Replace System.Drawing primitives with our own.

OpenRA.Game/Primitives/Size.cs

@@ -0,0 +1,67 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+
+namespace OpenRA.Primitives
+{
+	public struct Size
+	{
+		public readonly int Width;
+		public readonly int Height;
+
+		public static Size operator +(Size left, Size right)
+		{
+			return new Size(left.Width + right.Width, left.Height + right.Height);
+		}
+
+		public static bool operator ==(Size left, Size right)
+		{
+			return left.Width == right.Width && left.Height == right.Height;
+		}
+
+		public static bool operator !=(Size left, Size right)
+		{
+			return !(left == right);
+		}
+
+		public static Size operator -(Size sz1, Size sz2)
+		{
+			return new Size(sz1.Width - sz2.Width, sz1.Height - sz2.Height);
+		}
+
+		public Size(int width, int height)
+		{
+			Width = width;
+			Height = height;
+		}
+
+		public bool IsEmpty { get { return Width == 0 && Height == 0; } }
+
+		public override bool Equals(object obj)
+		{
+			if (!(obj is Size))
+				return false;
+
+			return this == (Size)obj;
+		}
+
+		public override int GetHashCode()
+		{
+			return Width ^ Height;
+		}
+
+		public override string ToString()
+		{
+			return string.Format("{{Width={0}, Height={1}}}", Width, Height);
+		}
+	}
+}