world tooltips as widget

OpenRA.Game/Widgets/WorldTooltipWidget.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Drawing;
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Widgets
+{
+	public class WorldTooltipWidget : Widget
+	{
+		const int worldTooltipDelay = 10;		/* ticks */
+
+		public override void Draw(World world)
+		{
+			if (Game.chrome.ticksSinceLastMove < worldTooltipDelay || world == null || world.LocalPlayer == null)
+				return;
+
+			var actor = world.FindUnitsAtMouse(Game.chrome.lastMousePos).FirstOrDefault();
+			if (actor == null) return;
+
+			var text = actor.Info.Traits.Contains<ValuedInfo>()
+				? actor.Info.Traits.Get<ValuedInfo>().Description
+				: actor.Info.Name;
+			var text2 = (actor.Owner == world.LocalPlayer)
+				? "" : (actor.Owner == world.NeutralPlayer ? "{0}" : "{0} ({1})").F(actor.Owner.PlayerName, world.LocalPlayer.Stances[actor.Owner]);
+
+			var renderer = Game.chrome.renderer;
+
+			var sz = renderer.BoldFont.Measure(text);
+			var sz2 = renderer.RegularFont.Measure(text2);
+
+			sz.X = Math.Max(sz.X, sz2.X);
+
+			if (text2 != "") sz.Y += sz2.Y + 2;
+
+			sz.X += 20;
+			sz.Y += 24;
+
+			WidgetUtils.DrawPanel("dialog4", Rectangle.FromLTRB(
+				Game.chrome.lastMousePos.X + 20, Game.chrome.lastMousePos.Y + 20,
+				Game.chrome.lastMousePos.X + sz.X + 20, Game.chrome.lastMousePos.Y + sz.Y + 20));
+
+			renderer.BoldFont.DrawText(text,
+				new float2(Game.chrome.lastMousePos.X + 30, Game.chrome.lastMousePos.Y + 30), Color.White);
+			renderer.RegularFont.DrawText(text2,
+				new float2(Game.chrome.lastMousePos.X + 30, Game.chrome.lastMousePos.Y + 50), Color.White);
+
+			renderer.RgbaSpriteRenderer.Flush();
+		}
+	}
+}