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backend-specification.md

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Supportability by Backend

Backend Action Not Supported
crosscurses ScrollUp, ScrollDown, Enter/Leave alternate screen (default alternate screen)
termion ScrollUp, ScrollDown,
crossterm
Backend Attribute Not Supported
crosscurses Fraktur, NormalIntensity, Framed
termion ConcealOn, ConcealOff, Fraktur, NormalIntensity
crossterm

Backend Evaluation

This section describes the pros and cons of each backend.

Crossterm

feature flag: (crossterm-backend)

pros

  • Written in pure Rust
  • Works crossplatform
  • Performant
  • Updates Regularly
  • Supports all features of this library.
  • Works without threads or spinning loops.
  • Supports advanced event / modifier support.

cons

  • Uses stdout for cursor position.

Termion (termion-backend)

feature flag: (crosscurses-backend)

pros

  • Written in pure Rust
  • Released as a marjor version crate
  • Performant
  • Supports Redox

cons

  • Works on Unix systems only
  • Uses threads for reading resize events and input
  • Maintenance is limited
  • Limited Modifier support.
  • Fires thread to read input.
  • Fires thread to capture terminal resize events.
  • Uses stdout for terminal size
  • Uses /dev/tty and stdin for cursor position.

Crosscurses

feature flag: (crosscurses-backend)

pros

  • Based on ncurses and pdcurses.
  • Works crossplatform
  • Supports advanced event / modifier support.

cons

  • Depends on C ncurses library.
  • Maintenance is limited
  • Lacks some features (see above).
  • Uses /dev/tty by default, falls back to stdout if not supported. it is not possible to customize its buffer. Tough you do have full control over refreshing terminal screen.