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"
22 #include "percent-repeat-item.hh"
26 Multi_measure_rest::set_interface (Grob*me)
28 me->set_interface (ly_symbol2scm ("multi-measure-rest-interface"));
32 Multi_measure_rest::has_interface (Grob*me)
34 return me->has_interface (ly_symbol2scm ("multi-measure-rest-interface"));
37 MAKE_SCHEME_CALLBACK (Multi_measure_rest,percent,1);
39 Multi_measure_rest::percent (SCM smob)
42 Grob *me = unsmob_grob (smob);
43 Spanner *sp = dynamic_cast<Spanner*> (me);
45 Molecule r = Percent_repeat_item_interface::x_percent (me, 1, 0.75, 1.6);
53 Item * col = sp->get_bound (d)->column_l ();
55 Interval coldim = col->extent (0, X_AXIS);
57 sp_iv[d] = coldim[-d] ;
59 while ((flip (&d)) != LEFT);
62 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
64 we gotta stay clear of sp_iv, so move a bit to the right if
67 x_off += (sp_iv[LEFT] - rx) >? 0;
72 x_off += sp_iv.length ()/ 2;
74 r.translate_axis (x_off,X_AXIS);
77 return r.smobbed_copy ();
83 variable-sized multi-measure rest symbol: |====| ??
85 MAKE_SCHEME_CALLBACK (Multi_measure_rest,brew_molecule,1);
87 Multi_measure_rest::brew_molecule (SCM smob)
89 Grob *me = unsmob_grob (smob);
90 if (to_boolean (me->get_grob_property ("skip-timestep")))
92 me->set_grob_property ("skip-timestep", SCM_EOL);
96 Spanner * sp = dynamic_cast<Spanner*> (me);
98 SCM alist_chain = Font_interface::font_alist_chain (me);
102 Font_interface::add_style (me, ly_symbol2scm ("mmrest-symbol"),
106 = Font_interface::get_font (me,style_chain);
108 Real staff_space = Staff_symbol_referencer::staff_space (me);
114 Item * col = sp->get_bound (d)->column_l ();
116 Interval coldim = col->extent (0, X_AXIS);
118 sp_iv[d] = coldim[-d] ;
120 while ((flip (&d)) != LEFT);
124 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
126 we gotta stay clear of sp_iv, so move a bit to the right if
129 x_off += (sp_iv[LEFT] - rx) >? 0;
132 center between stuff.
134 x_off += sp_iv.length ()/ 2;
140 SCM m (me->get_grob_property ("measure-count"));
143 measures = gh_scm2int (m);
147 SCM limit = me->get_grob_property ("expand-limit");
152 s = musfont->find_by_name (Rest::glyph_name (me, 0, ""));
157 if (Staff_symbol_referencer::position_f (me) == 0.0)
158 s.translate_axis (Staff_symbol_referencer::staff_space (me), Y_AXIS);
160 else if (measures <= gh_scm2int (limit))
163 Build a rest from smaller parts. Distances inbetween are
164 really variable, see Wanske pp. 125 */
186 Real pad = s.empty_b ()
187 ? 0.0 : gh_scm2double (me->get_grob_property ("padding")) * staff_space;
189 Molecule r (musfont->find_by_name ("rests-" + to_str (k)));
191 r.translate_axis (staff_space, Y_AXIS);
193 s.add_at_edge (X_AXIS, RIGHT, r, pad);
197 s.align_to (X_AXIS, CENTER);
201 String idx = ("rests-") + to_str (-4);
202 s = musfont->find_by_name (idx);
205 mol.add_molecule (s);
209 Molecule s = Text_item::text2molecule (me,
210 ly_str02scm (to_str (measures).ch_C ()),
212 s.align_to (X_AXIS, CENTER);
213 s.translate_axis (3.0 * staff_space, Y_AXIS);
214 mol.add_molecule (s);
216 mol.translate_axis (x_off, X_AXIS);
217 return mol.smobbed_copy ();
221 UGH. JUNKME elt prop "columns" isn't really needed.
224 Multi_measure_rest::add_column (Grob*me,Item* c)
226 Pointer_group_interface::add_element (me, "columns",c);
228 add_bound_item (dynamic_cast<Spanner*> (me),c);
232 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods,1);
235 Multi_measure_rest::set_spacing_rods (SCM smob)
237 Grob*me = unsmob_grob (smob);
239 Spanner*sp = dynamic_cast<Spanner*> (me);
240 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
242 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
243 return SCM_UNSPECIFIED;
246 Item * l = sp->get_bound (LEFT)->column_l ();
247 Item * r = sp->get_bound (RIGHT)->column_l ();
248 Item * lb = l->find_prebroken_piece (RIGHT);
249 Item * rb = r->find_prebroken_piece (LEFT);
251 Item* combinations[4][2]={{l,r}, {lb,r}, {l,rb},{lb,rb}};
252 Real staff_space = Staff_symbol_referencer::staff_space (me);
253 for (int i=0; i < 4; i++)
255 Item * l = combinations[i][0];
256 Item *r = combinations[i][1];
262 rod.item_l_drul_[LEFT] = l;
263 rod.item_l_drul_[RIGHT] = r;
266 should do something more advanced.
268 rod.distance_f_ = l->extent (l, X_AXIS)[BIGGER] - r->extent (r, X_AXIS)[SMALLER]
269 + gh_scm2double (me->get_grob_property ("minimum-width")) * staff_space;
273 return SCM_UNSPECIFIED;