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 like API.

The main goals of OrbTk are speed, ease of use, and being cross platform.

Features:

• Modern lightweight API
• Cross platform
• Modular crates
• Based on Entity Component System library DCES
• Flexible event system
• Integrated widget library
• Custom widgets
• Theming
• Integrated debugging tools

Platforms

• Redox OS (native | cargo-node)
• Linux (native | cargo-node)
• macOS (native | cargo-node)
• Windows (native | cargo-node)
• openBSD (not tested, but should work)
• Web (cargo-node)
• Android (native planned after 0.3 | cargo-node)
• iOS (native planned after 0.3 | cargo-node planned after 0.3)
• Ubuntu Touch (native planned after 0.3 | cargo-node planned for 0.3)

Planned features

• Conformable use of async
• More default widgets
• More examples
• Book
• Animations
• Split application in modules
• Theme update
• 3D context
• More integrated debugging tools

Usage

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

orbtk = "0.3.1-alpha1"

To use the latest development version of OrbTk, just add the dependency line to your Cargo.toml file:

orbtk = { git = "https://github.com/redox-os/orbtk.git", branch = "develop" }

Minimal Example

use orbtk::prelude::*;

fn main() {
      Application::new()
        .window(|ctx| {
            Window::create()
                .title("OrbTk - minimal example")
                .position((100.0, 100.0))
                .size(420.0, 730.0)
                .child(TextBlock::create().text("OrbTk").build(ctx))
                .build(ctx)
        })
        .run();
}

Run Examples

You can find examples in the examples/ directory.

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

cargo run --example widgets --release

OrbTk has also an integrated debug tools. If you want to show the bounds of all widgets (also non visual widgets) and want to see a debug print of the whole widget tree you could run the examples as follows:

cargo run --example widgets --release --features debug

Run Examples with cargo-node

To run the examples on as browser, electron or cordova app you have to install

cargo install -f cargo-node

Before you could use cargo node you have to install npm version 6.9.0. It is included in the Node.js version 10.16.3. You could download it from https://nodejs.org/dist/v10.16.3/.

Rust's cargo is presumed. All other dependencies of cargo node will be installed automatic.

Start examples

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

• Run as browser app:

cargo node run --target browser --example widgets

• Run as electron app:

cargo node run --target electron --example widgets

• Run as cordova app on android:

cargo node run --target android --example widgets

Build and run documentation

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

cargo doc --no-deps --open

Sub Crates

• api: base api elements of OrbTk e.g. widget and application parts
• css-engine: parse and read values from a css file
• proc-macros: procedural helper macros
• render: cross platform 2D/3D render library
• shell: cross platform window and event handling
• theme: OrbTks default theme (light and dark)
• tree: tree structure based on DCES
• utils: helper structs and traits
• widgets: base widget library

Inspirations

• Flutter
• React
• Yew

Showcases

• Space Editor: 2D Tile Map Editor compatible with OrbGame
• OrbCalculator: Calculator based on OrbTk

Contribution

If you want to help bring OrbTk further or you have feedback check our issues https://github.com/redox-os/orbtk/issues. You could also discuss with us about OrbTk on the Redox chat https://redox-os.org/community/ (join the orbital channel).

License

Licensed under MIT license (LICENSE).