PDA

A small, portable device with a screen, keyboard, and IO - running a custom Linux distribution.

LT Terminal Design

• A custom terminal program will replace the base tty terminal as the default system terminal
• In the background, a shell will be spawned to handle command processing, with input being captured by the custom program and routed to the underlying shell
• Output will be captured and redirected to the custom terminal program, where they can be handled and drawn directly to thee framebuffer fb0
• fbcon will need to be stopped from overwriting the custom graphaics in some manner, as well as setting the custom terminal to boot as the default

Components

• Underlying terminal program
  • Capture and redirect inputs
  • Display commands and output
  • Native double buffering
• Graphics API
  • Basic text drawing / rendering
  • Custom UI elements and styling
  • Interface for TUI to draw custom elements
  • Storage of the current screen state
  • Positioning and layout system
• TUI API

References

• Bit Blit
• Double Buffering