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How to display solid shapes

Paul Hudson    @twostraws   

Updated for Xcode 13.0

SwiftUI has several built-in shapes such as rectangles, circles, and capsules, each of which can be created, color, and positioned as needed.

For example, if you wanted a 200x200 red rectangle, you would use this:

Rectangle()
    .fill(Color.red)
    .frame(width: 200, height: 200)

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A red square.

Similarly, if you wanted a 100x100 blue circle you would use this:

Circle()
    .fill(Color.blue)
    .frame(width: 100, height: 100)

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A blue circle.

There’s a dedicated shape for rounded rectangles, allowing you to customize how much rounding should be applied, as well as having complete control over the type of rounding. For example, this creates a rounded rectangle with 25 points of rounding on each corner:

RoundedRectangle(cornerRadius: 25)
    .fill(Color.green)
    .frame(width: 150, height: 100)

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A green rounded rectangle.

Finally, SwiftUI provides a Capsule() shape as a specialized form of rounded rectangles, where the shortest edge of the rectangle is always fully rounded. This is a popular style with buttons, because you get a lozenge-shaped button in just a couple of lines of code:

Capsule()
    .fill(Color.green)
    .frame(width: 150, height: 100)

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A green capsule or lozenge shape.

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