private async Task <bool> PrintLine(string message, ClaimedPosPrinter claimedPrinter)
{
if (claimedPrinter == null)
{
rootPage.NotifyUser("Claimed printer object is null. Cannot print.", NotifyType.ErrorMessage);
return(false);
}
if (claimedPrinter.Receipt == null)
{
rootPage.NotifyUser("No receipt printer object in claimed printer.", NotifyType.ErrorMessage);
return(false);
}
ReceiptPrintJob job = claimedPrinter.Receipt.CreateJob();
job.PrintLine(message);
if (await job.ExecuteAsync())
{
rootPage.NotifyUser("Printed line", NotifyType.StatusMessage);
return(true);
}
rootPage.NotifyUser("Was not able to print line", NotifyType.StatusMessage);
return(false);
}
/// <summary>
/// Prints a sample receipt.
/// </summary>
private async Task <bool> PrintReceipt(Dictionary <string, double> receiptItems)
{
if (!IsPrinterClaimed())
{
return(false);
}
ReceiptPrintJob job = claimedPrinter.Receipt.CreateJob();
job.PrintLine("======================");
job.PrintLine("| Sample Header |");
job.PrintLine("======================");
job.PrintLine("Item Price");
job.PrintLine("----------------------");
double total = 0.0;
foreach (KeyValuePair <string, double> item in receiptItems)
{
job.PrintLine(string.Format("{0,-15} {1,6:##0.00}", item.Key, item.Value));
total += item.Value;
}
job.PrintLine("----------------------");
job.PrintLine(string.Format("Total-----------{0,6:##0.00}", total));
ReceiptPrintJob merchantFooter = GetMerchantFooter(claimedPrinter);
ReceiptPrintJob customerFooter = GetCustomerFooter(claimedPrinter);
// execute print jobs
// Note that we actually execute "job" twice in order to print
// the statement for both the customer as well as the merchant.
if (!await job.ExecuteAsync() ||
!await customerFooter.ExecuteAsync() ||
!await job.ExecuteAsync() ||
!await merchantFooter.ExecuteAsync())
{
rootPage.NotifyUser("Failed to print receipts.", NotifyType.ErrorMessage);
return(false);
}
rootPage.NotifyUser("Printed receipts.", NotifyType.StatusMessage);
return(true);
}
/// <summary>
/// Prints a sample receipt.
/// </summary>
private async Task <bool> PrintReceipt(Dictionary <string, double> receiptItems)
{
if (!IsPrinterClaimed())
{
return(false);
}
string receiptString = "======================\n" +
"| Sample Header |\n" +
"======================\n" +
"Item Price\n" +
"----------------------\n";
double total = 0.0;
foreach (KeyValuePair <string, double> item in receiptItems)
{
receiptString += string.Format("{0,-15} {1,6:##0.00}\n", item.Key, item.Value);
total += item.Value;
}
receiptString += "----------------------\n";
receiptString += string.Format("Total-----------{0,6:##0.00}\n", total);
ReceiptPrintJob merchantJob = claimedPrinter.Receipt.CreateJob();
string merchantFooter = GetMerchantFooter();
PrintLineFeedAndCutPaper(merchantJob, receiptString + merchantFooter);
ReceiptPrintJob customerJob = claimedPrinter.Receipt.CreateJob();
string customerFooter = GetCustomerFooter();
PrintLineFeedAndCutPaper(customerJob, receiptString + customerFooter);
// execute print jobs
// Note that we actually execute "job" twice in order to print
// the statement for both the customer as well as the merchant.
if (!(await merchantJob.ExecuteAsync()) ||
!(await customerJob.ExecuteAsync()))
{
rootPage.NotifyUser("Failed to print receipts.", NotifyType.ErrorMessage);
return(false);
}
rootPage.NotifyUser("Printed receipts.", NotifyType.StatusMessage);
return(true);
}
private async Task <bool> PrintLine()
{
if (!IsPrinterClaimed())
{
return(false);
}
ReceiptPrintJob job = claimedPrinter.Receipt.CreateJob();
job.PrintLine(txtPrintLine.Text);
if (await job.ExecuteAsync())
{
rootPage.NotifyUser("Printed line", NotifyType.StatusMessage);
return(true);
}
rootPage.NotifyUser("Was not able to print line", NotifyType.StatusMessage);
return(false);
}
/// <summary>
/// Prints the line that is in the textbox. Then checks for any error conditions and reports the same to user.
/// </summary>
private async Task <bool> PrintLineAndCheckForErrors()
{
if (!IsPrinterClaimed())
{
return(false);
}
ReceiptPrintJob job = claimedPrinter.Receipt.CreateJob();
job.PrintLine(txtPrintLine.Text);
if (await job.ExecuteAsync())
{
rootPage.NotifyUser("Printed line", NotifyType.StatusMessage);
return(true);
}
else
{
if (claimedPrinter.Receipt.IsCartridgeEmpty)
{
rootPage.NotifyUser("Printer is out of ink. Please replace cartridge.", NotifyType.StatusMessage);
}
else if (claimedPrinter.Receipt.IsCartridgeRemoved)
{
rootPage.NotifyUser("Printer cartridge is missing. Please replace cartridge.", NotifyType.StatusMessage);
}
else if (claimedPrinter.Receipt.IsCoverOpen)
{
rootPage.NotifyUser("Printer cover is open. Please close it.", NotifyType.StatusMessage);
}
else if (claimedPrinter.Receipt.IsHeadCleaning)
{
rootPage.NotifyUser("Printer is currently cleaning the cartridge. Please wait until cleaning has completed.", NotifyType.StatusMessage);
}
else if (claimedPrinter.Receipt.IsPaperEmpty)
{
rootPage.NotifyUser("Printer is out of paper. Please insert a new roll.", NotifyType.StatusMessage);
}
else
{
rootPage.NotifyUser("Was not able to print line", NotifyType.StatusMessage);
}
}
return(false);
}
private async Task <bool> PrintBitmap()
{
if (!IsPrinterClaimed())
{
return(false);
}
claimedPrinter.Receipt.IsLetterQuality = true;
ReceiptPrintJob job = claimedPrinter.Receipt.CreateJob();
BitmapFrame logoFrame = await LoadLogoBitmapAsync();
job.PrintBitmap(logoFrame, PosPrinterAlignment.Center);
if (await job.ExecuteAsync())
{
rootPage.NotifyUser("Bitmap printed successfully", NotifyType.StatusMessage);
return(true);
}
rootPage.NotifyUser("Was not able to print bitmap", NotifyType.ErrorMessage);
return(false);
}
async Task <bool> ExecuteJobAndReportResultAsync(ReceiptPrintJob job)
{
bool success = await job.ExecuteAsync();
if (success)
{
rootPage.NotifyUser("Printing complete.", NotifyType.StatusMessage);
}
else
{
ClaimedReceiptPrinter receiptPrinter = rootPage.ClaimedPrinter.Receipt;
string reason;
if (receiptPrinter.IsCartridgeEmpty)
{
reason = "Printer is out of ink. Please replace cartridge.";
}
else if (receiptPrinter.IsCartridgeRemoved)
{
reason = "Printer cartridge is missing. Please replace cartridge.";
}
else if (receiptPrinter.IsCoverOpen)
{
reason = "Printer cover is open. Please close it.";
}
else if (receiptPrinter.IsHeadCleaning)
{
reason = "Printer is currently cleaning the cartridge. Please wait until cleaning has completed.";
}
else if (receiptPrinter.IsPaperEmpty)
{
reason = "Printer is out of paper. Please insert a new roll.";
}
else
{
reason = "Unable to print.";
}
rootPage.NotifyUser(reason, NotifyType.ErrorMessage);
}
return(success);
}