source file of the GNU LilyPond music typesetter
- (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#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_pointer ("items-worth-living", SCM_EOL);
-}
-void
-Hara_kiri_group_spanner::add_interesting_item (Score_element* me,Item* n)
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner,y_extent,2);
+SCM
+Hara_kiri_group_spanner::y_extent (SCM element_smob, SCM scm_axis)
{
- me->add_dependency (n);
- Pointer_group_interface (me, "items-worth-living").add_element (n);
+ Grob *me = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (scm_axis);
+ assert (a == 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_pointer ("items-worth-living");
+ Spanner*sp = dynamic_cast<Spanner*> (me);
+ SCM worth = me->get_grob_property ("items-worth-living");
if (gh_pair_p (worth))
return ;
- Link_array<Score_element> childs = Axis_group_interface (me).get_children ();
+ if (!to_boolean (me->get_grob_property ("remove-first"))
+ && broken_spanner_index (sp) == 0)
+ {
+ return ;
+ }
+
+ Link_array<Grob> childs = Axis_group_interface::get_children (me);
for (int 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. */
-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)
{
- while (elt
- && to_boolean (elt->get_elt_property ("hara-kiri-interface")))
- elt = elt->parent_l(a);
+ Grob *me = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (axis);
+ assert (a == Y_AXIS);
+ consider_suicide (me);
+ return gh_double2scm (0.0);
+}
- if (elt)
- {
- Hara_kiri_group_spanner::consider_suicide (elt);
- }
- return 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) gh_scm2int (axis);
+ assert (a == Y_AXIS);
+ force_hara_kiri_callback (daughter->get_parent (a)->self_scm (), axis);
+ return gh_double2scm (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",
+ " As Vertical_group_spanner, but keep track of interesting items. If \
+we don't contain any interesting items after linebreaking, then \
+gracefully commit suicide. Objective: don't disgrace Lily by \
+typesetting empty lines in orchestral scores.", \
+ "items-worth-living remove-first");
+