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");