[英]How to make rounded corners in image that was drawn with BezierPath
我有一個 tableView 單元格,它有一個圖像視圖。 對於這個視圖,我創建了 UIImage 擴展,在那里我用 bezierPath 2 矩形繪制,然后,從這個繪圖中我制作了一個圖像。
class func drawTwoRectangles(_ frameOne: CGRect, frameTwo: CGRect, frameColor: UIColor) -> UIImage {
UIGraphicsBeginImageContext(CGSize(width: frameOne.size.width, height: frameOne.size.height))
let context = UIGraphicsGetCurrentContext()
UIColor(red: 0/255.0, green: 153/255.0, blue: 216/255.0, alpha: 1.0).setFill()
let bpath:UIBezierPath = UIBezierPath(roundedRect:CGRect(origin: CGPoint(x:1, y:1), size: CGSize(width: frameOne.size.width - 2, height: frameOne.size.height - 2)), byRoundingCorners: [.allCorners], cornerRadii: CGSize(width: 5, height: 5))
bpath.lineCapStyle = .round
bpath.lineJoinStyle = .round
bpath.close()
bpath.fill()
UIColor.white.setFill()
UIColor.white.setStroke()
let bpathTwo:UIBezierPath = UIBezierPath(rect: frameTwo)
bpathTwo.close()
bpathTwo.fill()
bpathTwo.stroke()
frameColor.setStroke()
let bpathThree:UIBezierPath = UIBezierPath(roundedRect: CGRect(origin: CGPoint(x:1, y:1), size: CGSize(width: frameOne.size.width - 2, height: frameOne.size.height - 2)), cornerRadius: 5)
bpathThree.lineWidth = 2
bpathThree.close()
bpathThree.stroke()
bpath.append(bpathTwo)
bpath.append(bpathThree)
context?.addPath(bpath.cgPath)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image!
}
因此,當我將此圖像設置為 Image 視圖時,角落不平滑,它們變得模糊:
能否請您指教,如何處理? 提前致謝!
嘗試替換這個:
UIGraphicsBeginImageContext(CGSize(width: frameOne.size.width, height: frameOne.size.height))
有了這個:
UIGraphicsBeginImageContextWithOptions(frameOne.size, false, UIScreen.main.scale)
順便說一句,根據文檔,您可以將0.0
作為第三個參數傳遞:
應用於位圖的比例因子。 如果指定值 0.0,則比例因子設置為設備主屏幕的比例因子。
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