2 multi-measure-rest.cc -- implement Multi_measure_rest
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "multi-measure-rest.hh"
12 #include "paper-def.hh"
13 #include "paper-column.hh" // urg
16 #include "molecule.hh"
18 #include "group-interface.hh"
20 #include "staff-symbol-referencer.hh"
23 Multi_measure_rest::set_interface (Score_element*me)
25 me->set_interface (ly_symbol2scm ("multi-measure-rest-interface"));
29 Multi_measure_rest::has_interface (Score_element*me)
31 return me->has_interface (ly_symbol2scm ("multi-measure-rest-interface"));
36 * variable-sized multi-measure rest symbol: |====| ??
38 MAKE_SCHEME_CALLBACK(Multi_measure_rest,brew_molecule);
40 Multi_measure_rest::brew_molecule (SCM smob)
42 Score_element *me = unsmob_element (smob);
43 Spanner * sp = dynamic_cast<Spanner*> (me);
45 = Staff_symbol_referencer::staff_space (me);
51 Item * col = sp->get_bound (d)->column_l ();
53 Interval coldim = col->extent (X_AXIS)
54 + col->relative_coordinate (0, X_AXIS);
56 sp_iv[d] = coldim[-d] ;
58 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;
78 SCM m (me->get_elt_property ("measure-count"));
81 measures = gh_scm2int (m);
85 if (measures <= me->paper_l() ->get_var ("multi_measure_rest_expand_limit"))
88 Build a rest from smaller parts. Distances inbetween are
89 really variable, see Wanske pp. 125 */
111 Real pad = s.empty_b ()
112 ? 0.0 : me->paper_l ()->get_var ("multi_measure_rest_padding");
114 Molecule r (me->lookup_l ()->afm_find ("rests-" + to_str (k)));
116 r.translate_axis (staff_space, Y_AXIS);
118 s.add_at_edge (X_AXIS, RIGHT, r, pad);
122 s.align_to (X_AXIS, CENTER);
126 String idx = ("rests-") + to_str (-4);
127 s = me->lookup_l ()->afm_find (idx);
130 mol.add_molecule (s);
134 Molecule s (me->lookup_l ()->text ("number", to_str (measures), me->paper_l ()));
135 s.align_to (X_AXIS, CENTER);
136 s.translate_axis (3.0 * staff_space, Y_AXIS);
137 mol.add_molecule (s);
139 mol.translate_axis (x_off, X_AXIS);
140 return mol.create_scheme();
144 UGH. JUNKME elt prop "columns" isn't really needed.
147 Multi_measure_rest::add_column (Score_element*me,Item* c)
149 Pointer_group_interface gi (me, "columns");
152 add_bound_item (dynamic_cast<Spanner*> (me),c);
156 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods);
159 Multi_measure_rest::set_spacing_rods (SCM smob)
161 Score_element*me = unsmob_element (smob);
163 Spanner*sp = dynamic_cast<Spanner*> (me);
164 if (!(sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
166 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
167 return SCM_UNSPECIFIED;
170 Item * l = sp->get_bound (LEFT)->column_l ();
171 Item * r = sp->get_bound (RIGHT)->column_l ();
172 Item * lb = l->find_prebroken_piece (RIGHT);
173 Item * rb = r->find_prebroken_piece (LEFT);
175 Item* combinations[4][2]={{l,r}, {lb,r}, {l,rb},{lb,rb}};
176 for (int i=0; i < 4; i++)
178 Item * l = combinations[i][0];
179 Item *r = combinations[i][1];
185 rod.item_l_drul_[LEFT] = l;
186 rod.item_l_drul_[RIGHT] = r;
189 should do something more advanced.
191 rod.distance_f_ = l->extent (X_AXIS)[BIGGER] - r->extent (X_AXIS)[SMALLER]
192 + me->paper_l ()->get_var ("multi_measure_rest_x_minimum");
196 return SCM_UNSPECIFIED;