Gfrktyl

I'm a Windows dev tasked with creating an app on MacOS. It's a favor for one of the nuns at my kids school. In this function, I need to print an image file. The first time I want to show the printer dialog but thereafter just print without user interaction.

I have hobbled this code together. It seems to work but it would be helpful to have a real Mac dev look at it and let me know of any improvements. My previous experience with MacOS and Swift are nil.

static func printPic(path : String) {



    let defaults = UserDefaults.standard



    // Load the image and put into an NSImageView

    let image = NSImage(contentsOfFile: path)

    let rect = NSRect(x: 0, y: 0, width: image!.size.width, height: image!.size.height)

    let pictureBox = NSImageView(frame: rect)

    pictureBox.image = image!



    let printInfo = NSPrintInfo()



    // Check if settings have already been saved

    if (defaults.object(forKey: "printerSettings") != nil) {

        // Use settings - don't show print dialog

        let printOperation = NSPrintOperation(view: pictureBox, printInfo: printInfo)

        // Load settings from UserDefaults

        if let data = defaults.object(forKey: "printerSettings") as? NSData {

            let unarc = NSKeyedUnarchiver(forReadingWith: data as Data)

            let settings = unarc.decodeObject(forKey: "root") as! NSMutableDictionary

            // Convert NSMutableDictionary to regular dictionary

            let userData = settings as NSDictionary? as? [AnyHashable: Any] ?? [:]

            printOperation.printInfo.printSettings.setDictionary(userData)

        }

        printOperation.showsPrintPanel = false

        printOperation.showsProgressPanel = false

        printOperation.run()

    }

    else {

        // First time, set some defaults and show print dialog

        printInfo.bottomMargin = 0

        printInfo.topMargin = 0

        printInfo.leftMargin = 0

        printInfo.rightMargin = 0

        printInfo.orientation = NSPaperOrientation.landscape

        printInfo.paperSize = NSSize(width: 6 * 72, height: 4 * 72)



        let printOperation = NSPrintOperation(view: pictureBox, printInfo: printInfo)



        printOperation.showsPrintPanel = true

        printOperation.showsProgressPanel = true

        printOperation.printPanel.options.insert(NSPrintPanelOptions.showsPaperSize)

        printOperation.printPanel.options.insert(NSPrintPanelOptions.showsOrientation)

        printOperation.printPanel.options.insert(NSPrintPanelOptions.showsPreview)



        printOperation.run()



        // Save settings for next time

        defaults.set(NSKeyedArchiver.archivedData(withRootObject: printOperation.printInfo.printSettings), forKey: "printerSettings")

        defaults.synchronize()

    }

}