source file of the GNU LilyPond music typesetter
- (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
Pointer_group_interface::add_grob (me, ly_symbol2scm ("conditional-elements"), e);
}
+/*
+ Return the width of ME given that we are considering the object on
+ the LEFT.
+ */
Interval
Separation_item::conditional_width (Grob * me, Grob * left)
{
Interval w = width (me);
-
+
Item *item = dynamic_cast<Item*> (me);
- Paper_column * pc = item->column_l ();
+ Paper_column * pc = item->get_column ();
for (SCM s = me->get_grob_property ("conditional-elements"); gh_pair_p (s); s = ly_cdr (s))
continue;
Item *il = unsmob_item (elt);
- if (pc != il->column_l ())
+ if (pc != il->get_column ())
{
/* this shouldn't happen, but let's continue anyway. */
programming_error (_ ("Separation_item: I've been drinking too much"));
SCM pad = me->get_grob_property ("padding");
- if (gh_number_p (pad))
- {
- w[RIGHT] += gh_scm2double (pad)/2;
- w[LEFT] -= gh_scm2double (pad)/2;
- }
+ w.widen (robust_scm2double (pad, 0.0));
return w;
}
Interval
Separation_item::width (Grob *me)
{
- SCM sw = me->get_grob_property ("extent-X");
- if (ly_number_pair_p (sw))
+ SCM sw = me->get_grob_property ("X-extent");
+ if (is_number_pair (sw))
{
return ly_scm2interval (sw);
}
Item *item = dynamic_cast<Item*> (me);
- Paper_column * pc = item->column_l ();
+ Paper_column * pc = item->get_column ();
Interval w;
for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
continue;
Item *il = unsmob_item (elt);
- if (pc != il->column_l ())
+ if (pc != il->get_column ())
{
/* this shouldn't happen, but let's continue anyway. */
programming_error (_ ("Separation_item: I've been drinking too much"));
}
Interval iv (il->extent (pc, X_AXIS));
- if (!iv.empty_b ())
+ if (!iv.is_empty ())
{
w.unite (iv);
}
SCM pad = me->get_grob_property ("padding");
- if (gh_number_p (pad))
- {
- w[RIGHT] += gh_scm2double (pad)/2;
- w[LEFT] -= gh_scm2double (pad)/2;
- }
-
+ w.widen (robust_scm2double (pad, 0.0));
- me->set_grob_property ("extent-X", ly_interval2scm (w));
-
+ me->set_grob_property ("X-extent", ly_interval2scm (w));
return w;
- // add this->offset_ ? this-> relative_coordinate ()?
}
+Interval
+Separation_item::relative_width (Grob * me, Grob * common)
+{
+ Interval iv = width (me);
+ return dynamic_cast<Item*>(me)->get_column ()->relative_coordinate (common, X_AXIS) + iv ;
+}
+/*
+ Try to find the break-aligned symbol in SEPARATION_ITEM that is
+ sticking out at direction D. The x size is put in LAST_EXT
+*/
+Grob*
+Separation_item::extremal_break_aligned_grob (Grob *separation_item, Direction d,
+ Interval * last_ext)
+{
+ Grob *col = dynamic_cast<Item*> (separation_item)->get_column ();
+ last_ext->set_empty ();
+ Grob *last_grob = 0;
+ for (SCM s = separation_item->get_grob_property ("elements");
+ gh_pair_p (s); s = gh_cdr (s))
+ {
+ Grob * break_item = unsmob_grob (gh_car (s));
+
+ if (!gh_symbol_p (break_item->get_grob_property ("break-align-symbol")))
+ continue;
-ADD_INTERFACE (Separation_item,"separation-item-interface",
- "Item that computes widths to generate spacing rods.
+ Interval ext = break_item->extent (col, X_AXIS);
-Calc dimensions for the Separating_group_spanner; this has to be
-an item to get dependencies correct. It can't be an grob_group
-since these usually are in a different X_group
-",
- "extent-X conditional-elements elements");
+ if (ext.is_empty ())
+ continue;
+ if (!last_grob
+ || (last_grob && d * (ext[d]- (*last_ext)[d]) > 0) )
+ {
+ *last_ext = ext;
+ last_grob = break_item;
+ }
+ }
+
+ return last_grob;
+}
+
+
+
+
+
+ADD_INTERFACE (Separation_item,"separation-item-interface",
+ "Item that computes widths to generate spacing rods.\n"
+"\n"
+"Calculate dimensions for the Separating_group_spanner; this has to be "
+"an item to get dependencies correct. "
+, "padding X-extent conditional-elements elements");