41 lines
1.5 KiB
C#
41 lines
1.5 KiB
C#
using UnityEngine;
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using UnityEngine.EventSystems;
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namespace XericUI.XTable.Rendering.Component
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{
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[RequireComponent(typeof(RectTransform))]
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internal sealed class XTableSelectionInput : MonoBehaviour, IPointerDownHandler, IDragHandler, IPointerUpHandler, IEndDragHandler
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{
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private XericUIActionTable m_Table;
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private bool m_Dragging;
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internal void Configure(XericUIActionTable table) => m_Table = table;
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public void OnPointerDown(PointerEventData eventData)
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{
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if (m_Table == null || !m_Table.TryGetCellFromScreenPoint((RectTransform)transform, eventData.position,
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eventData.pressEventCamera, true, out int row, out int col)) return;
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m_Dragging = true;
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m_Table.BeginSelection(row, col);
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}
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public void OnDrag(PointerEventData eventData)
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{
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if (!m_Dragging || m_Table == null) return;
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m_Table.UpdateSelectionDrag((RectTransform)transform, eventData.position, eventData.pressEventCamera);
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}
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public void OnPointerUp(PointerEventData eventData) => EndSelection();
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public void OnEndDrag(PointerEventData eventData) => EndSelection();
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private void OnDisable() => EndSelection();
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private void EndSelection()
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{
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if (!m_Dragging) return;
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m_Dragging = false;
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// 用 Unity 判空而非 ?.：表格可能已被销毁（“假 null”）。
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if (m_Table != null) m_Table.EndSelection();
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}
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}
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}
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