Add developer shortcut to reload chrome files

Hitting Ctrl+Shift+C will re-initialize the chrome provider,
reloading all chrome files instantly. Useful when changing the
UI.

Note: A new "RootWidget" was created to trap top-level (global)
shortcuts instead of putting everything in Widget.

OpenRA.Game/Graphics/ChromeProvider.cs

@@ -27,6 +27,8 @@ namespace OpenRA.Graphics
 		static Dictionary<string, Sheet> cachedSheets;
 		static Dictionary<string, Dictionary<string, Sprite>> cachedSprites;
 
+		static string[] storedChromeFiles;
+
 		public static void Initialize(params string[] chromeFiles)
 		{
 			collections = new Dictionary<string, Collection>();
@@ -34,7 +36,13 @@ namespace OpenRA.Graphics
 			cachedSprites = new Dictionary<string, Dictionary<string, Sprite>>();
 
 			if (chromeFiles.Length == 0)
-				return;
+			{
+				chromeFiles = storedChromeFiles;
+				if (chromeFiles == null || chromeFiles.Length == 0)
+					return;
+			}
+			else
+				storedChromeFiles = chromeFiles;
 
 			var chrome = chromeFiles.Select(s => MiniYaml.FromFile(s)).Aggregate(MiniYaml.MergeLiberal);
 

OpenRA.Game/OpenRA.Game.csproj

@@ -250,6 +250,7 @@
     <Compile Include="GameRules\RulesetCache.cs" />
     <Compile Include="Support\MersenneTwister.cs" />
     <Compile Include="GameInformation.cs" />
+    <Compile Include="Widgets\RootWidget.cs" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="FileSystem\D2kSoundResources.cs" />

OpenRA.Game/Settings.cs

@@ -176,6 +176,8 @@ namespace OpenRA
 		public Hotkey ObserverWorldView = new Hotkey(Keycode.EQUALS, Modifiers.None);
 
 		public Hotkey TogglePixelDoubleKey = new Hotkey(Keycode.PERIOD, Modifiers.None);
+
+		public Hotkey DevReloadChromeKey = new Hotkey(Keycode.C, Modifiers.Ctrl | Modifiers.Shift);
 	}
 
 	public class IrcSettings

OpenRA.Game/Widgets/RootWidget.cs

@@ -0,0 +1,39 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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 System;
+using OpenRA.Graphics;
+
+namespace OpenRA.Widgets
+{
+	public class RootWidget : ContainerWidget
+	{
+		public RootWidget()
+		{
+			IgnoreMouseOver = true;
+		}
+
+		public override bool HandleKeyPress(KeyInput e)
+		{
+			if (e.Event == KeyInputEvent.Down)
+			{
+				var hk = Hotkey.FromKeyInput(e);
+
+				if (hk == Game.Settings.Keys.DevReloadChromeKey)
+				{
+					ChromeProvider.Initialize();
+					return true;
+				}
+			}
+
+			return base.HandleKeyPress(e);
+		}
+	}
+}

OpenRA.Game/Widgets/Widget.cs

@@ -19,7 +19,7 @@ namespace OpenRA.Widgets
 {
 	public static class Ui
 	{
-		public static Widget Root = new ContainerWidget();
+		public static Widget Root = new RootWidget();
 
 		public static int LastTickTime = Environment.TickCount;