source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include "moment.hh"
#include "paper-column.hh"
#include "paper-score.hh"
-#include "debug.hh"
+#include "warn.hh"
+#include "axis-group-interface.hh"
+#include "spaceable-grob.hh"
+#include "molecule.hh"
+#include "text-item.hh"
+#include "lookup.hh"
+#include "font-interface.hh"
+#include "paper-def.hh"
+
+
+
+
+ADD_INTERFACE (Paper_column, "paper-column-interface",
+ " Paper_columns form the top-most item parent. (The Paper_columns X\n"
+" parent is System, which is a spanner.)\n"
+"\n"
+" Paper_columns form the units for the spacing engine. They are\n"
+" numbered, the first (leftmost) is column 0. Numbering happens before\n"
+" line-breaking, and columns are not renumbered after line breaking.\n"
+"\n"
+" Since many columns go unused, you should only use the rank field to\n"
+" get ordering information. Two adjacent columns may have\n"
+" non-adjacent numbers.\n"
+"\n"
+" Don't be confused by right-items: each spacing wish can also contain\n"
+" a number of items, with which a spacing constraint may be kept. It's\n"
+" a little baroque, but it might come in handy later on?\n"
+"\n",
+ "between-cols between-system-string when bounded-by-me shortest-playing-duration shortest-starter-duration");
+
void
-Paper_column::add_rod (Paper_column * p, Real d)
+Paper_column::do_break_processing ()
{
- Direction dir = Direction (sign (p->rank_i () - rank_i ()));
-
- if (!dir)
- {
- programming_error ("Must set minimum distance between differing columns.");
- return;
- }
-
- for (int i=0; i < minimal_dists_arr_drul_[dir].size (); i++)
- {
- Column_rod &rod = minimal_dists_arr_drul_[dir][i];
- if (rod.other_l_ == p)
- {
- rod.distance_f_ = rod.distance_f_ >? d;
- return ;
- }
- }
+ Spaceable_grob::remove_interface (this);
+ Item::do_break_processing ();
+}
- Column_rod cr;
- cr.distance_f_ = d;
- cr.other_l_ = p;
- minimal_dists_arr_drul_[dir].push (cr);
+int
+Paper_column::get_rank (Grob*me)
+{
+ return dynamic_cast<Paper_column*> (me)->rank_;
}
-void
-Paper_column::add_spring (Paper_column * p, Real d, Real s)
+System*
+Paper_column::get_system () const
{
- Direction dir = Direction (sign (p->rank_i () - rank_i ()));
-
- if (!dir)
- {
- warning (_ ("Must set spring between differing columns"));
- return;
- }
-
- for (int i=0; i < spring_arr_drul_[dir].size (); i++)
- {
- Column_spring &spring = spring_arr_drul_[dir][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;
-
- spring_arr_drul_[dir].push (cr);
+ return system_;
}
-int
-Paper_column::rank_i() const
+Paper_column*
+Paper_column::get_column () const
{
- return rank_i_;
+ return (Paper_column*) (this);
}
-void
-Paper_column::set_rank (int i)
+Paper_column::Paper_column (SCM l)
+ : Item (l) // guh.?
{
- rank_i_ = i;
+ system_=0;
+ rank_ = -1;
}
-void
-Paper_column::do_print() const
+Moment
+Paper_column::when_mom (Grob*me)
{
-#ifndef NPRINT
- DOUT << "rank: " << rank_i_ << '\n';
- Direction d = LEFT;
- do
+ SCM m = me->get_grob_property ("when");
+ Moment s (0);
+ if (unsmob_moment (m))
{
- for (int i=0; i < minimal_dists_arr_drul_[d].size (); i++)
- {
- minimal_dists_arr_drul_[d][i].print ();
- }
- for (int i=0; i < spring_arr_drul_[d].size (); i++)
- {
- spring_arr_drul_[d][i].print ();
- }
-
+ return *unsmob_moment (m);
}
- while ((flip (&d))!=LEFT);
- Item::do_print ();
-#endif
+ return s;
}
bool
-Paper_column::breakpoint_b() const
+Paper_column::musical_b (Grob *me)
{
- return !line_l_;
+ SCM m = me->get_grob_property ("shortest-starter-duration");
+ Moment s (0);
+ if (unsmob_moment (m))
+ {
+ s = *unsmob_moment (m);
+ }
+ return s != Moment (0);
+
}
+
-Paper_column::Paper_column()
+bool
+Paper_column::used_b (Grob*me)
{
- set_axes (X_AXIS, X_AXIS);
-
- line_l_=0;
- rank_i_ = -1;
+ return gh_pair_p (me->get_grob_property ("elements")) || Item::breakable_b (me)
+ || gh_pair_p (me->get_grob_property ("bounded-by-me"))
+ ;
}
-Line_of_score*
-Paper_column::line_l() const
-{
- return line_l_;
-}
+/*
+ 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_string (Paper_column::get_rank (me));
+ SCM properties = Font_interface::font_alist_chain (me);
+ SCM scm_mol = Text_item::interpret_markup (me->get_paper ()->self_scm (),
+ properties,
+ scm_makfrom0str (r.to_str0 ()));
+ Molecule t = *unsmob_molecule (scm_mol);
+ t.align_to (X_AXIS, CENTER);
+ t.align_to (Y_AXIS, DOWN);
+
+ Molecule l = Lookup::filled_box (Box (Interval (-0.01, 0.01),
+ Interval (-2, -1)));
-Paper_column*
-Paper_column::column_l () const
-{
- return (Paper_column*)(this);
+ t.add_molecule (l);
+ return t.smobbed_copy ();
}
/*
- ugh.
+ This is all too hairy. We use bounded-by-me to make sure that some
+ columns are kept "alive". Unfortunately, when spanners are suicided,
+ this falls apart again. (sigh.)
+
+ THIS IS BROKEN KLUDGE. WE SHOULD INVENT SOMETHING BETTER.
*/
-void
-Paper_column::preprocess ()
+MAKE_SCHEME_CALLBACK(Paper_column,before_line_breaking,1);
+SCM
+Paper_column::before_line_breaking (SCM grob)
{
- minimal_dists_arr_drul_[LEFT].sort (Column_rod::compare);
- minimal_dists_arr_drul_[RIGHT].sort (Column_rod::compare);
- spring_arr_drul_[LEFT].sort (Column_spring::compare);
- spring_arr_drul_[RIGHT].sort (Column_spring::compare);
+ Grob *me = unsmob_grob (grob);
+
+ SCM c = me->get_grob_property ("bounded-by-me");
+ SCM *ptrptr = &c;
+
+ while (gh_pair_p (*ptrptr))
+ {
+ Grob * g = unsmob_grob (gh_car (*ptrptr));
+
+ if (!g || !g->live ())
+ {
+ *ptrptr = gh_cdr (*ptrptr);
+ }
+ else
+ {
+ ptrptr = SCM_CDRLOC (*ptrptr);
+ }
+ }
+
+ me->set_grob_property ("bounded-by-me", c);
+ return SCM_UNSPECIFIED;
}