在多处地方需要使用圆角图片,方便拿来用
import Foundation
extension UIImage {
/// 异步设置圆角图片
///
/// - Parameters:
/// - size: 图片大小
/// - fillColor: 裁切区域填充颜色
/// - completion: 回调裁切结果图片
func Westrice_cornetImage(size:CGSize,fillColor:UIColor = UIColor.white,completion:@escaping (_ image:UIImage?)->()){
//异步绘制裁剪
DispatchQueue.global().async {
//开启上下文
UIGraphicsBeginImageContextWithOptions(size, true, 0)
let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
//填充颜色
fillColor.setFill()
UIRectFill(rect)
//赛贝尔路径裁剪
let path = UIBezierPath.init(ovalIn: rect)
path.addClip()
self.draw(in: rect)
//获取结果
let resultImage = UIGraphicsGetImageFromCurrentImageContext()
//关闭上下文
UIGraphicsEndImageContext()
//主队列回调
DispatchQueue.main.async{
completion(resultImage)
}
}
}
}
使用方法:
image?.Westrice_cornetImage(size: (self?.bounds.size)!, fillColor:UIColor.lightGray, completion: { (result:UIImage?) in
self?.image = result
})
