source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "dots.hh"
#include "dot-column.hh"
#include "rhythmic-head.hh"
+#include "group-interface.hh"
+#include "staff-symbol-referencer.hh"
+#include "directional-element-interface.hh"
+#include "side-position-interface.hh"
+#include "axis-group-interface.hh"
+
+
+
+
void
-Dot_column::add_dots (Dots *d)
+Dot_column::set_interface (Grob* me)
{
- dot_l_arr_.push (d);
- add_dependency (d);
- add_element (d);
+
+ Directional_element_interface::set (me, RIGHT);
+
+ Axis_group_interface::set_interface (me);
+ Axis_group_interface::set_axes (me, X_AXIS,X_AXIS);
}
-void
-Dot_column::add_head (Rhythmic_head *r)
+/*
+ Will fuck up in this case.
+
+ X. .
+ X.X .
+ |X .
+ |
+ |
+ |X .
+ |
+ |
+
+
+ Should be smarter.
+ */
+
+
+MAKE_SCHEME_CALLBACK(Dot_column,force_shift_callback,2);
+SCM
+Dot_column::force_shift_callback (SCM element_smob, SCM axis)
{
- if (!r->dots_l_)
- return ;
-
- head_l_arr_.push (r);
- add_dependency (r);
- add_dots (r->dots_l_);
+ Grob *me = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (axis);
+ assert (a == Y_AXIS);
+ me = me->parent_l (X_AXIS);
+ SCM dots = me->get_grob_property ("dots");
+ do_shifts (dots);
+ return gh_double2scm (0.0);
}
-void
-Dot_column::do_substitute_element_pointer (Score_element*o,Score_element*n)
+SCM
+Dot_column::do_shifts (SCM l)
{
- Item *oi =dynamic_cast <Item *> (o);
+ Link_array<Grob> dots;
+ while (gh_pair_p (l))
+ {
+ dots.push (unsmob_grob (gh_car (l)));
+ l = gh_cdr (l);
+ }
+
+ dots.sort (compare_position);
- if (oi && dynamic_cast<Rhythmic_head *> (oi))
- head_l_arr_.substitute (dynamic_cast<Rhythmic_head*> (oi),
- dynamic_cast<Rhythmic_head*>(n));
- else if (oi && dynamic_cast<Dots *> (oi))
- dot_l_arr_.substitute (dynamic_cast<Dots*> (oi),
- dynamic_cast<Dots*> (n));
+ if (dots.size () < 2)
+ return SCM_UNSPECIFIED;
+ Slice s;
+ s.set_empty ();
+
+ Array<int> taken_posns;
+ int conflicts = 0;
+ for (int i=0; i < dots.size (); i++)
+ {
+ Real p = Staff_symbol_referencer::position_f (dots[i]);
+ for (int j=0; j < taken_posns.size (); j++)
+ {
+ if (taken_posns[j] == (int) p)
+ conflicts++;
+ }
+ taken_posns.push ((int)p);
+ s.unite (Slice ((int)p,
+ (int)p));
+ }
+
+ if (!conflicts)
+ return SCM_UNSPECIFIED;
+
+ int middle = s.center ();
+ /*
+ +1 -> off by one
+ */
+ int pos = middle - dots.size () + 1;
+ if (!(pos % 2))
+ pos ++; // center () rounds down.
+
+ for (int i=0; i < dots.size (); pos += 2, i++)
+ {
+ Grob * d = dots[i];
+ Staff_symbol_referencer::set_position (d,pos);
+ }
+
+ return SCM_UNSPECIFIED;
}
-void
-Dot_column::do_pre_processing ()
+bool
+Dot_column::has_interface (Grob*m)
{
- Interval w;
- for (int i=0; i < head_l_arr_.size (); i++)
- w.unite (head_l_arr_[i]->extent (X_AXIS));
-
- if (!w.empty_b ())
- translate_axis (w[RIGHT] - extent(X_AXIS) [LEFT],X_AXIS);
+ return m && m->has_interface (ly_symbol2scm ("dot-column-interface"));
}
+void
+Dot_column::add_head (Grob * me, Grob *rh)
+{
+ Grob * d = unsmob_grob (rh->get_grob_property ("dot"));
+ if (d)
+ {
+ Side_position::add_support (me,rh);
+
+ Pointer_group_interface ::add_element (me, "dots",d);
+ d->add_offset_callback (Dot_column::force_shift_callback_proc , Y_AXIS);
+ Axis_group_interface::add_element (me, d);
+ }
+}
+