2 dot-column.cc -- implement Dot_column
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 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"
19 MAKE_SCHEME_CALLBACK (Dot_column,force_shift_callback,2);
21 Dot_column::force_shift_callback (SCM element_smob, SCM axis)
23 Grob *me = unsmob_grob (element_smob);
24 Axis a = (Axis) gh_scm2int (axis);
26 me = me->get_parent (X_AXIS);
27 SCM l = me->get_grob_property ("dots");
29 return gh_double2scm (0.0);
32 MAKE_SCHEME_CALLBACK(Dot_column,side_position, 2);
34 Dot_column::side_position (SCM element_smob, SCM axis)
36 Grob *me = unsmob_grob (element_smob);
37 Axis a = (Axis) gh_scm2int (axis);
40 Grob * stem = unsmob_grob (me->get_grob_property ("stem"));
42 && !Stem::beam_l (stem)
43 && Stem::flag_i (stem))
46 trigger stem end & direction calculation.
48 This will add the stem to the support if a flag collision happens.
50 Stem::stem_end_position (stem);
52 return Side_position_interface::aligned_side (element_smob, axis);
57 Will fuck up in this case.
72 Dot_column::do_shifts (SCM l)
74 Link_array<Grob> dots;
77 dots.push (unsmob_grob (ly_car (l)));
81 dots.sort (compare_position);
84 return SCM_UNSPECIFIED;
88 Array<int> taken_posns;
90 for (int i=0; i < dots.size (); i++)
92 Real p = Staff_symbol_referencer::position_f (dots[i]);
93 for (int j=0; j < taken_posns.size (); j++)
95 if (taken_posns[j] == (int) p)
98 taken_posns.push ((int)p);
99 s.unite (Slice ((int)p,
104 return SCM_UNSPECIFIED;
106 int middle = s.center ();
110 int pos = middle - dots.size () + 1;
112 pos ++; // center () rounds down.
114 for (int i=0; i < dots.size (); pos += 2, i++)
117 Staff_symbol_referencer::set_position (d,pos);
120 return SCM_UNSPECIFIED;
124 Dot_column::has_interface (Grob*m)
126 return m && m->has_interface (ly_symbol2scm ("dot-column-interface"));
131 Dot_column::add_head (Grob * me, Grob *rh)
133 Grob * d = unsmob_grob (rh->get_grob_property ("dot"));
136 Side_position_interface::add_support (me,rh);
138 Pointer_group_interface::add_element (me, ly_symbol2scm ("dots"), d);
139 d->add_offset_callback (Dot_column::force_shift_callback_proc , Y_AXIS);
140 Axis_group_interface::add_element (me, d);