2 plet-spanner.cc -- implement Tuplet_bracket
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 Jan Nieuwenhuizen <janneke@gnu.org>
13 #include "font-interface.hh"
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"
28 staff-line collisions for horizontal tuplet brackets.
34 Tuplet_bracket::set_interface (Grob*me)
36 me->set_interface (ly_symbol2scm ("tuplet-bracket"));
40 TODO: use stem->beam fields to find Beams. Autobeams aren't found
41 through the engraver mechanism. */
42 MAKE_SCHEME_CALLBACK (Tuplet_bracket,brew_molecule,1);
44 Tuplet_bracket::brew_molecule (SCM smob)
46 Grob *me= unsmob_grob (smob);
49 // Default behaviour: number always, bracket when no beam!
50 bool par_beam = to_boolean (me->get_grob_property ("parallel-beam"));
51 bool bracket_visibility = !par_beam;
52 bool number_visibility = true;
54 SCM bracket = me->get_grob_property ("tuplet-bracket-visibility");
55 if (gh_boolean_p (bracket))
57 bracket_visibility = gh_scm2bool (bracket);
59 else if (bracket == ly_symbol2scm ("if-no-beam"))
60 bracket_visibility = !par_beam;
62 SCM numb = me->get_grob_property ("tuplet-number-visibility");
63 if (gh_boolean_p (numb))
65 number_visibility = gh_scm2bool (numb);
67 else if (bracket == ly_symbol2scm ("if-no-beam"))
68 number_visibility = !par_beam;
70 if (gh_pair_p (me->get_grob_property ("columns")))
72 Link_array<Grob> column_arr=
73 Pointer_group_interface__extract_elements (me, (Grob*)0, "columns");
75 Real ncw = column_arr.top ()->extent (column_arr.top (), X_AXIS).length ();
76 Real w = dynamic_cast<Spanner*> (me)->spanner_length () + ncw;
78 Real staff_space = 1.0;
79 Direction dir = Directional_element_interface::get (me);
80 Real dy = gh_scm2double (me->get_grob_property ("delta-y"));
81 SCM number = me->get_grob_property ("text");
82 if (gh_string_p (number) && number_visibility)
84 SCM properties = Font_interface::font_alist_chain (me);
85 Molecule num = Text_item::text2molecule (me, number, properties);
86 num.align_to (X_AXIS, CENTER);
87 num.translate_axis (w/2, X_AXIS);
88 num.align_to (Y_AXIS, CENTER);
89 num.translate_axis (dir * staff_space, Y_AXIS);
91 num.translate_axis (dy/2, Y_AXIS);
93 mol.add_molecule (num);
96 if (bracket_visibility)
98 Real lt = me->paper_l ()->get_var ("stafflinethickness");
100 SCM thick = me->get_grob_property ("thick");
101 SCM gap = me->get_grob_property ("number-gap");
103 SCM at =gh_list (ly_symbol2scm ("tuplet"),
108 gh_double2scm (gh_scm2double (thick)* lt),
113 mol.add_molecule (Molecule (b, at));
116 return mol.smobbed_copy ();
123 use first -> last note for slope, and then correct for disturbing
126 Tuplet_bracket::calc_position_and_height (Grob*me,Real *offset, Real * dy)
128 Link_array<Grob> column_arr=
129 Pointer_group_interface__extract_elements (me, (Grob*)0, "columns");
132 Grob * commony = me->common_refpoint (me->get_grob_property ("columns"), Y_AXIS);
133 Grob * commonx = me->common_refpoint (me->get_grob_property ("columns"), X_AXIS);
135 Direction d = Directional_element_interface::get (me);
138 Use outer non-rest columns to determine slope
141 while (l <column_arr.size () && Note_column::rest_b (column_arr[l]))
144 int r = column_arr.size ()- 1;
145 while (r >= l && Note_column::rest_b (column_arr[r]))
150 *dy = column_arr[r]->extent (commony, Y_AXIS) [d]
151 - column_arr[l]->extent (commony, Y_AXIS) [d] ;
157 *offset = - d * infinity_f;
159 if (!column_arr.size ())
162 Real x0 = column_arr[0]->relative_coordinate (commonx, X_AXIS);
163 Real x1 = column_arr.top ()->relative_coordinate (commonx, X_AXIS);
165 Real factor = column_arr.size () > 1 ? 1/ (x1 - x0) : 1.0;
167 for (int i = 0; i < column_arr.size (); i++)
169 Real notey = column_arr[i]->extent (commony, Y_AXIS)[d]
170 - me->relative_coordinate (commony, Y_AXIS);
172 Real x = column_arr[i]->relative_coordinate (commonx, X_AXIS) - x0;
173 Real tuplety = *dy * x * factor;
175 if (notey * d > (*offset + tuplety) * d)
176 *offset = notey - tuplety;
181 use first -> last note for slope,
184 Tuplet_bracket::calc_dy (Grob*me,Real * dy)
186 Link_array<Grob> column_arr=
187 Pointer_group_interface__extract_elements (me, (Grob*)0, "columns");
192 Direction d = Directional_element_interface::get (me);
193 *dy = column_arr.top ()->extent (column_arr.top (), Y_AXIS) [d]
194 - column_arr[0]->extent (column_arr[0], Y_AXIS) [d];
196 MAKE_SCHEME_CALLBACK (Tuplet_bracket,after_line_breaking,1);
199 Tuplet_bracket::after_line_breaking (SCM smob)
201 Grob * me = unsmob_grob (smob);
202 Link_array<Note_column> column_arr=
203 Pointer_group_interface__extract_elements (me, (Note_column*)0, "columns");
204 Spanner *sp = dynamic_cast<Spanner*> (me);
207 if (!column_arr.size ())
210 return SCM_UNSPECIFIED;
213 Direction d = Directional_element_interface::get (me);
216 d = Tuplet_bracket::get_default_dir (me);
217 Directional_element_interface::set (me, d);
222 calc_position_and_height (me,&offset,&dy);
224 me->set_grob_property ("delta-y", gh_double2scm (dy));
226 me->translate_axis (offset, Y_AXIS);
228 if (scm_ilength (me->get_grob_property ("beams")) == 1)
230 SCM bs = me->get_grob_property ("beams");
231 Grob *b = unsmob_grob (gh_car (bs));
232 Spanner * beam_l = dynamic_cast<Spanner *> (b);
234 && sp->get_bound (LEFT)->column_l () == beam_l->get_bound (LEFT)->column_l ()
235 && sp->get_bound (RIGHT)->column_l () == beam_l->get_bound (RIGHT)->column_l ())
236 me->set_grob_property ("parallel-beam", SCM_BOOL_T);
238 return SCM_UNSPECIFIED;
243 Tuplet_bracket::get_default_dir (Grob*me)
246 SCM dir_sym =me->get_grob_property ("dir-forced");
247 if (isdir_b (dir_sym))
255 for (SCM s = me->get_grob_property ("columns"); gh_pair_p (s); s = gh_cdr (s))
257 Grob * nc = unsmob_grob (gh_car (s));
258 if (Note_column::dir (nc) < 0)
269 Tuplet_bracket::add_beam (Grob*me, Grob *b)
271 me->add_dependency (b);
272 Pointer_group_interface::add_element (me, "beams",b);
276 Tuplet_bracket::add_column (Grob*me, Item*n)
278 Pointer_group_interface::add_element (me, "columns",n);
279 me->add_dependency (n);
281 add_bound_item (dynamic_cast<Spanner*> (me), n);