network_pos_printer

Description:

network pos printer

network_pos_printer #
A dart/flutter package to send texts silently (with simple styles like underline, bold, justification, etc.) to a network ESC/POS printer.







It lets you send the data to the printer without previewing a document (usually thermal printers), with the ESC/POS script.
Here an example on how to send texts and cut the ticket:
NetworkPOSPrinter.connect('192.168.81.80', 9100).then((printer) {

printer.writeLineWithStyle('Test with style'.toUpperCase(),
style: NetworkPOSPrinterStyle(
justification: NetworkPOSPrinterJustification.center,
width: NetworkPOSPrinterTextSize.size2,
height: NetworkPOSPrinterTextSize.size2,
font: NetworkPOSPrinterFont.fontB,
),
linesAfter: 1);

// total width of columns must be equal to 12
printer.writeRow(<NetworkPOSColumn>[
NetworkPOSColumn(
text: 'left align',
width: 6,
style: NetworkPOSPrinterStyle(
bold: true, justification: NetworkPOSPrinterJustification.left),
),
NetworkPOSColumn(
text: 'right align',
width: 6,
style: NetworkPOSPrinterStyle(
bold: true, justification: NetworkPOSPrinterJustification.right),
),
]);

printer.setBold(true);
printer.writeLine('Test bold');

printer.resetToDefault();

printer.setInverse(true);
printer.writeLine('Test inverse');

printer.resetToDefault();

printer.setUnderline(NetworkPOSPrinterUnderline.single);
printer.writeLine('Test underline');

printer.resetToDefault();

printer.setJustification(NetworkPOSPrinterJustification.center);
printer.writeLine('Test justification');

printer.resetToDefault();

printer.setFont(NetworkPOSPrinterFont.fontB);
printer.writeLine('Test font');

// space blanks before cut
printer.writeLines(List.filled(5, ''));

printer.cut();

printer.close().then((v) {
printer.destroy();
});
}).catchError((error) {
print('error : $error');
});
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Some printers will not accept NetworkPOSPrinterUnderline.double, only a single weight will be printed.
TODO #

method documentation

Support #
If this package was helpful to you in delivering on your project or you just wanna to support this project, a cup of tea would be highly appreciated ;-)