A SwiftUI-like framework for creating cross-platform apps in Swift. It uses SwiftGtk as its backend.

This project is still very much a work-in-progress, proper documentation and tutorials will be created once the project has matured a bit, because otherwise I have to spend too much time keeping the documentation up-to-date.

NOTE: SwiftGtkUI does not attempt to replicate SwiftUI's API because SwiftGtkUI is intended to be simpler than SwiftUI. However, many concepts from SwiftUI should still be transferrable.

Here's a simple example app demonstrate how easy it is to get started with SwiftGtkUI:

import SwiftGtkUI

class CounterState: AppState {
    @Observed var count = 0
}

@main
struct CounterApp: App {
    let identifier = "dev.stackotter.CounterApp"
    
    let state = CounterState()
    
    var body: some ViewContent {
        HStack {
            Button("-") { state.count -= 1 }
            Text("Count: \(state.count)")
            Button("+") { state.count += 1 }
        }
    }
}

To run this example, run these commands:

git clone https://github.com/stackotter/SwiftGtkUI
cd SwiftGtkUI
swift run CounterExample

To see all of the examples, run these commands:

swift run CounterExample
swift run RandomNumberGeneratorExample

1. Swift 5.5 or higher
2. Gtk+ 3
3. clang (only required on Linux)

Install Gtk+ 3 using homebrew or the package manager of your choice.

brew install gtk+3

Install Gtk+3 and Clang using apt or the package manager of your choice.

sudo apt install libgtk-3-dev clang

Just add SwiftGtkUI as a dependency in your Package.swift. See below for an example package manifest:

import PackageDescription

let package = Package(
  name: "Example",
  dependencies: [
    .package(url: "https://github.com/stackotter/SwiftGtkUI", .branch("main"))
  ],
  targets: [
    .executableTarget(name: "Example", dependencies: ["SwiftGtkUI"])
  ]
)