Replace System.Drawing primitives with our own.

OpenRA.Game/Primitives/Rectangle.cs

@@ -0,0 +1,120 @@
+#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 Rectangle
+	{
+		// TODO: Make these readonly: this will require a lot of changes to the UI logic
+		public int X;
+		public int Y;
+		public int Width;
+		public int Height;
+		public static readonly Rectangle Empty;
+
+		public static Rectangle FromLTRB(int left, int top, int right, int bottom)
+		{
+			return new Rectangle(left, top, right - left, bottom - top);
+		}
+
+		public static Rectangle Union(Rectangle a, Rectangle b)
+		{
+			return FromLTRB(Math.Min(a.Left, b.Left), Math.Min(a.Top, b.Top), Math.Max(a.Right, b.Right), Math.Max(a.Bottom, b.Bottom));
+		}
+
+		public static bool operator ==(Rectangle left, Rectangle right)
+		{
+			return left.Location == right.Location && left.Size == right.Size;
+		}
+
+		public static bool operator !=(Rectangle left, Rectangle right)
+		{
+			return !(left == right);
+		}
+
+		public Rectangle(int x, int y, int width, int height)
+		{
+			X = x;
+			Y = y;
+			Width = width;
+			Height = height;
+		}
+
+		public Rectangle(int2 location, Size size)
+		{
+			X = location.X;
+			Y = location.Y;
+			Width = size.Width;
+			Height = size.Height;
+		}
+
+		public int Left { get { return X; } }
+		public int Right { get { return X + Width; } }
+		public int Top { get { return Y; } }
+		public int Bottom { get { return Y + Height; } }
+		public bool IsEmpty { get { return X == 0 && Y == 0 && Width == 0 && Height == 0; } }
+		public int2 Location { get { return new int2(X, Y); } }
+		public Size Size { get { return new Size(Width, Height); } }
+
+		public bool Contains(int x, int y)
+		{
+			return x >= Left && x < Right && y >= Top && y < Bottom;
+		}
+
+		public bool Contains(int2 pt)
+		{
+			return Contains(pt.X, pt.Y);
+		}
+
+		public override bool Equals(object obj)
+		{
+			if (!(obj is Rectangle))
+				return false;
+
+			return this == (Rectangle)obj;
+		}
+
+		public override int GetHashCode()
+		{
+			return Height + Width ^ X + Y;
+		}
+
+		public bool IntersectsWith(Rectangle rect)
+		{
+			return Left < rect.Right && Right > rect.Left && Top < rect.Bottom && Bottom > rect.Top;
+		}
+
+		bool IntersectsWithInclusive(Rectangle r)
+		{
+			return Left <= r.Right && Right >= r.Left && Top <= r.Bottom && Bottom >= r.Top;
+		}
+
+		public static Rectangle Intersect(Rectangle a, Rectangle b)
+		{
+			if (!a.IntersectsWithInclusive(b))
+				return Empty;
+
+			return FromLTRB(Math.Max(a.Left, b.Left), Math.Max(a.Top, b.Top), Math.Min(a.Right, b.Right), Math.Min(a.Bottom, b.Bottom));
+		}
+
+		public bool Contains(Rectangle rect)
+		{
+			return rect == Intersect(this, rect);
+		}
+
+		public override string ToString()
+		{
+			return string.Format("{{X={0},Y={1},Width={2},Height={3}}}", X, Y, Width, Height);
+		}
+	}
+}