imaNNeo / imaNNeo/fl_chart

Add spot drag function for LineChart & spot custom indicator widget

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Dominant language
Dart
Stars
7.6k
Forks
2k
Avg merge
9d 1h
Merged PRs (30d)
2

Description

Hello!
First of all, thank you and all contributors for this awesome package,

I want to achieve the following effect:eg
![game-peq-chart](https://github.com/user-attachments/assets/901589d2-bbcb-4e9e-b15b-157668b6bc89)
This picture is a screenshot of Steel Series GG。

I referred to some issue:eg
https://github.com/imaNNeo/fl_chart/issues/1508
https://github.com/imaNNeo/fl_chart/issues/1420
https://github.com/imaNNeo/fl_chart/pull/1428

But it didn't solve my problem, can you give me some useful advice?

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the LineChart interaction and custom indicator APIs, then read issues #1508 and #1420 and PR #1428 for existing approaches. Done requires an agreed scope for dragging individual spots and displaying the custom indicator behavior shown in the referenced screenshot, with a reproducible example or test.

Written by the indexing model from the issue text.

Assessment

Tech stack
dart, flutter
Domain
data-visualization, frontend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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