Print: set printer default font for printing text ...

E.g. used for prn_sendText().
E.g. in Lithuania only printer font table 24 supports special Lithuanian
charcters.
Other projects my not have font table 24 installed in printers. They use
e.g. printer font table 8.

src/ATBAPP/ATBDeviceControllerPlugin.cpp

@@ -804,8 +804,33 @@ void ATBDeviceControllerPlugin::requestPrintReceipt(const QHash<QString, QVarian
 
 void ATBDeviceControllerPlugin::requestPrintReceipt(const QString & printingString)
 {
+    // DEBUG --------------------------------------------------
+    QByteArray ba = printingString.toUtf8();
+    QString hexStrOrigin;
+    for (int i = 0; i < ba.size(); ++i) {
+        if (i > 0) hexStrOrigin += ":";
+        hexStrOrigin += QString("%1").arg((unsigned char)ba[i], 2, 16, QChar('0')).toUpper();
+    }
+    qCritical() << "-------------- printString as UTF-8 -------------";
+    qCritical() << hexStrOrigin;
+    qCritical() << "-------------------------------------------------";
+
+
     QByteArray ba_receipt = this->codec->fromUnicode(printingString);
 
+
+    // DEBUG --------------------------------------------------
+    QString hexStringConverted;
+    for (int i = 0; i < ba_receipt.size(); ++i) {
+        if (i > 0) hexStringConverted += ":";
+        hexStringConverted += QString("%1").arg((unsigned char)ba_receipt[i], 2, 16, QChar('0')).toUpper();
+    }
+    qCritical() << "------------------" << this->codec->name() << "-----------------";
+    qCritical() << hexStringConverted;
+    qCritical() << "-------------------------------------------------";
+
+
+
     //QByteArray ba = printingString.toUtf8();
     hw->prn_switchPower(true);
     hw->prn_setFonts(printerDefaultFont.font,