Unity Project

reference
https://cardgames.io/yahtzee/

Library/PackageCache/com.unity.collab-proxy@1.2.16/Editor/Collab/Views/HistoryProgressSpinner.cs

@@ -0,0 +1,69 @@
+using UnityEngine;
+
+#if UNITY_2019_1_OR_NEWER
+using UnityEngine.UIElements;
+#else
+using UnityEngine.Experimental.UIElements;
+#endif
+
+namespace UnityEditor.Collaboration
+{
+    internal class HistoryProgressSpinner : Image
+    {
+        private readonly Texture2D[] m_StatusWheelTextures;
+        private bool m_ProgressEnabled;
+        private IVisualElementScheduledItem m_Animation;
+
+        public bool ProgressEnabled
+        {
+            set
+            {
+                if (m_ProgressEnabled == value)
+                    return;
+
+                m_ProgressEnabled = value;
+                visible = value;
+
+
+                if (value)
+                {
+                    if (m_Animation == null)
+                    {
+                        m_Animation = this.schedule.Execute(AnimateProgress).Every(33);
+                    }
+                    else
+                    {
+                        m_Animation.Resume();
+                    }
+                }
+                else
+                {
+                    if (m_Animation != null)
+                    {
+                        m_Animation.Pause();
+                    }
+                }
+            }
+        }
+
+        public HistoryProgressSpinner()
+        {
+            m_StatusWheelTextures = new Texture2D[12];
+            for (int i = 0; i < 12; i++)
+            {
+                m_StatusWheelTextures[i] = EditorGUIUtility.LoadIcon("WaitSpin" + i.ToString("00"));
+            }
+            image = m_StatusWheelTextures[0];
+            style.width = m_StatusWheelTextures[0].width;
+            style.height = m_StatusWheelTextures[0].height;
+            visible = false;
+        }
+
+        private void AnimateProgress(TimerState obj)
+        {
+            int frame = (int)Mathf.Repeat(Time.realtimeSinceStartup * 10, 11.99f);
+            image = m_StatusWheelTextures[frame];
+            MarkDirtyRepaint();
+        }
+    }
+}