Add 'Packages/src/' from commit '32b93d3eeb52c6471244c324d0a6572b756c561a'

git-subtree-dir: Packages/src git-subtree-mainline: 2aa8d41950 git-subtree-split: 32b93d3eeb
2026-05-16 05:00:07 +00:00 · 2024-01-23 14:55:04 +09:00
parent 2aa8d41950 32b93d3eeb
commit 974aff72d7
171 changed files with 109192 additions and 0 deletions
--- a/Packages/src/Samples~/Demo/Scripts/UIElementDragger.cs
+++ b/Packages/src/Samples~/Demo/Scripts/UIElementDragger.cs
@@ -0,0 +1,93 @@
+using System;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.Serialization;
+
+public class UIElementDragger : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
+{
+    [SerializeField]
+    private Target m_Target;
+
+    [SerializeField]
+    private Transform m_CustomTarget;
+
+    [FormerlySerializedAs("ex2")]
+    [SerializeField]
+    private bool m_UseCanvasScale;
+
+    private Canvas _canvas;
+    private RectTransform _rectTransform;
+
+    private void OnEnable()
+    {
+        _rectTransform = GetComponent<RectTransform>();
+        _canvas = GetComponentInParent<Canvas>();
+    }
+
+    public void OnBeginDrag(PointerEventData eventData)
+    {
+    }
+
+    public void OnDrag(PointerEventData eventData)
+    {
+        var delta = (Vector3)GetLocalDelta(eventData.delta);
+
+        switch (m_Target)
+        {
+            case Target.Self:
+                _rectTransform.localPosition += delta;
+                break;
+            case Target.Parent:
+                _rectTransform.parent.localPosition += delta;
+                break;
+            case Target.Custom:
+                _rectTransform.localPosition += delta;
+                if (m_CustomTarget)
+                {
+                    if (m_UseCanvasScale)
+                    {
+                        delta.Scale(_canvas.rootCanvas.transform.localScale);
+                    }
+
+                    m_CustomTarget.localPosition += delta;
+                }
+
+                break;
+        }
+    }
+
+    public void OnEndDrag(PointerEventData eventData)
+    {
+    }
+
+    private Vector2 GetLocalDelta(Vector2 evDelta)
+    {
+        switch (_canvas.renderMode)
+        {
+            case RenderMode.ScreenSpaceOverlay:
+            {
+                var zero = transform.InverseTransformPoint(Vector2.zero);
+                var delta = transform.InverseTransformPoint(evDelta);
+                return delta - zero;
+            }
+            case RenderMode.ScreenSpaceCamera:
+            case RenderMode.WorldSpace:
+            {
+                RectTransformUtility.ScreenPointToLocalPointInRectangle(_rectTransform, Vector2.zero,
+                    _canvas.worldCamera, out var zero);
+                RectTransformUtility.ScreenPointToLocalPointInRectangle(_rectTransform, evDelta,
+                    _canvas.worldCamera, out var delta);
+                return delta - zero;
+            }
+            default:
+                throw new NotSupportedException();
+        }
+    }
+
+    private enum Target
+    {
+        Self,
+        Parent,
+        Custom
+    }
+}