Simple world tooltip.

OpenRA.Mods.Cnc/Widgets/Logic/WorldTooltipLogic.cs

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+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 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 COPYING.
+ */
+#endregion
+
+using OpenRA.Support;
+using OpenRA.Widgets;
+using T = OpenRA.Mods.Cnc.Widgets.TooltipWorldInteractionControllerWidget;
+
+namespace OpenRA.Mods.Cnc.Widgets.Logic
+{
+	public class WorldTooltipLogic
+	{
+		[ObjectCreator.UseCtor]
+		public WorldTooltipLogic([ObjectCreator.Param] Widget widget,
+		                         [ObjectCreator.Param] TooltipWorldInteractionControllerWidget wic)
+		{
+			widget.IsVisible = () => wic.TooltipType != T.WorldTooltipType.None;
+
+			var label = widget.GetWidget<LabelWidget>("LABEL");
+			var font = Game.Renderer.Fonts[label.Font];
+			var cachedWidth = 0;
+			label.GetText = () => 
+			{
+				var text = wic.TooltipType == T.WorldTooltipType.Unexplored ? "Unexplored Terrain" : 
+					wic.ActorTooltip.Name();
+				var textWidth = font.Measure(text).X;
+				if (textWidth != cachedWidth)
+				{
+					label.Bounds.Width = textWidth;
+					widget.Bounds.Width = 2*label.Bounds.X + textWidth;
+				}
+				return text;
+			};
+		}
+	}
+}
+