source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2002 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"
+#include "stem.hh"
-void
-Dot_column::add_dots (Dots *d)
+/*
+ TODO: let Dot_column communicate with stem via Note_column.
+ */
+
+MAKE_SCHEME_CALLBACK (Dot_column,force_shift_callback,2);
+SCM
+Dot_column::force_shift_callback (SCM element_smob, SCM axis)
{
- dot_l_arr_.push (d);
- add_dependency (d);
- add_element (d);
+ Grob *me = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (axis);
+ assert (a == Y_AXIS);
+ me = me->get_parent (X_AXIS);
+ SCM l = me->get_grob_property ("dots");
+ do_shifts (l);
+ return gh_double2scm (0.0);
}
-void
-Dot_column::add_head (Rhythmic_head *r)
+MAKE_SCHEME_CALLBACK(Dot_column,side_position, 2);
+SCM
+Dot_column::side_position (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 == X_AXIS);
+
+ Grob * stem = unsmob_grob (me->get_grob_property ("stem"));
+ if (stem
+ && !Stem::get_beam (stem)
+ && Stem::duration_log (stem) > 2
+ && !Stem::invisible_b (stem)
+ )
+ {
+ /*
+ trigger stem end & direction calculation.
+
+ This will add the stem to the support if a flag collision happens.
+ */
+ Stem::stem_end_position (stem);
+ }
+ return Side_position_interface::aligned_side (element_smob, axis);
}
-void
-Dot_column::do_substitute_dependency (Score_element*o,Score_element*n)
+
+/*
+ Will fuck up in this case.
+
+ X. .
+ X.X .
+ |X .
+ |
+ |
+ |X .
+ |
+ |
+
+
+ Should be smarter.
+ */
+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 (ly_car (l)));
+ l = ly_cdr (l);
+ }
- 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));
+ dots.sort (compare_position);
+
+ 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::get_position (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 ()
+Dot_column::add_head (Grob * me, Grob *rh)
{
- 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);
+ Grob * d = unsmob_grob (rh->get_grob_property ("dot"));
+ if (d)
+ {
+ Side_position_interface::add_support (me,rh);
+
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("dots"), d);
+ d->add_offset_callback (Dot_column::force_shift_callback_proc , Y_AXIS);
+ Axis_group_interface::add_element (me, d);
+ }
}
+
+
+ADD_INTERFACE (Dot_column, "dot-column-interface",
+ "Interface that groups dots so they form a column",
+ "direction stem");
+