fully functional snap change menu

Assets/Scripts/LevelEditor/SnapDialog.cs

@@ -1,28 +0,0 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-
-namespace HeavenStudio.Editor 
-{
-    public class SnapDialog : MonoBehaviour
-    {
-        [SerializeField] private GameObject snapSetter;
-        private void Awake() 
-        {
-        }
-
-        public void SwitchSnapDialog()
-        {
-            if(snapSetter.activeSelf) {
-                snapSetter.SetActive(false);
-            } else {
-                snapSetter.SetActive(true);
-            }
-        }
-
-        private void Update()
-        {
-            
-        }
-    }
-}

Assets/Scripts/LevelEditor/SnapDialog.meta

@@ -0,0 +1,8 @@
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+guid: 537580972fcefa548bd9ee5e8254cbfc
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/LevelEditor/SnapDialog/SnapChangeButton.cs

@@ -0,0 +1,22 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.EventSystems;
+
+namespace HeavenStudio.Editor 
+{
+    public class SnapChangeButton : Button, IPointerDownHandler
+    {
+        public SnapDialog SnapDialog;
+        public bool isDown;
+
+        public override void OnPointerDown(PointerEventData eventData)
+        {
+            if (eventData.button == PointerEventData.InputButton.Left)
+            {
+                SnapDialog.ChangeCommon(isDown);
+            }
+        }
+    }
+}

Assets/Scripts/LevelEditor/SnapDialog/SnapChangeButton.cs.meta

@@ -0,0 +1,11 @@
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+guid: 7e0cac45de7228a4c8f7bc6adb0751a2
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/LevelEditor/SnapDialog/SnapDialog.cs

@@ -0,0 +1,52 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using HeavenStudio.Editor.Track;
+
+using TMPro;
+
+namespace HeavenStudio.Editor 
+{
+    public class SnapDialog : MonoBehaviour
+    {
+        [SerializeField] private GameObject snapSetter;
+        [SerializeField] private TMP_Text snapText;
+        private Timeline timeline;
+
+        private static float[] CommonDenominators = { 1, 2, 3, 4, 6, 8, 12, 16};
+        private int currentCommon = 3;
+        private void Start() 
+        {
+            timeline = Timeline.instance;
+        }
+
+        public void SwitchSnapDialog()
+        {
+            if(snapSetter.activeSelf) {
+                snapSetter.SetActive(false);
+            } else {
+                snapSetter.SetActive(true);
+            }
+        }
+
+        public void ChangeCommon(bool down = false)
+        {
+            if(down) {
+                currentCommon--;
+            } else {
+                currentCommon++;
+            }
+            if(currentCommon < 0) {
+                currentCommon = 0;
+            } else if(currentCommon >= CommonDenominators.Length) {
+                currentCommon = CommonDenominators.Length - 1;
+            }
+            timeline.SetSnap(1f / CommonDenominators[currentCommon]);
+        }
+
+        private void Update()
+        {
+            snapText.text = $"1/{CommonDenominators[currentCommon]}";
+        }
+    }
+}

Assets/Scripts/LevelEditor/TempoFinder.meta

@@ -0,0 +1,8 @@
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+guid: 36b14c8563ea37442aa7a2f0342549b5
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+DefaultImporter:
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+  userData: 
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Assets/Scripts/LevelEditor/Timeline/Timeline.cs

@@ -30,6 +30,8 @@ namespace HeavenStudio.Editor.Track
 
         public static float SnapInterval() { return instance.snapInterval; }
 
+        public void SetSnap(float snap) { snapInterval = snap; }
+
         public class CurrentTimelineState
         {
             public bool selected;