Split unrelated hotkeys from WorldInteractionController.

OpenRA.Mods.Common/Widgets/Logic/Ingame/Hotkeys/TogglePixelDoubleHotkeyLogic.cs

@@ -0,0 +1,48 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2017 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.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Lint;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.Common.Widgets.Logic.Ingame
+{
+	[ChromeLogicArgsHotkeys("TogglePixelDoubleKey")]
+	public class TogglePixelDoubleHotkeyLogic : SingleHotkeyBaseLogic
+	{
+		readonly Viewport viewport;
+
+		[ObjectCreator.UseCtor]
+		public TogglePixelDoubleHotkeyLogic(Widget widget, WorldRenderer worldRenderer, Dictionary<string, MiniYaml> logicArgs)
+			: base(widget, "TogglePixelDoubleKey", "WORLD_KEYHANDLER", logicArgs)
+		{
+			viewport = worldRenderer.Viewport;
+		}
+
+		protected override bool OnHotkeyActivated(KeyInput e)
+		{
+			// Zoom is currently always set directly, so we don't need to worry about floating point imprecision
+			if (viewport.Zoom == 1f)
+				viewport.Zoom = 2f;
+			else
+			{
+				// Reset zoom to regular view if it was anything else before
+				// (like a zoom level only reachable by using the scroll wheel).
+				viewport.Zoom = 1f;
+			}
+
+			Game.Settings.Graphics.PixelDouble = viewport.Zoom == 2f;
+
+			return true;
+		}
+	}
+}