-/*
- separation-item.cc -- implement Separation_item
-
+/*
+ separation-item.cc -- implement Separation_item
+
source file of the GNU LilyPond music typesetter
-
- (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+
+ (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
#include "separation-item.hh"
+
#include "paper-column.hh"
#include "warn.hh"
-#include "group-interface.hh"
+#include "pointer-group-interface.hh"
#include "accidental-placement.hh"
void
-Separation_item::add_item (Grob*s,Item* i)
+Separation_item::add_item (Grob *s, Item *i)
{
assert (i);
- Pointer_group_interface::add_grob (s, ly_symbol2scm ("elements"),i);
- s->add_dependency (i);
+ Pointer_group_interface::add_grob (s, ly_symbol2scm ("elements"), i);
}
void
-Separation_item::add_conditional_item (Grob* me , Grob *e)
+Separation_item::add_conditional_item (Grob *me, Grob *e)
{
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)
+Separation_item::conditional_width (Grob *me, Grob *left)
{
Interval w = width (me);
-
- Item *item = dynamic_cast<Item*> (me);
- Paper_column * pc = item->get_column ();
-
-
- for (SCM s = me->get_grob_property ("conditional-elements"); gh_pair_p (s); s = ly_cdr (s))
+
+ Item *item = dynamic_cast<Item *> (me);
+ Paper_column *pc = item->get_column ();
+
+ extract_grob_set (me, "conditional-elements", elts);
+ for (int i = 0; i < elts.size (); i++)
{
- SCM elt = ly_car (s);
- if (!unsmob_grob (elt))
- continue;
-
- Item *il = unsmob_item (elt);
+ Item *il = dynamic_cast<Item *> (elts[i]);
if (pc != il->get_column ())
{
/* this shouldn't happen, but let's continue anyway. */
- programming_error (_ ("Separation_item: I've been drinking too much"));
- continue; /*UGH UGH*/
+ programming_error ("Separation_item: I've been drinking too much");
+ continue; /*UGH UGH*/
}
- if (to_boolean (il->get_grob_property ("no-spacing-rods")))
- {
- continue;
- }
+ if (to_boolean (il->get_property ("no-spacing-rods")))
+ continue;
if (Accidental_placement::has_interface (il))
- {
- w.unite (Accidental_placement::get_relevant_accidental_extent (il, pc, left));
- }
+ w.unite (Accidental_placement::get_relevant_accidental_extent (il, pc, left));
}
- SCM pad = me->get_grob_property ("padding");
+ SCM pad = me->get_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 ("X-extent");
- if (ly_number_pair_p (sw))
- {
- return ly_scm2interval (sw);
- }
+ SCM sw = me->get_property ("X-extent");
+ if (is_number_pair (sw))
+ return ly_scm2interval (sw);
- Item *item = dynamic_cast<Item*> (me);
- Paper_column * pc = item->get_column ();
+ Item *item = dynamic_cast<Item *> (me);
+ Paper_column *pc = item->get_column ();
Interval w;
-
- for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
- {
- SCM elt = ly_car (s);
- if (!unsmob_grob (elt))
- continue;
- Item *il = unsmob_item (elt);
+ extract_grob_set (me, "elements", elts);
+ for (int i = 0; i < elts.size (); i++)
+ {
+ Item *il = dynamic_cast<Item *> (elts[i]);
if (pc != il->get_column ())
{
/* this shouldn't happen, but let's continue anyway. */
- programming_error (_ ("Separation_item: I've been drinking too much"));
- continue; /*UGH UGH*/
+ programming_error ("Separation_item: I've been drinking too much");
+ continue; /*UGH UGH*/
}
- if (to_boolean (il->get_grob_property ("no-spacing-rods")))
- {
- continue;
- }
+ if (to_boolean (il->get_property ("no-spacing-rods")))
+ continue;
Interval iv (il->extent (pc, X_AXIS));
- if (!iv.empty_b ())
- {
- w.unite (iv);
- }
+ if (!iv.is_empty ())
+ w.unite (iv);
}
- SCM pad = me->get_grob_property ("padding");
+ SCM pad = me->get_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_property ("X-extent", 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 *me,
+ Direction d,
+ Interval *last_ext)
+{
+ Grob *col = dynamic_cast<Item *> (me)->get_column ();
+ last_ext->set_empty ();
+ Grob *last_grob = 0;
+
+ extract_grob_set (me, "elements", elts);
+ for (int i = elts.size (); i--;)
+ {
+ Grob *break_item = elts[i];
+ if (!scm_is_symbol (break_item->get_property ("break-align-symbol")))
+ continue;
+
+ if (!scm_is_pair (break_item->get_property ("space-alist")))
+ continue;
+ Interval ext = break_item->extent (col, X_AXIS);
+ if (ext.is_empty ())
+ continue;
+ if (!last_grob
+ || (last_grob && d * (ext[d]- (*last_ext)[d]) > 0))
+ {
+ *last_ext = ext;
+ last_grob = break_item;
+ }
+ }
-ADD_INTERFACE (Separation_item,"separation-item-interface",
- "Item that computes widths to generate spacing rods.
+ return last_grob;
+}
-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
-",
- "X-extent conditional-elements elements");
+ADD_INTERFACE (Separation_item, "separation-item-interface",
+ "Item that computes widths to generate spacing rods. "
+ "This is done in concert with @ref{separation-spanner-interface}.",
+ "padding X-extent conditional-elements elements");
projects / lilypond.git / blobdiff