X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fhara-kiri-group-spanner.cc;h=22975589cbe2df8aad1482ac6f0da63da81c4b1e;hb=f07f18bef861d6afa48b941b7579079d5d40df80;hp=cd16fab04f8026b68e36ba69a30cb896f3076879;hpb=0af2486a28f1c60b9de929a9101964d880927e54;p=lilypond.git

diff --git a/lily/hara-kiri-group-spanner.cc b/lily/hara-kiri-group-spanner.cc
index cd16fab04f..22975589cb 100644
--- a/lily/hara-kiri-group-spanner.cc
+++ b/lily/hara-kiri-group-spanner.cc
@@ -3,66 +3,97 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
+  (c) 1998--2005 Jan Nieuwenhuizen <janneke@gnu.org>
   Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
+#include "hara-kiri-group-spanner.hh"
+
 #include "axis-group-interface.hh"
 #include "spanner.hh"
-#include "hara-kiri-group-spanner.hh"
-#include "debug.hh"
+#include "warn.hh"
 #include "item.hh"
 
-void
-Hara_kiri_group_spanner::set_interface (Score_element*me)
-{
-  me->set_elt_property ("items-worth-living", SCM_EOL);
-  me->add_offset_callback (force_hara_kiri_callback, Y_AXIS);
-  me->set_interface (ly_symbol2scm ("hara-kiri-spanner-interface"));
-}
-
-bool
-Hara_kiri_group_spanner::has_interface (Score_element*me)
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, y_extent, 2);
+SCM
+Hara_kiri_group_spanner::y_extent (SCM element_smob, SCM scm_axis)
 {
-  return me->has_interface (ly_symbol2scm ("hara-kiri-spanner-interface"));
-}
+  Grob *me = unsmob_grob (element_smob);
+  (void) scm_axis;
 
-void 
-Hara_kiri_group_spanner::add_interesting_item (Score_element* me,Score_element* n)
-{
-  me->add_dependency (n);
-  Pointer_group_interface (me, "items-worth-living").add_element (n);
+  assert (scm_to_int (scm_axis) == Y_AXIS);
+  consider_suicide (me);
+  return Axis_group_interface::group_extent_callback (me->self_scm (), scm_axis);
 }
 
 void
-Hara_kiri_group_spanner::consider_suicide(Score_element*me)
+Hara_kiri_group_spanner::consider_suicide (Grob *me)
 {
-  SCM worth = me->get_elt_property ("items-worth-living");
-  if (gh_pair_p (worth))
-    return ;
+  Spanner *sp = dynamic_cast<Spanner *> (me);
+  SCM worth = me->get_property ("items-worth-living");
+  if (scm_is_pair (worth))
+    return;
+
+  if (!to_boolean (me->get_property ("remove-first"))
+      && broken_spanner_index (sp) == 0)
+    {
+      return;
+    }
 
-  Link_array<Score_element> childs = Axis_group_interface::get_children (me);
+  Link_array<Grob> childs = Axis_group_interface::get_children (me);
   for (int i = 0; i < childs.size (); i++)
     childs[i]->suicide ();
 
-
   /*
     very appropriate name here :-)
-   */
+  */
   me->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.  */
-Real
-Hara_kiri_group_spanner::force_hara_kiri_callback (Score_element *elt, Axis a)
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_callback, 2);
+SCM
+Hara_kiri_group_spanner::force_hara_kiri_callback (SCM element_smob, SCM axis)
 {
+  Grob *me = unsmob_grob (element_smob);
+  (void) axis;
+  
+  assert (scm_to_int (axis) == Y_AXIS);
+  consider_suicide (me);
+  return scm_make_real (0.0);
+}
+
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_in_parent_callback, 2);
+SCM
+Hara_kiri_group_spanner::force_hara_kiri_in_parent_callback (SCM element_smob, SCM axis)
+{
+  Grob *daughter = unsmob_grob (element_smob);
+  Axis a = (Axis) scm_to_int (axis);
   assert (a == Y_AXIS);
-  consider_suicide (elt);
-  return 0.0;
+  force_hara_kiri_callback (daughter->get_parent (a)->self_scm (), axis);
+  return scm_make_real (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);
+}
+
+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");
+