2 axis-group-interface.cc -- implement Axis_group_interface
4 source file of the GNU LilyPond music typesetter
6 (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "axis-group-interface.hh"
11 #include "score-element.hh"
12 #include "dimension-cache.hh"
14 Axis_group_interface::Axis_group_interface (Score_element*s)
20 Axis_group_interface (Score_element*s)
22 return Axis_group_interface (s);
26 Axis_group_interface::add_element (Score_element *e)
29 // ugh. used_b_ should be junked.
30 elt_l_->used_b_ = true;
33 for (SCM ax = elt_l_->get_elt_property ("axes"); ax != SCM_EOL ; ax = gh_cdr (ax))
35 Axis a = (Axis) gh_scm2int (gh_car (ax));
38 e->set_parent (elt_l_, a);
41 Group_interface (elt_l_).add_element (e);
42 elt_l_->add_dependency (e);
47 Axis_group_interface::axis_b (Axis a )const
49 return elt_l_->has_extent_callback_b (group_extent_callback, a);
53 Axis_group_interface::relative_group_extent (Axis a, Score_element *common, SCM elts)
56 for (SCM s = elts; gh_pair_p (s); s = gh_cdr (s))
58 Score_element * se = unsmob_element (gh_car (s));
59 Interval dims = se->extent (a);
61 r.unite (dims + se->relative_coordinate (common, a));
67 Axis_group_interface::group_extent_callback (Score_element const*me, Axis a)
69 Score_element * common =(Score_element*) me;
71 for (SCM s = me->get_elt_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
73 Score_element * se = unsmob_element (gh_car (s));
74 common = se->common_refpoint (common, a);
77 Real my_coord = me->relative_coordinate (common, a);
78 Interval r (relative_group_extent (a, common, me->get_elt_property ("elements")));
84 Axis_group_interface::set_interface ()
86 if (!has_interface_b ())
88 elt_l_->set_elt_property ("elements", SCM_EOL);
89 elt_l_->set_elt_property ("transparent", SCM_BOOL_T); // junk this?
90 elt_l_->set_elt_property ("axes" , SCM_EOL);
91 group (elt_l_, "interfaces").add_thing (ly_symbol2scm ("Axis_group"));
96 Axis_group_interface::set_axes (Axis a1, Axis a2)
100 SCM ax = gh_cons (gh_int2scm (a1), SCM_EOL);
102 ax= gh_cons (gh_int2scm (a2), ax);
105 elt_l_->set_elt_property ("axes", ax);
107 if (a1 != X_AXIS && a2 != X_AXIS)
108 elt_l_->set_extent_callback (0, X_AXIS);
109 if (a1 != Y_AXIS && a2 != Y_AXIS)
110 elt_l_->set_extent_callback (0, Y_AXIS);
112 elt_l_->set_extent_callback (Axis_group_interface::group_extent_callback,a1);
113 elt_l_->set_extent_callback (Axis_group_interface::group_extent_callback,a2);
116 Link_array<Score_element>
117 Axis_group_interface::get_children ()
119 Link_array<Score_element> childs;
120 childs.push (elt_l_) ;
122 if (!has_interface_b ())
125 for (SCM ep = elt_l_->get_elt_property ("elements"); gh_pair_p (ep); ep = gh_cdr (ep))
127 Score_element* e = unsmob_element (gh_car (ep));
129 childs.concat (Axis_group_interface (e).get_children ());
136 Axis_group_interface::has_interface_b ()
138 SCM ifs = elt_l_->get_elt_property ("interfaces");
140 if (!gh_pair_p (ifs ))
142 return scm_memq (ly_symbol2scm ("Axis_group"),ifs) != SCM_BOOL_F;