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)
28 elt_l_->used_b_ = true;
31 for (SCM ax = elt_l_->get_elt_property ("axes"); ax != SCM_EOL ; ax = gh_cdr (ax))
33 Axis a = (Axis) gh_scm2int (gh_car (ax));
36 e->set_parent (elt_l_, a);
39 Group_interface (elt_l_).add_element (e);
41 elt_l_->add_dependency (e);
46 Axis_group_interface::axis_b (Axis a )const
48 return elt_l_->dim_cache_[a]->extent_callback_l_ == group_extent_callback;
52 Axis_group_interface::relative_group_extent (Axis a, Score_element *common, SCM elts)
55 for (SCM s = elts; gh_pair_p (s); s = gh_cdr (s))
57 Score_element * se = unsmob_element (gh_car (s));
58 Interval dims = se->extent (a);
60 r.unite (dims + se->relative_coordinate (common, a));
66 Axis_group_interface::group_extent_callback (Dimension_cache const *c)
69 Score_element * me = c->element_l ();
70 Score_element * common = me;
72 for (SCM s = me->get_elt_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
74 Score_element * se = unsmob_element (gh_car (s));
75 common = se->common_refpoint (common, a);
78 Real my_coord = me->relative_coordinate (common, a);
79 Interval r (relative_group_extent (a, common, me->get_elt_property ("elements")));
85 Axis_group_interface::set_interface ()
87 if (!has_interface_b ())
89 elt_l_->set_elt_property ("elements", SCM_EOL);
90 elt_l_->set_elt_property ("transparent", SCM_BOOL_T); // junk this?
91 elt_l_->set_elt_property ("axes" , SCM_EOL);
92 group (elt_l_, "interfaces").add_thing (ly_symbol2scm ("Axis_group"));
97 Axis_group_interface::set_axes (Axis a1, Axis a2)
101 SCM ax = gh_cons (gh_int2scm (a1), SCM_EOL);
103 ax= gh_cons (gh_int2scm (a2), ax);
106 elt_l_->set_elt_property ("axes", ax);
108 if (a1 != X_AXIS && a2 != X_AXIS)
109 elt_l_->set_empty (X_AXIS);
110 if (a1 != Y_AXIS && a2 != Y_AXIS)
111 elt_l_->set_empty (Y_AXIS);
113 elt_l_->dim_cache_[a1]->set_extent_callback (Axis_group_interface::group_extent_callback);
114 elt_l_->dim_cache_[a2]->set_extent_callback (Axis_group_interface::group_extent_callback);
117 Link_array<Score_element>
118 Axis_group_interface::get_children ()
120 Link_array<Score_element> childs;
121 childs.push (elt_l_) ;
123 if (!has_interface_b ())
126 for (SCM ep = elt_l_->get_elt_property ("elements"); gh_pair_p (ep); ep = gh_cdr (ep))
128 Score_element* e = unsmob_element (gh_car (ep));
130 childs.concat (Axis_group_interface (e).get_children ());
137 Axis_group_interface::has_interface_b ()
139 SCM memq = scm_memq (ly_symbol2scm ("Axis_group"),
140 elt_l_->get_elt_property ("interfaces"));
142 return (memq != SCM_BOOL_F);