swift 带有Swift 4 ios应用程序填充的圆形视图

Posted 2021-05-19

//  CircleView.swift
//  OpenSource
//
//  Created by abdelrahman mohamed on 2/13/18.
//  Copyright © 2018 abdelrahman mohamed. All rights reserved.
//

import UIKit

@IBDesignable
class CircleView: UIView {
    
    @IBInspectable var fillColor: UIColor?
    
    var lighterColor: UIColor? {
        return fillColor?.withAlphaComponent(0.2)
    }
    
    override func draw(_ rect: CGRect) {
        guard let context = UIGraphicsGetCurrentContext() else {return}
        
        context.addEllipse(in: rect)
        context.setFillColor(lighterColor?.cgColor ?? UIColor.blue.cgColor) 
        context.fillPath()
        
        context.addEllipse(in: rect.insetBy(dx: 20, dy: 20))
        context.setFillColor(fillColor?.cgColor ?? UIColor.blue.cgColor)
        context.fillPath()
    }
}