-/*
- single-malt-grouping-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 "skyline.hh"
#include "paper-column.hh"
-#include "debug.hh"
-#include "group-interface.hh"
+#include "warn.hh"
+#include "pointer-group-interface.hh"
+#include "accidental-placement.hh"
void
-Separation_item::set_interface (Grob*s)
+Separation_item::add_item (Grob *s, Item *i)
{
- s->set_extent_callback (SCM_EOL, X_AXIS);
- s->set_extent_callback (SCM_EOL, Y_AXIS);
+ assert (i);
+ Pointer_group_interface::add_grob (s, ly_symbol2scm ("elements"), i);
}
void
-Separation_item::add_item (Grob*s,Item* i)
+Separation_item::add_conditional_item (Grob *me, Grob *e)
{
- assert (i);
- Pointer_group_interface::add_grob (s, ly_symbol2scm ("elements"),i);
- s->add_dependency (i);
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("conditional-elements"), e);
}
-Interval
-Separation_item::my_width (Grob *me)
+void
+Separation_item::set_skyline_distance (Drul_array<Item *> items,
+ Real padding)
{
- Item *item = dynamic_cast<Item*> (me);
- Paper_column * pc = item->column_l ();
- Interval w;
+ 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;
+ }
- for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
+ Interval li (Separation_item::width (items[LEFT]));
+ Interval ri (Separation_item::conditional_width (items[RIGHT], items[LEFT]));
+ if (!li.is_empty () && !ri.is_empty ())
{
- SCM elt = ly_car (s);
- if (!unsmob_grob (elt))
- continue;
+ Rod rod;
+
+ rod.item_drul_ = items;
- Item *il = unsmob_item (elt);
- if (pc != il->column_l ())
+ 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.
+*/
+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 ();
+
+ extract_grob_set (me, "conditional-elements", elts);
+ 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*/
+ programming_error ("Separation_item element from wrong column");
+ continue;
}
- if (to_boolean (il->get_grob_property ("no-spacing-rods")))
+ 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));
+ }
+
+ SCM pad = me->get_property ("padding");
+
+ w.widen (robust_scm2double (pad, 0.0));
+ 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
+ {
+ Skyline l (bs, 0, 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;
}
- Interval iv (il->extent (pc, X_AXIS));
- if (!iv.empty_b ())
+ if (to_boolean (il->get_property ("no-spacing-rods")))
+ continue;
+
+ Interval y (il->pure_height (ycommon, 0, very_large));
+ y.widen (0.1); // fixme
+ 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);
+
+ Item *item = dynamic_cast<Item *> (me);
+ Paper_column *pc = item->get_column ();
+ Interval w;
+
+ extract_grob_set (me, "elements", elts);
+ for (vsize i = 0; i < elts.size (); i++)
+ {
+ Item *il = dynamic_cast<Item *> (elts[i]);
+ if (pc != il->get_column ())
{
- w.unite (iv);
+ /* 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_grob_property ("padding");
+ SCM pad = me->get_property ("padding");
+
+ w.widen (robust_scm2double (pad, 0.0));
+
+ me->set_property ("X-extent", ly_interval2scm (w));
- if (gh_number_p (pad))
- {
- w[RIGHT] += gh_scm2double (pad)/2;
- w[LEFT] -= gh_scm2double (pad)/2;
- }
-
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 (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 ())
+ 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,
+ "Item that computes widths to generate spacing rods. "
+ "This is done in concert with @ref{separating-group-spanner-interface}.",
+ "X-extent "
+ "conditional-elements "
+ "elements "
+ "padding "
+ "skylines "
+ );
projects / lilypond.git / blobdiff