+Widget *Panel::find_next_child(int origin_x, int origin_y, int origin_dim, int nav_x, int nav_y) const
+{
+ Widget *sibling = 0;
+ int best_score = 0;
+ for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
+ {
+ if((*i)->widget==input_focus || !(*i)->widget->is_focusable())
+ continue;
+
+ const Geometry &cgeom = (*i)->widget->get_geometry();
+ int dx = compute_delta(cgeom.x, cgeom.w, origin_x, origin_dim, nav_x);
+ int dy = compute_delta(cgeom.y, cgeom.h, origin_y, origin_dim, nav_y);
+
+ int score = -1;
+ if(nav_y && nav_y*dy>=0)
+ score = nav_y*dy+abs(dx)*4;
+ else if(nav_x && nav_x*dx>=0)
+ score = nav_x*dx+abs(dy)*4;
+
+ if(score>=0 && (!sibling || score<best_score))
+ {
+ sibling = (*i)->widget;
+ best_score = score;
+ }
+ }
+
+ return sibling;
+}
+
+int Panel::compute_delta(int pos, int dim, int origin_pos, int origin_dim, int nav)
+{
+ if(nav<0)
+ return pos+dim-origin_pos;
+ else if(nav>0)
+ return pos-origin_pos;
+ else if(pos+dim<origin_pos-origin_dim/2)
+ return pos+dim+origin_dim/2-origin_pos;
+ else if(pos>origin_pos+origin_dim/2)
+ return pos-origin_pos-origin_dim/2;
+ else
+ return 0;
+}
+
+void Panel::on_size_change()