS);
249 symbols_width += r.extent (X_AXIS).length ();
250 mols = scm_cons (r.smobbed_copy (), mols);
255 /* Make outer padding this much bigger. */
256 Real outer_padding_factor = 1.5;
257 Real inner_padding = (space - symbols_width)
258 / (2 * outer_padding_factor + (count - 1));
259 if (inner_padding < 0)
263 for (SCM s = mols; scm_is_pair (s); s = scm_cdr (s))
264 mol.add_at_edge (X_AXIS, LEFT, *unsmob_stencil (scm_car (s)),
266 mol.align_to (X_AXIS, LEFT);
267 mol.translate_axis (outer_padding_factor * inner_padding, X_AXIS);
273 Multi_measure_rest::add_column (Grob *me, Item *c)
275 add_bound_item (dynamic_cast<Spanner *> (me), c);
279 Multi_measure_rest::calculate_spacing_rods (Grob *me, Real length)
281 Spanner *sp = dynamic_cast<Spanner *> (me);
282 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
284 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
288 Item *li = sp->get_bound (LEFT)->get_column ();
289 Item *ri = sp->get_bound (RIGHT)->get_column ();
290 Item *lb = li->find_prebroken_piece (RIGHT);
291 Item *rb = ri->find_prebroken_piece (LEFT);
293 Item *combinations[4][2] = {{li, ri},
298 for (int i = 0; i < 4; i++)
300 Item *li = combinations[i][0];
301 Item *ri = combinations[i][1];
307 rod.item_drul_[LEFT] = li;
308 rod.item_drul_[RIGHT] = ri;
310 rod.distance_ = Paper_column::minimum_distance (li, ri)
312 + 2 * robust_scm2double (me->get_property ("bound-padding"), 1.0);
314 Real minlen = robust_scm2double (me->get_property ("minimum-length"), 0);
315 rod.distance_ = max (rod.distance_, minlen);
320 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods, 1);
322 Multi_measure_rest::set_spacing_rods (SCM smob)
324 Grob *me = unsmob_grob (smob);
325 Real sym_width = symbol_stencil (me, 0.0).extent (X_AXIS).length ();
326 calculate_spacing_rods (me, sym_width);
328 return SCM_UNSPECIFIED;
331 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_text_rods, 1);
333 Multi_measure_rest::set_text_rods (SCM smob)
335 Grob *me = unsmob_grob (smob);
336 Stencil *stil = me->get_stencil ();
339 Real len = (stil && !stil->extent (X_AXIS).is_empty ())
340 ? stil->extent (X_AXIS).length ()
342 calculate_spacing_rods (me, len);
344 return SCM_UNSPECIFIED;
347 ADD_INTERFACE (Multi_measure_rest,
348 "A rest that spans a whole number of measures.",