2 multi-measure-rest.cc -- implement Multi_measure_rest
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2002 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"
25 Multi_measure_rest::has_interface (Grob*me)
27 return me->has_interface (ly_symbol2scm ("multi-measure-rest-interface"));
30 MAKE_SCHEME_CALLBACK (Multi_measure_rest,percent,1);
32 Multi_measure_rest::percent (SCM smob)
35 Grob *me = unsmob_grob (smob);
36 Spanner *sp = dynamic_cast<Spanner*> (me);
38 Molecule r = Percent_repeat_item_interface::x_percent (me, 1, 0.75, 1.6);
46 Item * col = sp->get_bound (d)->column_l ();
48 Interval coldim = col->extent (0, X_AXIS);
50 sp_iv[d] = coldim[-d] ;
52 while ((flip (&d)) != LEFT);
55 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
57 we gotta stay clear of sp_iv, so move a bit to the right if
60 x_off += (sp_iv[LEFT] - rx) >? 0;
65 x_off += sp_iv.length ()/ 2;
67 r.translate_axis (x_off,X_AXIS);
70 return r.smobbed_copy ();
76 variable-sized multi-measure rest symbol: |====| ??
78 MAKE_SCHEME_CALLBACK (Multi_measure_rest,brew_molecule,1);
80 Multi_measure_rest::brew_molecule (SCM smob)
82 Grob *me = unsmob_grob (smob);
83 if (to_boolean (me->get_grob_property ("skip-timestep")))
85 me->set_grob_property ("skip-timestep", SCM_EOL);
89 Spanner * sp = dynamic_cast<Spanner*> (me);
91 SCM alist_chain = Font_interface::font_alist_chain (me);
95 Font_interface::add_style (me, ly_symbol2scm ("mmrest-symbol"),
99 = Font_interface::get_font (me,style_chain);
101 Real staff_space = Staff_symbol_referencer::staff_space (me);
107 Item * col = sp->get_bound (d)->column_l ();
109 Interval coldim = col->extent (0, X_AXIS);
111 sp_iv[d] = coldim[-d] ;
113 while ((flip (&d)) != LEFT);
117 Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
119 we gotta stay clear of sp_iv, so move a bit to the right if
122 x_off += (sp_iv[LEFT] - rx) >? 0;
125 center between stuff.
127 x_off += sp_iv.length ()/ 2;
133 SCM m (me->get_grob_property ("measure-count"));
136 measures = gh_scm2int (m);
140 SCM limit = me->get_grob_property ("expand-limit");
145 s = musfont->find_by_name (Rest::glyph_name (me, 0, ""));
150 if (Staff_symbol_referencer::position_f (me) == 0.0)
151 s.translate_axis (Staff_symbol_referencer::staff_space (me), Y_AXIS);
153 else if (measures <= gh_scm2int (limit))
156 Build a rest from smaller parts. Distances inbetween are
157 really variable, see Wanske pp. 125 */
179 Real pad = s.empty_b ()
180 ? 0.0 : gh_scm2double (me->get_grob_property ("padding")) * staff_space;
182 Molecule r (musfont->find_by_name ("rests-" + to_str (k)));
184 r.translate_axis (staff_space, Y_AXIS);
186 s.add_at_edge (X_AXIS, RIGHT, r, pad);
190 s.align_to (X_AXIS, CENTER);
194 String idx = ("rests-") + to_str (-4);
195 s = musfont->find_by_name (idx);
198 mol.add_molecule (s);
202 Molecule s = Text_item::text2molecule (me,
203 ly_str02scm (to_str (measures).ch_C ()),
205 s.align_to (X_AXIS, CENTER);
206 s.translate_axis (3.0 * staff_space, Y_AXIS);
207 mol.add_molecule (s);
209 mol.translate_axis (x_off, X_AXIS);
210 return mol.smobbed_copy ();
214 UGH. JUNKME elt prop "columns" isn't really needed.
217 Multi_measure_rest::add_column (Grob*me,Item* c)
219 Pointer_group_interface::add_grob (me, ly_symbol2scm ("columns"),c);
221 add_bound_item (dynamic_cast<Spanner*> (me),c);
225 MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods,1);
228 Multi_measure_rest::set_spacing_rods (SCM smob)
230 Grob*me = unsmob_grob (smob);
232 Spanner*sp = dynamic_cast<Spanner*> (me);
233 if (! (sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
235 programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
236 return SCM_UNSPECIFIED;
239 Item * l = sp->get_bound (LEFT)->column_l ();
240 Item * r = sp->get_bound (RIGHT)->column_l ();
241 Item * lb = l->find_prebroken_piece (RIGHT);
242 Item * rb = r->find_prebroken_piece (LEFT);
244 Item* combinations[4][2]={{l,r}, {lb,r}, {l,rb},{lb,rb}};
245 Real staff_space = Staff_symbol_referencer::staff_space (me);
246 for (int i=0; i < 4; i++)
248 Item * l = combinations[i][0];
249 Item *r = combinations[i][1];
255 rod.item_l_drul_[LEFT] = l;
256 rod.item_l_drul_[RIGHT] = r;
259 should do something more advanced.
261 rod.distance_f_ = l->extent (l, X_AXIS)[BIGGER] - r->extent (r, X_AXIS)[SMALLER]
262 + gh_scm2double (me->get_grob_property ("minimum-width")) * staff_space;
266 return SCM_UNSPECIFIED;
271 ADD_INTERFACE (Multi_measure_rest,"multi-measure-rest-interface",
272 "A rest that spans a whole number of measures. For typesetting the
273 numbers, fields from font-interface may be used.
275 padding is the space between number and rest. Measured in staffspace.
278 "columns measure-count expand-limit minimum-width padding");