SwiftUI - Half modal?

I'm trying to recreate a Modal just like Safari in iOS13 in SwiftUI:

Here's what it looks like:

Does anyone know if this is possible in SwiftUI? I want to show a small half modal, with the option to drag to fullscreen, just like the sharing sheet.

Any advice is much appreciated!

iOS 16+

It looks like half sheet is finally supported in iOS 16.

To manage the size of sheet we can use PresentationDetent and specifically presentationDetents(_:selection:)

Here's an example from the documentation:

struct ContentView: View {
    @State private var showSettings = false
    @State private var settingsDetent = PresentationDetent.medium

    var body: some View {
        Button("View Settings") {
            showSettings = true
        }
        .sheet(isPresented: $showSettings) {
            SettingsView()
                .presentationDetents(
                    [.medium, .large],
                    selection: $settingsDetent
                 )
        }
    }
}

Note that if you provide more that one detent, people can drag the sheet to resize it.

Here are possible values for PresentationDetent:

• large
• medium
• fraction(CGFloat)
• height(CGFloat)
• custom<D>(D.Type)