source file of the GNU LilyPond music typesetter
- (c) 1997--2000 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 "stencil.hh"
+#include "text-item.hh"
+#include "lookup.hh"
+#include "font-interface.hh"
+#include "output-def.hh"
+
+
+
+
+ADD_INTERFACE (Paper_column, "paper-column-interface",
+ "@code{Paper_column} objects form the top-most X-parents for items. "
+ " The are two types of columns: musical columns, where are attached to, and "
+ " non-musical columns, where bar-lines, clefs etc. are attached to. "
+ " The spacing engine determines the X-positions of these objects."
+ "\n\n"
+ "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"
+ " 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"
+ ,
+ "between-cols 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 != 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;
-
- minimal_dists_.push (cr);
+ Spaceable_grob::remove_interface (this);
+ Item::do_break_processing ();
}
-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;
- }
-
- 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
+Paper_column::get_rank (Grob*me)
{
- return rank_i_;
+ return dynamic_cast<Paper_column*> (me)->rank_;
}
-void
-Paper_column::set_rank (int i)
-{
- rank_i_ = i;
-}
-
-
-
-Line_of_score*
-Paper_column::line_l() const
+System*
+Paper_column::get_system () const
{
- return line_l_;
+ return system_;
}
Paper_column*
-Paper_column::column_l () const
+Paper_column::get_column () const
{
- return (Paper_column*)(this);
+ return (Paper_column*) (this);
}
-Paper_column::Paper_column (Moment w)
- : Item (SCM_EOL)
+Paper_column::Paper_column (SCM l)
+ : Item (l) // guh.?
{
- SCM when = (new Moment (w))->smobify_self ();
- scm_unprotect_object (when);
- set_elt_property ("when", when);
-
- Axis_group_interface (this).set_interface ();
- Axis_group_interface (this).set_axes (X_AXIS, X_AXIS);
-
- line_l_=0;
- rank_i_ = -1;
+ system_ = 0;
+ rank_ = -1;
}
Moment
-Paper_column::when_mom () const
+Paper_column::when_mom (Grob*me)
{
- SCM m = get_elt_property ("when");
+ SCM m = me->get_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::is_musical (Grob *me)
{
- SCM m = get_elt_property ("shortest-starter-duration");
+ SCM m = me->get_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::is_used (Grob*me)
{
- return gh_pair_p (get_elt_pointer ("elements")) || breakable_b ();
+ return scm_is_pair (me->get_property ("elements")) || Item::is_breakable (me)
+ || scm_is_pair (me->get_property ("bounded-by-me"))
+ ;
+}
+
+/*
+ Print a vertical line and the rank number, to aid debugging.
+ */
+
+MAKE_SCHEME_CALLBACK (Paper_column,print,1);
+SCM
+Paper_column::print (SCM p)
+{
+ Grob *me = unsmob_grob (p);
+
+ String r = to_string (Paper_column::get_rank (me));
+ SCM properties = Font_interface::text_font_alist_chain (me);
+
+ SCM scm_mol = Text_interface::interpret_markup (me->get_layout ()->self_scm (),
+ properties,
+ scm_makfrom0str (r.to_str0 ()));
+ Stencil t = *unsmob_stencil (scm_mol);
+ t.align_to (X_AXIS, CENTER);
+ t.align_to (Y_AXIS, DOWN);
+
+ Stencil l = Lookup::filled_box (Box (Interval (-0.01, 0.01),
+ Interval (-2, -1)));
+
+ t.add_stencil (l);
+ return t.smobbed_copy ();
+}
+
+/*
+ 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.
+ */
+MAKE_SCHEME_CALLBACK (Paper_column,before_line_breaking,1);
+SCM
+Paper_column::before_line_breaking (SCM grob)
+{
+ Grob *me = unsmob_grob (grob);
+
+ SCM c = me->get_property ("bounded-by-me");
+ SCM *ptrptr = &c;
+
+ while (scm_is_pair (*ptrptr))
+ {
+ Grob * g = unsmob_grob (scm_car (*ptrptr));
+
+ if (!g || !g->is_live ())
+ {
+ *ptrptr = scm_cdr (*ptrptr);
+ }
+ else
+ {
+ ptrptr = SCM_CDRLOC (*ptrptr);
+ }
+ }
+
+ me->set_property ("bounded-by-me", c);
+ return SCM_UNSPECIFIED;
}
projects / lilypond.git / blobdiff