private static void PrintImage(string address, int port)
{
Connection connection = new TcpConnection(address, port);
try
{
connection.Open();
ZebraPrinter printer = ZebraPrinterFactory.GetInstance(PrinterLanguage.ZPL, connection);
int x = 0;
int y = 0;
printer.PrintImage("data/mooncake.png", x, y);
}
catch (ConnectionException e)
{
Console.WriteLine(e.ToString());
}
catch (ZebraPrinterLanguageUnknownException e)
{
Console.WriteLine(e.ToString());
}
catch (IOException e)
{
Console.WriteLine(e.ToString());
}
finally
{
connection.Close();
}
}
private async void PrintButton_Clicked(object sender, EventArgs eventArgs)
{
SetInputEnabled(false);
Connection connection = null;
try {
await Task.Factory.StartNew(() => {
connection = CreateConnection();
connection.Open();
ZebraPrinter printer = ZebraPrinterFactory.GetInstance(connection);
if (printer.PrinterControlLanguage == PrinterLanguage.LINE_PRINT)
{
throw new ConnectionException("Operation cannot be performed with a printer set to line print mode");
}
string signaturePath = Path.Combine(LocalApplicationDataFolderPath, "signature.jpeg");
double printWidth = double.Parse(SGD.GET("ezpl.print_width", connection));
if (File.Exists(signaturePath))
{
File.Delete(signaturePath);
}
using (Stream stream = SignaturePad.GetImageStream(printWidth)) {
using (BinaryReader br = new BinaryReader(stream)) {
br.BaseStream.Position = 0;
byte[] signatureBytes = br.ReadBytes((int)stream.Length);
File.WriteAllBytes(signaturePath, signatureBytes);
}
}
ZebraImageI image = ZebraImageFactory.Current.GetImage(signaturePath);
printer.PrintImage(image, 0, 0, image.Width, image.Height, false);
});
} catch (Exception e) {
await DisplayAlert("Error", e.Message, "OK");
} finally {
try {
connection?.Close();
} catch (ConnectionException) { }
SetInputEnabled(true);
}
}