PreviewsUtil.swift

import SwiftUI

struct PreviewsDemo: View {
    var body: some View {
        ZStack {
            Color(UIColor.systemBackground)
            Text("Hello, World!")
        }.ignoresSafeArea()
    }
}
struct PreviewsDemo_Previews: PreviewProvider {
    static var previews: some View {
        LightAndDark {
            Landscape {
                PreviewsDemo()
            }
        }
        
    }
}
#if DEBUG
struct LightAndDark<Content>: View where Content: View {
        let content: () -> Content
        var body: some View {
            ForEach(ColorScheme.allCases, id: \.self) { colorScheme in
                content().environment(\.colorScheme, colorScheme).previewDisplayName("\(colorScheme)")
                
            }
        }
}
struct Landscape<Content>: View where Content: View {
    let content: () -> Content
    let height = UIScreen.main.bounds.width //toggle width height
    let width = UIScreen.main.bounds.height
    var body: some View {
        content().previewLayout(PreviewLayout.fixed(width: width, height: height))
    }
}
#endif