[Feature] markArea中label的dx和dy支持函数

Description

Contributor guide

Tech stack

typescriptjavascript

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.

1-2 days

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

blocked

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

mostly clear

Prerequisites

TypeScriptVChart markArea componentGitHub workflow

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

40

Research direction

Examine the VChart source code, specifically the markArea label rendering logic (likely in packages/vchart/src/component/mark area/). Look for how dx and dy are currently used; they are likely numeric values. The task is to modify them to accept functions that return numbers. Check other similar properties in VChart that already support function types as a pattern. Since the issue has two assignees, check their progress and coordinate contributions. There are no linked PRs yet.