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
17 #include "molecule.hh"
19 #include "group-interface.hh"
21 #include "staff-symbol-referencer.hh"
23 Multi_measure_rest::Multi_measure_rest (SCM s)
26 set_elt_pointer ("columns", SCM_EOL);
32 * variable-sized multi-measure rest symbol: |====| ??
34 MAKE_SCHEME_SCORE_ELEMENT_CALLBACKS(Multi_measure_rest)
36 Multi_measure_rest::do_brew_molecule () const
39 = staff_symbol_referencer (this).staff_space ();
45 Item * col = get_bound (d)->column_l ();
47 Interval coldim = col->extent (X_AXIS)
48 + col->relative_coordinate (0, X_AXIS);
50 sp_iv[d] = coldim[-d] ;
52 while ((flip (&d)) != LEFT);
56 Real rx = get_bound (LEFT)->relative_coordinate (0, X_AXIS);
58 we gotta stay clear of sp_iv, so move a bit to the right if
61 x_off += (sp_iv[LEFT] - rx) >? 0;
66 x_off += sp_iv.length ()/ 2;
72 SCM m (get_elt_property ("measure-count"));
75 measures = gh_scm2int (m);
79 if (measures <= paper_l() ->get_var ("multi_measure_rest_expand_limit"))
82 Build a rest from smaller parts. Distances inbetween are
83 really variable, see Wanske pp. 125 */
105 Real pad = s.empty_b ()
106 ? 0.0 : paper_l ()->get_var ("multi_measure_rest_padding");
108 Molecule r (lookup_l ()->afm_find ("rests-" + to_str (k)));
110 r.translate_axis (staff_space, Y_AXIS);
112 s.add_at_edge (X_AXIS, RIGHT, r, pad);
116 s.align_to (X_AXIS, CENTER);
120 String idx = ("rests-") + to_str (-4);
121 s = lookup_l ()->afm_find (idx);
124 mol.add_molecule (s);
128 Molecule s (lookup_l ()->text ("number", to_str (measures), paper_l ()));
129 s.align_to (X_AXIS, CENTER);
130 s.translate_axis (3.0 * staff_space, Y_AXIS);
131 mol.add_molecule (s);
133 mol.translate_axis (x_off, X_AXIS);
138 UGH. JUNKME elt prop "columns" isn't really needed.
142 Multi_measure_rest::do_add_processing ()
144 if (gh_pair_p (get_elt_pointer ("columns")))
146 Link_array<Item> column_arr (Pointer_group_interface__extract_elements (this, (Item*)0, "columns"));
148 set_bound (LEFT, column_arr[0 >? column_arr.size () - 2]);
149 set_bound (RIGHT, column_arr.top ());
152 // set columns to SCM_EOL?
156 Multi_measure_rest::after_line_breaking ()
158 if (!gh_pair_p (get_elt_pointer ("columns")))
168 Multi_measure_rest::add_column (Item* c)
170 Pointer_group_interface gi (this, "columns");
179 Multi_measure_rest::get_rods () const
183 if (!(get_bound (LEFT) && get_bound (RIGHT)))
185 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
189 Item * l = get_bound (LEFT)->column_l ();
190 Item * r = get_bound (RIGHT)->column_l ();
191 Item * lb = l->find_prebroken_piece (RIGHT);
192 Item * rb = r->find_prebroken_piece (LEFT);
194 Item* combinations[4][2]={{l,r}, {lb,r}, {l,rb},{lb,rb}};
195 for (int i=0; i < 4; i++)
197 Item * l = combinations[i][0];
198 Item *r = combinations[i][1];
204 rod.item_l_drul_[LEFT] = l;
205 rod.item_l_drul_[RIGHT] = r;
208 should do something more advanced.
210 rod.distance_f_ = l->extent (X_AXIS)[BIGGER] - r->extent (X_AXIS)[SMALLER]
211 + paper_l ()->get_var ("multi_measure_rest_x_minimum");