2 multi-measure-rest.cc -- implement Multi_measure_rest
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2005 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-item.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);
39 Item *col = sp->get_bound (d)->get_column ();
41 Interval coldim = col->extent (0, X_AXIS);
43 sp_iv[d] = coldim[-d];
45 while ((flip (&d)) != LEFT);
48 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
50 we gotta stay clear of sp_iv, so move a bit to the right if
53 x_off += (sp_iv[LEFT] - rx) >? 0;
58 x_off += sp_iv.length () / 2;
60 r.translate_axis (x_off, X_AXIS);
62 return r.smobbed_copy ();
65 MAKE_SCHEME_CALLBACK (Multi_measure_rest, print, 1);
67 Multi_measure_rest::print (SCM smob)
69 Grob *me = unsmob_grob (smob);
70 Spanner *sp = dynamic_cast<Spanner *> (me);
75 Grob *common = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
78 Item *b = sp->get_bound (d);
80 Interval coldim = (Separation_item::has_interface (b))
81 ? Separation_item::relative_width (b, common)
82 : 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 = (sp_iv[LEFT] - rx) >? 0;
98 mol.add_stencil (symbol_stencil (me, space));
101 SCM m (me->get_property ("measure-count"));
102 if (scm_is_number (m))
104 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))
118 measures = scm_to_int (m);
123 SCM limit = me->get_property ("expand-limit");
124 if (measures > scm_to_int (limit))
127 Stencil s = big_rest (me, (1.0 - 2 * padding) * space);
128 s.translate_axis (padding * space, X_AXIS);
132 SCM alist_chain = Font_interface::music_font_alist_chain (me);
134 Real staff_space = Staff_symbol_referencer::staff_space (me);
136 = select_font (me->get_layout (), alist_chain);
138 SCM sml = me->get_property ("use-breve-rest");
141 if (to_boolean (sml))
143 Stencil s = musfont->find_by_name (Rest::glyph_name (me, -1, "", false));
145 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
151 Stencil s = musfont->find_by_name (Rest::glyph_name (me, 0, "", true));
156 if (Staff_symbol_referencer::get_position (me) == 0.0)
157 s.translate_axis (staff_space, Y_AXIS);
159 s.translate_axis ((space - s.extent (X_AXIS).length ()) / 2, X_AXIS);
166 return church_rest (me, musfont, measures, space);
171 WIDTH can also be 0 to determine the minimum size of the object.
174 Multi_measure_rest::big_rest (Grob *me, Real width)
176 Real thick_thick = robust_scm2double (me->get_property ("thick-thickness"), 1.0);
177 Real hair_thick = robust_scm2double (me->get_property ("hair-thickness"), .1);
179 Real ss = Staff_symbol_referencer::staff_space (me);
180 Real slt = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
181 Real y = slt * thick_thick / 2 * ss;
182 Real ythick = hair_thick * slt * ss;
183 Box b (Interval (0, 0 >? (width - 2 * ythick)), Interval (-y, y));
185 Real blot = width ? (.8 * (y <? ythick)) : 0.0;
187 Stencil m = Lookup::round_filled_box (b, blot);
188 Stencil yb = Lookup::round_filled_box (Box (Interval (-0.5, 0.5) * ythick, Interval (-ss, ss)), blot);
190 m.add_at_edge (X_AXIS, RIGHT, yb, 0, 0);
191 m.add_at_edge (X_AXIS, LEFT, yb, 0, 0);
193 m.align_to (X_AXIS, LEFT);
202 Multi_measure_rest::church_rest (Grob *me, Font_metric *musfont, int measures,
207 /* See Wanske pp. 125 */
210 Real symbols_width = 0.0;
212 SCM sml = me->get_property ("use-breve-rest");
216 if (sml == SCM_BOOL_T)
230 Stencil r (musfont->find_by_name ("rests." + to_string (k)));
231 symbols_width += r.extent (X_AXIS).length ();
232 mols = scm_cons (r.smobbed_copy (), mols);
253 Stencil r (musfont->find_by_name ("rests." + to_string (k)));
256 Real staff_space = Staff_symbol_referencer::staff_space (me);
257 r.translate_axis (staff_space, Y_AXIS);
259 symbols_width += r.extent (X_AXIS).length ();
260 mols = scm_cons (r.smobbed_copy (), mols);
265 /* Make outer padding this much bigger. */
266 Real outer_padding_factor = 1.5;
267 Real inner_padding = (space - symbols_width)
268 / (2 * outer_padding_factor + (count - 1));
269 if (inner_padding < 0)
273 for (SCM s = mols; scm_is_pair (s); s = scm_cdr (s))
274 mol.add_at_edge (X_AXIS, LEFT, *unsmob_stencil (scm_car (s)),
276 mol.align_to (X_AXIS, LEFT);
277 mol.translate_axis (outer_padding_factor * inner_padding, X_AXIS);
283 Multi_measure_rest::add_column (Grob *me, Item *c)
285 add_bound_item (dynamic_cast<Spanner *> (me), c);
288 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods, 1);
290 Multi_measure_rest::set_spacing_rods (SCM smob)
292 Grob *me = unsmob_grob (smob);
294 Spanner *sp = dynamic_cast<Spanner *> (me);
295 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
297 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
298 return SCM_UNSPECIFIED;
301 Item *li = sp->get_bound (LEFT)->get_column ();
302 Item *ri = sp->get_bound (RIGHT)->get_column ();
303 Item *lb = li->find_prebroken_piece (RIGHT);
304 Item *rb = ri->find_prebroken_piece (LEFT);
306 Item *combinations[4][2] = {{li, ri},
311 Real sym_width = symbol_stencil (me, 0.0).extent (X_AXIS).length ();
313 for (int i = 0; i < 4; i++)
315 Item *li = combinations[i][0];
316 Item *ri = combinations[i][1];
322 rod.item_drul_[LEFT] = li;
323 rod.item_drul_[RIGHT] = ri;
325 rod.distance_ = li->extent (li, X_AXIS)[BIGGER]
326 - ri->extent (ri, X_AXIS)[SMALLER]
330 Real minlen = robust_scm2double (me->get_property ("minimum-length"), 0);
331 rod.distance_ = max (rod.distance_, minlen);
334 return SCM_UNSPECIFIED;
337 ADD_INTERFACE (Multi_measure_rest, "multi-measure-rest-interface",
338 "A rest that spans a whole number of measures.",
339 "expand-limit measure-count hair-thickness thick-thickness use-breve-rest minimum-length");