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| import gradio as gr | |
| import base64 | |
| from mermaid import Mermaid | |
| from mermaid.graph import Graph | |
| # HTML template for rendering Mermaid diagrams | |
| html_template = """ | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script> | |
| <style> | |
| .mermaid {{ | |
| display: block; | |
| margin: auto; | |
| }} | |
| </style> | |
| </head> | |
| <body> | |
| <div class="mermaid">{}</div> | |
| <script> | |
| mermaid.initialize({{ startOnLoad: true }}); | |
| </script> | |
| </body> | |
| </html> | |
| """ | |
| def render_mermaid(mermaid_code): | |
| # Create a Mermaid graph using mermaid-py | |
| sequence = Graph('Sequence-diagram', mermaid_code) | |
| render = Mermaid(sequence) | |
| # Create HTML output | |
| html_content = html_template.format(render) | |
| # Create PNG output | |
| graphbytes = mermaid_code.encode("utf8") | |
| base64_bytes = base64.urlsafe_b64encode(graphbytes) | |
| base64_string = base64_bytes.decode("ascii") | |
| png_url = "https://mermaid.ink/img/" + base64_string | |
| return html_content, png_url | |
| # Create a Gradio Blocks interface with Citrus theme | |
| with gr.Blocks(theme=gr.themes.Citrus()) as mrender: | |
| gr.Markdown("# Mermaid Diagram Renderer") | |
| gr.Markdown("Input your Mermaid diagram code to render it and get a PNG image.") | |
| with gr.Row(): | |
| with gr.Column(): | |
| mermaid_input = gr.Textbox(label="Mermaid Code", placeholder="Enter your Mermaid diagram code here...") | |
| submit_btn = gr.Button("Render") | |
| with gr.Column(): | |
| html_output = gr.HTML() | |
| image_output = gr.Image() | |
| submit_btn.click(fn=render_mermaid, inputs=mermaid_input, outputs=[html_output, image_output]) | |
| # Launch the app | |
| mrender.launch() | |