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_pair*> lines (Skyline_pair::unsmob (items[LEFT]->get_property ("skylines")),
+ Skyline_pair::unsmob (items[RIGHT]->get_property ("skylines")));
+ Skyline right = conditional_skyline (items[RIGHT], items[LEFT]);
+ right.merge ((*lines[RIGHT])[LEFT]);
+
+ Real dist = padding + (*lines[LEFT])[RIGHT].distance (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)
+{
+ set_skyline_distance (items, padding);
+ return true;
+}
+
/*
Return the width of ME given that we are considering the object on
the LEFT.
*/
-Interval
-Separation_item::conditional_width (Grob *me, Grob *left)
+Skyline
+Separation_item::conditional_skyline (Grob *me, Grob *left)
{
- Interval w = width (me);
+ vector<Box> bs = boxes (me, left);
+ return Skyline (bs, 0.1, Y_AXIS, LEFT);
+}
+
+
+MAKE_SCHEME_CALLBACK(Separation_item,calc_skylines,1);
+SCM
+Separation_item::calc_skylines (SCM smob)
+{
+ Item *me = unsmob_item (smob);
+ vector<Box> bs = boxes (me, 0);
+ /* todo: the horizon_padding is somewhat arbitrary */
+ return Skyline_pair (bs, 0.1, Y_AXIS).smobbed_copy ();
+}
+/* if left is non-NULL, get the boxes corresponding to the
+ conditional-elements (conditioned on the grob LEFT). This
+ sounds more general than it is: conditional-elements are
+ always accidentals attached to a tied note.
+*/
+vector<Box>
+Separation_item::boxes (Grob *me, Grob *left)
+{
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++)
+ int very_large = INT_MAX;
+ Paper_column *pc = item->get_column ();
+ vector<Box> out;
+ extract_grob_set (me, left ? "conditional-elements" : "elements", read_only_elts);
+ vector<Grob*> elts;
+
+ if (left)
+ elts = Accidental_placement::get_break_reminder_accidentals (read_only_elts, left);
+ else
+ elts = read_only_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 ())
{
- /* this shouldn't happen, but let's continue anyway. */
- programming_error ("Separation_item: I've been drinking too much");
- continue; /*UGH UGH*/
+ 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));
- }
+ Interval y (il->pure_height (ycommon, 0, very_large));
+ Interval x (il->extent (pc, X_AXIS));
- SCM pad = me->get_property ("padding");
+ SCM padding = elts[i]->get_property ("padding");
+ x.widen (robust_scm2double (padding, 0));
+
+ out.push_back (Box (x, y));
+ }
- w.widen (robust_scm2double (pad, 0.0));
- return w;
+ return out;
}
Interval
Separation_item::width (Grob *me)
{
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 ();
- Interval w;
-
- 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*/
- }
-
- if (to_boolean (il->get_property ("no-spacing-rods")))
- continue;
-
- Interval iv (il->extent (pc, X_AXIS));
- if (!iv.is_empty ())
- w.unite (iv);
- }
-
- SCM pad = me->get_property ("padding");
-
- w.widen (robust_scm2double (pad, 0.0));
-
- me->set_property ("X-extent", ly_interval2scm (w));
-
- return w;
+ return ly_scm2interval (sw);
}
Interval
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")))
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