From 632e106a06f85d834e404f73f317b187c7531f92 Mon Sep 17 00:00:00 2001
From: Aleksandr Lesnenko <alxnddr@gmail.com>
Date: Fri, 29 Sep 2023 19:21:02 -0300
Subject: [PATCH] support brush selection on line series

---
 src/chart/line/LineSeries.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/chart/line/LineSeries.ts b/src/chart/line/LineSeries.ts
index 9faf5c5175..85e7b173aa 100644
--- a/src/chart/line/LineSeries.ts
+++ b/src/chart/line/LineSeries.ts
@@ -42,6 +42,7 @@ import type Polar from '../../coord/polar/Polar';
 import {createSymbol, ECSymbol} from '../../util/symbol';
 import {Group} from '../../util/graphic';
 import {LegendIconParams} from '../../component/legend/LegendModel';
+import type { BrushCommonSelectorsForSeries } from '../../component/brush/selector';
 
 type LineDataValue = OptionDataValue | OptionDataValue[];
 
@@ -216,6 +217,15 @@ class LineSeriesModel extends SeriesModel<LineSeriesOption> {
         triggerLineEvent: false
     };
 
+    brushSelector(dataIndex: number, data: SeriesData, selectors: BrushCommonSelectorsForSeries): boolean {
+        const points = data.getLayout('points');
+        const pointOffset = dataIndex * 2;
+        const x = points[pointOffset];
+        const y = points[pointOffset + 1];
+
+        return selectors.point([x, y]);
+    }
+
     getLegendIcon(opt: LegendIconParams): ECSymbol | Group {
         const group = new Group();