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>
13 #include "molecule.hh"
14 #include "paper-column.hh"
15 #include "paper-def.hh"
16 #include "tuplet-spanner.hh"
18 #include "note-column.hh"
19 #include "dimensions.hh"
20 #include "group-interface.hh"
21 #include "directional-element-interface.hh"
25 Tuplet_spanner::Tuplet_spanner ()
27 set_elt_property ("beams", SCM_EOL);
28 set_elt_property ("columns", SCM_EOL);
35 Tuplet_spanner::do_brew_molecule_p () const
37 Molecule* mol_p = new Molecule;
39 // Default behaviour: number always, bracket when no beam!
40 bool par_beam = to_boolean (get_elt_property ("parallel-beam"));
41 bool bracket_visibility = !par_beam;
42 bool number_visibility = true;
43 SCM visibility_sym =get_elt_property ("tuplet-visibility");
44 if (gh_number_p (visibility_sym))
53 2 show (number and bracket)-if-no-beam
54 3 show number, and bracket-if-no-beam
55 4 show number, and bracket
57 int value = gh_scm2int ((visibility_sym));
58 bracket_visibility = (value == 4 || (value > 1 && !par_beam));
59 number_visibility = (value > 2 || value == 1 ||
60 (value == 2 && !par_beam));
63 if (gh_pair_p (get_elt_property ("columns")))
65 Link_array<Note_column> column_arr=
66 Group_interface__extract_elements (this, (Note_column*)0, "columns");
68 Real ncw = column_arr.top ()->extent(X_AXIS).length ();
69 Real w = spanner_length () + ncw;
72 Real staff_space = paper_l ()->get_var ("interline");
73 Direction dir = directional_element (this).get ();
74 Real dy = gh_scm2double (get_elt_property ("delta-y"));
75 SCM number = get_elt_property ("text");
76 if (gh_string_p (number))
80 num (lookup_l ()->text ("italic",
81 ly_scm2string (number), paper_l ()));
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_p->add_molecule (num);
92 Real thick = paper_l ()->get_var ("tuplet_thick");
93 if (bracket_visibility)
95 Real gap = paper_l () -> get_var ("tuplet_spanner_gap");
97 mol_p->add_molecule (lookup_l ()->tuplet_bracket (dy, w, thick, gap, staff_space, dir));
100 mol_p->translate_axis (dir * staff_space, Y_AXIS);
106 Tuplet_spanner::do_add_processing ()
108 if (gh_pair_p (get_elt_property ("columns")))
110 Link_array<Note_column> column_arr=
111 Group_interface__extract_elements (this, (Note_column*)0, "columns");
113 set_bounds (LEFT, column_arr[0]);
114 set_bounds (RIGHT, column_arr.top ());
119 use first -> last note for slope, and then correct for disturbing
122 Tuplet_spanner::calc_position_and_height (Real *offset, Real * dy) const
124 Link_array<Note_column> column_arr=
125 Group_interface__extract_elements (this, (Note_column*)0, "columns");
128 Direction d = directional_element (this).get ();
129 *dy = column_arr.top ()->extent (Y_AXIS) [d]
130 - column_arr[0]->extent (Y_AXIS) [d];
132 *offset = - d * infinity_f;
134 Real x0 = column_arr[0]->hpos_f ();
135 Real x1 = column_arr.top ()->hpos_f ();
136 for (int i = 0; i < column_arr.size (); i++)
138 Real notey = column_arr[i]->extent (Y_AXIS)[d];
139 Real x = column_arr[i]->hpos_f () - x0;
140 Real tuplety = *dy * x / (x1 -x0);
142 if (notey * d > (*offset + tuplety) * d)
143 *offset = notey - tuplety;
148 Tuplet_spanner::do_post_processing ()
151 Link_array<Note_column> column_arr=
152 Group_interface__extract_elements (this, (Note_column*)0, "columns");
154 if (!column_arr.size ())
156 set_elt_property ("transparent", SCM_BOOL_T);
161 Direction d = directional_element (this).get ();
165 directional_element (this).set (d);
170 calc_position_and_height (&offset, &dy);
171 set_elt_property ("delta-y", gh_double2scm (dy));
173 translate_axis (offset, Y_AXIS);
175 if (scm_ilength (get_elt_property ("beams")) == 1)
177 SCM bs = get_elt_property ("beams");
178 Score_element *b = unsmob_element (gh_car (bs));
179 Beam * beam_l = dynamic_cast<Beam*> (b);
181 && spanned_drul_[LEFT]->column_l () == beam_l->spanned_drul_[LEFT]->column_l ()
182 && spanned_drul_[RIGHT]->column_l () == beam_l->spanned_drul_[RIGHT]->column_l ())
183 set_elt_property ("parallel-beam", SCM_BOOL_T);
189 Tuplet_spanner::get_default_dir () const
192 SCM dir_sym =get_elt_property ("dir-forced");
193 if (gh_number_p (dir_sym))
200 for (SCM s = get_elt_property ("columns"); gh_pair_p (s); s = gh_cdr (s))
202 Score_element * sc = unsmob_element (gh_car (s));
203 Note_column * nc = dynamic_cast<Note_column*> (sc);
215 Tuplet_spanner::add_beam (Beam *b)
218 Group_interface gi (this, "beams");
223 Tuplet_spanner::add_column (Note_column*n)
225 Group_interface gi (this, "columns");