Created
December 10, 2017 10:21
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import UIKit | |
extension CAShapeLayer { | |
func drawCircle(in rect: CGRect, with configuration: PathConfiguration) { | |
let center = CGPoint(x: rect.maxX / 2, y: rect.maxY / 2) | |
let longestSide = rect.height < rect.width ? rect.height : rect.width | |
let circularPath = UIBezierPath(arcCenter: center, radius: (longestSide / 2) - (configuration.lineWidth / 2), startAngle: configuration.startAngle, endAngle: 2 * CGFloat.pi, clockwise: true) | |
self.path = circularPath.cgPath | |
self.fillColor = UIColor.clear.cgColor | |
self.strokeColor = configuration.color.cgColor | |
self.lineWidth = configuration.lineWidth | |
self.lineCap = kCALineCapRound | |
switch configuration.type { | |
case .progress: | |
self.strokeEnd = 0 | |
case .track: | |
self.strokeEnd = 1 | |
case .custom(let value): | |
self.strokeEnd = value | |
} | |
} | |
} | |
enum StrokePosition: String { | |
case strokeStart, strokeEnd | |
} | |
struct PathConfiguration { | |
let color: UIColor | |
let lineWidth: CGFloat | |
let startAngle: CGFloat | |
let type: TrackType | |
} | |
enum TrackType { | |
case progress, track | |
case custom(CGFloat) | |
} |
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