source file of the GNU LilyPond music typesetter
- (c) 1998--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "separation-item.hh"
+#include "skyline.hh"
#include "paper-column.hh"
#include "warn.hh"
#include "pointer-group-interface.hh"
Pointer_group_interface::add_grob (me, ly_symbol2scm ("conditional-elements"), e);
}
+void
+Separation_item::set_skyline_distance (Drul_array<Item *> items,
+ Real padding)
+{
+ Drul_array<Skyline*> lines;
+ Direction d = LEFT;
+
+ do
+ {
+ SCM prop = items[d]->get_property ("skylines");
+ lines[d] = Skyline::unsmob (index_get_cell (prop, -d));
+ }
+ while (flip (&d) != LEFT);
+
+ Real dist = padding + lines[LEFT]->distance (*lines[RIGHT]);
+ if (dist > 0)
+ {
+ Rod rod;
+
+ rod.item_drul_ = items;
+
+ rod.distance_ = dist;
+ rod.add_to_cols ();
+ }
+}
+
+bool
+Separation_item::set_distance (Drul_array<Item *> items,
+ Real padding)
+{
+ if (!Item::is_non_musical (items[LEFT])
+ && !Item::is_non_musical (items[RIGHT]))
+ {
+ set_skyline_distance (items, padding);
+ return true;
+ }
+
+ Interval li (Separation_item::width (items[LEFT]));
+ Interval ri (Separation_item::conditional_width (items[RIGHT], items[LEFT]));
+ if (!li.is_empty () && !ri.is_empty ())
+ {
+ Rod rod;
+
+ rod.item_drul_ = items;
+
+ rod.distance_ = li[RIGHT] - ri[LEFT] + padding;
+
+ if (rod.distance_ > 0)
+ rod.add_to_cols ();
+ return true;
+ }
+ return false;
+}
+
/*
Return the width of ME given that we are considering the object on
the LEFT.
Paper_column *pc = item->get_column ();
extract_grob_set (me, "conditional-elements", elts);
- for (int i = 0; i < elts.size (); i++)
+ for (vsize i = 0; i < elts.size (); i++)
{
- Item *il = dynamic_cast<Item*> (elts[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 element from wrong column");
+ continue;
}
if (to_boolean (il->get_property ("no-spacing-rods")))
- {
- continue;
- }
+ 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_property ("padding");
return w;
}
+
+MAKE_SCHEME_CALLBACK(Separation_item,calc_skylines,1);
+SCM
+Separation_item::calc_skylines (SCM smob)
+{
+ Item *me = unsmob_item (smob);
+ SCM lines = scm_cons (SCM_BOOL_F,SCM_BOOL_F);
+
+ Direction d = LEFT;
+ vector<Box> bs = boxes (me);
+ do
+ {
+ /* todo: the horizon_padding is somewhat arbitrary */
+ Skyline l (bs, 0.1, Y_AXIS, d);
+ index_set_cell (lines, d, l.smobbed_copy ());
+ }
+ while (flip (&d) != LEFT);
+
+ return lines;
+}
+
+
+vector<Box>
+Separation_item::boxes (Grob *me)
+{
+ Item *item = dynamic_cast<Item *> (me);
+
+ int very_large = INT_MAX;
+ Paper_column *pc = item->get_column ();
+ vector<Box> out;
+ extract_grob_set (me, "elements", elts);
+
+ Grob *ycommon = common_refpoint_of_array (elts, me, Y_AXIS);
+
+ for (vsize i = 0; i < elts.size (); i++)
+ {
+ Item *il = dynamic_cast<Item *> (elts[i]);
+ if (pc != il->get_column ())
+ {
+ continue;
+ }
+
+ if (to_boolean (il->get_property ("no-spacing-rods")))
+ continue;
+
+ Interval y (il->pure_height (ycommon, 0, very_large));
+ Box b (il->extent (pc, X_AXIS), y);
+
+ out.push_back (b);
+ }
+
+ return out;
+}
+
Interval
Separation_item::width (Grob *me)
{
SCM sw = me->get_property ("X-extent");
if (is_number_pair (sw))
- {
- return ly_scm2interval (sw);
- }
+ return ly_scm2interval (sw);
Item *item = dynamic_cast<Item *> (me);
Paper_column *pc = item->get_column ();
Interval w;
extract_grob_set (me, "elements", elts);
- for (int i = 0; i < elts.size (); i++)
+ for (vsize i = 0; i < elts.size (); i++)
{
- Item *il = dynamic_cast<Item*> (elts[i]);
+ Item *il = dynamic_cast<Item *> (elts[i]);
if (pc != il->get_column ())
{
/* this shouldn't happen, but let's continue anyway. */
}
if (to_boolean (il->get_property ("no-spacing-rods")))
- {
- continue;
- }
+ continue;
Interval iv (il->extent (pc, X_AXIS));
if (!iv.is_empty ())
- {
- w.unite (iv);
- }
+ w.unite (iv);
}
SCM pad = me->get_property ("padding");
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--; )
+ for (vsize 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 ())
return last_grob;
}
-ADD_INTERFACE (Separation_item, "separation-item-interface",
+ADD_INTERFACE (Separation_item,
"Item that computes widths to generate spacing rods. "
- "This is done in concert with @ref{separation-spanner-interface}.",
- "padding X-extent conditional-elements elements");
+ "This is done in concert with @ref{separating-group-spanner-interface}.",
+
+ "X-extent "
+ "conditional-elements "
+ "elements "
+ "padding "
+ "skylines "
+ );
projects / lilypond.git / blobdiff