#include "axis-group-interface.hh"
+#include "align-interface.hh"
#include "pointer-group-interface.hh"
#include "grob.hh"
+#include "grob-array.hh"
#include "hara-kiri-group-spanner.hh"
+#include "international.hh"
+#include "item.hh"
+#include "paper-column.hh"
+#include "paper-score.hh"
+#include "system.hh"
#include "warn.hh"
void
return r;
}
+Interval
+Axis_group_interface::cached_pure_height (Grob *me,
+ vector<Grob*> const &elts,
+ Grob *common,
+ int start, int end)
+{
+ Paper_score *ps = get_root_system (me)->paper_score ();
+ vector<vsize> breaks = ps->get_break_indices ();
+ vector<Grob*> cols = ps->get_columns ();
+ vsize start_index = VPOS;
+ vsize end_index = VPOS;
+
+ for (vsize i = 0; i < breaks.size (); i++)
+ {
+ int r = Paper_column::get_rank (cols[breaks[i]]);
+ if (start == r)
+ start_index = i;
+ if (end == r)
+ end_index = i;
+ }
+
+ if (start_index == VPOS || end_index == VPOS)
+ {
+ programming_error (_ ("tried to calculate pure-height at a non-breakpoint"));
+ return Interval (0, 0);
+ }
+
+ SCM extents = me->get_property ("cached-pure-extents");
+ if (!scm_is_vector (extents))
+ {
+ extents = scm_c_make_vector (breaks.size () - 1, SCM_EOL);
+ for (vsize i = 0; i < breaks.size () - 1; i++)
+ {
+ int st = Paper_column::get_rank (cols[breaks[i]]);
+ int ed = Paper_column::get_rank (cols[breaks[i+1]]);
+ Interval iv = relative_pure_height (me, elts, common, st, ed, false);
+ scm_vector_set_x (extents, scm_from_int (i), ly_interval2scm (iv));
+ }
+ me->set_property ("cached-pure-extents", extents);
+ }
+
+ Interval ext (0, 0);
+ for (vsize i = start_index; i < end_index; i++)
+ ext.unite (ly_scm2interval (scm_c_vector_ref (extents, i)));
+ return ext;
+}
+
+Interval
+Axis_group_interface::relative_pure_height (Grob *me,
+ vector<Grob*> const &elts,
+ Grob *common,
+ int start, int end,
+ bool use_cache)
+{
+ /* It saves a _lot_ of time if we assume a VerticalAxisGroup is additive
+ (ie. height (i, k) = height (i, j) + height (j, k) for all i <= j <= k).
+ Unfortunately, it isn't always true, particularly if there is a
+ VerticalAlignment somewhere in the descendants.
+
+ Apart from PianoStaff, which has a fixed VerticalAlignment so it doesn't
+ count, the only VerticalAlignment comes from Score. This makes it
+ reasonably safe to assume that if our parent is a VerticalAlignment,
+ we can assume additivity and cache things nicely. */
+ Grob *p = me->get_parent (Y_AXIS);
+ if (use_cache && p && Align_interface::has_interface (p))
+ return Axis_group_interface::cached_pure_height (me, elts, common, start, end);
+
+ Interval r;
+
+ for (vsize i = 0; i < elts.size (); i++)
+ {
+ Interval_t<int> rank_span = elts[i]->spanned_rank_iv ();
+ Item *it = dynamic_cast<Item*> (elts[i]);
+ if (rank_span[LEFT] <= end && rank_span[RIGHT] >= start && (!it || it->pure_is_visible (start, end)))
+ {
+ Interval dims = elts[i]->pure_height (common, start, end);
+ if (!dims.is_empty ())
+ r.unite (dims);
+ }
+ }
+ return r;
+}
+
MAKE_SCHEME_CALLBACK (Axis_group_interface, width, 1);
SCM
Axis_group_interface::width (SCM smob)
Grob *me = unsmob_grob (smob);
return generic_group_extent (me, Y_AXIS);
}
+
+MAKE_SCHEME_CALLBACK (Axis_group_interface, pure_height, 3);
+SCM
+Axis_group_interface::pure_height (SCM smob, SCM start_scm, SCM end_scm)
+{
+ int start = robust_scm2int (start_scm, 0);
+ int end = robust_scm2int (end_scm, INT_MAX);
+ Grob *me = unsmob_grob (smob);
+
+ return pure_group_height (me, start, end);
+}
SCM
Axis_group_interface::generic_group_extent (Grob *me, Axis a)
return ly_interval2scm (r - my_coord);
}
+SCM
+Axis_group_interface::pure_group_height (Grob *me, int start, int end)
+{
+ Grob *common = unsmob_grob (me->get_object ("common-refpoint-of-elements"));
+
+ if (!common)
+ {
+ extract_grob_set (me, "elements", elts);
+
+ vector<Grob*> relevant_elts;
+ SCM is_relevant = ly_lily_module_constant ("pure-relevant");
+
+ for (vsize i = 0; i < elts.size (); i++)
+ {
+ if (to_boolean (scm_apply_1 (is_relevant, elts[i]->self_scm (), SCM_EOL)))
+ relevant_elts.push_back (elts[i]);
+
+ Item *it = dynamic_cast<Item*> (elts[i]);
+ Direction d = LEFT;
+ if (it)
+ do
+ {
+ Item *piece = it->find_prebroken_piece (d);
+ if (piece && to_boolean (scm_apply_1 (is_relevant, piece->self_scm (), SCM_EOL)))
+ relevant_elts.push_back (piece);
+ }
+ while (flip (&d) != LEFT);
+ }
+
+ common = common_refpoint_of_array (relevant_elts, me, Y_AXIS);
+ me->set_object ("common-refpoint-of-elements", common->self_scm ());
+
+ SCM ga_scm = Grob_array::make_array ();
+ Grob_array *ga = unsmob_grob_array (ga_scm);
+ ga->set_array (relevant_elts);
+ me->set_object ("pure-relevant-elements", ga_scm);
+ }
+
+ extract_grob_set (me, "pure-relevant-elements", elts);
+ Real my_coord = me->relative_coordinate (common, Y_AXIS);
+ Interval r (relative_pure_height (me, elts, common, start, end, true));
+
+ return ly_interval2scm (r - my_coord);
+}
+
void
Axis_group_interface::get_children (Grob *me, vector<Grob*> *found)
{
/* properties */
"axes "
- "elements ");
+ "elements "
+ "common-refpoint-of-elements "
+ "pure-relevant-elements "
+ "cached-pure-extents "
+ );
projects / lilypond.git / blobdiff