ScreenCoder / app.py
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import gradio as gr
import os
import tempfile
import cv2
import numpy as np
from screencoder.main import generate_html_for_demo
# Default Demo Examples
SAMPLE_IMAGES_DIR = "screencoder/data/input"
examples_data = []
if os.path.exists(SAMPLE_IMAGES_DIR):
sample_files = [f for f in sorted(os.listdir(SAMPLE_IMAGES_DIR)) if f.endswith(('.png', '.jpg', '.jpeg')) and not f.startswith('.')]
for filename in sample_files:
path = os.path.join(SAMPLE_IMAGES_DIR, filename)
prompt = f"Generate a modern UI based on the '{filename}' example, focusing on a clean and intuitive layout."
examples_data.append([path, prompt, path])
else:
print(f"Warning: Sample images directory not found at {SAMPLE_IMAGES_DIR}. Examples will be empty.")
def process_image_and_prompt(image_np, image_path_from_state, prompt):
final_image_path = ""
is_temp_file = False
if image_path_from_state:
final_image_path = image_path_from_state
print(f"Processing example image from: {final_image_path}")
elif image_np is not None:
is_temp_file = True
with tempfile.NamedTemporaryFile(suffix=".png", delete=False) as tmp:
image_bgr = cv2.cvtColor(image_np, cv2.COLOR_RGB2BGR)
cv2.imwrite(tmp.name, image_bgr)
final_image_path = tmp.name
print(f"Processing uploaded image from temporary file: {final_image_path}")
else:
return "<html><body><h1 style='font-family: sans-serif; text-align: center; margin-top: 40px;'>Please provide an image.</h1></body></html>", ""
print(f"With prompt: '{prompt}'")
html_content = generate_html_for_demo(final_image_path, prompt)
if is_temp_file:
os.unlink(final_image_path)
return html_content, html_content
with gr.Blocks(theme=gr.themes.Soft(primary_hue="blue", secondary_hue="sky"), fill_height=True) as demo:
active_image_path_state = gr.State(value=examples_data[0][2] if examples_data else None)
gr.Markdown("# ScreenCoder: Screenshot to Code")
with gr.Row(equal_height=True):
with gr.Column(scale=1):
gr.Markdown("### Step 1: Provide an Image")
active_image = gr.Image(
type="numpy",
height=300,
value=examples_data[0][0] if examples_data else None
)
upload_button = gr.UploadButton("Click to Upload or Drag-and-Drop", file_types=["image"], variant="primary")
gr.Markdown("### Step 2: Write a Prompt (Optional)")
prompt_input = gr.Textbox(
label="Instructions",
placeholder="e.g., 'Make this a dark theme and change the text.'",
lines=3,
value=examples_data[0][1] if examples_data else "Based on the layout, please fill in appropriate English text and beautify the image blocks."
)
generate_btn = gr.Button("Generate HTML", variant="primary", scale=2)
with gr.Column(scale=2):
with gr.Tabs():
with gr.TabItem("Preview"):
html_preview = gr.HTML(label="Live Preview", elem_id="html-preview")
with gr.TabItem("Code"):
html_code_output = gr.Code(label="Generated Code", language="html", elem_id="html-code")
if examples_data:
gr.Examples(
examples=examples_data,
inputs=[active_image],
label="Click an example to try it out",
)
def handle_upload(uploaded_image_np):
"""On upload, update image, clear state, and set a generic prompt for user input."""
default_prompt = "Based on the layout, please fill in appropriate English text and beautify the image blocks."
return uploaded_image_np, None, default_prompt
upload_button.upload(
fn=handle_upload,
inputs=upload_button,
outputs=[active_image, active_image_path_state, prompt_input]
)
generate_btn.click(
fn=process_image_and_prompt,
inputs=[active_image, active_image_path_state, prompt_input],
outputs=[html_preview, html_code_output],
show_progress="full"
)
if __name__ == "__main__":
demo.launch()