flutter_scatter 0.1.0

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flutter_scatter #

A widget that displays a collection of dispersed and non-overlapping children.

Pub Donate

Can be used to create word clouds: Word Cloud

Features #

  • Built-in delegates (Spirals, Align, Ellipse).
  • Allow you to specify how to align chlidren.

Getting started #

In the pubspec.yaml of your flutter project, add the following dependency: The latest version is Pub

  flutter_scatter: ^latest_version

In your library add the following import:

import 'package:flutter_scatter/flutter_scatter.dart';

For help getting started with Flutter, view the online documentation.

Widgets #

You can simply create a Scatter by providing a delegate and a list of widgets.

The delegate is responsible for computing positions. For example if you want to position your widgets on a circle, you will use the EllipseScatterDelegate:

return Center(
    child: Scatter(
    delegate: EllipseScatterDelegate(
        a: 185.0,
        b: 185.0,
        step: 1.0 / count,
    children: widgets,


It may be useful to choose how children are aligned with the computed positions. By default, the center of the widgets will be placed on the positions generated by the delegate. If you want to be left aligned, you will change the alignment argument of the Scatter to be Alignment.topLeft.

By default, the Scatter will not try to fill gaps (for performance reasons). You can override this behavior by setting the fillGaps argument to true.

For example this is what the above word cloud would look if the fillGaps argument would be set to false: fillGaps to false

Delegates #

Scatter has built-in delegates which can be highly parameterized:

Spirals #

  • ArchimedeanSpiralScatterDelegate
  • FermatSpiralScatterDelegate
  • LogarithmicSpiralScatterDelegate


Alignments #

  • AlignScatterDelegate


Ellipses #

  • EllipseScatterDelegate


Examples #

You can find more examples in this app.

Changelog #

Please see the Changelog page to know what's recently changed.

Contributions #

Feel free to contribute to this project.

If you find a bug or want a feature, but don't know how to fix/implement it, please fill an issue.
If you fixed a bug or implemented a new feature, please send a pull request.

0.1.0 #

  • Initial Open Source release.


example #

Example app for the scatter widget

Getting Started #

For help getting started with Flutter, view our online documentation.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  flutter_scatter: ^0.1.0

2. Install it

You can install packages from the command line:

with Flutter:

$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:flutter_scatter/flutter_scatter.dart';
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Learn more about scoring.

We analyzed this package on Jan 25, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.7.0
  • pana: 0.13.4
  • Flutter: 1.12.13+hotfix.5

Maintenance suggestions

Package is getting outdated. (-20.27 points)

The package was last published 62 weeks ago.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.68.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11 1.14.12
meta 1.1.8
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies