1 files changed, 36 insertions, 0 deletions
diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Utility/SetPropertyUtility.cs b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Utility/SetPropertyUtility.cs
new file mode 100644
index 0000000..15d8519
--- /dev/null
+++ b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Utility/SetPropertyUtility.cs
@@ -0,0 +1,36 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine.Events;
+
+namespace UnityEngine.UI
+{
+    internal static class SetPropertyUtility
+    {
+        public static bool SetColor(ref Color currentValue, Color newValue)
+        {
+            if (currentValue.r == newValue.r && currentValue.g == newValue.g && currentValue.b == newValue.b && currentValue.a == newValue.a)
+                return false;
+
+            currentValue = newValue;
+            return true;
+        }
+
+        public static bool SetStruct<T>(ref T currentValue, T newValue) where T : struct
+        {
+            if (EqualityComparer<T>.Default.Equals(currentValue, newValue))
+                return false;
+
+            currentValue = newValue;
+            return true;
+        }
+
+        public static bool SetClass<T>(ref T currentValue, T newValue) where T : class
+        {
+            if ((currentValue == null && newValue == null) || (currentValue != null && currentValue.Equals(newValue)))
+                return false;
+
+            currentValue = newValue;
+            return true;
+        }
+    }
+}