Update printing ticket (version 2.1)

Use hwapi::prn_getPrintResult() to detect print result.

src/ATBAPP/ATBDeviceControllerPlugin.cpp

@@ -407,15 +407,38 @@ void ATBDeviceControllerPlugin::onPrinterDataPrepared()
 {
     this->hw->prn_printKombiticket(this->currentSelectedTicketType);
 
-    // FAKE SIGNAL:
-    QTimer::singleShot(4000, this, SLOT(onPrintFinishedOK()));
-
+    // note: calling prn_getPrintResult() immediately may result in wrong answer!
+    // We have to wait "about some seconds" until calling this function!
+    QTimer::singleShot(4000, this, SLOT(onPrinterWaitForPrinting()));
 
     // old: use printer templates:
     // this->currentTemplate = 1;
     // this->onPrinterPrintNextTemplate();
 }
 
+void ATBDeviceControllerPlugin::onPrinterWaitForPrinting()
+{
+    quint8 printerResult = this->hw->prn_getPrintResult();
+
+    switch (printerResult) {
+    case 0:    // still printing
+        qCritical() << "--> printer: WaitForPrinting";
+        QTimer::singleShot(2000, this, SLOT(onPrinterWaitForPrinting()));
+        break;
+    case 1:    // printing finished, Ok
+        this->onPrintFinishedOK();
+        break;
+    case 2:    // printing finished, Error
+        this->onPrintFinishedERR();
+        break;
+    default:
+        qCritical() << "DC Error: wait for printing";
+        this->onPrintFinishedERR();
+        break;
+    }
+
+}
+
 
 void ATBDeviceControllerPlugin::onPrinterPrintNextTemplate()
 {

src/ATBAPP/ATBDeviceControllerPlugin.h

@@ -113,6 +113,7 @@ private slots:
 
    void onPrinterDataPrepared();
    void onPrinterPrintNextTemplate();
+   void onPrinterWaitForPrinting();
 
    void onPrintFinishedOK();
    void onPrintFinishedERR();