Round Specific Corners SwiftUI

Question

I know you can use .cornerRadius() to round all the corners of a swiftUI view but is there a way to round only specific corners such as the top?

Answer 1

Using as a custom modifier

You can use it like a normal modifier:

.cornerRadius(20, corners: [.topLeft, .bottomRight])

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Demo

You need to implement a simple extension on View like this:

extension View {
    func cornerRadius(_ radius: CGFloat, corners: UIRectCorner) -> some View {
        clipShape( RoundedCorner(radius: radius, corners: corners) )
    }
}

And here is the struct behind this:

struct RoundedCorner: Shape {

    var radius: CGFloat = .infinity
    var corners: UIRectCorner = .allCorners

    func path(in rect: CGRect) -> Path {
        let path = UIBezierPath(roundedRect: rect, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
        return Path(path.cgPath)
    }
}

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_{You can also use the shape directly as a clipping mask.}

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Sample Project: