2 dot-column.cc -- implement Dot_column
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "dot-column.hh"
11 #include "rhythmic-head.hh"
12 #include "group-interface.hh"
13 #include "staff-symbol-referencer.hh"
14 #include "directional-element-interface.hh"
15 #include "side-position-interface.hh"
16 #include "axis-group-interface.hh"
21 Dot_column::add_head (Rhythmic_head *r)
26 Side_position_interface (this).add_support (r);
27 Item * d = r->dots_l ();
30 Pointer_group_interface gi (this, "dots");
33 d->add_offset_callback (force_shift_callback , Y_AXIS);
34 Axis_group_interface (this).add_element (d);
40 Dot_column::compare (Score_element * const &d1, Score_element * const &d2)
42 Staff_symbol_referencer_interface s1(d1);
43 Staff_symbol_referencer_interface s2(d2);
45 return int (s1.position_f () - s2.position_f ());
49 Dot_column::Dot_column (SCM s)
52 this->set_elt_pointer ("dots", SCM_EOL);
53 Directional_element_interface (this).set (RIGHT);
55 Axis_group_interface (this).set_interface ();
56 Axis_group_interface (this).set_axes(X_AXIS,X_AXIS);
60 Will fuck up in this case.
77 Dot_column::force_shift_callback (Score_element const * dot, Axis a)
80 Score_element * me = dot->parent_l (X_AXIS);
81 SCM dots = me->get_elt_pointer ("dots");
87 Dot_column::do_shifts (SCM l)
89 Link_array<Score_element> dots;
92 dots.push (unsmob_element (gh_car (l)));
96 dots.sort (Dot_column::compare);
103 Array<int> taken_posns;
105 for (int i=0; i < dots.size (); i++)
107 Real p = Staff_symbol_referencer_interface (dots[i]).position_f ();
108 for (int j=0; j < taken_posns.size (); j++)
110 if (taken_posns[j] == (int) p)
113 taken_posns.push ((int)p);
114 s.unite (Slice ((int)p,
119 return SCM_UNDEFINED;
121 int middle = s.center ();
125 int pos = middle - dots.size () + 1;
127 pos ++; // center () rounds down.
129 for (int i=0; i < dots.size (); pos += 2, i++)
131 Score_element * d = dots[i];
132 Staff_symbol_referencer_interface (d).set_position(pos);
135 return SCM_UNDEFINED;