79 lines
2.6 KiB
Swift
79 lines
2.6 KiB
Swift
import UIKit
|
|
|
|
let appIconApple = generateAppleIcon()
|
|
let appIconUnknown = generateUnknownIcon()
|
|
|
|
func generateAppleIcon() -> UIImage? {
|
|
let rect = CGRect(x: 0, y: 0, width: 30, height: 30)
|
|
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0.0)
|
|
|
|
// #colorLiteral(red: 0.5843137503, green: 0.8235294223, blue: 0.4196078479, alpha: 1).setFill()
|
|
// UIBezierPath(roundedRect: rect, cornerRadius: 0).fill()
|
|
// print("drawing")
|
|
let fs = 36 as CGFloat
|
|
let hFont = UIFont.systemFont(ofSize: fs)
|
|
var attrib = [
|
|
NSAttributedString.Key.font: hFont,
|
|
NSAttributedString.Key.foregroundColor: UIColor.gray
|
|
]
|
|
|
|
let str = "" as NSString
|
|
let actualHeight = str.size(withAttributes: attrib).height
|
|
attrib[NSAttributedString.Key.font] = hFont.withSize(fs * fs / actualHeight)
|
|
|
|
let strW = str.size(withAttributes: attrib).width
|
|
str.draw(at: CGPoint(x: (rect.size.width - strW) / 2.0, y: -3), withAttributes: attrib)
|
|
|
|
let img = UIGraphicsGetImageFromCurrentImageContext()
|
|
UIGraphicsEndImageContext()
|
|
return img
|
|
}
|
|
|
|
func generateUnknownIcon() -> UIImage? {
|
|
let rect = CGRect(x: 0, y: 0, width: 30, height: 30)
|
|
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0.0)
|
|
|
|
let context = UIGraphicsGetCurrentContext()!
|
|
let lineWidth: CGFloat = 0.5
|
|
let corner: CGFloat = 6.75
|
|
let c = corner / CGFloat.pi + lineWidth/2
|
|
let sz: CGFloat = rect.height
|
|
let m = sz / 2
|
|
let r1 = 0.2 * sz, r2 = sqrt(2 * r1 * r1)
|
|
|
|
// diagonal
|
|
context.lineFromTo(x1: c, y1: c, x2: sz-c, y2: sz-c)
|
|
context.lineFromTo(x1: c, y1: sz-c, x2: sz-c, y2: c)
|
|
// horizontal
|
|
context.lineFromTo(x1: 0, y1: m, x2: sz, y2: m)
|
|
context.lineFromTo(x1: 0, y1: m + r1, x2: sz, y2: m + r1)
|
|
context.lineFromTo(x1: 0, y1: m - r1, x2: sz, y2: m - r1)
|
|
// vertical
|
|
context.lineFromTo(x1: m, y1: 0, x2: m, y2: sz)
|
|
context.lineFromTo(x1: m + r1, y1: 0, x2: m + r1, y2: sz)
|
|
context.lineFromTo(x1: m - r1, y1: 0, x2: m - r1, y2: sz)
|
|
// circles
|
|
context.addEllipse(in: CGRect(x: m - r1, y: m - r1, width: 2*r1, height: 2*r1))
|
|
context.addEllipse(in: CGRect(x: m - r2, y: m - r2, width: 2*r2, height: 2*r2))
|
|
let r3 = CGRect(x: c, y: c, width: sz - 2*c, height: sz - 2*c)
|
|
context.addEllipse(in: r3)
|
|
context.addRect(r3)
|
|
|
|
UIColor.clear.setFill()
|
|
UIColor.gray.setStroke()
|
|
let rounded = UIBezierPath(roundedRect: rect.insetBy(dx: lineWidth/2, dy: lineWidth/2), cornerRadius: corner)
|
|
rounded.lineWidth = lineWidth
|
|
rounded.stroke()
|
|
|
|
let img = UIGraphicsGetImageFromCurrentImageContext()
|
|
UIGraphicsEndImageContext()
|
|
return img
|
|
}
|
|
|
|
extension CGContext {
|
|
func lineFromTo(x1: CGFloat, y1: CGFloat, x2: CGFloat, y2: CGFloat) {
|
|
self.move(to: CGPoint(x: x1, y: y1))
|
|
self.addLine(to: CGPoint(x: x2, y: y2))
|
|
}
|
|
}
|