swift - 画图 - 画矩形，虚线，圆和半圆

 

 

 

 

 

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

import UIKit   class JYJYBouncedCouponsViewCellBgView: UIView {       //一定要在这里设置 背景色， 不要再draw里面设置，     override init(frame: CGRect) {         super.init(frame: frame)         self.backgroundColor = UIColor.clear     }           required init?(coder aDecoder: NSCoder) {         fatalError("init(coder:) has not been implemented")     }           override func draw(_ rect: CGRect) {         // 获取上下文         guard let context = UIGraphicsGetCurrentContext() else {             return         }                   //画一个矩形, 带圆角的，填充色为FFE4C3，切圆角5         UIColor.init(hexColor: "FFE4C3").set()         context.addPath(UIBezierPath(roundedRect: rect, cornerRadius: 5).cgPath)         context.fillPath()         //填充色setFillColor , 画线的颜色setStrokeColor //        context.setFillColor(UIColor.init(hexColor: "FFE4C3").cgColor)                   // 画虚线         /**设置起始和结束位置**/         let startPointX: CGFloat = rect.size.width - 97         let staerPointY: CGFloat = 0         let endPointX: CGFloat = rect.size.width - 97         let endPointY: CGFloat =  rect.size.height         let path = CGMutablePath()         path.move(to: CGPoint(x: startPointX, y: staerPointY))         path.addLine(to: CGPoint(x: endPointX, y: endPointY))         context.addPath(path)                   context.setStrokeColor(UIColor.init(hexColor: "FF8E00").cgColor)         context.setLineWidth(1)         /*          phase参数表示在第一个虚线绘制的时候跳过多少个点          lengths的值｛10,10｝表示先绘制10个点，再跳过10个点，如此反复          如果把lengths值改为｛10, 20, 10｝，则表示先绘制10个点，跳过20个点，绘制10个点，跳过10个点，再绘制20个点，如此反复          */         context.setLineDash(phase: 0, lengths: [5,5])         context.strokePath()                   // 画半圆         UIColor.clear.set()         /***设置圆心位置***/         let circleY: CGFloat =  0         let topCirclePoint: CGPoint = CGPoint(x: rect.size.width - 97, y: circleY)         let bottomCenterPoint: CGPoint = CGPoint(x: rect.size.width - 97, y: rect.size.height)         let topCircle = UIBezierPath(arcCenter: topCirclePoint, radius: 5, startAngle: -CGFloat.pi, endAngle: CGFloat.pi, clockwise: true)         let bottpmCircle = UIBezierPath(arcCenter: bottomCenterPoint, radius: 5, startAngle: -CGFloat.pi, endAngle: CGFloat.pi, clockwise: true)         context.setBlendMode(.clear)         context.addPath(topCircle.cgPath)         context.addPath(bottpmCircle.cgPath)         context.fillPath()     }   }