thema

thema reduces the boilerplate code required to create ThemeExtension classes with macros.

Caution

This package is experimental because the Dart macro system is currently under development.
DO NOT USE on production codes.

thema_demo.mp4

thema	Traditional

Contents

• Requirements
• Setup
• Usage
• Feature requests
• Bug reports

Requirements

• Dart dev channel
• Flutter master channel

For more information, refer to the Macros documentation.

Setup

1. Edit SDK constraints in pubspec.yaml:

environment:
  sdk: ">=3.6.0-0 <4.0.0"

2. Add the following dependencies to your pubspec.yaml:

dependencies:
  thema: <version>

3. Enable the experiment in analysis_options.yaml:

analyzer:
  enable-experiment:
    - macros
    - enhanced-parts

Usage

Define a class with the @Thema annotation:

@Thema()
class ColorThemeExt {
  final Color primaryColor;
  final Color secondaryColor;
  final Color accentColor;
}

thema supports custom theme classes:

class GradientColor {
  // You should implement the `lerp` static method.
  static GradientColor? lerp(GradientColor? a, GradientColor? b, double t) {
    // ...
  }
}

@Thema()
class GradientColorThemeExt {
  final GradientColor primaryGradient;
  final GradientColor secondaryGradient;
  final GradientColor accentGradient;
}

thema also supports nested ThemeExtension classes:

@Thema()
class AppThemeExt {
  final ColorThemeExt color;
  final GradientColorThemeExt gradientColor;
}

Feature requests

If you have any feature requests, please create an issue from this template.

Bug reports

If you find any bugs, please create an issue from this template.

Contributing

Welcome your contributions!! Please read CONTRIBUTING docs before submitting your PR.