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* feat(fonts): add dynamic font selection and font manager improvements - Add font-selector widget for dynamic font selection in plugin configs - Enhance /api/v3/fonts/catalog with filename, display_name, and type - Add /api/v3/fonts/preview endpoint for server-side font rendering - Add /api/v3/fonts/<family> DELETE endpoint with system font protection - Fix /api/v3/fonts/upload to actually save uploaded font files - Update font manager tab with dynamic dropdowns, server-side preview, and font deletion - Add new BDF fonts: 6x10, 6x12, 6x13, 7x13, 7x14, 8x13, 9x15, 9x18, 10x20 (with bold/oblique variants) - Add tom-thumb, helvR12, clR6x12, texgyre-27 fonts Plugin authors can use x-widget: "font-selector" in schemas to enable dynamic font selection that automatically shows all available fonts. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): security fixes and code quality improvements - Fix README.md typos and add language tags to code fences - Remove duplicate delete_font function causing Flask endpoint collision - Add safe integer parsing for size parameter in preview endpoint - Fix path traversal vulnerability in /fonts/preview endpoint - Fix path traversal vulnerability in /fonts/<family> DELETE endpoint - Fix XSS vulnerability in fonts.html by using DOM APIs instead of innerHTML - Move baseUrl to shared scope to fix ReferenceError in multiple functions Security improvements: - Validate font filenames reject path separators and '..' - Validate paths are within fonts_dir before file operations - Use textContent and data attributes instead of inline onclick handlers - Restrict file extensions to known font types Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): address code issues and XSS vulnerabilities - Move `import re` to module level, remove inline imports - Remove duplicate font_file assignment in upload_font() - Remove redundant validation with inconsistent allowed extensions - Remove redundant PathLib import, use already-imported Path - Fix XSS vulnerabilities in fonts.html by using DOM APIs instead of innerHTML with template literals for user-controlled data Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): add size limits to font preview endpoint Add input validation to prevent DoS via large image generation: - MAX_TEXT_CHARS (100): Limit text input length - MAX_TEXT_LINES (3): Limit number of newlines - MAX_DIM (1024): Limit max width/height - MAX_PIXELS (500000): Limit total pixel count Validates text early before processing and checks computed dimensions after bbox calculation but before image allocation. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): improve error handling, catalog keys, and BDF preview - Add structured logging for cache invalidation failures instead of silent pass (FontUpload, FontDelete, FontCatalog contexts) - Use filename as unique catalog key to prevent collisions when multiple font files share the same family_name from metadata - Return explicit error for BDF font preview instead of showing misleading preview with default font Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): address nitpick issues in font management Frontend (fonts.html): - Remove unused escapeHtml function (dead code) - Add max-attempts guard (50 retries) to initialization loop - Add response.ok checks before JSON parsing in deleteFont, addFontOverride, deleteFontOverride, uploadSelectedFonts - Use is_system flag from API instead of hardcoded client-side list Backend (api_v3.py): - Move SYSTEM_FONTS to module-level frozenset for single source of truth - Add is_system flag to font catalog entries - Simplify delete_font system font check using frozenset lookup Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): align frontend upload validation with backend - Add .otf to accepted file extensions (HTML accept attribute, JS filter) - Update validation regex to allow hyphens (matching backend) - Preserve hyphens in auto-generated font family names - Update UI text to reflect all supported formats Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): fix lint errors and missing variable - Remove unused exception binding in set_cached except block - Define font_family_lower before case-insensitive fallback loop - Add response.ok check to font preview fetch (consistent with other handlers) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): address nitpick code quality issues - Add return type hints to get_font_preview and delete_font endpoints - Catch specific PIL exceptions (IOError/OSError) when loading fonts - Replace innerHTML with DOM APIs for trash icon (consistency) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix(fonts): remove unused exception bindings in cache-clearing blocks Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Chuck <chuck@example.com> Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
LED Matrix Web Interface V3
Modern, production web interface for controlling the LED Matrix display.
Overview
This directory contains the active V3 web interface with the following features:
- Real-time display preview via Server-Sent Events (SSE)
- Plugin management and configuration
- System monitoring and logs
- Modern, responsive UI
- RESTful API
Directory Structure
web_interface/
├── app.py # Main Flask application
├── start.py # Startup script
├── run.sh # Shell runner script
├── requirements.txt # Python dependencies
├── blueprints/ # Flask blueprints
│ ├── api_v3.py # API endpoints
│ └── pages_v3.py # Page routes
├── templates/ # HTML templates
│ └── v3/
│ ├── base.html
│ ├── index.html
│ └── partials/
└── static/ # CSS/JS assets
└── v3/
├── app.css
└── app.js
Running the Web Interface
Standalone (Development)
From the project root:
python3 web_interface/start.py
Or using the shell script:
./web_interface/run.sh
As a Service (Production)
The web interface can run as a systemd service that starts automatically based on the web_display_autostart configuration setting:
sudo systemctl start ledmatrix-web
sudo systemctl enable ledmatrix-web # Start on boot
Accessing the Interface
Once running, access the web interface at:
- Local: http://localhost:5000
- Network: http://:5000
Configuration
The web interface reads configuration from:
config/config.json- Main configurationconfig/secrets.json- API keys and secrets
API Documentation
The V3 API is available at /api/v3/ with the following endpoints:
Configuration
GET /api/v3/config/main- Get main configurationPOST /api/v3/config/main- Save main configurationGET /api/v3/config/secrets- Get secrets configurationPOST /api/v3/config/secrets- Save secrets configuration
Display Control
POST /api/v3/display/start- Start display servicePOST /api/v3/display/stop- Stop display servicePOST /api/v3/display/restart- Restart display serviceGET /api/v3/display/status- Get display service status
Plugins
GET /api/v3/plugins- List installed pluginsGET /api/v3/plugins/<id>- Get plugin detailsPOST /api/v3/plugins/<id>/config- Update plugin configurationGET /api/v3/plugins/<id>/enable- Enable pluginGET /api/v3/plugins/<id>/disable- Disable plugin
Plugin Store
GET /api/v3/store/plugins- List available pluginsPOST /api/v3/store/install/<id>- Install pluginPOST /api/v3/store/uninstall/<id>- Uninstall pluginPOST /api/v3/store/update/<id>- Update plugin
Real-time Streams (SSE)
GET /api/v3/stream/stats- System statistics streamGET /api/v3/stream/display- Display preview streamGET /api/v3/stream/logs- Service logs stream
Development
When making changes to the web interface:
- Edit files in this directory
- Test changes by running
python3 web_interface/start.py - Restart the service if running:
sudo systemctl restart ledmatrix-web
Notes
- Templates and static files use the
v3/prefix to allow for future versions - The interface uses Flask blueprints for modular organization
- SSE streams provide real-time updates without polling