Function Viewport 

pub fn Viewport(props: ViewportProps) -> impl IntoView

A render surface backed by a web worker. On mount it sizes a canvas to the device pixel ratio, transfers it to an OffscreenCanvas, spawns the module worker at worker_url, and reports the Bridge, canvas, and dimensions through on_connect. It forwards pointer, wheel, touch, and resize events as ViewportEvents to on_input, worker messages to on_message, failures to the optional on_error, and toggles the grabbing signal during pointer interaction.

Required Props

• worker_url: impl Into<String>
• grabbing: RwSignal<bool>
• on_input: Callback<ViewportEvent>
• on_connect: Callback<(Bridge, OffscreenCanvas, f32, f32)>
• on_message: Callback<JsValue>

Optional Props

• on_error: Callback<String>