private PrintManager(String name, int remainingPrints)
{
_thisPrintBatch = NullPrintBatch.Instance;
_remainingPrintsInTray = remainingPrints;
_doPrintSignal = new ManualResetEvent(false);
_killSignal = new ManualResetEvent(false);
Thread printWorker = new Thread(() =>
{
SetPrinterSearchString(name);
FindPrinter();
_thisPrinter.Refresh();
while (!_killSignal.WaitOne(0))
{
if (_doPrintSignal.WaitOne(0))
{
_doPrintSignal.Reset();
Print();
}
}
});
printWorker.SetApartmentState(ApartmentState.STA);
printWorker.Start();
}
private bool EnQueuePrintBatch(IPrintBatch batch)
{
bool doPrint = false;
bool addedBatch = false;
if (batch.Template.CanAddMoreImages())
{
throw new Exception("Cannot print a print batch before it has all of the its images");
}
lock (_queueLock)
{
if (!_printQueue.Contains(batch))
{
_printQueue.Enqueue(batch);
addedBatch = true;
if (_printQueue.Count > 0)
{
doPrint = true;
}
}
}
if (doPrint)
{
_doPrintSignal.Set();
}
return(addedBatch);
}
// TODO: Make this thread safe
private void Print()
{
try
{
_thisPrinter.Refresh();
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.StackTrace);
}
// Get our current print Batch(if we don't already have it)
if (_thisPrintBatch.BatchFinishedPrinting())
{
_thisPrintBatch = DeQueuePrintBatch();
}
if (!_thisPrintBatch.BatchFinishedPrinting())
{
try
{
// See if our printer is in an error state
if (CheckPrinterForErrorState())
{
_inError = true;
}
else
{
FixedPage page = (_thisPrintBatch.Template.Clone() as PrintTemplate).Render();
_thisPrinter.UserPrintTicket.PageBorderless = PageBorderless.Borderless;
_thisPrinter.UserPrintTicket.PhotoPrintingIntent = PhotoPrintingIntent.PhotoBest;
_thisPrinter.UserPrintTicket.PageMediaSize = new PageMediaSize(4, 6);
_thisPrinter.Commit();
XpsDocumentWriter writer = PrintQueue.CreateXpsDocumentWriter(_thisPrinter);
writer.Write(page);
// Pretend we know that this print worked and tell our current print batch that it did.
_thisPrintBatch.RegisterSucessfullPrint();
_remainingPrintsInTray--;
// Print the next page (eventually this should run out of batches or a print error will happen...)
Print();
}
}
catch (Exception ex)
{
_printErrors = ex.Message;
_inError = true;
}
}
if (_inError)
{
InformClientOfPrintProblems(_printErrors);
}
}
