Rounded Borders on Selection of PlainListStyle() in SwiftUI macOS: A Comprehensive Guide
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Rounded Borders on Selection of PlainListStyle() in SwiftUI macOS: A Comprehensive Guide

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Are you tired of the dull, sharp-edged selection rectangle in your SwiftUI macOS app? Do you want to add a touch of elegance to your list views with rounded borders? Look no further! In this article, we will explore how to achieve rounded borders on selection of PlainListStyle() in SwiftUI macOS.

Why Rounded Borders Matter

In the world of user experience (UX) design, every detail counts. Rounded borders can make a significant difference in the overall aesthetic appeal of your app. They can add a sense of softness, friendliness, and approachability to your interface. Moreover, rounded borders can help guide the user’s attention and create a more immersive experience.

The Problem with PlainListStyle()

By default, the PlainListStyle() in SwiftUI macOS uses a plain, rectangular selection rectangle. While this may be functional, it can be visually unappealing. The sharp edges can make your app feel dated and unrefined.


List {
    ForEach(items) { item in
        Text(item.name)
    }
}
.listStyle(PlainListStyle())

The code above will render a plain list with a rectangular selection rectangle.

Solving the Problem: Adding Rounded Borders

To add rounded borders to the selection rectangle, we need to create a custom list style. We will override the makeBody/configuration: method to return a custom view that will render the rounded borders.


struct RoundedSelectionListStyle:ListAdapterStyle {
    func makeBody(configuration: Configuration) -> some View {
        VStack(alignment: .leading) {
            configuration.label
                .frame(maxWidth: .infinity, alignment: .leading)
                .contentShape(Rectangle())
                .overlay(
                    RoundedRectangle(cornerRadius: 8)
                        .stroke(Color.accentColor, lineWidth: 2)
                )
        }
        .padding(10)
    }
}

In the code above, we create a custom list style called RoundedSelectionListStyle. We override the makeBody/configuration: method to return a custom view that uses a VStack to stack the label and the rounded rectangle. We use the contentShape modifier to set the shape of the selection rectangle to a rectangle, and then we use the overlay modifier to add the rounded rectangle with a stroke.

Using the Custom List Style

To use the custom list style, we simply need to replace the PlainListStyle() with our custom list style.


List {
    ForEach(items) { item in
        Text(item.name)
    }
}
.listStyle(RoundedSelectionListStyle())

The code above will render a list with rounded borders on selection.

Customizing the Rounded Borders

You can customize the appearance of the rounded borders by adjusting the parameters of the RoundedRectangle and stroke modifiers.

CornerRadius

The cornerRadius parameter sets the radius of the rounded corners. You can adjust this value to change the curvature of the corners.


RoundedRectangle(cornerRadius: 16)
    .stroke(Color.accentColor, lineWidth: 2)

In the code above, we increase the corner radius to 16, making the corners more rounded.

Stroke Color and Width

The stroke modifier sets the color and width of the stroke. You can adjust these values to change the appearance of the border.


RoundedRectangle(cornerRadius: 8)
    .stroke(Color.blue, lineWidth: 4)

In the code above, we set the stroke color to blue and increase the width to 4, making the border thicker and more prominent.

Troubleshooting

If you encounter any issues with the custom list style, here are some common troubleshooting tips:

  • Make sure to import the correct module: You need to import the SwiftUI module to use the custom list style.
  • Check the list style identifier: Ensure that you are using the correct list style identifier in the listStyle(_:) modifier.
  • Verify the configuration: Make sure that the configuration parameter is properly configured in the makeBody/configuration: method.

Conclusion

In this article, we have explored how to add rounded borders to the selection rectangle of PlainListStyle() in SwiftUI macOS. By creating a custom list style and overriding the makeBody/configuration: method, we can add a touch of elegance to our list views. Remember to customize the appearance of the rounded borders to fit your app's unique style and aesthetic.

With this comprehensive guide, you should be able to achieve rounded borders on selection of PlainListStyle() in SwiftUI macOS. Happy coding!

Property Description
cornerRadius Sets the radius of the rounded corners
stroke Sets the color and width of the stroke
listStyle(_:) modifier Sets the list style identifier
  1. Import the correct module: SwiftUI
  2. Check the list style identifier: Ensure that you are using the correct list style identifier in the listStyle(_:) modifier.
  3. Verify the configuration: Make sure that the configuration parameter is properly configured in the makeBody/configuration: method.

By following the instructions in this article, you should be able to achieve rounded borders on selection of PlainListStyle() in SwiftUI macOS. If you have any further questions or need additional guidance, feel free to ask!

Frequently Asked Question

Get the inside scoop on Rounded borders on selection of PlainListStyle() in SwiftUI macOS!

How can I add rounded borders to a selection in a PlainListStyle() in SwiftUI macOS?

You can add rounded borders to a selection in a PlainListStyle() in SwiftUI macOS by using the `.listRowBackground()` modifier and creating a custom view with a rounded rectangle. For example: `List { ... }.listStyle(PlainListStyle()).listRowBackground(RoundedRectangle(cornerRadius: 10).fill(Color.gray))`.

Can I customize the color and thickness of the rounded border?

Yes, you can customize the color and thickness of the rounded border by modifying the `fill` and `stroke` properties of the `RoundedRectangle`. For example: `.listRowBackground(RoundedRectangle(cornerRadius: 10).fill(Color.blue).stroke(Color.red, lineWidth: 2))`.

Will the rounded border apply to all items in the list?

No, the rounded border will only apply to the selected item in the list. If you want to apply it to all items, you can use the `.listRowBackground()` modifier on each individual item instead of on the `List` itself.

Is there a way to make the rounded border animated when the selection changes?

Yes, you can make the rounded border animated when the selection changes by using the `.withAnimation()` modifier. For example: `.listRowBackground(RoundedRectangle(cornerRadius: 10).fill(Color.blue).animation(.easeInOut))`.

Can I use this approach with other list styles, such as SidebarListStyle?

Yes, this approach can be used with other list styles, such as SidebarListStyle, by modifying the `listRowBackground()` modifier to match the style of the list. However, the exact implementation may vary depending on the list style.

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