vty is a terminal interface library.
Vty currently provides:
-
Automatic handling of window resizes.
-
Supports Unicode characters on output, automatically setting and
resetting UTF-8 mode for xterm. Other terminals are assumed to support -
Efficient output.
-
Minimizes repaint area, thus virtually eliminating the flicker
problem that plagues ncurses programs. -
A pure, compositional interface for efficiently constructing display
images. -
Automatically decodes keyboard keys into (key,[modifier]) tuples.
-
Automatically supports refresh on Ctrl-L.
-
Automatically supports timeout after 50ms for lone ESC (a barely
noticable delay) -
Interface is designed for relatively easy compatible extension.
-
Supports all ANSI SGR-modes (defined in console_codes(4)) with
a type-safe interface. -
Properly handles cleanup.
Current disadvantages:
-
The character encoding of the output terminal is assumed to be UTF-8.
-
Minimal support for special keys on terminals other than the
linux-console. (F1-5 and arrow keys should work, but anything
shifted isn't likely to.) -
Uses the TIOCGWINSZ ioctl to find the current window size, which
appears to be limited to Linux and *BSD.
Project is hosted on github.com: https://github.com/coreyoconnor/vty
git clone git://github.com/coreyoconnor/vty.git
To compile the demonstration program: ghc --make test/Test.hs gwinsz.c
The main documentation consists of the haddock-comments and the demonstration
program