Fix QPpdPrintDevice::isDefault

How to test:
 * Have two printers
 * Use lpoptions -d to set the default printer to be one and then the
other
 * Use lpstat -d to check setting the default printer worked
 * Use this simple test program and check the resulting values make
sense
    qDebug() << "DefaultPrinter" << QPrinterInfo::defaultPrinter().printerName();
    const QList<QPrinterInfo> list = QPrinterInfo::availablePrinters();
    for(const QPrinterInfo &pi : list) {
        qDebug() << pi.printerName() << pi.isDefault();
    }

Fixes: QTBUG-70317
Change-Id: I535d11451c568630a374f5c37d8cac32cbb6d3ab
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/plugins/printsupport/cups/qcupsprintersupport.cpp b/src/plugins/printsupport/cups/qcupsprintersupport.cpp
index 19e1df31f6..42a7a821f2 100644
--- a/src/plugins/printsupport/cups/qcupsprintersupport.cpp
+++ b/src/plugins/printsupport/cups/qcupsprintersupport.cpp
@@ -175,6 +175,11 @@ QStringList QCupsPrinterSupport::availablePrintDeviceIds() const
 
 QString QCupsPrinterSupport::defaultPrintDeviceId() const
 {
+    return staticDefaultPrintDeviceId();
+}
+
+QString QCupsPrinterSupport::staticDefaultPrintDeviceId()
+{
     QString printerId;
     cups_dest_t *dests;
     int count = cupsGetDests(&dests);