/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
LilyPond is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "grob.hh"
#include <cstring>
+#include <set>
#include "align-interface.hh"
#include "axis-group-interface.hh"
set_property ("X-extent", Grob::stencil_width_proc);
if (get_property_data ("Y-extent") == SCM_EOL)
set_property ("Y-extent", Grob::stencil_height_proc);
+ if (get_property_data ("vertical-skylines") == SCM_EOL)
+ set_property ("vertical-skylines", Grob::simple_vertical_skylines_from_stencil_proc);
+ if (get_property_data ("horizontal-skylines") == SCM_EOL)
+ set_property ("horizontal-skylines", Grob::simple_horizontal_skylines_from_stencil_proc);
}
Grob::Grob (Grob const &s)
= *unsmob_stencil (scm_call_1 (ly_lily_module_constant ("stencil-whiteout"),
retval.smobbed_copy ()));
}
+
+ SCM id = get_property ("id");
+ if (scm_is_string (id))
+ {
+ SCM expr = scm_list_3 (ly_symbol2scm ("id"),
+ id,
+ retval.expr ());
+
+ retval = Stencil (retval.extent_box (), expr);
+ }
+
}
return retval;
{
if (isinf (y) || isnan (y))
{
- programming_error (_ ("Infinity or NaN encountered"));
+ programming_error ("Infinity or NaN encountered");
return;
}
((Grob *)this)->dim_cache_[a].extent_ = new Interval (real_ext);
}
- real_ext.translate (offset);
+ // We never want nan, so we avoid shifting infinite values.
+ for (LEFT_and_RIGHT (d))
+ if (!isinf (real_ext[d]))
+ real_ext[d] += offset;
return real_ext;
}
Interval
Grob::maybe_pure_extent (Grob *refp, Axis a, bool pure, int start, int end)
{
- if (pure && a != Y_AXIS)
- programming_error ("tried to get pure width");
return (pure && a == Y_AXIS) ? pure_height (refp, start, end) : extent (refp, a);
}
Grob *
Grob::common_refpoint (Grob const *s, Axis a) const
{
- /* I don't like the quadratic aspect of this code, but I see no
- other way. The largest chain of parents might be 10 high or so,
- so it shouldn't be a real issue. */
- for (Grob const *c = this; c; c = c->dim_cache_[a].parent_)
- for (Grob const *d = s; d; d = d->dim_cache_[a].parent_)
- if (d == c)
- return (Grob *) d;
- return 0;
+ /* Catching the trivial cases is likely costlier than just running
+ through: one can't avoid going to the respective chain ends
+ anyway. We might save the second run through when the chain ends
+ differ, but keeping track of the ends makes the loop more costly.
+ */
+
+ int balance = 0;
+ Grob const *c;
+ Grob const *d;
+
+ for (c = this; c; ++balance)
+ c = c->dim_cache_[a].parent_;
+
+ for (d = s; d; --balance)
+ d = d->dim_cache_[a].parent_;
+
+ /* Cut down ancestry to same size */
+
+ for (c = this; balance > 0; --balance)
+ c = c->dim_cache_[a].parent_;
+
+ for (d = s; balance < 0; ++balance)
+ d = d->dim_cache_[a].parent_;
+
+ /* Now find point where our lineages converge */
+ while (c != d)
+ {
+ c = c->dim_cache_[a].parent_;
+ d = d->dim_cache_[a].parent_;
+ }
+
+ return (Grob *) c;
}
void
}
}
+/****************************************************************
+ VERTICAL ORDERING
+****************************************************************/
+
+Grob *
+get_maybe_root_vertical_alignment (Grob *g, Grob *maybe)
+{
+ if (!g)
+ return maybe;
+ if (Align_interface::has_interface (g))
+ return get_maybe_root_vertical_alignment (g->get_parent (Y_AXIS), g);
+ return get_maybe_root_vertical_alignment (g->get_parent (Y_AXIS), maybe);
+
+}
+
+Grob *
+Grob::get_root_vertical_alignment (Grob *g)
+{
+ return get_maybe_root_vertical_alignment (g, 0);
+}
+
+Grob *
+Grob::get_vertical_axis_group (Grob *g)
+{
+ if (!g)
+ return 0;
+ if (!g->get_parent (Y_AXIS))
+ return 0;
+ if (Axis_group_interface::has_interface (g)
+ && Align_interface::has_interface (g->get_parent (Y_AXIS)))
+ return g;
+ return get_vertical_axis_group (g->get_parent (Y_AXIS));
+
+}
+
+int
+Grob::get_vertical_axis_group_index (Grob *g)
+{
+ Grob *val = get_root_vertical_alignment (g);
+ if (!val)
+ return -1;
+ Grob *vax = get_vertical_axis_group (g);
+ extract_grob_set (val, "elements", elts);
+ for (vsize i = 0; i < elts.size (); i++)
+ if (elts[i] == vax)
+ return (int) i;
+ g->programming_error ("could not find this grob's vertical axis group in the vertical alignment");
+ return -1;
+}
+
+bool
+Grob::vertical_less (Grob *g1, Grob *g2)
+{
+ return internal_vertical_less (g1, g2, false);
+}
+
+bool
+Grob::pure_vertical_less (Grob *g1, Grob *g2)
+{
+ return internal_vertical_less (g1, g2, true);
+}
+
+bool
+Grob::internal_vertical_less (Grob *g1, Grob *g2, bool pure)
+{
+ Grob *vag = get_root_vertical_alignment (g1);
+ if (!vag)
+ {
+ g1->programming_error ("grob does not belong to a VerticalAlignment?");
+ return false;
+ }
+
+ Grob *ag1 = get_vertical_axis_group (g1);
+ Grob *ag2 = get_vertical_axis_group (g2);
+
+ extract_grob_set (vag, "elements", elts);
+
+ if (ag1 == ag2 && !pure)
+ {
+ Grob *common = g1->common_refpoint (g2, Y_AXIS);
+ return g1->relative_coordinate (common, Y_AXIS) > g2->relative_coordinate (common, Y_AXIS);
+ }
+
+ for (vsize i = 0; i < elts.size (); i++)
+ {
+ if (elts[i] == ag1)
+ return true;
+ if (elts[i] == ag2)
+ return false;
+ }
+
+ g1->programming_error ("could not place this grob in its axis group");
+ return false;
+}
+
/****************************************************************
MESSAGES
****************************************************************/
"cause "
"color "
"cross-staff "
- "extra-X-extent "
- "extra-Y-extent "
+ "id "
"extra-offset "
+ "footnote-music "
+ "forced-spacing "
+ "horizontal-skylines "
"interfaces "
"layer "
"meta "
"outside-staff-priority "
"pure-Y-offset-in-progress "
"rotation "
+ "skyline-horizontal-padding "
"springs-and-rods "
"staff-symbol "
"stencil "
"transparent "
+ "vertical-skylines "
"whiteout "
);
return common;
}
+Grob *
+common_refpoint_of_array (set<Grob *> const &arr, Grob *common, Axis a)
+{
+ set<Grob *>::iterator it;
+
+ for (it = arr.begin (); it != arr.end (); it++)
+ if (common)
+ common = common->common_refpoint (*it, a);
+ else
+ common = *it;
+
+ return common;
+}
+
Interval
robust_relative_extent (Grob *me, Grob *refpoint, Axis a)
{