Fabric: LayoutConstraints::clamp()

Summary: `LayoutConstraints::clamp` clamps the provided `Size` between the `minimumSize` and `maximumSize` bounds of this `LayoutConstraints`.

Reviewed By: mdvacca

Differential Revision: D14205770

fbshipit-source-id: 4799608cead393451d334e47dd6906255699a1e8

ReactCommon/fabric/core/layout/LayoutConstraints.cpp

@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "LayoutConstraints.h"
+
+#include <algorithm>
+
+namespace facebook {
+namespace react {
+
+Size LayoutConstraints::clamp(const Size &size) const {
+  return {
+      std::max(minimumSize.width, std::min(maximumSize.width, size.width)),
+      std::max(minimumSize.height, std::min(maximumSize.height, size.height))};
+}
+
+} // namespace react
+} // namespace facebook

ReactCommon/fabric/core/layout/LayoutConstraints.h

@@ -21,6 +21,12 @@ struct LayoutConstraints {
   Size minimumSize{0, 0};
   Size maximumSize{kFloatUndefined, kFloatUndefined};
   LayoutDirection layoutDirection{LayoutDirection::Undefined};
+
+  /*
+   * Clamps the provided `Size` between the `minimumSize` and `maximumSize`
+   * bounds of this `LayoutConstraints`.
+   */
+  Size clamp(const Size &size) const;
 };
 
 inline bool operator==(