2 multi-measure-rest.cc -- implement Multi_measure_rest
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2002 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "multi-measure-rest.hh"
12 #include "paper-def.hh"
13 #include "paper-column.hh" // urg
14 #include "font-interface.hh"
16 #include "molecule.hh"
19 #include "staff-symbol-referencer.hh"
20 #include "text-item.hh"
21 #include "percent-repeat-item.hh"
25 Multi_measure_rest::has_interface (Grob*me)
27 return me->has_interface (ly_symbol2scm ("multi-measure-rest-interface"));
30 MAKE_SCHEME_CALLBACK (Multi_measure_rest,percent,1);
32 Multi_measure_rest::percent (SCM smob)
34 Grob *me = unsmob_grob (smob);
35 Spanner *sp = dynamic_cast<Spanner*> (me);
37 Molecule r = Percent_repeat_item_interface::x_percent (me, 1, 0.75, 1.6);
45 Item * col = sp->get_bound (d)->column_l ();
47 Interval coldim = col->extent (0, X_AXIS);
49 sp_iv[d] = coldim[-d] ;
51 while ((flip (&d)) != LEFT);
54 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
56 we gotta stay clear of sp_iv, so move a bit to the right if
59 x_off += (sp_iv[LEFT] - rx) >? 0;
64 x_off += sp_iv.length ()/ 2;
66 r.translate_axis (x_off,X_AXIS);
69 return r.smobbed_copy ();
75 variable-sized multi-measure rest symbol: |====| ??
77 MAKE_SCHEME_CALLBACK (Multi_measure_rest,brew_molecule,1);
79 Multi_measure_rest::brew_molecule (SCM smob)
81 Grob *me = unsmob_grob (smob);
82 Spanner * sp = dynamic_cast<Spanner*> (me);
84 SCM alist_chain = Font_interface::font_alist_chain (me);
89 Grob *common = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
92 Item * col = sp->get_bound (d)->column_l ();
94 Interval coldim = col->extent (common, X_AXIS);
96 sp_iv[d] = coldim[-d] ;
98 while ((flip (&d)) != LEFT);
100 Real space = sp_iv.length();
102 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
104 we gotta stay clear of sp_iv, so move a bit to the right if
107 Real x_off = (sp_iv[LEFT] - rx) >? 0;
111 mol.add_molecule (symbol_molecule (me, space));
114 SCM m (me->get_grob_property ("measure-count"));
117 measures = gh_scm2int (m);
122 Molecule s = Text_item::text2molecule (me,
123 ly_str02scm (to_str (measures).ch_C ()),
127 s.align_to (X_AXIS, CENTER);
128 s.translate_axis (3.0, Y_AXIS);
130 s.translate_axis (mol.extent (X_AXIS).center (), X_AXIS);
131 mol.add_molecule (s);
133 mol.translate_axis (x_off, X_AXIS);
134 return mol.smobbed_copy ();
139 Multi_measure_rest::symbol_molecule (Grob *me, Real space)
142 SCM m (me->get_grob_property ("measure-count"));
145 measures = gh_scm2int (m);
149 SCM limit = me->get_grob_property ("expand-limit");
153 if (measures > gh_scm2int (limit))
156 Molecule s = big_rest (me, (1.0 - 2*padding) * space);
157 s.translate_axis (padding * space, X_AXIS);
161 SCM alist_chain = Font_interface::font_alist_chain (me);
164 Font_interface::add_style (me, ly_symbol2scm ("mmrest-symbol"),
167 Real staff_space = Staff_symbol_referencer::staff_space (me);
169 = Font_interface::get_font (me,style_chain);
173 Molecule s = musfont->find_by_name (Rest::glyph_name (me, 0, ""));
178 if (Staff_symbol_referencer::position_f (me) == 0.0)
179 s.translate_axis (staff_space, Y_AXIS);
181 s.translate_axis ((space - s.extent (X_AXIS).length ())/2, X_AXIS);
187 return church_rest (me, musfont, measures, space);
194 Multi_measure_rest::big_rest (Grob *me, Real width)
196 Real thick = gh_scm2double (me->get_grob_property ("thickness"));
197 Real ss = Staff_symbol_referencer::staff_space (me);
199 Real slt = me->paper_l ()->get_var ("linethickness");
200 Real y = slt * thick/2 * ss;
201 Box b(Interval (0, width), Interval (-y, y));
202 Real ythick = slt * ss;
204 Molecule m = Lookup::filledbox (b);
205 Molecule yb = Lookup::filledbox (Box (Interval (-ythick, ythick), Interval (-ss, ss)));
207 m.add_at_edge (X_AXIS, RIGHT, yb, -ythick);
208 m.add_at_edge (X_AXIS, LEFT, yb, -ythick);
210 m.align_to (X_AXIS, LEFT);
219 Multi_measure_rest::church_rest (Grob*me, Font_metric *musfont, int measures,
229 Real symbols_width = 0.0;
249 Molecule r (musfont->find_by_name ("rests-" + to_str (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 = gh_cons (r.smobbed_copy (), mols);
261 Real outer_padding_factor = 1.5; // make outer padding this much bigger.
262 Real inner_padding = (space - symbols_width) / (2 * outer_padding_factor + (count-1));
265 for (SCM s = mols; gh_pair_p (s); s = gh_cdr(s))
267 mol.add_at_edge (X_AXIS, LEFT, *unsmob_molecule (gh_car (s)), inner_padding);
269 mol.align_to (X_AXIS, LEFT);
270 mol.translate_axis (outer_padding_factor * inner_padding, X_AXIS);
276 Multi_measure_rest::add_column (Grob*me,Item* c)
278 add_bound_item (dynamic_cast<Spanner*> (me),c);
282 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods,1);
285 Multi_measure_rest::set_spacing_rods (SCM smob)
287 return SCM_UNSPECIFIED;
289 Grob*me = unsmob_grob (smob);
291 Spanner*sp = dynamic_cast<Spanner*> (me);
292 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
294 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
295 return SCM_UNSPECIFIED;
298 Item * l = sp->get_bound (LEFT)->column_l ();
299 Item * r = sp->get_bound (RIGHT)->column_l ();
300 Item * lb = l->find_prebroken_piece (RIGHT);
301 Item * rb = r->find_prebroken_piece (LEFT);
303 Item* combinations[4][2]={{l,r}, {lb,r}, {l,rb},{lb,rb}};
305 for (int i=0; i < 4; i++)
307 Item * l = combinations[i][0];
308 Item *r = combinations[i][1];
314 rod.item_l_drul_[LEFT] = l;
315 rod.item_l_drul_[RIGHT] = r;
316 rod.distance_f_ = l->extent (l, X_AXIS)[BIGGER] - r->extent (r, X_AXIS)[SMALLER]
321 return SCM_UNSPECIFIED;
326 ADD_INTERFACE (Multi_measure_rest,"multi-measure-rest-interface",
327 "A rest that spans a whole number of measures. For typesetting the
328 numbers, fields from font-interface may be used.
332 "thickness measure-count expand-limit");