Merge pull request #1977 from VisActor/feat/support-filterBeforeOverlap-in-label

Feat/support filter before overlap in label

Author: xuefei1313

common/changes/@visactor/vrender-components/feat-support-filterBeforeOverlap-in-label_2025-11-11-08-55.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "comment": "feat: support filterBeforeOverlap in label\n\n",
+      "type": "none",
+      "packageName": "@visactor/vrender-components"
+    }
+  ],
+  "packageName": "@visactor/vrender-components",
+  "email": "[email protected]"
+}

packages/vrender-components/src/label/base.ts

@@ -29,7 +29,8 @@ import {
   isNil,
   isArray,
   isObject,
-  pointInRect
+  pointInRect,
+  isBoolean
 } from '@visactor/vutils';
 import type { PointLocationCfg } from '../core/type';
 import { labelSmartInvert, contrastAccessibilityChecker, smartInvertStrategy } from '../util/label-smartInvert';
@@ -212,17 +213,30 @@ export class LabelBase<T extends BaseLabelAttrs> extends AnimateComponent<T> {
       labels = this._layout(labels);
     }
 
+    const filteredLabels: (IText | IRichText)[] = [];
+    const overlapLabels: (IText | IRichText)[] = labels;
+    if (!isBoolean(overlap) && isFunction(overlap.filterBeforeOverlap)) {
+      const getRelatedGraphic = this.getRelatedGraphic.bind(this);
+      labels.forEach(label => {
+        if (overlap.filterBeforeOverlap(label, getRelatedGraphic, this)) {
+          overlapLabels.push(label);
+        } else {
+          filteredLabels.push(label);
+        }
+      });
+    }
+
     if (isFunction(customOverlapFunc)) {
       labels = customOverlapFunc(
-        labels as Text[],
+        overlapLabels as Text[],
         this.getRelatedGraphic.bind(this),
         this._isCollectionBase ? (d: LabelItem) => this._idToPoint.get(d.id) : null,
         this
-      );
+      ).concat(filteredLabels);
     } else {
       // 防重叠逻辑
       if (overlap !== false) {
-        labels = this._overlapping(labels);
+        labels = this._overlapping(overlapLabels).concat(filteredLabels);
       }
     }
 

packages/vrender-components/src/label/type.ts

@@ -152,6 +152,19 @@ export interface BaseLabelAttrs extends IGroupGraphicAttribute {
     getRelatedPoint: ((data: LabelItem) => IPointLike) | null | undefined,
     labelComponent: IGroup
   ) => void;
+
+  /**
+   * 防重叠计算前的回调函数
+   * 返回true的标签会被计算防重叠
+   * 返回false的标签会被直接跳过防重叠计算
+   * @since 1.19.16
+   */
+  filterBeforeOverlap?: (
+    label: IText | IRichText,
+    getRelatedGraphic: (data: LabelItem) => IGraphic,
+    labelComponent: IGroup
+  ) => boolean;
+
   /**
    * 关闭交互效果
    * @default false
@@ -225,6 +238,18 @@ export interface OverlapAttrs {
    * @returns number 数值越大，权重越高。权重越高的标签越优先被布局。
    */
   priority?: (labelItem: LabelItem) => number;
+
+  /**
+   * 防重叠计算前的回调函数
+   * 返回true的标签会被计算防重叠
+   * 返回false的标签会被直接跳过防重叠计算
+   * @since 1.0.24
+   */
+  filterBeforeOverlap?: (
+    label: IText | IRichText,
+    getRelatedGraphic: (data: LabelItem) => IGraphic,
+    labelComponent: IGroup
+  ) => boolean;
 }
 
 export interface SmartInvertAttrs {