imaNNeo/fl_chart

Applying styling to to BarChartGroupData

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#494 opened on Nov 11, 2020

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Bar Chartenhancementgood first issue

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Description

Is your feature request relasted to a problem? Please describe. I'm showing data based on months (i.e x axis is months, y axis is value) - I've got three rods per month, and I have various logic to determine the color. I'm looking at options on how to highlight a specific month (e.g the current month). This is only for aesthetic purposes.

Describe the solution you'd like Since my implementation is using colors, my only option appears to be the rod width to highlight rods. It would be great if there were additional options available and a couple of options I could think of :

  • Applying a border to BarChartGroupData (e.g dotted, dashed, solid)
  • Applying an elevation to the rods to pop it out

Describe alternatives you've considered Alternatives I've tried is to alter the color codes, adjusting the rod sizes (rod width)

Contributor guide

Research direction
Locate the BarChartGroupData class and its rendering in fl chart, then implement border and elevation properties and update the painter to render them.
Tech stack
dart
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.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
FlutterDart
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60