source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+
#include "moment.hh"
#include "paper-column.hh"
#include "paper-score.hh"
#include "debug.hh"
#include "axis-group-interface.hh"
+#include "spaceable-grob.hh"
+#include "molecule.hh"
+#include "text-item.hh"
+#include "lookup.hh"
+#include "font-interface.hh"
-void
-Paper_column::add_rod (Paper_column * p, Real d)
-{
- Direction dir = Direction (sign (p->rank_i () - rank_i ()));
-
- if (dir != RIGHT)
- {
- programming_error ("Must set minimum distance LTOR.");
- return;
- }
-
- for (int i=0; i < minimal_dists_.size (); i++)
- {
- Column_rod &rod = minimal_dists_[i];
- if (rod.other_l_ == p)
- {
- rod.distance_f_ = rod.distance_f_ >? d;
- return ;
- }
- }
- Column_rod cr;
- cr.distance_f_ = d;
- cr.other_l_ = p;
+/*
+ Paper_columns form the top-most item parent. (The Paper_columns X
+ parent is Line_of_score, which is a spanner.)
- minimal_dists_.push (cr);
-}
+ Paper_columns form the units for the spacing engine. They are
+ numbered, the first (leftmost) is column 0. Numbering happens before
+ line-breaking, and columns are not renumbered after line breaking.
-void
-Paper_column::add_spring (Paper_column * p, Real d, Real s)
-{
- Direction dir = Direction (sign (p->rank_i () - rank_i ()));
-
- if (dir != RIGHT)
- {
- programming_error ("Must set springs LTOR");
- return;
- }
+ Since many columns go unused, you should only use the rank field to
+ get ordering information. Two adjacent columns may have
+ non-adjacent numbers.
- for (int i=0; i < springs_.size (); i++)
- {
- Column_spring &spring = springs_[i];
- if (spring.other_l_ == p)
- {
- spring.distance_f_ = spring.distance_f_ >? d;
- return ;
- }
- }
-
- Column_spring cr;
- cr.distance_f_ = d;
- cr.strength_f_ = s;
- cr.other_l_ = p;
-
- springs_.push (cr);
-}
+ */
-int
-Paper_column::rank_i() const
+void
+Paper_column::do_break_processing ()
{
- return rank_i_;
+ Spaceable_grob::remove_interface (this);
+ Item::do_break_processing ();
}
-void
-Paper_column::set_rank (int i)
+int
+Paper_column::rank_i (Grob*me)
{
- rank_i_ = i;
+ return dynamic_cast<Paper_column*> (me)->rank_i_;
}
-
-
Line_of_score*
-Paper_column::line_l() const
+Paper_column::line_l () const
{
return line_l_;
}
Paper_column*
Paper_column::column_l () const
{
- return (Paper_column*)(this);
+ return (Paper_column*) (this);
}
Paper_column::Paper_column (SCM l)
: Item (l) // guh.?
{
- Axis_group_interface (this).set_interface ();
- Axis_group_interface (this).set_axes (X_AXIS, X_AXIS);
- set_elt_pointer ("bounded-by-me", SCM_EOL);
+ Axis_group_interface::set_interface (this);
+ Axis_group_interface::set_axes (this, X_AXIS, X_AXIS);
+ Spaceable_grob::set_interface (this);
+
line_l_=0;
rank_i_ = -1;
}
Moment
-Paper_column::when_mom () const
+Paper_column::when_mom (Grob*me)
{
- SCM m = get_elt_property ("when");
+ SCM m = me->get_grob_property ("when");
Moment s (0);
- if (SMOB_IS_TYPE_B(Moment, m))
+ if (unsmob_moment (m))
{
- s = *SMOB_TO_TYPE (Moment,m);
+ return *unsmob_moment (m);
}
return s;
}
-
+
bool
-Paper_column::musical_b () const
+Paper_column::musical_b (Grob *me)
{
- SCM m = get_elt_property ("shortest-starter-duration");
+ SCM m = me->get_grob_property ("shortest-starter-duration");
Moment s (0);
- if (SMOB_IS_TYPE_B(Moment, m))
+ if (unsmob_moment (m))
{
- s = *SMOB_TO_TYPE (Moment,m);
+ s = *unsmob_moment (m);
}
- return s != Moment(0);
+ return s != Moment (0);
+
}
+
bool
-Paper_column::used_b ()const
+Paper_column::used_b (Grob*me)
{
- return gh_pair_p (get_elt_pointer ("elements")) || breakable_b ()
- || gh_pair_p (get_elt_pointer ("bounded-by-me"))
+ return gh_pair_p (me->get_grob_property ("elements")) || Item::breakable_b (me)
+ || gh_pair_p (me->get_grob_property ("bounded-by-me"))
;
}
+
+/*
+ Print a vertical line and the rank number, to aid debugging.
+ */
+
+MAKE_SCHEME_CALLBACK(Paper_column,brew_molecule,1);
+SCM
+Paper_column::brew_molecule (SCM p)
+{
+ Grob *me = unsmob_grob (p);
+
+ String r = to_str (Paper_column::rank_i (me));
+ SCM properties = Font_interface::font_alist_chain (me);
+
+ Molecule t = Text_item::text2molecule (me, ly_str02scm (r.ch_C()),
+ properties);
+ t.align_to (X_AXIS, CENTER);
+ t.align_to (Y_AXIS, DOWN);
+
+ Molecule l = Lookup::filledbox (Box (Interval (-0.01, 0.01),
+ Interval (-2, -1)));
+
+ t.add_molecule (l);
+ return t.smobbed_copy ();
+}
+