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Circular UIView with drop shadow (using UIBezierPath)
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| import UIKit | |
| import PlaygroundSupport | |
| let container = UIView(frame: CGRect(x: 0, y: 0, width: 500, height: 200)) | |
| container.backgroundColor = .lightGray | |
| let buttonRadius: CGFloat = 50 | |
| let buttonSize = CGSize(width: buttonRadius * 2, height: buttonRadius * 2) | |
| let buttonPath = UIBezierPath(arcCenter: CGPoint(x: buttonRadius, y: buttonRadius), radius: buttonRadius, startAngle: 0, endAngle: CGFloat.pi * 2, clockwise: true) | |
| // only for shadow | |
| let buttonBackgroundView = UIView(frame: CGRect(origin: .zero, size: buttonSize)) | |
| buttonBackgroundView.backgroundColor = .clear | |
| buttonBackgroundView.center = container.center | |
| buttonBackgroundView.layer.masksToBounds = false | |
| buttonBackgroundView.layer.cornerRadius = buttonRadius | |
| buttonBackgroundView.layer.shadowOffset = .zero | |
| buttonBackgroundView.layer.shadowRadius = 5 | |
| buttonBackgroundView.layer.shadowOpacity = 0.5 | |
| buttonBackgroundView.layer.shadowPath = buttonPath.cgPath | |
| container.addSubview(buttonBackgroundView) | |
| // circle button view | |
| let buttonView = UIView(frame: CGRect(origin: .zero, size: buttonSize)) | |
| buttonView.backgroundColor = .white | |
| buttonView.frame.origin = .zero | |
| let buttonShape = CAShapeLayer() | |
| buttonShape.path = buttonPath.cgPath | |
| buttonView.layer.mask = buttonShape | |
| buttonBackgroundView.addSubview(buttonView) | |
| PlaygroundPage.current.liveView = container |
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