pub fn scaled_image_size<Renderer>(
    renderer: &Renderer,
    handle: &<Renderer as Renderer>::Handle,
    state: &State,
    bounds: Size,
    content_fit: ContentFit,
) -> Sizewhere
    Renderer: Renderer,Expand description
Returns the bounds of the underlying image, given the bounds of
the Viewer. Scaling will be applied and original aspect ratio
will be respected.