demo

2026-08-17 18:18:13 +08:00
parent 5765f411e9
commit d2cd3b9fa8
188 changed files with 32929 additions and 2 deletions
@@ -0,0 +1,125 @@
+#nullable enable
+
+using System;
+using TMPro;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+
+namespace ReplacedPerson.Runtime
+{
+    [RequireComponent(typeof(RectTransform), typeof(Button))]
+    public sealed class ReplacedCardDragHandler : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
+    {
+        private Canvas? _canvas;
+        private RectTransform? _ghost;
+        private ReplacedCardMotion? _motion;
+        private Action<Vector2>? _dropAction;
+        private Vector2 _dragStart;
+        private bool _hasDragStart;
+
+        public void Configure(Action<Vector2> dropAction)
+        {
+            _dropAction = dropAction;
+        }
+
+        public void OnBeginDrag(PointerEventData eventData)
+        {
+            CleanupGhost();
+            _dragStart = eventData.position;
+            _hasDragStart = true;
+            _canvas = GetComponentInParent<Canvas>()?.rootCanvas;
+            if (_canvas == null) return;
+            _motion = GetComponent<ReplacedCardMotion>();
+            _motion?.SetDragging(true);
+            _ghost = CreateGhost(_canvas.transform);
+            UpdateGhostPosition(eventData);
+        }
+
+        public void OnDrag(PointerEventData eventData)
+        {
+            UpdateGhostPosition(eventData);
+        }
+
+        public void OnEndDrag(PointerEventData eventData)
+        {
+            var moved = _hasDragStart && (eventData.position - _dragStart).sqrMagnitude >= 100f;
+            _motion?.SetDragging(false);
+            _motion = null;
+            CleanupGhost();
+            _hasDragStart = false;
+            if (moved && _dropAction != null) _dropAction(eventData.position);
+            else GetComponent<Button>().onClick.Invoke();
+        }
+
+        private RectTransform CreateGhost(Transform canvasRoot)
+        {
+            var sourceRect = (RectTransform)transform;
+            var sourceImage = GetComponent<Image>();
+            var sourceLabel = transform.Find("Label")?.GetComponent<TMP_Text>();
+            var ghostObject = new GameObject("CardDragGhost", typeof(RectTransform), typeof(CanvasRenderer), typeof(Image), typeof(CanvasGroup));
+            var ghostRect = ghostObject.GetComponent<RectTransform>();
+            ghostRect.SetParent(canvasRoot, false);
+            ghostRect.anchorMin = ghostRect.anchorMax = new Vector2(.5f, .5f);
+            ghostRect.pivot = sourceRect.pivot;
+            ghostRect.sizeDelta = sourceRect.rect.size;
+            ghostRect.localScale = Vector3.one * 1.06f;
+            ghostRect.SetAsLastSibling();
+
+            var ghostImage = ghostObject.GetComponent<Image>();
+            ghostImage.sprite = sourceImage.sprite;
+            ghostImage.type = sourceImage.type;
+            ghostImage.color = sourceImage.color;
+            ghostImage.material = sourceImage.material;
+            ghostImage.raycastTarget = false;
+            var group = ghostObject.GetComponent<CanvasGroup>();
+            group.alpha = .94f;
+            group.blocksRaycasts = false;
+            group.interactable = false;
+
+            if (sourceLabel != null)
+            {
+                var labelObject = new GameObject("Label", typeof(RectTransform), typeof(CanvasRenderer), typeof(TextMeshProUGUI));
+                var labelRect = labelObject.GetComponent<RectTransform>();
+                labelRect.SetParent(ghostRect, false);
+                labelRect.anchorMin = Vector2.zero;
+                labelRect.anchorMax = Vector2.one;
+                labelRect.offsetMin = new Vector2(8, 4);
+                labelRect.offsetMax = new Vector2(-8, -4);
+                var label = labelObject.GetComponent<TextMeshProUGUI>();
+                label.font = sourceLabel.font;
+                label.fontSize = sourceLabel.fontSize;
+                label.alignment = sourceLabel.alignment;
+                label.color = sourceLabel.color;
+                label.text = sourceLabel.text;
+                label.enableWordWrapping = sourceLabel.enableWordWrapping;
+                label.raycastTarget = false;
+            }
+            return ghostRect;
+        }
+
+        private void UpdateGhostPosition(PointerEventData eventData)
+        {
+            if (_ghost == null || _canvas == null) return;
+            var canvasRect = (RectTransform)_canvas.transform;
+            var camera = _canvas.renderMode == RenderMode.ScreenSpaceOverlay ? null : _canvas.worldCamera;
+            if (RectTransformUtility.ScreenPointToLocalPointInRectangle(canvasRect, eventData.position, camera, out var localPoint))
+                _ghost.anchoredPosition = localPoint;
+        }
+
+        private void OnDisable()
+        {
+            _motion?.SetDragging(false);
+            _motion = null;
+            _hasDragStart = false;
+            CleanupGhost();
+        }
+
+        private void CleanupGhost()
+        {
+            if (_ghost != null) Destroy(_ghost.gameObject);
+            _ghost = null;
+            _canvas = null;
+        }
+    }
+}