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node_modules/react-native/ReactCommon/react/renderer/graphics/RectangleEdges.h

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <tuple>
+
+#include <react/renderer/graphics/Float.h>
+#include <react/renderer/graphics/Rect.h>
+#include <react/utils/hash_combine.h>
+
+namespace facebook::react {
+
+/*
+ * Generic data structure describes some values associated with *edges*
+ * of a rectangle.
+ */
+template <typename T>
+struct RectangleEdges {
+  T left{};
+  T top{};
+  T right{};
+  T bottom{};
+
+  bool operator==(const RectangleEdges<T> &rhs) const noexcept
+  {
+    return std::tie(this->left, this->top, this->right, this->bottom) ==
+        std::tie(rhs.left, rhs.top, rhs.right, rhs.bottom);
+  }
+
+  bool operator!=(const RectangleEdges<T> &rhs) const noexcept
+  {
+    return !(*this == rhs);
+  }
+
+  bool isUniform() const noexcept
+  {
+    return left == top && left == right && left == bottom;
+  }
+
+  static const RectangleEdges<T> ZERO;
+};
+
+template <typename T>
+const RectangleEdges<T> RectangleEdges<T>::ZERO = {};
+
+template <typename T>
+RectangleEdges<T> operator+(const RectangleEdges<T> &lhs, const RectangleEdges<T> &rhs) noexcept
+{
+  return RectangleEdges<T>{lhs.left + rhs.left, lhs.top + rhs.top, lhs.right + rhs.right, lhs.bottom + rhs.bottom};
+}
+
+template <typename T>
+RectangleEdges<T> operator-(const RectangleEdges<T> &lhs, const RectangleEdges<T> &rhs) noexcept
+{
+  return RectangleEdges<T>{lhs.left - rhs.left, lhs.top - rhs.top, lhs.right - rhs.right, lhs.bottom - rhs.bottom};
+}
+
+/*
+ * EdgeInsets
+ */
+using EdgeInsets = RectangleEdges<Float>;
+
+/*
+ * Adjusts a rectangle by the given edge insets.
+ */
+inline Rect insetBy(const Rect &rect, const EdgeInsets &insets) noexcept
+{
+  return Rect{
+      .origin = {.x = rect.origin.x + insets.left, .y = rect.origin.y + insets.top},
+      .size = {
+          .width = rect.size.width - insets.left - insets.right,
+          .height = rect.size.height - insets.top - insets.bottom}};
+}
+
+/*
+ * Adjusts a rectangle by the given edge outsets.
+ */
+inline Rect outsetBy(const Rect &rect, const EdgeInsets &outsets) noexcept
+{
+  return Rect{
+      .origin = {.x = rect.origin.x - outsets.left, .y = rect.origin.y - outsets.top},
+      .size = {
+          .width = rect.size.width + outsets.left + outsets.right,
+          .height = rect.size.height + outsets.top + outsets.bottom}};
+}
+
+} // namespace facebook::react
+
+namespace std {
+
+template <typename T>
+struct hash<facebook::react::RectangleEdges<T>> {
+  size_t operator()(const facebook::react::RectangleEdges<T> &edges) const noexcept
+  {
+    return facebook::react::hash_combine(edges.left, edges.right, edges.top, edges.bottom);
+  }
+};
+
+} // namespace std