From dc8fa8bd8789abe76b671530ed1d0c6d8a524449 Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@tasvideos.org>
Date: Sat, 26 Jul 2014 17:22:58 +0000
Subject: [PATCH] Virtualpad - another performance improvement for Analogstick
 controls

---
 .../controls/VirtualPadAnalogStick.cs         | 23 +++++++++++++++----
 .../controls/components/AnalogSticklPanel.cs  | 12 ++++++----
 2 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/VirtualPadAnalogStick.cs b/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/VirtualPadAnalogStick.cs
index 2f35d530de..3d25fbc5f5 100644
--- a/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/VirtualPadAnalogStick.cs
+++ b/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/VirtualPadAnalogStick.cs
@@ -154,13 +154,28 @@ namespace BizHawk.Client.EmuHawk
 		{
 			if (AnalogStick.HasValue)
 			{
-				ManualX.Value = AnalogStick.X;
-				ManualY.Value = AnalogStick.Y;
+				// Setting .Value of a numeric causes a draw, so avoid it unless necessary
+				if (ManualX.Value != AnalogStick.X)
+				{
+					ManualX.Value = AnalogStick.X;
+				}
+
+				if (ManualY.Value != AnalogStick.Y)
+				{
+					ManualY.Value = AnalogStick.Y;
+				}
 			}
 			else
 			{
-				ManualX.Value = 0;
-				ManualY.Value = 0;
+				if (ManualX.Value != 0)
+				{
+					ManualX.Value = 0;
+				}
+
+				if (ManualY.Value != 0)
+				{
+					ManualY.Value = 0;
+				}
 			}
 		}
 
diff --git a/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/components/AnalogSticklPanel.cs b/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/components/AnalogSticklPanel.cs
index 33aae7930b..6d02fb3907 100644
--- a/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/components/AnalogSticklPanel.cs
+++ b/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/components/AnalogSticklPanel.cs
@@ -158,6 +158,7 @@ namespace BizHawk.Client.EmuHawk
 
 		private int MidX { get { return (int)((MaxX + 0.5) / 2); } }
 		private int MidY { get { return (int)((MaxY + 0.5) / 2); } }
+
 		private void AnalogControlPanel_Paint(object sender, PaintEventArgs e)
 		{
 			unchecked
@@ -247,10 +248,13 @@ namespace BizHawk.Client.EmuHawk
 
 		public void Clear()
 		{
-			X = Y = 0;
-			HasValue = false;
-			DoClearCallback();
-			Refresh();
+			if (X != 0 || Y != 0 || HasValue)
+			{
+				X = Y = 0;
+				HasValue = false;
+				DoClearCallback();
+				Refresh();
+			}
 		}
 
 		public void Set(IController controller)