OrbTk 0.3.0 is under heavy development and it's not compatible to earlier releases.

The Orbital Widget Toolkit is a multi platform (G)UI toolkit for building scalable user interfaces with the programming language Rust. It's based on the Entity Component System Pattern and provides a functional-reactive API.

The main goals of OrbTk are fast performance, easy to use and cross platform.

Features:

• Modern Flutter, React, Redux like API
• Uses the Entity Component System library DCES for widget and properties handling
• Updating instead of rebuilding sub-trees
• Flexible event system
• Widget state management
• Cross platform: Redox OS, Linux, macOS, Windows
• CSS theming

Usage

To include OrbTk in your project, just add the dependency line to your Cargo.toml file:

orbtk = "0.2.27"

To use OrbTk 0.3, just add the dependency line to your Cargo.toml file:

orbtk = { git = "https://gitlab.redox-os.org/redox-os/orbtk.git" }

However you also need to have the SDL2 libraries installed on your system. The best way to do this is documented by the SDL2 crate.

Minimal Example

use orbtk::*;

fn main() {
    let mut application = Application::default();
    application
        .create_window()
        .bounds(Bounds::new(100.0, 100.0, 420.0, 730.0))
        .title("OrbTk - minimal example")
        .root(TextBlock::create().text("OrbTk").into())
        .debug_flag(false)
        .build();
    application.run();
}

Additional Examples

You find the examples in the examples/ directory.

You can start the widgets example by executing the following command:

cargo run --example widgets --release

Build and run documentation

You can build and run the latest documentation y executing the following command:

cargo doc --no-deps --open

Planned features

• Style guide
• More default widgets
• More examples
• Book
• Animations
• Exchange views / widgets / screens on runtime
• Split application in modules
• Theme update
• Support for Android, iOS and WebAssembly
• Vulkan / OpenGL Support

Dependencies

• OrbClient: window creation, drawing, window events
• OrbFont: font rendering
• OrbImage: image loading
• DCES: Entity Component System
• rust-cssparser: CSS parsing

Inspirations

• Flutter
• React
• Yew