Move common widgets from Game to Mods.Common.

OpenRA.Mods.Common/Widgets/BackgroundWidget.cs

@@ -0,0 +1,73 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 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.Drawing;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.Common.Widgets
+{
+	public class BackgroundWidget : Widget
+	{
+		public readonly string Background = "dialog";
+		public readonly bool ClickThrough = false;
+		public readonly bool Draggable = false;
+
+		public override void Draw()
+		{
+			WidgetUtils.DrawPanel(Background, RenderBounds);
+		}
+
+		public BackgroundWidget() { }
+
+		bool moving;
+		int2? prevMouseLocation;
+
+		public override bool HandleMouseInput(MouseInput mi)
+		{
+			if (ClickThrough || !RenderBounds.Contains(mi.Location))
+				return false;
+
+			if (!Draggable || (moving && (!TakeMouseFocus(mi) || mi.Button != MouseButton.Left)))
+				return true;
+
+			if (prevMouseLocation == null)
+				prevMouseLocation = mi.Location;
+			var vec = mi.Location - (int2)prevMouseLocation;
+			prevMouseLocation = mi.Location;
+			switch (mi.Event)
+			{
+				case MouseInputEvent.Up:
+					moving = false;
+					YieldMouseFocus(mi);
+					break;
+				case MouseInputEvent.Down:
+					moving = true;
+					Bounds = new Rectangle(Bounds.X + vec.X, Bounds.Y + vec.Y, Bounds.Width, Bounds.Height);
+					break;
+				case MouseInputEvent.Move:
+					if (moving)
+						Bounds = new Rectangle(Bounds.X + vec.X, Bounds.Y + vec.Y, Bounds.Width, Bounds.Height);
+					break;
+			}
+
+			return true;
+		}
+
+		protected BackgroundWidget(BackgroundWidget other)
+			: base(other)
+		{
+			Background = other.Background;
+			ClickThrough = other.ClickThrough;
+			Draggable = other.Draggable;
+		}
+
+		public override Widget Clone() { return new BackgroundWidget(this); }
+	}
+}