[Feat]: 柱状图hover到空白区域怎么不显示tooltip

Description

Contributor guide

Tech stack

javascript

Domain

frontend

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

fresh

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

mostly clear

Prerequisites

G2 tooltip APIJavaScriptEvent handling

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

60

Research direction

Study the tooltip interaction module in G2's source code, particularly files like 'src/interaction/action/tooltip.ts' or 'src/component/tooltip.ts'. Determine the event handler that triggers tooltip on hover and identify how it distinguishes between hovering over a chart element versus blank space. Consider adding a filter to only show tooltip when hovering over bar marks, or make it configurable. Review existing tooltip configuration options for clues.