#include <psemek/ui/impl/single_container_base.hpp>

namespace psemek::ui::impl
{

	single_container_base::single_container_base(react::value<geom::vector<float, 2>> margin)
		: margin_(std::move(margin))
	{}

	void single_container_base::reshape(geom::box<float, 2> const & new_shape)
	{
		single_container::reshape(new_shape);

		if (child())
			child()->reshape(geom::shrink(new_shape, *margin_));
	}

	geom::interval<float> single_container_base::size_constraints(int dimension, float other_dimension_size) const
	{
		geom::interval<float> result = single_container::size_constraints(dimension, other_dimension_size);

		if (child())
			result = child()->size_constraints(dimension, other_dimension_size - 2.f * (*margin_)[dimension ^ 1]);

		return result + 2.f * (*margin_)[dimension];
	}

}