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import barcode from barcode.writer import ImageWriter from PIL import Image import os import platform import subprocess import win32print import win32ui from ctypes import windll def get_printers(): printers = [printer[2] for printer in win32print.EnumPrinters(win32print.PRINTER_ENUM_LOCAL)] return printers def user_select_printer(printers): if not printers: print("No printers found.") return None print("List of printers:") for i, printer in enumerate(printers, start=1): print(f"{i}. {printer}") selected_index = int(input("Enter the number of the printer you'd like to use: ")) return printers[selected_index - 1] def get_product_code(): product_code = input("Enter the product code: ") return product_code.upper() def generate_barcode(product_code): Code128 = barcode.get_barcode_class('code128') barcode_image = Code128(product_code, writer=ImageWriter()) output_filename = 'temp_barcode.png' barcode_image.save(output_filename) return output_filename def print_barcode(printer, barcode_image): # Get the printer DC printer_dc = win32ui.CreateDC() printer_dc.CreatePrinterDC(printer) # Get the page size and image size in pixels page_size_mm = (25.4, 54) page_size_pixels = tuple(int(windll.gdi32.GetDeviceCaps(printer_dc.GetHandle(), i) * page_size_mm[i] / 1000) for i in (0, 1)) image = Image.open(barcode_image) image_width, image_height = image.size # Calculate the scaling factor to fit the image on the page scaling_factor = min(page_size_pixels[0] / image_width, page_size_pixels[1] / image_height) # Calculate the position to center the image on the page x_pos = (page_size_pixels[0] - scaling_factor * image_width) / 2 y_pos = (page_size_pixels[1] - scaling_factor * image_height) / 2 # Start the print job h_printer = win32print.OpenPrinter(printer) h_job = win32print.StartDocPrinter(h_printer, 1, ('Barcode', None, 'RAW')) win32print.StartPagePrinter(h_printer) # Print the image dib = ImageWin.Dib(image) dib.draw(printer_dc.GetHandle(), (x_pos, y_pos, scaling_factor * image_width, scaling_factor * image_height)) # End the print job win32print.EndPagePrinter(h_printer) win32print.EndDocPrinter(h_printer) win32print.ClosePrinter(h_printer) def main(): printers = get_printers() selected_printer = user_select_printer(printers) if selected_printer is None: return while True: product_code = get_product_code() barcode_image = generate_barcode(product_code) print_barcode(selected_printer, barcode_image) print("Barcode printed successfully.") continue_printing = input("Do you want to print another barcode? (y/n): ") if continue_printing.lower() != 'y': break if __name__ == "__main__": main()
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