Gamma Init

app/WindowsDisplayAPI/Native/Structures/RectangleL.cs

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+using System;
+using System.Diagnostics.Contracts;
+using System.Drawing;
+using System.Runtime.InteropServices;
+
+namespace WindowsDisplayAPI.Native.Structures
+{
+    // https://msdn.microsoft.com/en-us/library/vs/alm/dd162907(v=vs.85).aspx
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct RectangleL : IEquatable<RectangleL>
+    {
+        [MarshalAs(UnmanagedType.U4)] public readonly int Left;
+        [MarshalAs(UnmanagedType.U4)] public readonly int Top;
+        [MarshalAs(UnmanagedType.U4)] public readonly int Right;
+        [MarshalAs(UnmanagedType.U4)] public readonly int Bottom;
+
+        [Pure]
+        public Rectangle ToRectangle()
+        {
+            return new Rectangle(Left, Top, Right - Left, Bottom - Top);
+        }
+
+        public RectangleL(int left, int top, int right, int bottom)
+        {
+            Left = left;
+            Top = top;
+            Right = right;
+            Bottom = bottom;
+        }
+
+        public RectangleL(Rectangle rectangle) : this(rectangle.Left, rectangle.Top, rectangle.Right, rectangle.Bottom)
+        {
+        }
+
+        public bool Equals(RectangleL other)
+        {
+            return Left == other.Left && Top == other.Top && Right == other.Right && Bottom == other.Bottom;
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj))
+            {
+                return false;
+            }
+
+            return obj is RectangleL rectangle && Equals(rectangle);
+        }
+
+        public override int GetHashCode()
+        {
+            unchecked
+            {
+                var hashCode = Left;
+                hashCode = (hashCode * 397) ^ Top;
+                hashCode = (hashCode * 397) ^ Right;
+                hashCode = (hashCode * 397) ^ Bottom;
+
+                return hashCode;
+            }
+        }
+
+        public static bool operator ==(RectangleL left, RectangleL right)
+        {
+            return Equals(left, right) || left.Equals(right);
+        }
+
+        public static bool operator !=(RectangleL left, RectangleL right)
+        {
+            return !(left == right);
+        }
+    }
+}