2 plet-spanner.cc -- implement Tuplet_spanner
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Jan Nieuwenhuizen <janneke@gnu.org>
14 #include "molecule.hh"
15 #include "paper-column.hh"
16 #include "paper-def.hh"
17 #include "tuplet-spanner.hh"
19 #include "note-column.hh"
20 #include "dimensions.hh"
21 #include "group-interface.hh"
22 #include "directional-element-interface.hh"
25 Tuplet_spanner::Tuplet_spanner (SCM s
)
28 set_elt_pointer ("beams", SCM_EOL
);
29 set_elt_pointer ("columns", SCM_EOL
);
32 set_elt_property ("delta-y", gh_int2scm (0));
39 GLUE_SCORE_ELEMENT(Tuplet_spanner
,brew_molecule
);
41 Tuplet_spanner::member_brew_molecule () const
45 // Default behaviour: number always, bracket when no beam!
46 bool par_beam
= to_boolean (get_elt_property ("parallel-beam"));
47 bool bracket_visibility
= !par_beam
;
48 bool number_visibility
= true;
50 SCM bracket
= get_elt_property ("tuplet-bracket-visibility");
51 if (gh_boolean_p (bracket
))
53 bracket_visibility
= gh_scm2bool (bracket
);
55 else if (bracket
== ly_symbol2scm ("if-no-beam"))
56 bracket_visibility
= !par_beam
;
58 SCM numb
= get_elt_property ("tuplet-number-visibility");
59 if (gh_boolean_p (numb
))
61 number_visibility
= gh_scm2bool (numb
);
63 else if (bracket
== ly_symbol2scm ("if-no-beam"))
64 number_visibility
= !par_beam
;
66 if (gh_pair_p (get_elt_pointer ("columns")))
68 Link_array
<Note_column
> column_arr
=
69 Pointer_group_interface__extract_elements (this, (Note_column
*)0, "columns");
71 Real ncw
= column_arr
.top ()->extent(X_AXIS
).length ();
72 Real w
= spanner_length () + ncw
;
75 Real staff_space
= paper_l ()->get_var ("interline");
76 Direction dir
= Directional_element_interface (this).get ();
77 Real dy
= gh_scm2double (get_elt_property ("delta-y"));
78 SCM number
= get_elt_property ("text");
79 if (gh_string_p (number
) && number_visibility
)
82 num (lookup_l ()->text ("italic",
83 ly_scm2string (number
), paper_l ()));
84 num
.align_to (X_AXIS
, CENTER
);
85 num
.translate_axis (w
/2, X_AXIS
);
86 num
.align_to (Y_AXIS
, CENTER
);
87 num
.translate_axis (dir
* staff_space
, Y_AXIS
);
89 num
.translate_axis (dy
/2, Y_AXIS
);
91 mol
.add_molecule (num
);
94 if (bracket_visibility
)
96 SCM ss
= paper_l ()->get_scmvar ("staffspace");
97 SCM lt
= paper_l ()->get_scmvar ("stafflinethickness");
99 SCM thick
= get_elt_property ("thick");
100 SCM gap
= get_elt_property ("number-gap");
102 SCM at
=gh_list(ly_symbol2scm ("tuplet"),
104 scm_product (gap
, ss
),
107 scm_product (thick
, lt
),
112 mol
.add_molecule (Molecule (b
, at
));
115 return mol
.create_scheme();
122 use first -> last note for slope, and then correct for disturbing
125 Tuplet_spanner::calc_position_and_height (Real
*offset
, Real
* dy
) const
127 Link_array
<Note_column
> column_arr
=
128 Pointer_group_interface__extract_elements (this, (Note_column
*)0, "columns");
131 Score_element
* common
= common_refpoint (get_elt_pointer ("columns"), Y_AXIS
);
133 Direction d
= Directional_element_interface (this).get ();
136 Use outer non-rest columns to determine slope
139 while (l
<column_arr
.size() && column_arr
[l
]->rest_b())
142 int r
= column_arr
.size ()- 1;
143 while (r
>= l
&& column_arr
[r
]->rest_b())
148 *dy
= column_arr
[r
]->extent (Y_AXIS
) [d
] + column_arr
[r
]->relative_coordinate (common
, Y_AXIS
)
149 - column_arr
[l
]->extent (Y_AXIS
) [d
] - column_arr
[l
]->relative_coordinate (common
, Y_AXIS
);
155 *offset
= - d
* infinity_f
;
157 if (!column_arr
.size ())
160 Real x0
= column_arr
[0]->relative_coordinate (0, X_AXIS
);
161 Real x1
= column_arr
.top ()->relative_coordinate (0, X_AXIS
);
163 Real factor
= column_arr
.size () > 1 ? 1/(x1
- x0
) : 1.0;
165 for (int i
= 0; i
< column_arr
.size (); i
++)
167 Real notey
= column_arr
[i
]->extent (Y_AXIS
)[d
] +
168 column_arr
[i
]->relative_coordinate (common
, Y_AXIS
)
170 Real x
= column_arr
[i
]->relative_coordinate (0, X_AXIS
) - x0
;
171 Real tuplety
= *dy
* x
* factor
;
173 if (notey
* d
> (*offset
+ tuplety
) * d
)
174 *offset
= notey
- tuplety
;
179 use first -> last note for slope,
182 Tuplet_spanner::calc_dy (Real
* dy
) const
184 Link_array
<Note_column
> column_arr
=
185 Pointer_group_interface__extract_elements (this, (Note_column
*)0, "columns");
188 Direction d
= Directional_element_interface (this).get ();
189 *dy
= column_arr
.top ()->extent (Y_AXIS
) [d
]
190 - column_arr
[0]->extent (Y_AXIS
) [d
];
193 GLUE_SCORE_ELEMENT(Tuplet_spanner
,after_line_breaking
);
195 Tuplet_spanner::member_after_line_breaking ()
197 Link_array
<Note_column
> column_arr
=
198 Pointer_group_interface__extract_elements (this, (Note_column
*)0, "columns");
200 if (!column_arr
.size ())
203 return SCM_UNDEFINED
;
206 Direction d
= Directional_element_interface (this).get ();
209 d
= get_default_dir ();
210 Directional_element_interface (this).set (d
);
215 calc_position_and_height (&offset
,&dy
);
217 set_elt_property ("delta-y", gh_double2scm (dy
));
219 translate_axis (offset
, Y_AXIS
);
221 if (scm_ilength (get_elt_pointer ("beams")) == 1)
223 SCM bs
= get_elt_pointer ("beams");
224 Score_element
*b
= unsmob_element (gh_car (bs
));
225 Beam
* beam_l
= dynamic_cast<Beam
*> (b
);
227 && get_bound (LEFT
)->column_l () == beam_l
->get_bound (LEFT
)->column_l ()
228 && get_bound (RIGHT
)->column_l () == beam_l
->get_bound (RIGHT
)->column_l ())
229 set_elt_property ("parallel-beam", SCM_BOOL_T
);
231 return SCM_UNDEFINED
;
236 Tuplet_spanner::get_default_dir () const
239 SCM dir_sym
=get_elt_property ("dir-forced");
240 if (isdir_b (dir_sym
))
248 for (SCM s
= get_elt_pointer ("columns"); gh_pair_p (s
); s
= gh_cdr (s
))
250 Score_element
* sc
= unsmob_element (gh_car (s
));
251 Note_column
* nc
= dynamic_cast<Note_column
*> (sc
);
263 Tuplet_spanner::add_beam (Beam
*b
)
266 Pointer_group_interface
gi (this, "beams");
271 Tuplet_spanner::add_column (Note_column
*n
)
273 Pointer_group_interface
gi (this, "columns");
278 add_bound_item (this, n
);