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import io
import code128
from PIL import Image, ImageDraw, ImageFont, ImageWin
import os
import win32print
import win32ui
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_custom_code128(product_code, dpi=300, paper_size=(1, 2.125)):
barcode = code128.image(product_code, thickness=4, height=int(2.0 * dpi))
paper_width = int(paper_size[0] * dpi)
paper_height = int(paper_size[1] * dpi)
image = Image.new('1', (paper_height, paper_width), 1)
barcode_width, barcode_height = barcode.size
x_pos = int((paper_height - barcode_height) / 2)
y_pos = int((paper_width - barcode_width) / 2)
image.paste(barcode, (x_pos, y_pos))
draw = ImageDraw.Draw(image)
font = ImageFont.truetype("arial.ttf", 10)
text_width, text_height = draw.textsize(product_code, font=font)
text_x = int((paper_height - text_width) / 2)
text_y = y_pos + barcode_height + 2
draw.text((text_x, text_y), product_code, font=font, fill=0)
output = io.BytesIO()
image.save(output, format="PNG")
output.seek(0)
return output
def generate_barcode(product_code):
output_filename = 'temp_barcode'
barcode_image = generate_custom_code128(product_code)
with open(output_filename + '.png', 'wb') as f:
f.write(barcode_image.getvalue())
return output_filename
def print_barcode(printer, barcode_image):
printer_dc = win32ui.CreateDC()
printer_dc.CreatePrinterDC(printer)
page_size_mm = (25.4, 54)
dpi = 300
page_size_pixels = tuple(int(dpi * page_size_mm[i] / 25.4) for i in (0, 1))
image = Image.open(barcode_image+".png")
image_width, image_height = image.size
x_pos = int((page_size_pixels[0] - image_width) / 2)
y_pos = int((page_size_pixels[1] - image_height) / 2)
printer_dc.StartDoc(barcode_image+".png")
printer_dc.StartPage()
dib = ImageWin.Dib(image)
dib.draw(printer_dc.GetSafeHdc(), (x_pos, y_pos, image_width, image_height))
printer_dc.EndPage()
printer_dc.EndDoc()
printer_dc
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