feat: Add more quality util

Author: jcs090218

Assets/JCSUnity/Movies/Underwater.mp4.meta

@@ -78,7 +78,7 @@ public void Refresh()
 
             // Default to the current quality level.
             {
-                string text = QualityName();
+                string text = JCS_Quality.ItName();
 
                 JCS_UIUtil.Dropdown_SetSelection(this, text);
             }
@@ -106,21 +106,7 @@ private void OnValueChanged_TMP(TMP_Dropdown dropdown)
         }
         private void OnValueChanged(string text)
         {
-            int level = QualitySettings.names.IndexOfItem(text);
-
-            QualitySettings.SetQualityLevel(level);
-        }
-
-        /// <summary>
-        /// Return the name of the current quality level.
-        /// </summary>
-        private string QualityName()
-        {
-            int level = QualitySettings.GetQualityLevel();
-
-            string text = QualitySettings.names[level];
-
-            return text;
+            JCS_Quality.SetLevel(text);
         }
     }
 }

Assets/JCSUnity/Scripts/UI/Dropdown/JCS_DropdownQuality.cs

@@ -0,0 +1,94 @@
+/**
+ * $File: JCS_Quality.cs $
+ * $Date: 2025-07-14 01:14:38 $
+ * $Revision: $
+ * $Creator: Jen-Chieh Shen $
+ * $Notice: See LICENSE.txt for modification and distribution information 
+ *                   Copyright (c) 2025 by Shen, Jen-Chieh $
+ */
+using UnityEngine;
+using MyBox;
+
+namespace JCSUnity
+{
+    /// <summary>
+    /// Quality settings utilities.
+    /// </summary>
+    public static class JCS_Quality
+    {
+        /* Variables */
+
+        /* Setter & Getter */
+
+        /* Functions */
+
+        /// <summary>
+        /// Return the name of the current quality level.
+        /// </summary>
+        public static string ItName()
+        {
+            int level = QualitySettings.GetQualityLevel();
+
+            string text = QualitySettings.names[level];
+
+            return text;
+        }
+        public static int ItLevel()
+        {
+            return QualitySettings.GetQualityLevel();
+        }
+
+        /// <summary>
+        /// Return current quality settings by name.
+        /// </summary>
+        public static int ByName(string name)
+        {
+            return QualitySettings.names.IndexOfItem(name);
+        }
+
+        /// <summary>
+        /// Set the quality level by name.
+        /// </summary>
+        public static void SetLevel(string name)
+        {
+            int level = ByName(name);
+
+            SetLevel(level);
+        }
+        // @compatible
+        public static void SetLevel(int level)
+        {
+            QualitySettings.SetQualityLevel(level);
+        }
+
+        /// <summary>
+        /// Return true if the quality level reaches.
+        /// </summary>
+        public static bool IsAbove(string name)
+        {
+            return ByName(name) <= ItLevel();
+        }
+
+        /// <summary>
+        /// Return true if the quality level not reaches.
+        /// </summary>
+        public static bool IsBelow(string name)
+        {
+            return ItLevel() < ByName(name);
+        }
+
+        /// <summary>
+        /// Return true if the quality level is the exact level.
+        /// </summary>
+        public static bool Is(params string[] names)
+        {
+            foreach (string name in names)
+            {
+                if (ByName(name) == ItLevel())
+                    return true;
+            }
+
+            return false;
+        }
+    }
+}

Assets/JCSUnity/Scripts/Util/JCS_Quality.cs

@@ -0,0 +1,14 @@
+# JCS_Quality
+
+Quality settings utilities.
+
+## Functions
+
+| Name     | Description                                          |
+|:---------|:-----------------------------------------------------|
+| ItName   | Return the name of the current quality level.        |
+| ByName   | Return current quality settings by name.             |
+| SetLevel | Set the quality level by name.                       |
+| IsAbove  | Return true if the quality level reaches.            |
+| IsBelow  | Return true if the quality level not reaches.        |
+| Is       | Return true if the quality level is the exact level. |