Zebra Application

Core Functionality

• Visual programming interface for creating Zebra Programming Language (ZPL) labels

• Drag-and-drop block system for label design elements (barcodes, text, shapes)

• Generates valid ZPL code for thermal label printers

• Supports complex label layouts with grid management

Technical Stack

• Built with Blockly visual programming library (TypeScript)
• Custom block definitions for 30+ ZPL commands
• Context menu system for block manipulation
• TypeScript-based code generators for ZPL output
• Custom field types and block extensions

Key Features

1. ZPL Command Coverage

   • 25+ barcode types (QR, Data Matrix, UPC, Code 128, etc.)
   • Geometric shapes (boxes, circles, lines, ellipses)
   • Advanced text formatting and positioning
   • Symbol integration (copyright, trademark, certification marks)

2. Workspace Management

   • Block collapse/expand functionality
   • Multi-block operations (duplicate, delete, disable)
   • Workspace cleanup and organization tools
   • Undo/redo history tracking

3. Advanced Capabilities

   • Custom variable management
   • Date/time formatting utilities
   • Grid layout system with dynamic cell management
   • Direct ZPL command injection for power users
   • Context-aware input validation

4. User Experience

   • Visual preview of ZPL elements
   • Right-click context menus for quick edits
   • Block commenting system
   • Responsive design elements
   • Custom color coding for different element types

The project follows modern web development practices with a focus on type safety, component reusability, and user experience. It’s built as a server-side rendered application with client-side interactivity where needed.