Call post_reshape when adding children to ui::single_container & ui::selector

libs/ui/source/selector.cpp

@@ -143,6 +143,8 @@ namespace psemek::ui
 		submenu_.resize(size);
 		child_boxes_.resize(size);
 		children_range_.resize(size + 1);
+
+		post_reshape();
 	}
 
 	std::size_t selector::add(std::shared_ptr<element> child)
@@ -153,6 +155,8 @@ namespace psemek::ui
 		children_range_.push_back(child.get());
 		child->set_parent(this);
 
+		post_reshape();
+
 		return children_.size() - 1;
 	}
 
@@ -178,6 +182,7 @@ namespace psemek::ui
 		submenu_.clear();
 		child_boxes_.clear();
 		children_range_.assign(1, nullptr);
+		post_reshape();
 	}
 
 	geom::interval<float> selector::y_range(std::size_t index) const

libs/ui/source/single_container.cpp

@@ -12,6 +12,8 @@ namespace psemek::ui
 		if (child_) child_->set_parent(this);
 		children_[0] = child_.get();
 
+		post_reshape();
+
 		return old;
 	}