添加一个表格组件，原理上贴近现代表格系统，理论上可以应对超大型表格以及离散数据集合。
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#if UNITY_EDITOR
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using UnityEditor;
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using UnityEngine;
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using XericUI.XTable.Rendering.Component;
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namespace XericUIEditor.XTable
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{
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/// <summary>
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/// 场景视图表格编辑覆盖工具——选中表格组件后，在世界编辑器视口中显示网格线和编辑辅助 UI。
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/// 包含合并工具、拖拽引用工具、单元格坐标提示等。
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/// </summary>
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public static class XTableEditorOverlay
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{
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/// <summary>是否启用覆盖层（可通过菜单开关）</summary>
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private static bool s_Enabled = true;
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private const string MENU_PATH = "Xeric UI/表格编辑器覆盖层";
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[MenuItem(MENU_PATH, false, 200)]
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private static void ToggleOverlay()
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{
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s_Enabled = !s_Enabled;
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Menu.SetChecked(MENU_PATH, s_Enabled);
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SceneView.RepaintAll();
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}
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[MenuItem(MENU_PATH, true)]
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private static bool ToggleOverlayValidate()
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{
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Menu.SetChecked(MENU_PATH, s_Enabled);
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return true;
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}
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/// <summary>
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/// 在 Scene View 中绘制表格编辑辅助线。
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/// 调用时机：挂到 SceneView.duringSceneGui 事件上。
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/// 示例：SceneView.duringSceneGui += OnSceneGUI;
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/// </summary>
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public static void OnSceneGUI(SceneView sceneView)
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{
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if (!s_Enabled) return;
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// 获取当前选中的表格组件
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GameObject selected = Selection.activeGameObject;
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if (selected == null) return;
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XericUIActionTable table = selected.GetComponent<XericUIActionTable>();
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if (table == null) return;
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RectTransform rect = table.GetComponent<RectTransform>();
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if (rect == null) return;
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DrawGridOverlay(table, rect);
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DrawCellInfo(table, rect, sceneView);
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}
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/// <summary>绘制网格线</summary>
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private static void DrawGridOverlay(XericUIActionTable table, RectTransform rect)
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{
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float[] rowHeights = table.RowHeights;
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float[] colWidths = table.ColWidths;
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if (rowHeights == null || colWidths == null) return;
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Vector3[] corners = new Vector3[4];
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rect.GetWorldCorners(corners);
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Vector3 topLeft = corners[1];
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float totalWidth = rect.rect.width;
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float totalHeight = rect.rect.height;
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Handles.color = new Color(0.5f, 0.5f, 0.5f, 0.3f);
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// 绘制行分割线
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float accumulatedY = 0f;
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for (int r = 0; r < rowHeights.Length && accumulatedY < totalHeight; r++)
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{
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float y = topLeft.y - accumulatedY - rowHeights[r];
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Vector3 start = new Vector3(topLeft.x, y, topLeft.z);
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Vector3 end = new Vector3(topLeft.x + Mathf.Min(totalWidth, 500f), y, topLeft.z);
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Handles.DrawLine(start, end);
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accumulatedY += rowHeights[r];
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}
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// 绘制列分割线
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float accumulatedX = 0f;
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for (int c = 0; c < colWidths.Length && accumulatedX < totalWidth; c++)
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{
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float x = topLeft.x + accumulatedX + colWidths[c];
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Vector3 start = new Vector3(x, topLeft.y, topLeft.z);
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Vector3 end = new Vector3(x, topLeft.y - Mathf.Min(totalHeight, 500f), topLeft.z);
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Handles.DrawLine(start, end);
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accumulatedX += colWidths[c];
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}
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}
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/// <summary>绘制单元格坐标提示</summary>
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private static void DrawCellInfo(XericUIActionTable table, RectTransform rect, SceneView sceneView)
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{
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int selRow = table.SelectedRow;
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int selCol = table.SelectedCol;
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if (selRow < 0 || selCol < 0) return;
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float[] rowHeights = table.RowHeights;
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float[] colWidths = table.ColWidths;
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if (rowHeights == null || colWidths == null) return;
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// 计算选中单元格的世界位置
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float cellX = 0f;
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for (int c = 0; c < selCol && c < colWidths.Length; c++)
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cellX += colWidths[c];
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float cellY = 0f;
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for (int r = 0; r < selRow && r < rowHeights.Length; r++)
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cellY += rowHeights[r];
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Vector3[] corners = new Vector3[4];
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rect.GetWorldCorners(corners);
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Vector3 topLeft = corners[1];
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Vector3 cellCenter = new Vector3(
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topLeft.x + cellX + (selCol < colWidths.Length ? colWidths[selCol] * 0.5f : 0),
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topLeft.y - cellY - (selRow < rowHeights.Length ? rowHeights[selRow] * 0.5f : 0),
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topLeft.z);
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// 绘制选中高亮框
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Handles.color = new Color(0.2f, 0.6f, 1f, 0.5f);
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float cellW = selCol < colWidths.Length ? colWidths[selCol] : 50f;
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float cellH = selRow < rowHeights.Length ? rowHeights[selRow] : 30f;
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Vector3 cellTL = new Vector3(cellCenter.x - cellW * 0.5f, cellCenter.y + cellH * 0.5f, cellCenter.z);
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Vector3 cellTR = new Vector3(cellCenter.x + cellW * 0.5f, cellCenter.y + cellH * 0.5f, cellCenter.z);
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Vector3 cellBR = new Vector3(cellCenter.x + cellW * 0.5f, cellCenter.y - cellH * 0.5f, cellCenter.z);
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Vector3 cellBL = new Vector3(cellCenter.x - cellW * 0.5f, cellCenter.y - cellH * 0.5f, cellCenter.z);
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Handles.DrawSolidRectangleWithOutline(
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new Vector3[] { cellTL, cellTR, cellBR, cellBL },
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new Color(0.2f, 0.6f, 1f, 0.2f),
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new Color(0.2f, 0.6f, 1f, 0.8f));
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// 显示单元格坐标标签
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Handles.Label(cellCenter + Vector3.up * 10f,
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$"({selRow}, {selCol})",
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new GUIStyle(EditorStyles.label)
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{
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normal = { textColor = Color.white },
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fontStyle = FontStyle.Bold
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});
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// 工具栏按钮（在 Scene View 顶部绘制）
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Handles.BeginGUI();
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GUILayout.BeginArea(new Rect(10, 10, 200, 80));
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GUILayout.BeginVertical("表格编辑工具", GUI.skin.window);
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if (GUILayout.Button("合并选区"))
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{
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Debug.Log($"[XTable] 合并起始于 ({selRow}, {selCol})");
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}
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if (GUILayout.Button("取消合并"))
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{
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Debug.Log($"[XTable] 取消合并 ({selRow}, {selCol})");
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}
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GUILayout.EndVertical();
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GUILayout.EndArea();
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Handles.EndGUI();
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}
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}
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}
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#endif
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