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import qrcode
import cv2
from PIL import Image
import gradio as gr
import tempfile
import os
import numpy as np
# Function to generate a QR code
def generate_qr(data):
qr = qrcode.QRCode(
version=1,
error_correction=qrcode.constants.ERROR_CORRECT_L,
box_size=10,
border=4,
)
qr.add_data(data)
qr.make(fit=True)
img = qr.make_image(fill="black", back_color="white")
# Save to a temporary file and return the file path
temp_file = tempfile.NamedTemporaryFile(delete=False, suffix=".png")
img.save(temp_file.name, format="PNG")
temp_file.close() # Close the file to flush contents to disk
return temp_file.name
# Function to read a QR code using OpenCV
def read_qr(img):
# Convert PIL image to a NumPy array
img = np.array(img)
# Convert RGB to BGR format as OpenCV expects BGR
if img.ndim == 3:
img = cv2.cvtColor(img, cv2.COLOR_RGB2BGR)
# Initialize OpenCV QR code detector
detector = cv2.QRCodeDetector()
data, _, _ = detector.detectAndDecode(img)
return data if data else "No QR code found."
# Custom CSS styling as HTML for dark mode
custom_css = """
<style>
body {background-color: #1e1e2f; font-family: 'Arial', sans-serif; color: #e0e0e0;}
.gradio-container {max-width: 700px; margin: auto; padding: 25px; background-color: #2c2c3e;
border-radius: 15px; box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);}
h1, h2 {text-align: center; color: #ffffff; font-weight: bold; margin-bottom: 15px;}
.gr-button {background-color: #4a4a6a; color: #ffffff; padding: 10px 25px; border-radius: 8px;
font-size: 16px; border: none; transition: 0.3s;}
.gr-button:hover {background-color: #6a6a8a; transform: scale(1.05);}
input, textarea, .gr-box {background-color: #3a3a4f; border: 1px solid #555; border-radius: 10px;
padding: 10px; font-size: 14px; color: #e0e0e0;}
.gr-box:hover, input:hover, textarea:hover {border-color: #777;}
.tab {margin-top: 20px;}
</style>
"""
# Gradio interface for generating and reading QR codes
def create_gradio_interface():
# QR Code Generator Interface
generate_interface = gr.Interface(
fn=generate_qr,
inputs=gr.Textbox(placeholder="Enter text or URL here...", label="Data to Encode"),
outputs=gr.Image(label="Generated QR Code"),
title="Generate QR Code",
description="Quickly create a QR code from any text or URL.",
theme="compact",
)
# QR Code Reader Interface
read_interface = gr.Interface(
fn=read_qr,
inputs=gr.Image(type="pil", label="Upload QR Code Image"),
outputs=gr.Textbox(label="Decoded Data"),
title="Read QR Code",
description="Upload an image with a QR code to decode the embedded data.",
theme="compact",
)
# Combine interfaces into a single tabbed layout
interface = gr.TabbedInterface(
[generate_interface, read_interface],
["Generate QR Code", "Read QR Code"]
)
# Launch interface with custom HTML for CSS styling
with gr.Blocks() as demo:
gr.HTML(custom_css) # Embed the custom CSS
gr.Markdown("# QR Code Tool\nEasily generate and decode QR codes.")
interface.render()
demo.launch(share=True)
# Run the Gradio interface
create_gradio_interface()
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