source file of the GNU LilyPond music typesetter
- (c) 1997--2002 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 "moment.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 "output-def.hh"
+Grob *
+Paper_column::clone (int count) const
+{
+ return new Paper_column (*this, count);
+}
-/*
- Paper_columns form the top-most item parent. (The Paper_columns X
- parent is Line_of_score, which is a spanner.)
-
- 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.
- Since many columns go unused, you should only use the rank field to
- get ordering information. Two adjacent columns may have
- non-adjacent numbers.
-
- */
+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 "
+ "page-penalty shortest-playing-duration shortest-starter-duration");
void
Paper_column::do_break_processing ()
Item::do_break_processing ();
}
+
int
-Paper_column::rank_i (Grob*me)
+Paper_column::get_rank (Grob*me)
{
- return dynamic_cast<Paper_column*> (me)->rank_i_;
+ return dynamic_cast<Paper_column*> (me)->rank_;
}
-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);
}
-Paper_column::Paper_column (SCM l)
- : Item (l) // guh.?
+Paper_column::Paper_column (SCM l, Object_key const*key)
+ : Item (l, key) // guh.?
{
- Axis_group_interface::set_interface (this);
- Axis_group_interface::set_axes (this, X_AXIS, X_AXIS);
- Spaceable_grob::set_interface (this);
+ system_ = 0;
+ rank_ = -1;
+}
+
- line_l_=0;
- rank_i_ = -1;
+Paper_column::Paper_column (Paper_column const& src, int count)
+ : Item (src, count)
+{
+ system_ = 0;
+ rank_ = count;
}
+
Moment
-Paper_column::when_mom (Grob*me)
+Paper_column::when_mom (Grob *me)
{
- SCM m = me->get_grob_property ("when");
- Moment s (0);
- if (unsmob_moment (m))
- {
- return *unsmob_moment (m);
- }
- return s;
+ SCM m = me->get_property ("when");
+ if (Moment *when = unsmob_moment (m))
+ return *when;
+ return Moment (0);
}
bool
-Paper_column::musical_b (Grob *me)
+Paper_column::is_musical (Grob *me)
{
- SCM m = me->get_grob_property ("shortest-starter-duration");
+ SCM m = me->get_property ("shortest-starter-duration");
Moment s (0);
if (unsmob_moment (m))
{
s = *unsmob_moment (m);
}
return s != Moment (0);
-
}
bool
-Paper_column::used_b (Grob*me)
+Paper_column::is_used (Grob*me)
{
- return gh_pair_p (me->get_grob_property ("elements")) || Item::breakable_b (me)
- || gh_pair_p (me->get_grob_property ("bounded-by-me"))
+ 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,brew_molecule,1);
+MAKE_SCHEME_CALLBACK (Paper_column,print,1);
SCM
-Paper_column::brew_molecule (SCM p)
+Paper_column::print (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);
+ 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);
- Molecule l = Lookup::filledbox (Box (Interval (-0.01, 0.01),
+ Stencil l = Lookup::filled_box (Box (Interval (-0.01, 0.01),
Interval (-2, -1)));
- t.add_molecule (l);
+ 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