Image-Filter

Swift 5 Core Graphic Practice

Best Thanks to raywenderlich.com

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Extra QRCode & Barcode Generator (Used in this demo)

extension UIImage {

    class func barCodeImageWithInfo(info: String) -> UIImage? {
        
        let filter = CIFilter(name:"CICode128BarcodeGenerator")!
        filter.setDefaults()
        let data = info.data(using: .utf8)
        filter.setValue(data, forKey: "inputMessage")
        let outputImage = filter.outputImage
        
        return UIImage(ciImage: outputImage!)
    }
    
    class func qrCodeImageWithInfo(info: String!, width: CGFloat) -> UIImage? {
    
        let strData = info.data(using: .utf8, allowLossyConversion: false)
        let qrFilter = CIFilter(name:"CIQRCodeGenerator")!
        qrFilter.setValue(strData, forKey: "inputMessage")
        qrFilter.setValue("H", forKey: "inputCorrectionLevel")
        let qrImage = qrFilter.outputImage
        
        let colorFilter = CIFilter(name:"CIFalseColor")!
        colorFilter.setDefaults()
        colorFilter.setValue(qrImage, forKey: kCIInputImageKey)
        colorFilter.setValue(CIColor.white(), forKey: "inputColor0")
        colorFilter.setValue(CIColor.black(), forKey: "inputColor1")
        let colorImage = colorFilter.outputImage
        
        let scale = CGFloat(0.3)
        let codeImage = UIImage(ciImage: colorImage!, scale: scale, orientation: .up)
        return codeImage
    }
}

Credits

This demo project is owned and maintained by the vin20777.

Demo Images were originally created by raywenderlich.com.