增加Axis的onLabelClick回调事件

Documentation~/zh/changelog.md

@@ -80,6 +80,7 @@ slug: /changelog
 
 ## master
 
+* (2025.03.27) 增加`Axis`的`onLabelClick`回调事件
 * (2025.03.26) 增加`Animation`的`Exchange`排序交换动画
 * (2025.03.22) 增加`Comment`的`layer`设置层级
 * (2025.03.21) 优化`Comment`的坐标刷新

Runtime/Component/Axis/Axis.cs

@@ -115,6 +115,13 @@ namespace XCharts.Runtime
 
         public AxisContext context = new AxisContext();
 
+        private Action<Vector3, int, string> m_OnLabelClick;
+        /// <summary>
+        /// Callback function when click on the label. Parameters: clickPos, labelIndex, labelName.
+        /// ||点击文本标签回调函数。参数：clickPos, labelIndex, labelName。
+        /// </summary>
+        [Since("v3.15.0")]
+        public Action<Vector3, int, string> onLabelClick { internal get { return m_OnLabelClick; } set { m_OnLabelClick = value; } }
         /// <summary>
         /// Whether to show axis.
         /// ||是否显示坐标轴。

Runtime/Component/Axis/AxisHandler.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using UnityEngine;
+using UnityEngine.EventSystems;
 using UnityEngine.UI;
 using XCharts.Runtime;
 using XUGL;
@@ -32,6 +33,33 @@ namespace XCharts
 
         protected virtual Orient orient { get; set; }
 
+        public override void OnPointerClick(PointerEventData eventData)
+        {
+            if (component.onLabelClick == null) return;
+            var labelObjects = component.context.labelObjectList;
+            for (int i = 0; i < labelObjects.Count; i++)
+            {
+                var label = labelObjects[i];
+                if (label == null) continue;
+                if (label.InRect(chart.pointerPos))
+                {
+                    component.onLabelClick.Invoke(chart.pointerPos, i, label.text.text.text);
+                    break;
+                }
+            }
+        }
+
+        // public override void DrawTop(VertexHelper vh)
+        // {
+        //     var color = Color.red;
+        //     color.a = 0.5f;
+        //     foreach (var label in component.context.labelObjectList)
+        //     {
+        //         if (label == null) continue;
+        //         UGL.DrawRectangle(vh, label.rect, color);
+        //     }
+        // }
+
         protected virtual void UpdatePointerValue(Axis axis)
         {
             var grid = chart.GetChartComponent<GridCoord>(axis.gridIndex);

Runtime/Internal/Object/ChartLabel.cs

@@ -53,6 +53,11 @@ namespace XCharts.Runtime
             }
         }
 
+        public bool InRect(Vector2 local)
+        {
+            return rect.Contains(local);
+        }
+
         protected override void Awake()
         {
             raycastTarget = false;
@@ -183,6 +188,7 @@ namespace XCharts.Runtime
         public void SetPosition(Vector3 position)
         {
             transform.localPosition = position;
+            UpdateRect();
         }
 
         public void SetRectPosition(Vector3 position)
@@ -264,6 +270,45 @@ namespace XCharts.Runtime
                 m_Width = sizeDelta.x + m_PaddingLeft + m_PaddingRight;
                 m_Height = sizeDelta.y + m_PaddingTop + m_PaddingBottom;
                 objectRect.sizeDelta = new Vector2(m_Width, m_Height);
+                UpdateRect();
+            }
+        }
+
+        private void UpdateRect()
+        {
+            if (m_TextRect == null) return;
+            switch (text.alignment)
+            {
+                case TextAnchor.LowerLeft:
+                    rect = new Rect(transform.localPosition.x, transform.localPosition.y, m_Width, m_Height);
+                    break;
+                case TextAnchor.UpperLeft:
+                    rect = new Rect(transform.localPosition.x, transform.localPosition.y - m_Height, m_Width, m_Height);
+                    break;
+                case TextAnchor.MiddleLeft:
+                    rect = new Rect(transform.localPosition.x, transform.localPosition.y - m_Height / 2, m_Width, m_Height);
+                    break;
+                case TextAnchor.LowerRight:
+                    rect = new Rect(transform.localPosition.x - m_Width, transform.localPosition.y, m_Width, m_Height);
+                    break;
+                case TextAnchor.UpperRight:
+                    rect = new Rect(transform.localPosition.x - m_Width, transform.localPosition.y - m_Height, m_Width, m_Height);
+                    break;
+                case TextAnchor.MiddleRight:
+                    rect = new Rect(transform.localPosition.x - m_Width, transform.localPosition.y - m_Height / 2, m_Width, m_Height);
+                    break;
+                case TextAnchor.LowerCenter:
+                    rect = new Rect(transform.localPosition.x - m_Width / 2, transform.localPosition.y, m_Width, m_Height);
+                    break;
+                case TextAnchor.UpperCenter:
+                    rect = new Rect(transform.localPosition.x - m_Width / 2, transform.localPosition.y - m_Height, m_Width, m_Height);
+                    break;
+                case TextAnchor.MiddleCenter:
+                    rect = new Rect(transform.localPosition.x - m_Width / 2, transform.localPosition.y - m_Height / 2, m_Width, m_Height);
+                    break;
+                default:
+                    rect = new Rect(transform.localPosition.x - m_Width / 2, transform.localPosition.y - m_Height / 2, m_Width, m_Height);
+                    break;
             }
         }