Merge DropDownButtons

OpenRA.Game/Widgets/DropDownButtonWidget.cs

@@ -0,0 +1,147 @@
+#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 System;
+using System.Collections.Generic;
+using System.Drawing;
+using OpenRA.Graphics;
+
+namespace OpenRA.Widgets
+{
+	public class DropDownButtonWidget : ButtonWidget
+	{
+		Widget panel;
+		Widget fullscreenMask;
+		
+		public DropDownButtonWidget()
+			: base()
+		{
+		}
+
+		protected DropDownButtonWidget(DropDownButtonWidget widget)
+			: base(widget)
+		{
+		}
+
+		public override void DrawInner()
+		{
+			base.DrawInner();
+			var stateOffset = (Depressed) ? new int2(VisualHeight, VisualHeight) : new int2(0, 0);
+			
+			var image = ChromeProvider.GetImage("scrollbar", "down_arrow");
+			var rb = RenderBounds;
+			
+			WidgetUtils.DrawRGBA( image,
+				stateOffset + new float2( rb.Right - rb.Height + 4, 
+					rb.Top + (rb.Height - image.bounds.Height) / 2 ));
+
+			WidgetUtils.FillRectWithColor(new Rectangle(stateOffset.X + rb.Right - rb.Height,
+				stateOffset.Y + rb.Top + 3, 1, rb.Height - 6),
+				Color.White);
+		}
+
+		public override Widget Clone() { return new DropDownButtonWidget(this); }
+		
+		// This is crap
+		public override int UsableWidth { get { return Bounds.Width - Bounds.Height; } } /* space for button */	
+
+		public void RemovePanel()
+		{
+			Widget.RootWidget.RemoveChild(fullscreenMask);
+			Widget.RootWidget.RemoveChild(panel);
+			Game.BeforeGameStart -= RemovePanel;
+			panel = fullscreenMask = null;
+		}
+		
+		public void AttachPanel(Widget p)
+		{
+			if (panel != null)
+				throw new InvalidOperationException("Attempted to attach a panel to an open dropdown");
+			panel = p;
+			
+			// Mask to prevent any clicks from being sent to other widgets
+			fullscreenMask = new ContainerWidget();
+			fullscreenMask.Bounds = new Rectangle(0, 0, Game.viewport.Width, Game.viewport.Height);
+			Widget.RootWidget.AddChild(fullscreenMask);
+			Game.BeforeGameStart += RemovePanel;
+
+			fullscreenMask.OnMouseDown = mi =>
+			{
+				RemovePanel();
+				return true;
+			};
+			fullscreenMask.OnMouseUp = mi => true;
+
+			var oldBounds = panel.Bounds;
+			panel.Bounds = new Rectangle(RenderOrigin.X, RenderOrigin.Y + Bounds.Height, oldBounds.Width, oldBounds.Height);
+			Widget.RootWidget.AddChild(panel);
+		}
+		
+		[Obsolete] public static void ShowDropPanel(Widget w, Widget panel, IEnumerable<Widget> dismissAfter, Func<bool> onDismiss)
+		{
+			// Mask to prevent any clicks from being sent to other widgets
+			var fullscreenMask = new ContainerWidget();
+			fullscreenMask.Bounds = new Rectangle(0, 0, Game.viewport.Width, Game.viewport.Height);
+			Widget.RootWidget.AddChild(fullscreenMask);
+			
+			Action HideDropDown = () =>
+			{
+				Widget.RootWidget.RemoveChild(fullscreenMask);
+				Widget.RootWidget.RemoveChild(panel);
+			};
+			
+			HideDropDown += () => Game.BeforeGameStart -= HideDropDown;
+			Game.BeforeGameStart += HideDropDown;
+
+			fullscreenMask.OnMouseDown = mi =>
+			{
+				if (onDismiss()) HideDropDown();
+				return true;
+			};
+			fullscreenMask.OnMouseUp = mi => true;
+
+			var oldBounds = panel.Bounds;
+			panel.Bounds = new Rectangle(w.RenderOrigin.X, w.RenderOrigin.Y + w.Bounds.Height, oldBounds.Width, oldBounds.Height);
+			panel.OnMouseUp = mi => true;
+			
+			foreach (var ww in dismissAfter)
+			{
+				var origMouseUp = ww.OnMouseUp;
+				ww.OnMouseUp = mi => { var result = origMouseUp(mi); if (onDismiss()) HideDropDown(); return result; };
+			}
+			Widget.RootWidget.AddChild(panel);
+		}
+		
+		[Obsolete] public static void ShowDropDown<T>(Widget w, IEnumerable<T> ts, Func<T, int, LabelWidget> ft)
+		{
+			var dropDown = new ScrollPanelWidget();
+			dropDown.Bounds = new Rectangle(w.RenderOrigin.X, w.RenderOrigin.Y + w.Bounds.Height, w.Bounds.Width, 100);
+			dropDown.ItemSpacing = 1;
+
+			List<LabelWidget> items = new List<LabelWidget>();
+			List<Widget> dismissAfter = new List<Widget>();
+			foreach (var t in ts)
+			{
+				var ww = ft(t, dropDown.Bounds.Width - dropDown.ScrollbarWidth);
+				dismissAfter.Add(ww);
+				ww.OnMouseMove = mi => items.Do(lw =>
+				{
+					lw.Background = null; ww.Background = "dialog2";
+				});
+	
+				dropDown.AddChild(ww);
+				items.Add(ww);
+			}
+			
+			dropDown.Bounds.Height = Math.Min(150, dropDown.ContentHeight);
+			ShowDropPanel(w, dropDown, dismissAfter, () => true);
+		}
+	}
+}