Created
August 4, 2017 11:02
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UIPageControl dot border
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| extension UIImage { | |
| class func outlinedEllipse(size: CGSize, color: UIColor, lineWidth: CGFloat = 1.0) -> UIImage? { | |
| UIGraphicsBeginImageContextWithOptions(size, false, 0.0) | |
| guard let context = UIGraphicsGetCurrentContext() else { | |
| return nil | |
| } | |
| context.setStrokeColor(color.cgColor) | |
| context.setLineWidth(lineWidth) | |
| let rect = CGRect(origin: .zero, size: size).insetBy(dx: lineWidth * 0.5, dy: lineWidth * 0.5) | |
| context.addEllipse(in: rect) | |
| context.strokePath() | |
| let image = UIGraphicsGetImageFromCurrentImageContext() | |
| UIGraphicsEndImageContext() | |
| return image | |
| } | |
| } | |
| //USE | |
| let image = UIImage.outlinedEllipse(size: CGSize(width: 7.0, height: 7.0), color: .lightGray) | |
| self.pageControl.pageIndicatorTintColor = UIColor.init(patternImage: image!) | |
| self.pageControl.currentPageIndicatorTintColor = .lightGray |
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