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import barcode from barcode.writer import SVGWriter 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=SVGWriter()) output_filename = 'temp_barcode.svg' 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) dpi = 300 # Use a fixed DPI value (adjust it according to your printer's DPI) page_size_pixels = tuple(int(dpi * page_size_mm[i] / 25.4) for i in (0, 1)) # Load the SVG image with open(barcode_image, 'r') as f: svg_data = f.read() # Create a new instance of the Image class and set the size image = Image.new('RGB', page_size_pixels, (255, 255, 255)) # Convert the SVG data to a PNG image cairosvg.svg2png(bytestring=svg_data, write_to='temp_barcode.png') barcode_image = 'temp_barcode.png' # Load the PNG image png_image = Image.open(barcode_image) # Rotate the image by 90 degrees png_image = png_image.rotate(90, expand=True) png_width, png_height = png_image.size # Set the new size directly based on the paper dimensions new_size = (300, int(300 * 2.125)) # Resize the image without maintaining the aspect ratio resized_image = png_image.resize(new_size, Image.LANCZOS) resized_width, resized_height = resized_image.size # Calculate the position to center the image on the page x_pos = int((page_size_pixels[0] - resized_width) / 2) y_pos = int((page_size_pixels[1] - resized_height) / 2) - 80 # Start the print job printer_dc.StartDoc(barcode_image) printer_dc.StartPage() # Print the image dib = ImageWin.Dib(resized_image) dib.draw(printer_dc.GetSafeHdc(), (x_pos, y_pos, resized_width, resized_height)) # End the print job printer_dc.EndPage() printer_dc.EndDoc() printer_dc.DeleteDC() os.remove(barcode_image) os.remove('temp_barcode.svg') def main(): printers = get_printers() selected_printer = user_select_printer(printers)