修复表格框选可能随机多选，补充表格拖拽多选，视图自动偏移的功能

2026-07-29 11:27:03 +08:00
parent 5c51d35d8e
commit 2fb8af52a6
9 changed files with 361 additions and 134 deletions
@@ -0,0 +1,120 @@
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+using XericLibrary.Runtime.MacroLibrary;
+
+namespace XericUI.XTable.Rendering.Component
+{
+    /// <summary>单个渲染层的固定框选输入与视觉覆盖层。</summary>
+    [RequireComponent(typeof(RectTransform), typeof(Image))]
+    public sealed class XTableSelectionOverlay : MonoBehaviour, IPointerDownHandler, IDragHandler, IPointerUpHandler, IEndDragHandler
+    {
+        private XericUIActionTable m_Table;
+        private Image m_Fill;
+        private int m_RowStart;
+        private int m_RowEnd;
+        private int m_ColStart;
+        private int m_ColEnd;
+        private bool m_Dragging;
+
+        public void Configure(XericUIActionTable table, int rowStart, int rowEnd, int colStart, int colEnd)
+        {
+            m_Table = table;
+            m_RowStart = rowStart;
+            m_RowEnd = rowEnd;
+            m_ColStart = colStart;
+            m_ColEnd = colEnd;
+            Rect region = table.GetTableRect(rowStart, rowEnd, colStart, colEnd);
+            var rt = transform.RectTransform();
+            rt.anchorMin = new Vector2(0, 1);
+            rt.anchorMax = new Vector2(0, 1);
+            rt.pivot = new Vector2(0, 1);
+            rt.anchoredPosition = new Vector2(region.x, -region.y);
+            rt.sizeDelta = region.size;
+            EnsureVisuals();
+            RefreshVisual();
+        }
+
+        public void RefreshVisual()
+        {
+            EnsureVisuals();
+            if (m_Table == null || !m_Table.SelectionHandle.HasSelection || m_RowStart >= m_RowEnd || m_ColStart >= m_ColEnd)
+            {
+                m_Fill.gameObject.SetActive(false);
+                return;
+            }
+
+            int rs = Mathf.Max(m_RowStart, m_Table.SelectionHandle.MinRow);
+            int re = Mathf.Min(m_RowEnd - 1, m_Table.SelectionHandle.MaxRow);
+            int cs = Mathf.Max(m_ColStart, m_Table.SelectionHandle.MinCol);
+            int ce = Mathf.Min(m_ColEnd - 1, m_Table.SelectionHandle.MaxCol);
+            if (rs > re || cs > ce)
+            {
+                m_Fill.gameObject.SetActive(false);
+                return;
+            }
+
+            Rect rect = m_Table.GetTableRect(rs, re + 1, cs, ce + 1);
+            Rect region = m_Table.GetTableRect(m_RowStart, m_RowEnd, m_ColStart, m_ColEnd);
+            var fillRt = m_Fill.rectTransform;
+            fillRt.anchoredPosition = new Vector2(rect.x - region.x, region.y - rect.y);
+            fillRt.sizeDelta = rect.size;
+            m_Fill.color = m_Table.SelectionOverlayColor;
+            m_Fill.gameObject.SetActive(true);
+        }
+
+        public void OnPointerDown(PointerEventData eventData)
+        {
+            if (m_Table == null || !m_Table.TryGetCellFromScreenPoint(transform.RectTransform(), eventData.position, eventData.pressEventCamera, true, out int row, out int col))
+                return;
+            m_Dragging = true;
+            m_Table.BeginSelection(row, col);
+            eventData.Use();
+        }
+
+        public void OnDrag(PointerEventData eventData)
+        {
+            if (!m_Dragging || m_Table == null) return;
+            m_Table.UpdateSelectionDrag(transform.RectTransform(), eventData.position, eventData.pressEventCamera);
+            eventData.Use();
+        }
+
+        public void OnPointerUp(PointerEventData eventData)
+        {
+            EndDrag();
+            eventData.Use();
+        }
+
+        public void OnEndDrag(PointerEventData eventData) => EndDrag();
+
+        private void OnDisable() => EndDrag();
+        private void OnDestroy() => EndDrag();
+
+        private void EndDrag()
+        {
+            if (!m_Dragging) return;
+            m_Dragging = false;
+            m_Table?.EndSelection();
+        }
+
+        private void EnsureVisuals()
+        {
+            var input = GetComponent<Image>();
+            input.color = Color.clear;
+            input.raycastTarget = true;
+            if (m_Fill != null) return;
+            var go = new GameObject("_SelectionRect", typeof(RectTransform), typeof(CanvasRenderer), typeof(Image), typeof(Outline));
+            go.hideFlags = HideFlags.DontSave | HideFlags.HideInHierarchy;
+            go.transform.SetParent(transform, false);
+            m_Fill = go.GetComponent<Image>();
+            m_Fill.raycastTarget = false;
+            var outline = go.GetComponent<Outline>();
+            outline.effectColor = new Color(0.2f, 0.55f, 1f, 1f);
+            outline.effectDistance = new Vector2(1f, -1f);
+            var rt = m_Fill.rectTransform;
+            rt.anchorMin = new Vector2(0, 1);
+            rt.anchorMax = new Vector2(0, 1);
+            rt.pivot = new Vector2(0, 1);
+        }
+    }
+}