在SwiftUI中检测DragGesture取消

struct ContentView: View {
    @State private var position = CGSize.zero
    
    var body: some View {
        Rectangle()
            .frame(width: 100, height: 100)
            .foregroundColor(.blue)
            .offset(x: position.width, y: position.height)
            .gesture(
                DragGesture()
                    .onChanged { gesture in
                        self.position = gesture.translation
                    }
                    .onEnded { gesture in
                        if gesture.translation == .zero {
                            // 拖动手势被取消
                            // 处理取消的情况
                        }
                    }
            )
    }
}