2 multi-measure-rest.cc -- implement Multi_measure_rest
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2001 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"
18 #include "group-interface.hh"
20 #include "staff-symbol-referencer.hh"
21 #include "text-item.hh"
24 Multi_measure_rest::set_interface (Grob*me)
26 me->set_interface (ly_symbol2scm ("multi-measure-rest-interface"));
30 Multi_measure_rest::has_interface (Grob*me)
32 return me->has_interface (ly_symbol2scm ("multi-measure-rest-interface"));
35 MAKE_SCHEME_CALLBACK (Multi_measure_rest,percent,1);
37 Multi_measure_rest::percent (SCM smob)
39 Grob *me = unsmob_grob (smob);
40 Spanner *sp = dynamic_cast<Spanner*> (me);
42 Font_metric *musfont = Font_interface::get_default_font (me);
44 Molecule r (musfont->find_by_name ("scripts-repeatsign"));
52 Item * col = sp->get_bound (d)->column_l ();
54 Interval coldim = col->extent (0, X_AXIS);
56 sp_iv[d] = coldim[-d] ;
58 while ((flip (&d)) != LEFT);
61 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
63 we gotta stay clear of sp_iv, so move a bit to the right if
66 x_off += (sp_iv[LEFT] - rx) >? 0;
71 x_off += sp_iv.length ()/ 2;
73 r.translate_axis (x_off,X_AXIS);
76 return r.smobbed_copy ();
82 variable-sized multi-measure rest symbol: |====| ??
84 MAKE_SCHEME_CALLBACK (Multi_measure_rest,brew_molecule,1);
86 Multi_measure_rest::brew_molecule (SCM smob)
88 Grob *me = unsmob_grob (smob);
89 if (to_boolean (me->get_grob_property ("skip-timestep")))
91 me->set_grob_property ("skip-timestep", SCM_EOL);
95 Spanner * sp = dynamic_cast<Spanner*> (me);
97 SCM alist_chain = Font_interface::font_alist_chain (me);
101 Font_interface::add_style (me, ly_symbol2scm ("mmrest-symbol"),
105 = Font_interface::get_font (me,style_chain);
107 Real staff_space = Staff_symbol_referencer::staff_space (me);
113 Item * col = sp->get_bound (d)->column_l ();
115 Interval coldim = col->extent (0, X_AXIS);
117 sp_iv[d] = coldim[-d] ;
119 while ((flip (&d)) != LEFT);
123 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
125 we gotta stay clear of sp_iv, so move a bit to the right if
128 x_off += (sp_iv[LEFT] - rx) >? 0;
131 center between stuff.
133 x_off += sp_iv.length ()/ 2;
139 SCM m (me->get_grob_property ("measure-count"));
142 measures = gh_scm2int (m);
146 SCM limit = me->get_grob_property ("expand-limit");
147 if (measures <= gh_scm2int (limit))
150 Build a rest from smaller parts. Distances inbetween are
151 really variable, see Wanske pp. 125 */
173 Real pad = s.empty_b ()
174 ? 0.0 : gh_scm2double (me->get_grob_property ("padding")) * staff_space;
176 Molecule r (musfont->find_by_name ("rests-" + to_str (k)));
178 r.translate_axis (staff_space, Y_AXIS);
180 s.add_at_edge (X_AXIS, RIGHT, r, pad);
184 s.align_to (X_AXIS, CENTER);
188 String idx = ("rests-") + to_str (-4);
189 s = musfont->find_by_name (idx);
192 mol.add_molecule (s);
196 Molecule s = Text_item::text2molecule (me,
197 ly_str02scm (to_str (measures).ch_C ()),
199 s.align_to (X_AXIS, CENTER);
200 s.translate_axis (3.0 * staff_space, Y_AXIS);
201 mol.add_molecule (s);
203 mol.translate_axis (x_off, X_AXIS);
204 return mol.smobbed_copy ();
208 UGH. JUNKME elt prop "columns" isn't really needed.
211 Multi_measure_rest::add_column (Grob*me,Item* c)
213 Pointer_group_interface::add_element (me, "columns",c);
215 add_bound_item (dynamic_cast<Spanner*> (me),c);
219 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods,1);
222 Multi_measure_rest::set_spacing_rods (SCM smob)
224 Grob*me = unsmob_grob (smob);
226 Spanner*sp = dynamic_cast<Spanner*> (me);
227 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
229 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
230 return SCM_UNSPECIFIED;
233 Item * l = sp->get_bound (LEFT)->column_l ();
234 Item * r = sp->get_bound (RIGHT)->column_l ();
235 Item * lb = l->find_prebroken_piece (RIGHT);
236 Item * rb = r->find_prebroken_piece (LEFT);
238 Item* combinations[4][2]={{l,r}, {lb,r}, {l,rb},{lb,rb}};
239 Real staff_space = Staff_symbol_referencer::staff_space (me);
240 for (int i=0; i < 4; i++)
242 Item * l = combinations[i][0];
243 Item *r = combinations[i][1];
249 rod.item_l_drul_[LEFT] = l;
250 rod.item_l_drul_[RIGHT] = r;
253 should do something more advanced.
255 rod.distance_f_ = l->extent (l, X_AXIS)[BIGGER] - r->extent (r, X_AXIS)[SMALLER]
256 + gh_scm2double (me->get_grob_property ("minimum-width")) * staff_space;
260 return SCM_UNSPECIFIED;