source file of the GNU LilyPond music typesetter
- (c) 1998--2002 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 "warn.hh"
#include "item.hh"
-
-MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner,y_extent,2);
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, y_extent, 2);
SCM
Hara_kiri_group_spanner::y_extent (SCM element_smob, SCM scm_axis)
{
Grob *me = unsmob_grob (element_smob);
- Axis a = (Axis) gh_scm2int (scm_axis);
+ (void) scm_axis;
- assert (a == Y_AXIS);
+ assert (scm_to_int (scm_axis) == Y_AXIS);
consider_suicide (me);
- return Axis_group_interface::group_extent_callback (me->self_scm (), scm_axis);
+ return Axis_group_interface::group_extent_callback (me->self_scm (), scm_axis);
}
-
void
-Hara_kiri_group_spanner::consider_suicide (Grob*me)
+Hara_kiri_group_spanner::consider_suicide (Grob *me)
{
- SCM worth = me->get_grob_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<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. */
-MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner,force_hara_kiri_callback,2);
+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);
- Axis a = (Axis) gh_scm2int (axis);
- assert (a == Y_AXIS);
+ (void) axis;
+
+ assert (scm_to_int (axis) == Y_AXIS);
consider_suicide (me);
- return gh_double2scm (0.0);
+ return scm_make_real (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_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);
+ Axis a = (Axis) scm_to_int (axis);
assert (a == Y_AXIS);
force_hara_kiri_callback (daughter->get_parent (a)->self_scm (), axis);
- return gh_double2scm (0.0);
+ return scm_make_real (0.0);
}
void
-Hara_kiri_group_spanner::add_element (Grob * me, Grob *e)
+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)
+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_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");
+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");