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Printing PDF loaded from web service

Forums > macOS

Good afternoon (o;

Seems that there is no thread or article about using printing on macOS or Swift in general....nobody prints anything anymore and just upload to a Cloud? (o;

Anyway....for my posting barcode app I load a preview of the barcode from Swiss Post to make sure everything is set up correctly...

Then I could load a final PDF rendering of the barcode with an actual tracking number attached....dunno if PDFKit would allow me to load that PDF from a web service directly...well my webservice actually as the original SOAP XML is a nightmare...and the new service requires OAuth2.

And then how would I go along to bring up a printing dialog with the loaded PDF?

thanks in advance richard


Well...looks like even displaying a local PDF file in SwiftUI isn't easy...and almost all examples are for iOS....

Tried code snippets from here:

No joy....but also doesn't thrown an error/warning:

import SwiftUI
import PDFKit

struct PDFKitRepresentedView: NSViewRepresentable {

  var url : URL
  func makeNSView(context: Context) -> PDFView {
    let pdfView = PDFView()
    pdfView.document = PDFDocument(url:url)
    return pdfView

    func updateNSView(_ nsView: PDFView, context: Context) {  }

struct ContentView: View {
    let url : URL? = URL(string: "/Users/klingler/Documents/example.pdf")

    var body: some View {
        let screenWidth = NSScreen.main?.visibleFrame.size.width ?? 0.0
        let screenHeight = NSScreen.main?.visibleFrame.size.height ?? 0.0
        VStack {
            Text("Hello, world!")
            PDFKitRepresentedView(url:self.url!).frame(width: screenWidth * 0.3, height: screenHeight * 0.5)


Ah wait....this works for remote files only ;-)

Now probably I have to load the PDF into a separate view and use that for printing....


Good morning (o;

Okay..this loads a PDF remotely and shows the preview in the printing dialog:

let printOpts: [NSPrintInfo.AttributeKey: Any] = [NSPrintInfo.AttributeKey.copies: 1, NSPrintInfo.AttributeKey.printerName:"Brother QL-1060N", NSPrintInfo.AttributeKey.paperName:"Post"]
let printInfo = NSPrintInfo(dictionary: printOpts)

let pdfView = PDFView()
pdfView.document = PDFDocument(url: self.url!)
pdfView.print(with: printInfo, autoRotate: false)

But following doesn't work:

  • Pressing print does nothing
  • Can't cancel printing dialog
  • No paper selection option

The print dialog just stays forever.....


Looks like no one here is using printing on macOS...

Seems it needs a window:

let pdfView = PDFView()
pdfView.document = PDFDocument(url: self.url!)

let wnd = NSWindow()
pdfView.autoScales = true
pdfView.displaysPageBreaks = false
wnd.contentView = pdfView

pdfView.print(with: printInfo, autoRotate: false)

Though this popups the printing dialog in the lower left corner....and when choosing "details" the window extends outside the screen...

And still no paper size selection....


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