Function use_device_pixel_ratio 

pub fn use_device_pixel_ratio() -> Signal<f64>

Reactive window.devicePixelRatio

NOTE: there is no event listener for window.devicePixelRatio change. So this function uses the same mechanism as described in this example.

Demo

Link to Demo

Usage

let pixel_ratio = use_device_pixel_ratio();

Server-Side Rendering

Make sure you follow the instructions in Server-Side Rendering.

On the server this function returns a Signal that is always 1.0.