From 91540da801364dd111ecf44b6682b4f505ff307f Mon Sep 17 00:00:00 2001
From: Paul Chote <pchote@users.noreply.github.com>
Date: Wed, 9 Aug 2017 17:58:54 +0000
Subject: [PATCH] Focus the ViewportController on Standard/Inverted scroll
 modes.

---
 OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs b/OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs
index 0f86fbc54011..43744e41dd7c 100644
--- a/OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs
+++ b/OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs
@@ -308,7 +308,12 @@ public override bool HandleMouseInput(MouseInput mi)
 			if (scrollType == MouseScrollType.Standard || scrollType == MouseScrollType.Inverted)
 			{
 				if (mi.Event == MouseInputEvent.Down && !isStandardScrolling)
+				{
+					if (!TakeMouseFocus(mi))
+						return false;
+
 					standardScrollStart = mi.Location;
+				}
 				else if (mi.Event == MouseInputEvent.Move && (isStandardScrolling ||
 					(standardScrollStart.HasValue && ((standardScrollStart.Value - mi.Location).Length > Game.Settings.Game.MouseScrollDeadzone))))
 				{
@@ -322,6 +327,7 @@ public override bool HandleMouseInput(MouseInput mi)
 					var wasStandardScrolling = isStandardScrolling;
 					isStandardScrolling = false;
 					standardScrollStart = null;
+					YieldMouseFocus(mi);
 
 					if (wasStandardScrolling)
 						return true;
@@ -335,6 +341,7 @@ public override bool HandleMouseInput(MouseInput mi)
 				{
 					if (!TakeMouseFocus(mi))
 						return false;
+
 					joystickScrollStart = mi.Location;
 				}