tauri-apps/wry

#[derive(Default)]
struct App {
  window: Option<Window>,
  webview: Option<wry::WebView>,
}

impl ApplicationHandler for App {
  fn resumed(&mut self, event_loop: &ActiveEventLoop) {
    let window = event_loop.create_window(Window::default_attributes()).unwrap();
    let webview = WebViewBuilder::new()
      .with_url("https://tauri.app")
      .build(&window)
      .unwrap();

    self.window = Some(window);
    self.webview = Some(webview);
  }

  fn window_event(&mut self, _event_loop: &ActiveEventLoop, _window_id: WindowId, event: WindowEvent) {}
}

let event_loop = EventLoop::new().unwrap();
let mut app = App::default();
event_loop.run_app(&mut app).unwrap();

let event_loop = EventLoop::new();
let window = WindowBuilder::new().build(&event_loop).unwrap();

let builder = WebViewBuilder::new().with_url("https://tauri.app");

#[cfg(not(target_os = "linux"))]
let webview = builder.build(&window).unwrap();
#[cfg(target_os = "linux")]
let webview = builder.build_gtk(window.gtk_window()).unwrap();

#[derive(Default)]
struct App {
  window: Option<Window>,
  webview: Option<wry::WebView>,
}

impl ApplicationHandler for App {
  fn resumed(&mut self, event_loop: &ActiveEventLoop) {
    let window = event_loop.create_window(Window::default_attributes()).unwrap();
    let webview = WebViewBuilder::new()
      .with_url("https://tauri.app")
      .with_bounds(Rect {
        position: LogicalPosition::new(100, 100).into(),
        size: LogicalSize::new(200, 200).into(),
      })
      .build_as_child(&window)
      .unwrap();

    self.window = Some(window);
    self.webview = Some(webview);
  }

  fn window_event(&mut self, _event_loop: &ActiveEventLoop, _window_id: WindowId, event: WindowEvent) {}
}

let event_loop = EventLoop::new().unwrap();
let mut app = App::default();
event_loop.run_app(&mut app).unwrap();

let event_loop = EventLoop::new();
let window = WindowBuilder::new().build(&event_loop).unwrap();

let builder = WebViewBuilder::new()
  .with_url("https://tauri.app")
  .with_bounds(Rect {
    position: LogicalPosition::new(100, 100).into(),
    size: LogicalSize::new(200, 200).into(),
  });

#[cfg(not(target_os = "linux"))]
let webview = builder.build_as_child(&window).unwrap();
#[cfg(target_os = "linux")]
let webview = {
  let vbox = window.default_vbox().unwrap(); // tao adds a gtk::Box by default
  let fixed = gtk::Fixed::new();
  fixed.show_all();
  vbox.pack_start(&fixed, true, true, 0);
  builder.build_gtk(&fixed).unwrap()
};

#[derive(Default)]
struct App {
  webview_window: Option<(Window, WebView)>,
}

impl ApplicationHandler for App {
  fn resumed(&mut self, event_loop: &ActiveEventLoop) {
    let window = event_loop.create_window(Window::default_attributes()).unwrap();
    let webview = WebViewBuilder::new()
      .with_url("https://tauri.app")
      .build(&window)
      .unwrap();

    self.webview_window = Some((window, webview));
  }

  fn window_event(&mut self, _event_loop: &ActiveEventLoop, _window_id: WindowId, event: WindowEvent) {}

  // Advance GTK event loop <!----- IMPORTANT
  fn about_to_wait(&mut self, _event_loop: &ActiveEventLoop) {
    #[cfg(target_os = "linux")]
    while gtk::events_pending() {
      gtk::main_iteration_do(false);
    }
  }
}

let event_loop = EventLoop::new().unwrap();
let mut app = App::default();
event_loop.run_app(&mut app).unwrap();

sudo pacman -S webkit2gtk-4.1

sudo apt install libwebkit2gtk-4.1-dev

sudo dnf install gtk3-devel webkit2gtk4.1-devel

# shell.nix

let
   # Unstable Channel | Rolling Release
   pkgs = import (fetchTarball("channel:nixpkgs-unstable")) { };
   packages = with pkgs; [
     pkg-config
     webkitgtk_4_1
   ];
 in
 pkgs.mkShell {
   buildInputs = packages;
 }

nix-shell shell.nix

;; manifest.scm

(specifications->manifest
  '("pkg-config"                ; Helper tool used when compiling
    "webkitgtk"                 ; Web content engine fot GTK+
 ))

guix shell -m manifest.scm

RUSTFLAGS="-l framework=WebKit" cargo build --target=x86_64-apple-darwin --release

#[cfg(target_os = "android")]
{
  tao::android_binding!(
      com_example,
      wry_app,
      WryActivity,
      wry::android_setup, // pass the wry::android_setup function to tao which will be invoked when the event loop is created
      _start_app
  );
  wry::android_binding!(com_example, ttt);
}