From 03697d03990957a7ca744845f5550b77ef00b133 Mon Sep 17 00:00:00 2001
From: Alexey Gryzin <62965405+feelsbadmans@users.noreply.github.com>
Date: Thu, 19 Oct 2023 10:19:55 +0300
Subject: [PATCH] feat: added options for custom tooltip tracking fn (#171)

Co-authored-by: Alexey Gryzin <angryzin@yandex-team.ru>
---
 src/YagrCore/plugins/tooltip/tooltip.ts |  9 ++++++++-
 src/YagrCore/plugins/tooltip/types.ts   | 13 ++++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/YagrCore/plugins/tooltip/tooltip.ts b/src/YagrCore/plugins/tooltip/tooltip.ts
index 6045452..cc67920 100644
--- a/src/YagrCore/plugins/tooltip/tooltip.ts
+++ b/src/YagrCore/plugins/tooltip/tooltip.ts
@@ -409,7 +409,14 @@ class YagrTooltip {
                 } else if (tracking === 'sticky') {
                     activeIndex = findSticky(section, cursorValue);
                 } else if (typeof tracking === 'function') {
-                    activeIndex = tracking(section, cursorValue);
+                    activeIndex = tracking(section, cursorValue, {
+                        x: u.posToVal(left, 'x'),
+                        y: u.posToVal(top, scale),
+                        idx,
+                        scale,
+                        series: this.yagr.series,
+                        interpolation: this.interpolation,
+                    });
                 }
 
                 if (activeIndex !== null) {
diff --git a/src/YagrCore/plugins/tooltip/types.ts b/src/YagrCore/plugins/tooltip/types.ts
index 412f1be..e4f5969 100644
--- a/src/YagrCore/plugins/tooltip/types.ts
+++ b/src/YagrCore/plugins/tooltip/types.ts
@@ -1,4 +1,15 @@
+import {AlignedData} from 'uplot';
 import Yagr from '../../index';
+import {ProcessingInterpolation} from 'src/types';
+
+type CustomTrackingFunctionOptions = {
+    x: number;
+    y: number;
+    idx: number;
+    scale: string;
+    series: AlignedData;
+    interpolation?: ProcessingInterpolation;
+};
 
 export type TrackingOptions =
     /** Tracks serie only if mouse hovered on series' area */
@@ -6,7 +17,7 @@ export type TrackingOptions =
     /** Tracks mouse to closest line */
     | 'sticky'
     /** Custom tracking function */
-    | ((s: TooltipSection, y: number) => number | null);
+    | ((s: TooltipSection, y: number, options: CustomTrackingFunctionOptions) => number | null);
 export interface TooltipRenderOpts {
     /** Tooltip option */
     options: TooltipOptions;