-/*
- 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--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
#include "separation-item.hh"
+
+#include "accidental-placement.hh"
+#include "axis-group-interface.hh"
+#include "lookup.hh"
+#include "note-column.hh"
+#include "note-head.hh"
#include "paper-column.hh"
-#include "debug.hh"
-#include "group-interface.hh"
+#include "pointer-group-interface.hh"
+#include "skyline-pair.hh"
+#include "stencil.hh"
+#include "warn.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_element (s,"elements",i);
- s->add_dependency (i);
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("conditional-elements"), e);
+}
+
+Real
+Separation_item::set_distance (Item *l, Item *r, Real padding)
+{
+ Drul_array<Skyline_pair*> lines (Skyline_pair::unsmob (l->get_property ("horizontal-skylines")),
+ Skyline_pair::unsmob (r->get_property ("horizontal-skylines")));
+ Skyline right = conditional_skyline (r, l);
+ right.merge ((*lines[RIGHT])[LEFT]);
+
+ Real dist = padding + (*lines[LEFT])[RIGHT].distance (right);
+ if (dist > 0)
+ {
+ Rod rod;
+
+ rod.item_drul_ = Drul_array<Item*> (l, r);
+
+ rod.distance_ = dist;
+ rod.add_to_cols ();
+ }
+
+ return max (dist, 0.0);
+}
+
+bool
+Separation_item::is_empty (Grob *me)
+{
+ Skyline_pair *sky = Skyline_pair::unsmob (me->get_property ("horizontal-skylines"));
+ return (!sky || sky->is_empty ());
+}
+
+/*
+ Return the width of ME given that we are considering the object on
+ the LEFT.
+*/
+Skyline
+Separation_item::conditional_skyline (Grob *me, Grob *left)
+{
+ 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 ();
}
-Interval
-Separation_item::my_width (Grob *me)
+/* 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->column_l ();
- Interval w;
+ Item *item = dynamic_cast<Item *> (me);
+
+ 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_relevant_accidentals (read_only_elts, left);
+ else
+ {
+ elts = read_only_elts;
+
+ /* This is a special-case for NoteColumn: we want to include arpeggio in its
+ skyline (so spacing takes it into account) but we don't want to include it
+ in the NoteColumn's extent because some spanners (eg. Hairpin) bound themselves
+ on the NoteColumn and we don't want them to include arpeggios in their bounds.
+ */
+ if (Grob *a = Note_column::arpeggio (me)) {
+ elts.push_back (a);
+ }
+ }
+
+ Grob *ycommon = common_refpoint_of_array (elts, me, Y_AXIS);
- for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
+ for (vsize i = 0; i < elts.size (); i++)
{
- SCM elt = gh_car (s);
- if (!unsmob_element (elt))
+ Item *il = dynamic_cast<Item *> (elts[i]);
+ if (pc != il->get_column ())
+ continue;
+
+ /* ugh. We want to exclude groups of grobs (so that we insert each grob
+ individually into the skyline instead of adding a single box that
+ bounds all of them). However, we can't exclude an axis-group that
+ adds to its childrens' stencil. Currently, this is just TrillPitchGroup;
+ hence the check for note-head-interface. */
+ if (Axis_group_interface::has_interface (il)
+ && !Note_head::has_interface (il))
continue;
- Item *il = dynamic_cast<Item*> (unsmob_element (elt));
- if (pc != il->column_l ())
- {
- /* 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;
- }
-
- Interval iv (il->extent (pc, X_AXIS));
- if (!iv.empty_b ())
- {
- w.unite (iv);
- }
+ Interval y (il->pure_height (ycommon, 0, very_large));
+ Interval x (il->extent (pc, X_AXIS));
+
+ Interval extra_width = robust_scm2interval (elts[i]->get_property ("extra-spacing-width"),
+ Interval (-0.1, 0.1));
+ Interval extra_height = robust_scm2interval (elts[i]->get_property ("extra-spacing-height"),
+ Interval (-0.1, 0.1));
+
+ x[LEFT] += extra_width[LEFT];
+ x[RIGHT] += extra_width[RIGHT];
+ y[DOWN] += extra_height[DOWN];
+ y[UP] += extra_height[UP];
+
+ if (!x.is_empty () && !y.is_empty ())
+ out.push_back (Box (x, y));
}
- return w;
- // add this->offset_ ? this-> relative_coordinate ()?
+ return out;
}
+MAKE_SCHEME_CALLBACK (Separation_item, print, 1)
+SCM
+Separation_item::print (SCM smob)
+{
+ if (!debug_skylines)
+ return SCM_BOOL_F;
+
+ Grob *me = unsmob_grob (smob);
+ Stencil ret;
+ if (Skyline_pair *s = Skyline_pair::unsmob (me->get_property ("horizontal-skylines")))
+ {
+ ret.add_stencil (Lookup::points_to_line_stencil (0.1, (*s)[LEFT].to_points (Y_AXIS)).in_color (255, 255, 0));
+ ret.add_stencil (Lookup::points_to_line_stencil (0.1, (*s)[RIGHT].to_points (Y_AXIS)).in_color (0, 255, 255));
+ }
+ return ret.smobbed_copy ();
+}
+ADD_INTERFACE (Separation_item,
+ "Item that computes widths to generate spacing rods.",
+ /* properties */
+ "X-extent "
+ "conditional-elements "
+ "elements "
+ "padding "
+ "horizontal-skylines "
+ );
projects / lilypond.git / blobdiff