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: |====| ??
35 GLUE_SCORE_ELEMENT(Multi_measure_rest,brew_molecule);
38 Multi_measure_rest::member_brew_molecule () const
41 = staff_symbol_referencer (this).staff_space ();
47 Item * col = get_bound (d)->column_l ();
49 Interval coldim = col->extent (X_AXIS)
50 + col->relative_coordinate (0, X_AXIS);
52 sp_iv[d] = coldim[-d] ;
54 while ((flip (&d)) != LEFT);
58 Real rx = get_bound (LEFT)->relative_coordinate (0, X_AXIS);
60 we gotta stay clear of sp_iv, so move a bit to the right if
63 x_off += (sp_iv[LEFT] - rx) >? 0;
68 x_off += sp_iv.length ()/ 2;
74 SCM m (get_elt_property ("measure-count"));
77 measures = gh_scm2int (m);
81 if (measures <= paper_l() ->get_var ("multi_measure_rest_expand_limit"))
84 Build a rest from smaller parts. Distances inbetween are
85 really variable, see Wanske pp. 125 */
107 Real pad = s.empty_b ()
108 ? 0.0 : paper_l ()->get_var ("multi_measure_rest_padding");
110 Molecule r (lookup_l ()->afm_find ("rests-" + to_str (k)));
112 r.translate_axis (staff_space, Y_AXIS);
114 s.add_at_edge (X_AXIS, RIGHT, r, pad);
118 s.align_to (X_AXIS, CENTER);
122 String idx = ("rests-") + to_str (-4);
123 s = lookup_l ()->afm_find (idx);
126 mol.add_molecule (s);
130 Molecule s (lookup_l ()->text ("number", to_str (measures), paper_l ()));
131 s.align_to (X_AXIS, CENTER);
132 s.translate_axis (3.0 * staff_space, Y_AXIS);
133 mol.add_molecule (s);
135 mol.translate_axis (x_off, X_AXIS);
136 return mol.create_scheme();
140 UGH. JUNKME elt prop "columns" isn't really needed.
144 Multi_measure_rest::do_add_processing ()
147 if (gh_pair_p (get_elt_pointer ("columns")))
149 Link_array<Item> column_arr (Pointer_group_interface__extract_elements (this, (Item*)0, "columns"));
151 set_bound (LEFT, column_arr[0 >? column_arr.size () - 2]);
152 set_bound (RIGHT, column_arr.top ());
155 // set columns to SCM_EOL?
158 GLUE_SCORE_ELEMENT(Multi_measure_rest,after_line_breaking);
160 Multi_measure_rest::member_after_line_breaking ()
162 if (!gh_pair_p (get_elt_pointer ("columns")))
167 return SCM_UNDEFINED;
173 Multi_measure_rest::add_column (Item* c)
175 Pointer_group_interface gi (this, "columns");
178 add_bound_item (this, c);
185 Multi_measure_rest::get_rods () const
189 if (!(get_bound (LEFT) && get_bound (RIGHT)))
191 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
195 Item * l = get_bound (LEFT)->column_l ();
196 Item * r = get_bound (RIGHT)->column_l ();
197 Item * lb = l->find_prebroken_piece (RIGHT);
198 Item * rb = r->find_prebroken_piece (LEFT);
200 Item* combinations[4][2]={{l,r}, {lb,r}, {l,rb},{lb,rb}};
201 for (int i=0; i < 4; i++)
203 Item * l = combinations[i][0];
204 Item *r = combinations[i][1];
210 rod.item_l_drul_[LEFT] = l;
211 rod.item_l_drul_[RIGHT] = r;
214 should do something more advanced.
216 rod.distance_f_ = l->extent (X_AXIS)[BIGGER] - r->extent (X_AXIS)[SMALLER]
217 + paper_l ()->get_var ("multi_measure_rest_x_minimum");