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 (Score_element * dc, Score_element *rh)
23 Score_element * d = unsmob_element (rh->get_elt_pointer ("dot"));
26 Side_position_interface (dc).add_support (rh);
28 Pointer_group_interface gi (dc, "dots");
31 d->add_offset_callback (force_shift_callback , Y_AXIS);
32 Axis_group_interface (dc).add_element (d);
38 Dot_column::compare (Score_element * const &d1, Score_element * const &d2)
40 Staff_symbol_referencer_interface s1(d1);
41 Staff_symbol_referencer_interface s2(d2);
43 return int (s1.position_f () - s2.position_f ());
48 Dot_column::set_interface (Score_element* dc)
50 dc->set_elt_pointer ("dots", SCM_EOL);
51 Directional_element_interface (dc).set (RIGHT);
53 Axis_group_interface (dc).set_interface ();
54 Axis_group_interface (dc).set_axes(X_AXIS,X_AXIS);
58 Will fuck up in this case.
75 Dot_column::force_shift_callback (Score_element * dot, Axis a)
78 Score_element * me = dot->parent_l (X_AXIS);
79 SCM dots = me->get_elt_pointer ("dots");
85 Dot_column::do_shifts (SCM l)
87 Link_array<Score_element> dots;
90 dots.push (unsmob_element (gh_car (l)));
94 dots.sort (Dot_column::compare);
101 Array<int> taken_posns;
103 for (int i=0; i < dots.size (); i++)
105 Real p = Staff_symbol_referencer_interface (dots[i]).position_f ();
106 for (int j=0; j < taken_posns.size (); j++)
108 if (taken_posns[j] == (int) p)
111 taken_posns.push ((int)p);
112 s.unite (Slice ((int)p,
117 return SCM_UNDEFINED;
119 int middle = s.center ();
123 int pos = middle - dots.size () + 1;
125 pos ++; // center () rounds down.
127 for (int i=0; i < dots.size (); pos += 2, i++)
129 Score_element * d = dots[i];
130 Staff_symbol_referencer_interface (d).set_position(pos);
133 return SCM_UNDEFINED;