/*
- single-malt-grouping-item.cc -- implement Separation_item
+ separation-item.cc -- implement Separation_item
source file of the GNU LilyPond music typesetter
- (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "separation-item.hh"
#include "paper-column.hh"
-#include "debug.hh"
+#include "warn.hh"
#include "group-interface.hh"
+#include "accidental-placement.hh"
void
-Separation_item::set_interface (Score_element*s)
+Separation_item::add_item (Grob*s,Item* i)
{
- s->set_extent_callback (0, X_AXIS);
- s->set_extent_callback (0, Y_AXIS);
+ assert (i);
+ Pointer_group_interface::add_grob (s, ly_symbol2scm ("elements"),i);
+ s->add_dependency (i);
}
void
-Separation_item::add_item (Score_element*s,Item* i)
+Separation_item::add_conditional_item (Grob* me , Grob *e)
{
- assert (i);
- Pointer_group_interface (s).add_element (i);
- s->add_dependency (i);
+ 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->get_column ();
+
+
+ for (SCM s = me->get_grob_property ("conditional-elements"); gh_pair_p (s); s = ly_cdr (s))
+ {
+ SCM elt = ly_car (s);
+ if (!unsmob_grob (elt))
+ continue;
+
+ Item *il = unsmob_item (elt);
+ 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*/
+ }
+
+ if (to_boolean (il->get_grob_property ("no-spacing-rods")))
+ {
+ continue;
+ }
+
+ if (Accidental_placement::has_interface (il))
+ {
+ w.unite (Accidental_placement::get_relevant_accidental_extent (il, pc, left));
+ }
+ }
+
+ SCM pad = me->get_grob_property ("padding");
+
+ w.widen (robust_scm2double (pad, 0.0));
+ return w;
}
Interval
-Separation_item::my_width (Score_element *me)
+Separation_item::width (Grob *me)
{
+ 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_elt_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
+ for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
{
- SCM elt = gh_car (s);
- if (!unsmob_element (elt))
+ SCM elt = ly_car (s);
+ if (!unsmob_grob (elt))
continue;
- Item *il = dynamic_cast<Item*> (unsmob_element (elt));
- if (pc != il->column_l ())
+ Item *il = unsmob_item (elt);
+ if (pc != il->get_column ())
{
/* this shouldn't happen, but let's continue anyway. */
- programming_error (_("Separation_item: I've been drinking too much"));
+ programming_error (_ ("Separation_item: I've been drinking too much"));
continue; /*UGH UGH*/
}
- if (to_boolean (il->get_elt_property ("no-spacing-rods")))
+ if (to_boolean (il->get_grob_property ("no-spacing-rods")))
{
continue;
}
- Interval iv (il->extent (X_AXIS));
- if (!iv.empty_b ())
+ Interval iv (il->extent (pc, X_AXIS));
+ if (!iv.is_empty ())
{
- Real off = il->relative_coordinate (pc, X_AXIS);
- w.unite (iv + off);
+ w.unite (iv);
}
}
+ SCM pad = me->get_grob_property ("padding");
+
+ w.widen (robust_scm2double (pad, 0.0));
+
+ 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;
+
+ 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;
+ }
+ }
+
+ 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");