source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include "moment.hh"
+
#include "paper-column.hh"
-#include "paper-score.hh"
-#include "debug.hh"
+
#include "axis-group-interface.hh"
-#include "spaceable-element.hh"
+#include "break-align-interface.hh"
+#include "font-interface.hh"
+#include "grob-array.hh"
+#include "lookup.hh"
+#include "lookup.hh"
+#include "moment.hh"
+#include "output-def.hh"
+#include "paper-score.hh"
+#include "pointer-group-interface.hh"
+#include "rhythmic-head.hh"
+#include "separation-item.hh"
+#include "skyline-pair.hh"
+#include "spaceable-grob.hh"
+#include "spring.hh"
+#include "string-convert.hh"
+#include "system.hh"
+#include "text-interface.hh"
+#include "warn.hh"
+
+Grob *
+Paper_column::clone () const
+{
+ return new Paper_column (*this);
+}
void
Paper_column::do_break_processing ()
{
- Spaceable_element::remove_interface(this);
Item::do_break_processing ();
}
int
-Paper_column::rank_i(Grob*me)
+Paper_column::get_rank (Grob const *me)
+{
+ return dynamic_cast<Paper_column const *> (me)->rank_;
+}
+
+System *
+Paper_column::get_system () const
{
- return dynamic_cast<Paper_column*> (me)->rank_i_;
+ return system_;
}
-Line_of_score*
-Paper_column::line_l() const
+void
+Paper_column::set_system (System *s)
{
- return line_l_;
+ system_ = s;
}
-Paper_column*
-Paper_column::column_l () const
+Paper_column *
+Paper_column::get_column () const
{
- return (Paper_column*)(this);
+ return (Paper_column *) (this);
}
Paper_column::Paper_column (SCM l)
- : Item (l) // guh.?
+ : Item (l)
+{
+ system_ = 0;
+ rank_ = -1;
+}
+
+Paper_column::Paper_column (Paper_column const &src)
+ : Item (src)
+{
+ system_ = 0;
+ rank_ = src.rank_;
+}
+
+int
+Paper_column::compare (Grob * const &a,
+ Grob * const &b)
{
- Axis_group_interface::set_interface (this);
- Axis_group_interface::set_axes (this, X_AXIS, X_AXIS);
- Spaceable_element::set_interface (this);
+ return sign (dynamic_cast<Paper_column*> (a)->rank_
+ - dynamic_cast<Paper_column*> (b)->rank_);
+}
- line_l_=0;
- rank_i_ = -1;
+bool
+Paper_column::less_than (Grob *const &a,
+ Grob *const &b)
+{
+ Paper_column *pa = dynamic_cast<Paper_column*> (a);
+ Paper_column *pb = dynamic_cast<Paper_column*> (b);
+
+ return pa->rank_ < pb->rank_;
}
Moment
-Paper_column::when_mom (Grob*me)
+Paper_column::when_mom (Grob *me)
{
- SCM m = me->get_grob_property ("when");
+ SCM m = me->get_property ("when");
+ if (Moment *when = unsmob_moment (m))
+ return *when;
+ return Moment (0);
+}
+
+bool
+Paper_column::is_musical (Grob *me)
+{
+ 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::is_used (Grob *me)
+{
+ extract_grob_set (me, "elements", elts);
+ if (elts.size ())
+ return true;
+
+ extract_grob_set (me, "bounded-by-me", bbm);
+ if (bbm.size ())
+ return true;
+
+ if (Paper_column::is_breakable (me))
+ return true;
+
+ if (to_boolean (me->get_property ("used")))
+ return true;
+ return false;
+}
+
+bool
+Paper_column::is_breakable (Grob *me)
+{
+ return scm_is_symbol (me->get_property ("line-break-permission"));
+}
+
+Real
+Paper_column::minimum_distance (Grob *left, Grob *right)
+{
+ Drul_array<Grob*> cols (left, right);
+ Drul_array<Skyline> skys = Drul_array<Skyline> (Skyline (RIGHT), Skyline (LEFT));
+
+ Direction d = LEFT;
+ do
+ {
+ Skyline_pair *sp = Skyline_pair::unsmob (cols[d]->get_property ("horizontal-skylines"));
+ if (sp)
+ skys[d] = (*sp)[-d];
+ }
+ while (flip (&d) != LEFT);
+
+ skys[RIGHT].merge (Separation_item::conditional_skyline (right, left));
+
+ return max (0.0, skys[LEFT].distance (skys[RIGHT]));
+}
+
+Interval
+Paper_column::break_align_width (Grob *me)
+{
+ Grob *p = me->get_parent (X_AXIS);
+
+ if (is_musical (me))
{
- return *unsmob_moment (m);
+ me->programming_error ("tried to get break-align-width of a non-musical column");
+ return Interval (0, 0) + me->relative_coordinate (p, X_AXIS);
}
- return s;
+
+ Grob *align = Pointer_group_interface::find_grob (me, ly_symbol2scm ("elements"),
+ Break_alignment_interface::has_interface);
+ if (!align)
+ return Interval (0, 0) + me->relative_coordinate (p, X_AXIS);
+
+ return align->extent (p, X_AXIS);
}
+
+/*
+ Print a vertical line and the rank number, to aid debugging.
+*/
+MAKE_SCHEME_CALLBACK (Paper_column, print, 1);
+SCM
+Paper_column::print (SCM p)
+{
+ Paper_column *me = dynamic_cast<Paper_column*> (unsmob_grob (p));
+
+ string r = to_string (Paper_column::get_rank (me));
+
+ Moment *mom = unsmob_moment (me->get_property ("when"));
+ string when = mom ? mom->to_string () : "?/?";
+
+ Font_metric *musfont = Font_interface::get_default_font (me);
+ SCM properties = Font_interface::text_font_alist_chain (me);
+
+ SCM scm_mol = Text_interface::interpret_markup (me->layout ()->self_scm (),
+ properties,
+ ly_string2scm (r));
+ SCM when_mol = Text_interface::interpret_markup (me->layout ()->self_scm (),
+ properties,
+ ly_string2scm (when));
+ Stencil t = *unsmob_stencil (scm_mol);
+ t.add_at_edge (Y_AXIS, DOWN, *unsmob_stencil (when_mol), 0.1);
+ 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)));
-bool
-Paper_column::musical_b () const
+ SCM small_letters = scm_cons (scm_acons (ly_symbol2scm ("font-size"),
+ scm_from_int (-6), SCM_EOL),
+ properties);
+
+ int j = 0;
+ for (SCM s = me->get_object ("ideal-distances");
+ scm_is_pair (s); s = scm_cdr (s))
+ {
+ Spring *sp = unsmob_spring (scm_caar (s));
+ if (!unsmob_grob (scm_cdar (s))
+ || !unsmob_grob (scm_cdar (s))->get_system ())
+ continue;
+
+ j++;
+ Real y = -j * 1 -3;
+ vector<Offset> pts;
+ pts.push_back (Offset (0, y));
+
+ Offset p2 (sp->distance (), y);
+ pts.push_back (p2);
+
+ Stencil id_stencil = Lookup::points_to_line_stencil (0.1, pts);
+ Stencil head (musfont->find_by_name ("arrowheads.open.01"));
+
+ SCM distance_stc = Text_interface::interpret_markup (me->layout ()->self_scm (),
+ small_letters,
+ ly_string2scm (String_convert::form_string ("%5.2lf", sp->distance ())));
+
+ id_stencil.add_stencil (unsmob_stencil (distance_stc)->translated (Offset (sp->distance ()/3, y+1)));
+ id_stencil.add_stencil (head.translated (p2));
+ id_stencil = id_stencil.in_color (0,0,1);
+ l.add_stencil (id_stencil);
+ }
+
+ for (SCM s = me->get_object ("minimum-distances");
+ scm_is_pair (s); s = scm_cdr (s))
+ {
+ Real dist = scm_to_double (scm_cdar (s));
+ Grob *other = unsmob_grob (scm_caar (s));
+ if (!other || other->get_system () != me->get_system ())
+ continue;
+
+ j++;
+
+ Real y = -j * 1.0 -3.5;
+ vector<Offset> pts;
+ pts.push_back (Offset (0, y));
+
+ Offset p2 (dist, y);
+ pts.push_back (p2);
+
+ Stencil id_stencil = Lookup::points_to_line_stencil (0.1, pts);
+ Stencil head (musfont->find_by_name ("arrowheads.open.0M1"));
+ head.translate_axis (y, Y_AXIS);
+ id_stencil.add_stencil (head);
+
+ SCM distance_stc = Text_interface::interpret_markup (me->layout ()->self_scm (),
+ small_letters,
+ ly_string2scm (String_convert::form_string ("%5.2lf",
+ dist)));
+
+ id_stencil.add_stencil (unsmob_stencil (distance_stc)->translated (Offset (dist/3, y-1)));
+
+
+ id_stencil = id_stencil.in_color (1,0,0);
+ l.add_stencil (id_stencil);
+ }
+ 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, because suicided spanners are still in
+ bounded-by-me
+
+ 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)
{
- SCM m = get_grob_property ("shortest-starter-duration");
- Moment s (0);
- if (unsmob_moment (m))
+ Grob *me = unsmob_grob (grob);
+
+ SCM bbm = me->get_object ("bounded-by-me");
+ Grob_array *ga = unsmob_grob_array (bbm);
+ if (!ga)
+ return SCM_UNSPECIFIED;
+
+ vector<Grob*> &array (ga->array_reference ());
+
+ for (vsize i = array.size (); i--;)
{
- s = *unsmob_moment (m);
+ Grob *g = array[i];
+
+ if (!g || !g->is_live ())
+ /* UGH . potentially quadratic. */
+ array.erase (array.begin () + i);
}
- return s != Moment(0);
+
+ return SCM_UNSPECIFIED;
}
+/* FIXME: This is a hack that we use to identify columns that used to
+ contain note-heads but whose note-heads were moved by one of the ligature
+ engravers. Once the ligature engravers are fixed to behave nicely, this
+ function can be removed.
+*/
bool
-Paper_column::used_b (Grob*me )
+Paper_column::is_extraneous_column_from_ligature (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"))
- ;
+ if (!is_musical (me))
+ return false;
+
+ // If all the note-heads that I think are my children actually belong
+ // to another column, then I am extraneous.
+ extract_grob_set (me, "elements", elts);
+ bool has_notehead = false;
+ for (vsize i = 0; i < elts.size (); i++)
+ {
+ if (Rhythmic_head::has_interface (elts[i]))
+ {
+ has_notehead = true;
+ if (dynamic_cast<Item*> (elts[i])->get_column () == me)
+ return false;
+ }
+ }
+ return has_notehead;
}
+
+
+ADD_INTERFACE (Paper_column,
+ "@code{Paper_column} objects form the top-most X@tie{}parents"
+ " for items. There are two types of columns: musical and"
+ " non-musical, to which musical and non-musical objects are"
+ " attached respectively. The spacing engine determines the"
+ " X@tie{}positions of these objects.\n"
+ "\n"
+ "They are numbered, the first (leftmost) is column@tie{}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.",
+
+ /* properties */
+ "between-cols "
+ "bounded-by-me "
+ "full-measure-extra-space "
+ "grace-spacing "
+ "labels "
+ "line-break-system-details "
+ "line-break-penalty "
+ "line-break-permission "
+ "maybe-loose "
+ "page-break-penalty "
+ "page-break-permission "
+ "page-turn-penalty "
+ "page-turn-permission "
+ "rhythmic-location "
+ "shortest-playing-duration "
+ "shortest-starter-duration "
+ "spacing "
+ "used "
+ "when "
+ );
+