-/*
- axis-group-interface.cc -- implement Axis_group_interface
-
+/*
+ axis-group-interface.cc -- implement Axis_group_interface
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
-#include "hara-kiri-group-spanner.hh"
+
+ (c) 2000--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
#include "axis-group-interface.hh"
+
+#include "pointer-group-interface.hh"
#include "grob.hh"
+#include "hara-kiri-group-spanner.hh"
+#include "warn.hh"
void
-Axis_group_interface::add_element (Grob*me,Grob *e)
+Axis_group_interface::add_element (Grob *me, Grob *e)
{
- for (SCM ax = me->get_grob_property ("axes"); ax != SCM_EOL ; ax = ly_cdr (ax))
+ SCM axes = me->get_property ("axes");
+ if (!scm_is_pair (axes))
+ programming_error ("axes should be nonempty");
+
+ for (SCM ax = axes; ax != SCM_EOL; ax = scm_cdr (ax))
{
- Axis a = (Axis) gh_scm2int (ly_car (ax));
-
+ Axis a = (Axis) scm_to_int (scm_car (ax));
+
if (!e->get_parent (a))
e->set_parent (me, a);
+
+ e->internal_set_object ((a == X_AXIS)
+ ? ly_symbol2scm ("axis-group-parent-X")
+ : ly_symbol2scm ("axis-group-parent-Y"),
+ me->self_scm ());
}
+ /* must be ordered, because Align_interface also uses
+ Axis_group_interface */
Pointer_group_interface::add_grob (me, ly_symbol2scm ("elements"), e);
- me->add_dependency (e);
}
bool
-Axis_group_interface::axis_b (Grob*me,Axis a)
+Axis_group_interface::has_axis (Grob *me, Axis a)
{
- /*
- urg. FIXME, check for Hara_kiri_group_spanner shouldn't be necessary?
+ SCM axes = me->get_property ("axes");
-
- */
- return me->has_extent_callback_b (group_extent_callback_proc, a) ||
- (me->has_extent_callback_b (Hara_kiri_group_spanner::y_extent_proc, a));
+ return (SCM_BOOL_F != scm_memq (scm_from_int (a), axes));
}
Interval
-Axis_group_interface::relative_group_extent (Axis a, Grob *common, SCM elts)
+Axis_group_interface::relative_group_extent (vector<Grob*> const &elts,
+ Grob *common, Axis a)
{
Interval r;
- for (SCM s = elts; gh_pair_p (s); s = ly_cdr (s))
+ for (vsize i = 0; i < elts.size (); i++)
{
- Grob * se = unsmob_grob (ly_car (s));
+ Grob *se = elts[i];
Interval dims = se->extent (common, a);
- if (!dims.empty_b ())
+ if (!dims.is_empty ())
r.unite (dims);
}
return r;
}
-MAKE_SCHEME_CALLBACK (Axis_group_interface,group_extent_callback,2);
+MAKE_SCHEME_CALLBACK (Axis_group_interface, width, 1);
SCM
-Axis_group_interface::group_extent_callback (SCM element_smob, SCM scm_axis)
+Axis_group_interface::width (SCM smob)
{
- Grob *me = unsmob_grob (element_smob);
- Axis a = (Axis) gh_scm2int (scm_axis);
-
- Grob * common = (Grob*) me;
+ Grob *me = unsmob_grob (smob);
+ return generic_group_extent (me, X_AXIS);
+}
- for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
- {
- Grob * se = unsmob_grob (ly_car (s));
- common = se->common_refpoint (common, a);
- }
+MAKE_SCHEME_CALLBACK (Axis_group_interface, height, 1);
+SCM
+Axis_group_interface::height (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ return generic_group_extent (me, Y_AXIS);
+}
+
+SCM
+Axis_group_interface::generic_group_extent (Grob *me, Axis a)
+{
+ extract_grob_set (me, "elements", elts);
+ Grob *common = common_refpoint_of_array (elts, me, a);
Real my_coord = me->relative_coordinate (common, a);
- Interval r (relative_group_extent (a, common, me->get_grob_property ("elements")));
+ Interval r (relative_group_extent (elts, common, a));
return ly_interval2scm (r - my_coord);
}
void
-Axis_group_interface::set_axes (Grob*me,Axis a1, Axis a2)
+Axis_group_interface::get_children (Grob *me, vector<Grob*> *found)
{
- // set_interface () ?
- SCM sa1= gh_int2scm (a1);
- SCM sa2 = gh_int2scm (a2);
-
- SCM axes = me->get_grob_property ("axes");
-
- if (!gh_pair_p (axes)
- || scm_memq (sa1, axes) == SCM_BOOL_F
- || scm_memq (sa2, axes) == SCM_BOOL_F)
- {
- SCM ax = gh_cons (sa1, SCM_EOL);
- if (a1 != a2)
- ax= gh_cons (sa2, ax);
- me->set_grob_property ("axes", ax);
- }
-
- if (a1 != X_AXIS && a2 != X_AXIS)
- me->set_extent_callback (SCM_EOL, X_AXIS);
- if (a1 != Y_AXIS && a2 != Y_AXIS)
- me->set_extent_callback (SCM_EOL, Y_AXIS);
-
- /*
- why so convoluted ? (fixme/documentme?)
- */
- if (me->has_extent_callback_b (Grob::molecule_extent_proc, a1))
- me->set_extent_callback (Axis_group_interface::group_extent_callback_proc,a1);
- if (me->has_extent_callback_b (Grob::molecule_extent_proc, a2))
- me->set_extent_callback (Axis_group_interface::group_extent_callback_proc,a2);
-}
-
-Link_array<Grob>
-Axis_group_interface::get_children (Grob*me)
-{
- Link_array<Grob> childs;
- childs.push (me) ;
+ found->push_back (me);
if (!has_interface (me))
- return childs;
-
- for (SCM ep = me->get_grob_property ("elements"); gh_pair_p (ep); ep = ly_cdr (ep))
+ return;
+
+ extract_grob_set (me, "elements", elements);
+ for (vsize i = 0; i < elements.size (); i++)
{
- Grob* e = unsmob_grob (ly_car (ep));
- if (e)
- childs.concat (Axis_group_interface::get_children (e));
+ Grob *e = elements[i];
+ Axis_group_interface::get_children (e, found);
}
-
- return childs;
}
-bool
-Axis_group_interface::has_interface (Grob*me)
-{
- return me && me->has_interface (ly_symbol2scm ("axis-group-interface"));
-}
+ADD_INTERFACE (Axis_group_interface, "axis-group-interface",
-void
-Axis_group_interface::set_interface (Grob*me)
-{
- if (!has_interface (me))
- {
- me->set_interface (ly_symbol2scm ("axis-group-interface"));
- }
-}
+ "An object that groups other layout objects.",
+
+ /* properties */
+ "axes "
+ "elements ");
projects / lilypond.git / blobdiff