Features and Requirements

This section outlines the functional and nonfunctional requirements for the Sketch2Screen application.

Functional Requirements

Sketch Input and Recognition

• Users can create freehand sketches using drawing tools on a canvas interface
• Users can use basic drawing tools including:
  • Pen for drawing lines and shapes
  • Eraser for removing content
  • Shape tools (rectangle, circle, line)
  • Text input tool
• Users can undo and redo drawing actions

AI-Powered Generation

• Users can convert their sketches into UI component mockups using AI
• Users can view at least 3 different design variations for each sketch
• Users can generate mockups for common UI elements including:
  • Buttons and form inputs
  • Navigation bars and menus
  • Cards and content containers
  • Layout structures

Code Export

• Users are provided clean, readable, and properly formatted code
• Users can export selected components as HTML/CSS code
• Users can download generated code as individual files

Design Workflow

• Users can switch between Sketch Mode (for drawing) and Design Mode (for layout)
• Users can select their preferred mockup from AI-generated options
• Users can regenerate new options if unsatisfied with results
• Users can arrange multiple components into complete webpage layouts

Real-Time Collaboration

• Users can invite others to collaborate on the same project
• Users can see other collaborators' drawing actions in real-time
• Users can view when collaborators make component selections or AI generations

Nonfunctional Requirements

Performance

Response Times

• AI sketch processing shall complete within 15 seconds
• Drawing operations shall respond within 50 milliseconds
• Real-time collaboration changes will update under 200 milliseconds

Capacity and Throughput

• The system can support up to 8 concurrent users on a project
• The system can handle up to 30 AI generation requests per minute

Usability

User Experience

• The interface will be intuitive for non-programmers
• The interface will provide clear visual feedback for all user actions
• New users can complete their first export within 10 minutes
• Clear feedback and error messages are provided to the user

Technical

Browser Compatibility

• Sketch2Screen will support modern browsers
• The system will be responsive and functional on mobile devices

Code Output Compatibility

• Generated HTML/CSS shall be compatible with modern web standards
• React components shall be compatible with React 16+ and use functional components with hooks
• Exported code shall validate against web linting tools