split out hardcoded editor tools into ITool impls

OpenRA.Editor/WaypointTool.cs

@@ -0,0 +1,40 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2010 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. For more information,
+ * see LICENSE.
+ */
+#endregion
+
+using System.Drawing;
+using System.Linq;
+
+using SGraphics = System.Drawing.Graphics;
+
+namespace OpenRA.Editor
+{
+	class WaypointTool : ITool
+	{
+		WaypointTemplate Waypoint;
+
+		public WaypointTool(WaypointTemplate waypoint) { Waypoint = waypoint; }
+
+		public void Apply(Surface surface)
+		{
+			var k = surface.Map.Waypoints.FirstOrDefault(a => a.Value == surface.GetBrushLocation());
+			if (k.Key != null) surface.Map.Waypoints.Remove(k.Key);
+
+			surface.Map.Waypoints.Add(surface.NextWpid(), surface.GetBrushLocation());
+		}
+
+		public void Preview(Surface surface, SGraphics g)
+		{
+			g.DrawRectangle(Pens.LimeGreen,
+					surface.TileSet.TileSize * surface.GetBrushLocation().X * surface.Zoom + surface.GetOffset().X + 4,
+					surface.TileSet.TileSize * surface.GetBrushLocation().Y * surface.Zoom + surface.GetOffset().Y + 4,
+					(surface.TileSet.TileSize - 8) * surface.Zoom, (surface.TileSet.TileSize - 8) * surface.Zoom);
+		}
+	}
+}