42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
#include <psemek/ui/impl/single_container_base.hpp>
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#include <psemek/react/map.hpp>
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#include <psemek/react/join.hpp>
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namespace psemek::ui::impl
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{
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single_container_base::single_container_base(react::value<geom::vector<float, 2>> margin)
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: margin_(margin)
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, child_size_constraints_(size_constraints::max())
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, size_constraints_(react::map([](struct size_constraints const & child_constraints, geom::vector<float, 2> const & margin){
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return shift(child_constraints, margin);
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}, react::join(child_size_constraints_), margin))
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{}
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void single_container_base::reshape(geom::box<float, 2> const & new_shape)
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{
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single_container::reshape(new_shape);
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if (child())
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child()->reshape(geom::shrink(new_shape, *margin_));
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}
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react::value<size_constraints> single_container_base::size_constraints() const
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{
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return size_constraints_;
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}
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void single_container_base::set_child(std::unique_ptr<component> child)
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{
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single_container::set_child(std::move(child));
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child_size_constraints_.set(this->child() ? this->child()->size_constraints() : size_constraints::max());
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}
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std::unique_ptr<component> single_container_base::release_child()
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{
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auto child = single_container::release_child();
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child_size_constraints_.set(size_constraints::max());
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return child;
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}
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}
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