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How to apply mirroring to any SwiftUI view?

question swiftui swift
Ram Patra Published on September 7, 2024

You can apply mirroring to a SwiftUI view by using the scaleEffect(x:y:anchor:) modifier to flip the view horizontally or vertically. Specifically, you can set the x or y scale to -1.0 to mirror the view along that axis.

Example of Horizontal Mirroring:

To mirror a view horizontally, you can set the x scale to -1.0.

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Original View")
                .font(.title)
                .padding()
            
            Image(systemName: "arrow.right")
                .resizable()
                .frame(width: 100, height: 100)
                .padding()

            Text("Mirrored View")
                .font(.title)
                .padding()

            Image(systemName: "arrow.right")
                .resizable()
                .frame(width: 100, height: 100)
                .padding()
                .scaleEffect(x: -1, y: 1) // Horizontally mirrored
        }
    }
}

@main
struct MirroredApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

Example of Vertical Mirroring:

Similarly, if you want to mirror the view vertically, you can set the y scale to -1.0.

.scaleEffect(x: 1, y: -1) // Vertically mirrored

Example of both Vertical and Horizontal Mirroring:

If you want to apply both horizontal and vertical mirroring (flip both axes), you can set both x and y scales to -1.0.

.scaleEffect(x: -1, y: -1) // Both horizontally and vertically mirrored

Summary:

  • Horizontal Mirroring: Use .scaleEffect(x: -1, y: 1)
  • Vertical Mirroring: Use .scaleEffect(x: 1, y: -1)
  • Both Axes Mirroring: Use .scaleEffect(x: -1, y: -1)
  • No Mirroring: Use .scaleEffect(x: 1, y: 1)

You can apply these transformations to any view, such as text, images, buttons, or even custom shapes.

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Ram Patra Published on September 7, 2024
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