mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Andres Suarez
8bd3edec88
Reviewed By: aaronabramov Differential Revision: D33367752 fbshipit-source-id: 4ce94d184485e5ee0a62cf67ad2d3ba16e285c8f
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <limits>
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#include <folly/Hash.h>
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#include <react/renderer/core/LayoutPrimitives.h>
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#include <react/renderer/graphics/Geometry.h>
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namespace facebook {
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namespace react {
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/*
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* Unified layout constraints for measuring.
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*/
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struct LayoutConstraints {
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Size minimumSize{0, 0};
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Size maximumSize{
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std::numeric_limits<Float>::infinity(),
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std::numeric_limits<Float>::infinity()};
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LayoutDirection layoutDirection{LayoutDirection::Undefined};
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/*
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* Clamps the provided `Size` between the `minimumSize` and `maximumSize`
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* bounds of this `LayoutConstraints`.
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*/
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Size clamp(const Size &size) const;
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};
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inline bool operator==(
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const LayoutConstraints &lhs,
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const LayoutConstraints &rhs) {
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return std::tie(lhs.minimumSize, lhs.maximumSize, lhs.layoutDirection) ==
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std::tie(rhs.minimumSize, rhs.maximumSize, rhs.layoutDirection);
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}
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inline bool operator!=(
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const LayoutConstraints &lhs,
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const LayoutConstraints &rhs) {
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return !(lhs == rhs);
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}
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} // namespace react
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} // namespace facebook
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namespace std {
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template <>
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struct hash<facebook::react::LayoutConstraints> {
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size_t operator()(
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const facebook::react::LayoutConstraints &constraints) const {
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return folly::hash::hash_combine(
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0,
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constraints.minimumSize,
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constraints.maximumSize,
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constraints.layoutDirection);
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}
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};
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} // namespace std
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