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 "text-item.hh"
18 #include "tuplet-spanner.hh"
20 #include "note-column.hh"
21 #include "dimensions.hh"
22 #include "group-interface.hh"
23 #include "directional-element-interface.hh"
27 Tuplet_spanner::set_interface (Score_element*me)
29 me->set_interface (ly_symbol2scm ("tuplet-bracket"));
36 MAKE_SCHEME_CALLBACK(Tuplet_spanner,brew_molecule,1);
39 Tuplet_spanner::brew_molecule (SCM smob)
41 Score_element *me= unsmob_element (smob);
44 // Default behaviour: number always, bracket when no beam!
45 bool par_beam = to_boolean (me->get_elt_property ("parallel-beam"));
46 bool bracket_visibility = !par_beam;
47 bool number_visibility = true;
49 SCM bracket = me->get_elt_property ("tuplet-bracket-visibility");
50 if (gh_boolean_p (bracket))
52 bracket_visibility = gh_scm2bool (bracket);
54 else if (bracket == ly_symbol2scm ("if-no-beam"))
55 bracket_visibility = !par_beam;
57 SCM numb = me->get_elt_property ("tuplet-number-visibility");
58 if (gh_boolean_p (numb))
60 number_visibility = gh_scm2bool (numb);
62 else if (bracket == ly_symbol2scm ("if-no-beam"))
63 number_visibility = !par_beam;
65 if (gh_pair_p (me->get_elt_property ("columns")))
67 Link_array<Score_element> column_arr=
68 Pointer_group_interface__extract_elements (me, (Score_element*)0, "columns");
70 Real ncw = column_arr.top ()->extent(column_arr.top (), X_AXIS).length ();
71 Real w = dynamic_cast<Spanner*>(me)->spanner_length () + ncw;
73 Real staff_space = me->paper_l ()->get_var ("staffspace");
74 Direction dir = Directional_element_interface::get (me);
75 Real dy = gh_scm2double (me->get_elt_property ("delta-y"));
76 SCM number = me->get_elt_property ("text");
77 if (gh_string_p (number) && number_visibility)
79 SCM properties = gh_append2 (me->immutable_property_alist_,
80 me->mutable_property_alist_);
81 Molecule num = Text_item::text2molecule (me, number, properties);
82 num.align_to (X_AXIS, CENTER);
83 num.translate_axis (w/2, X_AXIS);
84 num.align_to (Y_AXIS, CENTER);
85 num.translate_axis (dir * staff_space, Y_AXIS);
87 num.translate_axis (dy/2, Y_AXIS);
89 mol.add_molecule (num);
92 if (bracket_visibility)
94 SCM ss = me->paper_l ()->get_scmvar ("staffspace");
95 SCM lt = me->paper_l ()->get_scmvar ("stafflinethickness");
97 SCM thick = me->get_elt_property ("thick");
98 SCM gap = me->get_elt_property ("number-gap");
100 SCM at =gh_list(ly_symbol2scm ("tuplet"),
102 scm_product (gap, ss),
105 scm_product (thick, lt),
110 mol.add_molecule (Molecule (b, at));
113 return mol.create_scheme();
120 use first -> last note for slope, and then correct for disturbing
123 Tuplet_spanner::calc_position_and_height (Score_element*me,Real *offset, Real * dy)
125 Link_array<Score_element> column_arr=
126 Pointer_group_interface__extract_elements (me, (Score_element*)0, "columns");
129 Score_element * commony = me->common_refpoint (me->get_elt_property ("columns"), Y_AXIS);
130 Score_element * commonx = me->common_refpoint (me->get_elt_property ("columns"), X_AXIS);
132 Direction d = Directional_element_interface::get (me);
135 Use outer non-rest columns to determine slope
138 while (l <column_arr.size() && Note_column::rest_b(column_arr[l]))
141 int r = column_arr.size ()- 1;
142 while (r >= l && Note_column::rest_b(column_arr[r]))
147 *dy = column_arr[r]->extent (commony, Y_AXIS) [d]
148 - column_arr[l]->extent (commony, Y_AXIS) [d] ;
154 *offset = - d * infinity_f;
156 if (!column_arr.size ())
159 Real x0 = column_arr[0]->relative_coordinate (commonx, X_AXIS);
160 Real x1 = column_arr.top ()->relative_coordinate (commonx, X_AXIS);
162 Real factor = column_arr.size () > 1 ? 1/(x1 - x0) : 1.0;
164 for (int i = 0; i < column_arr.size (); i++)
166 Real notey = column_arr[i]->extent (commony, Y_AXIS)[d]
167 - me->relative_coordinate (commony, Y_AXIS);
169 Real x = column_arr[i]->relative_coordinate (commonx, X_AXIS) - x0;
170 Real tuplety = *dy * x * factor;
172 if (notey * d > (*offset + tuplety) * d)
173 *offset = notey - tuplety;
178 use first -> last note for slope,
181 Tuplet_spanner::calc_dy (Score_element*me,Real * dy)
183 Link_array<Score_element> column_arr=
184 Pointer_group_interface__extract_elements (me, (Score_element*)0, "columns");
189 Direction d = Directional_element_interface::get (me);
190 *dy = column_arr.top ()->extent (column_arr.top (), Y_AXIS) [d]
191 - column_arr[0]->extent (column_arr[0], Y_AXIS) [d];
193 MAKE_SCHEME_CALLBACK(Tuplet_spanner,after_line_breaking,1);
196 Tuplet_spanner::after_line_breaking (SCM smob)
198 Score_element * me = unsmob_element (smob);
199 Link_array<Note_column> column_arr=
200 Pointer_group_interface__extract_elements (me, (Note_column*)0, "columns");
201 Spanner *sp = dynamic_cast<Spanner*> (me);
204 if (!column_arr.size ())
207 return SCM_UNSPECIFIED;
210 Direction d = Directional_element_interface::get (me);
213 d = Tuplet_spanner::get_default_dir (me);
214 Directional_element_interface::set (me, d);
219 calc_position_and_height (me,&offset,&dy);
221 me->set_elt_property ("delta-y", gh_double2scm (dy));
223 me->translate_axis (offset, Y_AXIS);
225 if (scm_ilength (me->get_elt_property ("beams")) == 1)
227 SCM bs = me->get_elt_property ("beams");
228 Score_element *b = unsmob_element (gh_car (bs));
229 Spanner * beam_l = dynamic_cast<Spanner *> (b);
231 && sp->get_bound (LEFT)->column_l () == beam_l->get_bound (LEFT)->column_l ()
232 && sp->get_bound (RIGHT)->column_l () == beam_l->get_bound (RIGHT)->column_l ())
233 me->set_elt_property ("parallel-beam", SCM_BOOL_T);
235 return SCM_UNSPECIFIED;
240 Tuplet_spanner::get_default_dir (Score_element*me)
243 SCM dir_sym =me->get_elt_property ("dir-forced");
244 if (isdir_b (dir_sym))
252 for (SCM s = me->get_elt_property ("columns"); gh_pair_p (s); s = gh_cdr (s))
254 Score_element * nc = unsmob_element (gh_car (s));
255 if (Note_column::dir (nc) < 0)
266 Tuplet_spanner::add_beam (Score_element*me, Score_element *b)
268 me->add_dependency (b);
269 Pointer_group_interface::add_element (me, "beams",b);
273 Tuplet_spanner::add_column (Score_element*me, Item*n)
275 Pointer_group_interface::add_element (me, "columns",n);
276 me->add_dependency (n);
278 add_bound_item (dynamic_cast<Spanner*> (me), n);