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When should you use ContainerRelativeShape?
Updated for Xcode 12.0
New in iOS 14
SwiftUI has a number of built-in shapes that are self-explanatory, but there’s one that stands out: ContainerRelativeShape. This isn’t a fixed shape, but is instead designed to be an insettable version of whatever shape it’s placed inside, which is particularly important when creating home screen widgets.
For example, we could write code that draws a blue shape in our widget, and use ContainerRelativeShape to make sure it’s the same shape as the widget itself:
struct WidgetView: View {
var body: some View {
ZStack {
ContainerRelativeShape()
.inset(by: 4)
.fill(Color.blue)
Text("Hello, World!")
.font(.headline)
}
}
}SwiftUI is smart here: as you inset the container shape further and further, it will scale the corner radius of the container so that it looks great in your widget.
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