source file of the GNU LilyPond music typesetter
- (c) 1998--2005 Jan Nieuwenhuizen <janneke@gnu.org>
- Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2008 Jan Nieuwenhuizen <janneke@gnu.org>
+ Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "hara-kiri-group-spanner.hh"
+#include "paper-column.hh"
#include "pointer-group-interface.hh"
#include "axis-group-interface.hh"
#include "spanner.hh"
#include "warn.hh"
-#include "item.hh"
-MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, y_extent, 2);
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, y_extent, 1);
SCM
-Hara_kiri_group_spanner::y_extent (SCM element_smob, SCM scm_axis)
+Hara_kiri_group_spanner::y_extent (SCM smob)
{
- Grob *me = unsmob_grob (element_smob);
- (void) scm_axis;
+ Grob *me = unsmob_grob (smob);
+ consider_suicide (me);
+ return Axis_group_interface::generic_group_extent (me, Y_AXIS);
+}
- assert (scm_to_int (scm_axis) == Y_AXIS);
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, calc_skylines, 1);
+SCM
+Hara_kiri_group_spanner::calc_skylines (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
consider_suicide (me);
- return Axis_group_interface::group_extent_callback (me->self_scm (), scm_axis);
+ return Axis_group_interface::calc_skylines (smob);
}
-void
-Hara_kiri_group_spanner::consider_suicide (Grob *me)
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, pure_height, 3);
+SCM
+Hara_kiri_group_spanner::pure_height (SCM smob, SCM start_scm, SCM end_scm)
{
- Spanner *sp = dynamic_cast<Spanner *> (me);
+ Grob *me = unsmob_grob (smob);
+ int start = robust_scm2int (start_scm, 0);
+ int end = robust_scm2int (end_scm, INT_MAX);
- extract_grob_set (me,"items-worth-living", worth);
- if (worth.size ())
- return;
+ if (request_suicide (me, start, end))
+ return ly_interval2scm (Interval ());
+
+ return ly_interval2scm (Axis_group_interface::pure_group_height (me, start, end));
+}
+
+/* there is probably a way that doesn't involve re-implementing a binary
+ search (I would love some proper closures right now) */
+bool find_in_range (SCM vector, int low, int hi, int min, int max)
+{
+ if (low >= hi)
+ return false;
+
+ int mid = low + (hi - low) / 2;
+ int val = scm_to_int (scm_c_vector_ref (vector, mid));
+ if (val >= min && val <= max)
+ return true;
+ else if (val < min)
+ return find_in_range (vector, mid+1, hi, min, max);
+ return find_in_range (vector, low, mid, min, max);
+}
+
+bool
+Hara_kiri_group_spanner::request_suicide (Grob *me, int start, int end)
+{
+ if (!to_boolean (me->get_property ("remove-empty")))
+ return false;
+
+ bool remove_first = to_boolean (me->get_property ("remove-first"));
+ if (!remove_first && start <= 0)
+ return false;
- if (!to_boolean (me->get_property ("remove-first"))
- && broken_spanner_index (sp) == 0)
+ SCM important = me->get_property ("important-column-ranks");
+ if (scm_is_vector (important))
{
- return;
+ int len = scm_c_vector_length (important);
+ if (find_in_range (important, 0, len, start, end))
+ return false;
}
+ else /* build the important-columns-cache */
+ {
+ extract_grob_set (me, "items-worth-living", worth);
+ vector<int> ranks;
+
+ for (vsize i = 0; i < worth.size (); i++)
+ {
+ Interval_t<int> iv = worth[i]->spanned_rank_interval ();
+ for (int j = iv[LEFT]; j <= iv[RIGHT]; j++)
+ ranks.push_back (j);
+ }
+ vector_sort (ranks, less<int> ());
+ uniq (ranks);
+
+ SCM scm_vec = scm_c_make_vector (ranks.size (), SCM_EOL);
+ for (vsize i = 0; i < ranks.size (); i++)
+ scm_vector_set_x (scm_vec, scm_from_int (i), scm_from_int (ranks[i]));
+ me->set_property ("important-column-ranks", scm_vec);
+
+ return request_suicide (me, start, end);
+ }
+
+ return true;
+}
- Link_array<Grob> childs;
+void
+Hara_kiri_group_spanner::consider_suicide (Grob *me)
+{
+ Spanner *sp = dynamic_cast<Spanner*> (me);
+ int left = sp->get_bound (LEFT)->get_column ()->get_rank ();
+ int right = sp->get_bound (RIGHT)->get_column ()->get_rank ();
+ if (!request_suicide (me, left, right))
+ return;
+
+ vector<Grob*> childs;
Axis_group_interface::get_children (me, &childs);
- for (int i = 0; i < childs.size (); i++)
+ for (vsize i = 0; i < childs.size (); i++)
childs[i]->suicide ();
/*
We can't rely on offsets and dimensions of elements in a hara-kiri
group. Use a callback to make sure that hara-kiri has been done
before asking for offsets. */
-MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_callback, 2);
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_callback, 1);
SCM
-Hara_kiri_group_spanner::force_hara_kiri_callback (SCM element_smob, SCM axis)
+Hara_kiri_group_spanner::force_hara_kiri_callback (SCM smob)
{
- Grob *me = unsmob_grob (element_smob);
- (void) axis;
-
- assert (scm_to_int (axis) == Y_AXIS);
+ Grob *me = unsmob_grob (smob);
consider_suicide (me);
return scm_from_double (0.0);
}
-MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_in_parent_callback, 2);
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_in_y_parent_callback, 1);
SCM
-Hara_kiri_group_spanner::force_hara_kiri_in_parent_callback (SCM element_smob, SCM axis)
+Hara_kiri_group_spanner::force_hara_kiri_in_y_parent_callback (SCM smob)
{
- Grob *daughter = unsmob_grob (element_smob);
- Axis a = (Axis) scm_to_int (axis);
- assert (a == Y_AXIS);
- force_hara_kiri_callback (daughter->get_parent (a)->self_scm (), axis);
+ Grob *daughter = unsmob_grob (smob);
+ force_hara_kiri_callback (daughter->get_parent (Y_AXIS)->self_scm ());
return scm_from_double (0.0);
}
-void
-Hara_kiri_group_spanner::add_element (Grob *me, Grob *e)
-{
- // e->add_offset_callback (force_hara_kiri_in_parent_callback, Y_AXIS);
- Axis_group_interface::add_element (me, e);
-}
-
void
Hara_kiri_group_spanner::add_interesting_item (Grob *me, Grob *n)
{
- me->add_dependency (n);
- Pointer_group_interface::add_grob (me, ly_symbol2scm ("items-worth-living"), n);
+ Pointer_group_interface::add_unordered_grob (me, ly_symbol2scm ("items-worth-living"), n);
}
-ADD_INTERFACE (Hara_kiri_group_spanner, "hara-kiri-group-interface",
- "A group spanner that keeps track of interesting items. If it "
- "doesn't contain any after linebreaking, then it "
- "will remove itself and all its children.",
- "items-worth-living remove-first");
+ADD_INTERFACE (Hara_kiri_group_spanner,
+ "A group spanner that keeps track of interesting items. If it"
+ " doesn't contain any after line breaking, it removes itself"
+ " and all its children.",
+
+ /* properties */
+ "items-worth-living "
+ "important-column-ranks "
+ "remove-empty "
+ "remove-first "
+ );
+
projects / lilypond.git / blobdiff