From 18c51358aa5fa3cbffdaab9013413eb8deac8c31 Mon Sep 17 00:00:00 2001 From: Ramon Poca Date: Thu, 13 Dec 2018 08:01:05 -0800 Subject: [PATCH] Add Win32Raw printer to available printers --- src/escpos/printer.py | 48 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/src/escpos/printer.py b/src/escpos/printer.py index d7fc6ac..a8905d0 100644 --- a/src/escpos/printer.py +++ b/src/escpos/printer.py @@ -334,3 +334,51 @@ class Dummy(Escpos): def close(self): pass + + +_WIN32PRINT=False +try: + import win32print + _WIN32PRINT=True +except ImportError: + pass + +if _WIN32PRINT: + class Win32Raw(Escpos): + def __init__(self, printer_name = None, profile=None, magic_encode_args=None, **kwargs): + super().__init__(profile=profile, magic_encode_args=magic_encode_args, **kwargs) + if printer_name is not None: + self.printer_name = printer_name + else: + self.printer_name = win32print.GetDefaultPrinter() + self.hPrinter = None + + + def open(self, job_name="python-escpos"): + if self.printer_name is None: + raise Exception("Printer not found") + self.hPrinter = win32print.OpenPrinter (self.printer_name) + self.current_job = win32print.StartDocPrinter (self.hPrinter, 1, (job_name, None, "RAW")) + win32print.StartPagePrinter (self.hPrinter) + + def close(self): + if not self.hPrinter: + return + win32print.EndPagePrinter (self.hPrinter) + win32print.EndDocPrinter (self.hPrinter) + win32print.ClosePrinter (self.hPrinter) + self.hPrinter = None + + def _raw(self, msg): + """ Print any command sent in raw format + + :param msg: arbitrary code to be printed + :type msg: bytes + """ + if self.printer_name is None: + raise Exception("Printer not found") + if self.hPrinter is None: + raise Exception("Printer job not opened") + win32print.WritePrinter (self.hPrinter, msg) + +