# SIXEL Library for Haskell

SIXEL, short for "six pixels", is a bitmap graphics format supported by terminals and printers from DEC. 
It can show graphics in a terminal emulator.

[libsixel](https://saitoha.github.io/libsixel/) provides various demos using SIXEL.

This library is developed for displaying images on ghci.

# Usage

This library provides "Show-intances of Sixel-Commands" and "ToSixel type class to change image data into Sixel-Cmmands".
To render image data on ghci, just run 'toSixel image-data'.
'putImage' is a wrapper of "readImage 'image-file' >>= putStr.show.toSixel".

See following demo.

![demo](https://raw.githubusercontent.com/junjihashimoto/sixel/master/demo.png)

# Terminal requirements

For using sixel, see terminal requirements of [libsixel](https://saitoha.github.io/libsixel).

This library supports OSC-1337, too.
OSC-1337 is available for iterm2 and [hterm of crostini](https://chromium.googlesource.com/apps/libapps/+/master/hterm).

![demo](https://raw.githubusercontent.com/junjihashimoto/sixel/master/demo-osc1337.png)

# References

* https://en.wikipedia.org/wiki/Sixel
* https://saitoha.github.io/libsixel
* https://chromium.googlesource.com/apps/libapps/+/master/hterm/doc/ControlSequences.md#OSC-1337
* https://www.iterm2.com/documentation-escape-codes.html