/*
note-column.cc -- implement Note_column
- source file of the LilyPond music typesetter
+ source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include <math.h> // ceil
+#include "axis-group-interface.hh"
#include "note-column.hh"
-#include "debug.hh"
-#include "script.hh"
-#include "notehead.hh"
#include "stem.hh"
+#include "warn.hh"
+#include "paper-def.hh"
+#include "group-interface.hh"
+#include "staff-symbol-referencer.hh"
+#include "rest.hh"
+#include "note-head.hh"
+#include "accidental-placement.hh"
-IMPLEMENT_STATIC_NAME(Note_column);
+/*
+ TODO: figure out if we can prune this class. This is just an
+ annoying layer between (rest)collision & (note-head + stem)
+ */
-void
-Note_column::add(Stem*stem_l)
+bool
+Note_column::has_rests (Grob*me)
{
- stem_l_ = stem_l;
- add_support(stem_l);
+ return unsmob_grob (me->get_grob_property ("rest"));
}
-void
-Note_column::add(Notehead* n_l)
+int
+Note_column::shift_compare (Grob *const &p1, Grob *const&p2)
{
- assert(!n_l->rest_b_);
- head_l_arr_.push(n_l);
- add_support(n_l);
+ SCM s1 = p1->get_grob_property ("horizontal-shift");
+ SCM s2 = p2->get_grob_property ("horizontal-shift");
+
+ int h1 = (gh_number_p (s1))? gh_scm2int (s1) :0;
+ int h2 = (gh_number_p (s2)) ? gh_scm2int (s2):0;
+ return h1 - h2;
+}
+
+Item *
+Note_column::get_stem (Grob*me)
+{
+ SCM s = me->get_grob_property ("stem");
+ return unsmob_item (s);
+}
+
+Slice
+Note_column::head_positions_interval (Grob *me)
+{
+ Slice iv;
+
+ iv.set_empty ();
+
+ SCM h = me->get_grob_property ("note-heads");
+ for (; gh_pair_p (h); h = ly_cdr (h))
+ {
+ Grob *se = unsmob_grob (ly_car (h));
+
+ int j = int (Staff_symbol_referencer::get_position (se));
+ iv.unite (Slice (j,j));
+ }
+ return iv;
}
-Note_column::Note_column()
+Direction
+Note_column::dir (Grob* me)
{
- stem_l_ = 0;
- h_shift_b_ =false;
- dir_i_ =0;
+ Grob *stem = unsmob_grob (me->get_grob_property ("stem"));
+ if (stem && Stem::has_interface (stem))
+ return Stem::get_direction (stem);
+ else if (gh_pair_p (me->get_grob_property ("note-heads")))
+ return (Direction)sign (head_positions_interval (me).center ());
+
+ programming_error ("Note column without heads and stem!");
+ return CENTER;
}
+
void
-Note_column::sort()
+Note_column::set_stem (Grob*me,Grob * stem)
{
- head_l_arr_.sort( Notehead::compare);
+ me->set_grob_property ("stem", stem->self_scm ());
+ me->add_dependency (stem);
+ Axis_group_interface::add_element (me, stem);
}
-
-Interval_t<int>
-Note_column::head_positions_interval()const
+
+
+Grob*
+Note_column::get_rest (Grob*me)
{
- ( (Note_column*)this)->sort();
- return Interval_t<int> ( head_l_arr_[0]->position_i_,
- head_l_arr_.top()->position_i_);
+ return unsmob_grob (me->get_grob_property ("rest"));
+}
+
+void
+Note_column::add_head (Grob*me,Grob *h)
+{
+ bool both = false;
+ if (Rest::has_interface (h))
+ {
+ if (gh_pair_p (me->get_grob_property ("note-heads")))
+ both = true;
+ else
+ me->set_grob_property ("rest", h->self_scm ());
+ }
+ else if (Note_head::has_interface (h))
+ {
+ if (unsmob_grob (me->get_grob_property ("rest")))
+ both = true;
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-heads"),h);
+ }
+
+ if (both)
+ me->warning ("Can't have rests and note heads together on a stem.");
+ else
+ Axis_group_interface::add_element (me, h);
+}
+/**
+ translate the rest symbols vertically by amount DY, but only if
+ they have no staff-position set.
+*/
+void
+Note_column::translate_rests (Grob*me, int dy)
+{
+ Grob * r = unsmob_grob (me->get_grob_property ("rest"));
+ if (r && !gh_number_p (r->get_grob_property ("staff-position")))
+ {
+ r->translate_axis (dy * Staff_symbol_referencer::staff_space (r)/2.0, Y_AXIS);
+ }
}
void
-Note_column::do_pre_processing()
+Note_column::set_dotcol (Grob*me,Grob *d)
+{
+ Axis_group_interface::add_element (me, d);
+}
+
+
+
+
+Grob*
+Note_column::first_head (Grob*me)
{
- if (!dir_i_){
- if (stem_l_)
- dir_i_ = stem_l_->dir_i_;
- else
- dir_i_ = (head_positions_interval().center() >= 5) ? -1 : 1;
+ Grob * st = get_stem (me);
+ return st? Stem::first_head (st): 0;
+}
+
+
+/*
+ Return the first Accidentals grob that we find in a note-head.
+ */
+Grob*
+Note_column::accidentals (Grob *me)
+{
+ SCM heads = me->get_grob_property ("note-heads");
+ Grob * acc = 0;
+ for (;gh_pair_p (heads); heads =gh_cdr (heads))
+ {
+ Grob * h = unsmob_grob (gh_car (heads));
+ acc = h ? unsmob_grob (h->get_grob_property ("accidental-grob")) : 0;
+ if (acc)
+ break;
}
+
+ if (!acc)
+ return 0;
+
+ if (Accidental_placement::has_interface (acc->get_parent (X_AXIS)))
+ return acc->get_parent (X_AXIS);
+
+ /* compatibility. */
+ return acc;
}
+
+
+
+ADD_INTERFACE (Note_column,"note-column-interface",
+ "Stem and noteheads combined",
+ "arpeggio note-heads rest-collision rest horizontal-shift stem accidentals force-hshift");
+