311 lines
11 KiB
C#
311 lines
11 KiB
C#
using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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namespace MeowmentDebugTool
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{
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/// <summary>
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/// 可拖动的悬浮按钮
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/// 点击打开调试工具，可以在屏幕上自由拖动
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/// </summary>
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public class DraggableFloatingButton : MonoBehaviour, IPointerDownHandler, IBeginDragHandler, IDragHandler, IEndDragHandler, IPointerClickHandler
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{
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[Header("设置")]
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[Tooltip("是否启用拖动功能")]
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public bool enableDragging = false;
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[Tooltip("是否限制在屏幕范围内")]
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public bool clampToScreen = true;
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[Tooltip("与屏幕边缘的最小距离")]
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public float edgePadding = 20f;
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[Header("自动吸附")]
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[Tooltip("是否自动吸附到屏幕边缘")]
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public bool snapToEdge = true;
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[Tooltip("吸附动画时间")]
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public float snapDuration = 0.1f;
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private RectTransform rectTransform;
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private Canvas canvas;
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private Vector2 dragOffset;
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private bool isDragging = false;
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private Vector2 targetPosition;
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private bool isSnapping = false;
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// 用于区分点击和拖动
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private bool hasDragged = false; // 标记本次操作是否进行了拖动
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private Vector2 dragStartPosition; // 拖动起始位置
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private const float dragThreshold = 5f; // 拖动阈值，移动超过这个距离才算拖动
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private void Awake()
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{
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rectTransform = GetComponent<RectTransform>();
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canvas = GetComponentInParent<Canvas>();
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if (canvas == null)
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{
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Debug.LogError("DraggableFloatingButton 必须在Canvas下！");
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}
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targetPosition = rectTransform.anchoredPosition;
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}
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private void Update()
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{
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// 平滑移动到目标位置（吸附动画）
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if (isSnapping && !isDragging)
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{
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rectTransform.anchoredPosition = Vector2.Lerp(
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rectTransform.anchoredPosition,
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targetPosition,
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Time.deltaTime / snapDuration
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);
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if (Vector2.Distance(rectTransform.anchoredPosition, targetPosition) < 0.5f)
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{
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rectTransform.anchoredPosition = targetPosition;
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isSnapping = false;
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}
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}
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}
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/// <summary>
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/// 每次按下时重置拖动标记（在OnBeginDrag之前触发）
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/// </summary>
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public void OnPointerDown(PointerEventData eventData)
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{
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hasDragged = false; // 重置拖动标记
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Debug.Log("[DraggableFloatingButton] OnPointerDown - 重置拖动标记");
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}
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public void OnBeginDrag(PointerEventData eventData)
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{
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if (!enableDragging)
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{
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// 如果禁用拖动，将事件传递给父级，让其他UI元素能够接收拖动事件
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PassEventToParent(eventData, ExecuteEvents.beginDragHandler);
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return;
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}
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isDragging = true;
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isSnapping = false;
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dragStartPosition = eventData.position; // 记录起始位置
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// 计算拖动偏移
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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canvas.transform as RectTransform,
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eventData.position,
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eventData.pressEventCamera,
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out Vector2 localPoint
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);
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dragOffset = rectTransform.anchoredPosition - localPoint;
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}
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public void OnDrag(PointerEventData eventData)
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{
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if (!enableDragging)
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{
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// 如果禁用拖动，将事件传递给父级
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PassEventToParent(eventData, ExecuteEvents.dragHandler);
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return;
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}
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if (!isDragging) return;
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// 检查是否超过拖动阈值
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float dragDistance = Vector2.Distance(dragStartPosition, eventData.position);
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if (dragDistance > dragThreshold)
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{
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hasDragged = true; // 标记已经拖动
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}
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// 转换屏幕坐标到Canvas局部坐标
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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canvas.transform as RectTransform,
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eventData.position,
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eventData.pressEventCamera,
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out Vector2 localPoint
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);
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// 应用拖动偏移
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Vector2 newPosition = localPoint + dragOffset;
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// 限制在屏幕范围内
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if (clampToScreen)
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{
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newPosition = ClampToScreen(newPosition);
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}
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rectTransform.anchoredPosition = newPosition;
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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if (!enableDragging)
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{
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// 如果禁用拖动，将事件传递给父级
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PassEventToParent(eventData, ExecuteEvents.endDragHandler);
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return;
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}
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isDragging = false;
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// 自动吸附到最近的边缘
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if (snapToEdge)
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{
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SnapToNearestEdge();
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}
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}
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/// <summary>
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/// 处理点击事件 - 只有在没有拖动时才打开窗口
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/// </summary>
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public void OnPointerClick(PointerEventData eventData)
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{
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Debug.Log($"[DraggableFloatingButton] OnPointerClick 被触发，hasDragged={hasDragged}");
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// 如果进行了拖动，不执行点击操作
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if (hasDragged)
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{
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Debug.Log("[!] 检测到拖动，不打开窗口");
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return;
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}
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// 纯点击操作，打开调试窗口
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Debug.Log("[OK] 点击浮窗，打开调试窗口");
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UniversalDebugTool debugTool = FindObjectOfType<UniversalDebugTool>();
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if (debugTool != null)
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{
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debugTool.OpenDebugWindow();
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}
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else
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{
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Debug.LogWarning("[X] 未找到 UniversalDebugTool 实例！");
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}
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}
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private Vector2 ClampToScreen(Vector2 position)
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{
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RectTransform canvasRect = canvas.transform as RectTransform;
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Vector2 canvasSize = canvasRect.sizeDelta;
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Vector2 buttonSize = rectTransform.sizeDelta;
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// 计算可移动范围
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float minX = -canvasSize.x / 2 + buttonSize.x / 2 + edgePadding;
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float maxX = canvasSize.x / 2 - buttonSize.x / 2 - edgePadding;
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float minY = -canvasSize.y / 2 + buttonSize.y / 2 + edgePadding;
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float maxY = canvasSize.y / 2 - buttonSize.y / 2 - edgePadding;
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position.x = Mathf.Clamp(position.x, minX, maxX);
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position.y = Mathf.Clamp(position.y, minY, maxY);
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return position;
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}
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private void SnapToNearestEdge()
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{
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RectTransform canvasRect = canvas.transform as RectTransform;
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Vector2 canvasSize = canvasRect.sizeDelta;
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Vector2 currentPos = rectTransform.anchoredPosition;
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// 计算到各个边缘的距离
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float distToLeft = Mathf.Abs(currentPos.x + canvasSize.x / 2);
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float distToRight = Mathf.Abs(currentPos.x - canvasSize.x / 2);
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float distToTop = Mathf.Abs(currentPos.y - canvasSize.y / 2);
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float distToBottom = Mathf.Abs(currentPos.y + canvasSize.y / 2);
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// 找到最近的边
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float minDist = Mathf.Min(distToLeft, distToRight, distToTop, distToBottom);
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Vector2 snapPosition = currentPos;
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Vector2 buttonSize = rectTransform.sizeDelta;
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if (minDist == distToLeft)
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{
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// 吸附到左边
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snapPosition.x = -canvasSize.x / 2 + buttonSize.x / 2 + edgePadding;
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}
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else if (minDist == distToRight)
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{
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// 吸附到右边
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snapPosition.x = canvasSize.x / 2 - buttonSize.x / 2 - edgePadding;
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}
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else if (minDist == distToTop)
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{
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// 吸附到顶部
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snapPosition.y = canvasSize.y / 2 - buttonSize.y / 2 - edgePadding;
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}
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else if (minDist == distToBottom)
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{
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// 吸附到底部
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snapPosition.y = -canvasSize.y / 2 + buttonSize.y / 2 + edgePadding;
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}
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// 确保在屏幕范围内
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snapPosition = ClampToScreen(snapPosition);
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targetPosition = snapPosition;
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isSnapping = true;
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}
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/// <summary>
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/// 设置悬浮按钮位置
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/// </summary>
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public void SetPosition(Vector2 position)
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{
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if (clampToScreen)
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{
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position = ClampToScreen(position);
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}
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rectTransform.anchoredPosition = position;
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targetPosition = position;
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}
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/// <summary>
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/// 获取当前位置
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/// </summary>
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public Vector2 GetPosition()
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{
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return rectTransform.anchoredPosition;
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}
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/// <summary>
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/// 将事件传递给父级或下层的UI元素
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/// 当拖动功能被禁用时，确保其他UI元素仍能接收拖动事件
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/// </summary>
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private void PassEventToParent<T>(PointerEventData eventData, ExecuteEvents.EventFunction<T> eventFunction) where T : IEventSystemHandler
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{
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Transform parent = transform.parent;
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while (parent != null)
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{
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// 尝试执行父级对象上的事件
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if (ExecuteEvents.Execute(parent.gameObject, eventData, eventFunction))
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{
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// 如果父级处理了事件，停止传递
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return;
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}
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parent = parent.parent;
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}
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// 如果父级都没有处理，尝试传递给射线检测到的下一个对象
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var raycastResults = new System.Collections.Generic.List<RaycastResult>();
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EventSystem.current.RaycastAll(eventData, raycastResults);
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// 跳过当前对象，找到下一个可以处理事件的对象
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foreach (var result in raycastResults)
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{
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if (result.gameObject == gameObject)
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continue;
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if (ExecuteEvents.Execute(result.gameObject, eventData, eventFunction))
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{
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return;
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}
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}
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}
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}
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}
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