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| import gradio as gr | |
| from PIL import Image, ImageDraw | |
| import utils | |
| import io | |
| import os | |
| import cv2 | |
| def highlight_watermark(image, coords=(0, 0, 100, 50), color="red", width=5): | |
| """Highlights watermark area. Adapts rectangle size based on coordinates.""" | |
| try: | |
| draw = ImageDraw.Draw(image) | |
| x, y, w, h = coords | |
| draw.rectangle((max(0, x - 5), max(0, y - 5), x + w + 5, y + h + 5), outline=color, width=width) | |
| return image | |
| except Exception as e: | |
| print(f"Error highlighting: {e}") | |
| return image | |
| def choose_encode(inp_im, inp_mark, cho): | |
| try: | |
| if not inp_im: | |
| return None, "Please upload an image.", None | |
| if not inp_mark: | |
| return None, "Please enter watermark text.", None | |
| valid_image_types = ["png", "jpg", "jpeg", "gif", "bmp", "tiff", "webp"] | |
| if not any(inp_im.lower().endswith("." + ext) for ext in valid_image_types): | |
| return None, "Invalid image format. Use PNG or JPG.", None | |
| if cho == "stegan": | |
| image_pil = Image.open(inp_im) | |
| image_cv2, msg = utils.encode(inp_im, inp_mark) | |
| if msg: | |
| return None, msg, None | |
| image_pil = Image.fromarray(cv2.cvtColor(image_cv2, cv2.COLOR_BGR2RGB)) | |
| highlighted_image = highlight_watermark(image_pil.copy(), (0, 0, image_pil.width, image_pil.height), color="blue") | |
| img_byte_arr = io.BytesIO() | |
| highlighted_image.save(img_byte_arr, format='PNG') | |
| img_byte_arr.seek(0) | |
| download_name = os.path.splitext(os.path.basename(inp_im))[0] + "_watermarked.png" | |
| return highlighted_image, "Steganography watermark added successfully.", (download_name, img_byte_arr.read()) | |
| elif cho == "pnginfo": | |
| out_im_path, out_msg = utils.png_encode(inp_im, inp_mark) | |
| if out_msg: # Handle potential errors from png_encode | |
| return None, out_msg, None | |
| try: | |
| img = Image.open(out_im_path) | |
| coords = utils.png_encode_coords if hasattr(utils, 'png_encode_coords') else (50, 50, 200, 50) | |
| highlighted_image = highlight_watermark(img.copy(), coords) | |
| img_byte_arr = io.BytesIO() | |
| highlighted_image.save(img_byte_arr, format='PNG') | |
| img_byte_arr.seek(0) | |
| download_name = os.path.splitext(os.path.basename(inp_im))[0] + "_watermarked.png" | |
| return highlighted_image, "PNG metadata watermark added successfully.", (download_name, img_byte_arr.read()) | |
| except Exception as e: | |
| return None, f"Error processing PNG: {e}", None | |
| except FileNotFoundError: | |
| return None, "Image file not found.", None | |
| except ValueError as e: | |
| return None, f"Invalid input: {e}", None | |
| except Exception as e: | |
| return None, f"An unexpected error occurred: {e}", None | |
| def detect_watermark(det_im): | |
| if not det_im: | |
| return "Please upload an image." | |
| valid_image_types = ["png", "jpg", "jpeg", "gif", "bmp", "tiff", "webp"] | |
| if not any(det_im.lower().endswith("." + ext) for ext in valid_image_types): | |
| return "Invalid image format. Use PNG or JPG." | |
| det_msg = utils.decode(det_im) | |
| if det_msg is None or det_msg == "": | |
| return "No watermark detected or not encoded with this tool." | |
| return det_msg | |
| with gr.Blocks() as app: | |
| with gr.Tab("Add Watermark"): | |
| cho = gr.Radio(choices=["stegan", "pnginfo"], value="stegan") | |
| with gr.Row(): | |
| with gr.Column(): | |
| inp_im = gr.Image(label="Input Image", type="filepath") | |
| inp_mark = gr.Textbox(label="Watermark") | |
| mark_btn = gr.Button("Add Watermark") | |
| msg_box = gr.Textbox(label="System Message") | |
| with gr.Column(): | |
| out_im = gr.Image(label="Watermarked Image") | |
| file_output = gr.File() | |
| with gr.Tab("Detect Watermark"): | |
| with gr.Row(): | |
| with gr.Column(): | |
| det_im = gr.Image(label="Watermarked Image", type="filepath") | |
| det_btn = gr.Button("Detect") | |
| with gr.Column(): | |
| det_msg = gr.Textbox(label="Detected Watermark", lines=6, max_lines=50) | |
| mark_btn.click(choose_encode, [inp_im, inp_mark, cho], [out_im, msg_box, file_output]) | |
| det_btn.click(utils.decode, [det_im], det_msg) | |
| app.launch() |