Vortex Demo

The Vortex Demo app showcases Vortex-Android, an open-source library for building user-customizable Android apps with Jetpack Compose. It's powered by Layers, a C++ theme framework that separates UI styling from application logic using declarative JSON files.

Use this app to:

• Preview the Vortex UI - Explore the tab-based interface, settings menu, and built-in widgets that Vortex-Android provides out of the box.

• Switch themes instantly - Toggle between the bundled Dark and Light themes to see how the UI updates in real time.

• Test your own themes - Load custom Layers themes from your device storage.

• Explore the style system - See how Vortex surfaces resolve styles from JSON definitions, with support for inheritance, theme linking, and state-based variants.

What is Vortex?

Vortex is a UI library that integrates the Layers theme framework with platform-native UI frameworks — Qt on desktop and Jetpack Compose on Android. It provides a consistent, theme-driven UI experience across platforms.

What is Layers?

Layers is a C++ theme framework that gives developers and users control over application appearance through JSON-based themes and styles. Styles define UI element properties like colors, borders, corner radii, and margins, and link to theme attributes, so switching a theme re-skins the entire app without any code changes.

Key features of the Vortex-Android library:

• JSON-based styles - Define UI appearance separate from app logic

• Runtime theme switching - Change the look of your entire app instantly

• Style inheritance - Build complex styles from simple base definitions

• Theme linking - Styles reference theme variables for automatic updates

• State-based styling - Support for Active, Selected, and other visual states

• External theme loading - Users can load themes from device storage

• Built-in settings UI - Ready-made theme picker and style management screens

The Vortex-Android library is licensed under the MIT License.

This demo is licensed under the GPL 3.0 License.

Learn more:

• Vortex-Android: https://codeberg.org/HuntrSoftware/vortex-android

• Vortex-Desktop: https://codeberg.org/HuntrSoftware/vortex-desktop

• Layers: https://codeberg.org/HuntrSoftware/Layers

• Website: https://huntrsoftware.com