termimg draws images into terminals. This repository includes the termimg library and the timg cli tool which can be used in shell scripts.
This module is still experimental. Most parts need more testing on platforms other than my own (Debian stable, X11). The API of some unfinished packages will change. There are still many small issues to be fixed. Please report them.
Images are being placed by using cell not pixel coordinates. (The origin is the upper left terminal corner just like with image.Image.) The latter doesn't make sense in the context of a terminal. termimg is able to fit images into cell boundaries while preserving their aspect ratio.
termimg implements several drawing methods: sixel, iTerm2, kitty, Terminology, DomTerm, urxvt, X11, GDI+, block characters - by default the most appropriate one will be chosen.
termimg is highly modular, most parts are exchangeable. Multiple term.TTY implementations exist for tty libraries used in common TUI frameworks.
The root package "termimg" contains an easy to use high-level API with a lot of default dependencies. Direct usage of the core package "/term" is recommended for more control and nearly no external dependencies. The "/drawers/sane" drawer collection will only use actual drawing methods, "/drawers/all" will try to produce an image by any means.
installation:
GOEXPERIMENT=rangefunc go install github.com/srlehn/termimg/cmd/timg@masterusage:
$ timg timg display terminal graphics Usage: timg [flags] timg [command] Available Commands: completion Generate the autocompletion script for the specified shell help Help about any command list list images properties list terminal properties query query terminal resolution print terminal resolution scale fit pixel area into a cell area while maintaining scale show display image Flags: -d, --debug debug errors -h, --help help for timg -l, --log-file string log file -s, --silent silence errors Use "timg [command] --help" for more information about a command.
The
list
command displays thumbnails of previewable files for a given directory similar to "lsix":timg list ~/Pictures
The
show
command draws the image in the current terminal:timg show -p 10,10,15x15 picture.pngCell coordinates are optional for the show command, they are passed in this format:
<x>,<y>,<w>x<h>
where x is the column, y the row, w the width and h the height.If an error occurs the
--debug/-d
flag shows where in the code it happens.The
runterm
command starts the terminal specified with the-t
flag. If no drawer is enforced by the optional-d
flag, the best fitting one is used. This command is meant for testing purposes.timg -d runterm -t mlterm -d sixel -p 10,10,15x15 picture.png
import ( _ "github.com/srlehn/termimg/drawers/all" _ "github.com/srlehn/termimg/terminals" ) func main(){ defer termimg.CleanUp() _ = termimg.DrawFile(`picture.png`, image.Rect(10,10,40,25)) }
For repeated image drawing create a term.Image via the NewImage…() functions. This allows caching of the encoded image.
import ( _ "github.com/srlehn/termimg/drawers/all" _ "github.com/srlehn/termimg/terminals" ) func main(){ tm, _ := termimg.Terminal() defer tm.Close() timg := termimg.NewImageFileName(`picture.png`) _ = tm.Draw(timg, image.Rect(10,10,40,25)) }
import ( _ "github.com/srlehn/termimg/drawers/sane" _ "github.com/srlehn/termimg/terminals" ) func main(){ wm.SetImpl(wmimpl.Impl()) opts := []term.Option{ term.SetLogFile(`termimg.log`, true), term.SetPTYName(`dev/pts/2`), term.SetTTYProvider(gotty.New, false), term.SetQuerier(qdefault.NewQuerier(), true), term.SetWindowProvider(wm.SetImpl(wmImplementation), true), term.SetResizer(&rdefault.Resizer{}), } tm, err := term.NewTerminal(opts...) if err != nil { log.Fatal(err) } defer tm.Close() var img image.Image // TODO load image timg := termimg.NewImage(img) if err := tm.Draw(timg, image.Rect(10,10,40,25)); err != nil { log.Fatal(err) } }The default options are packed together in
termimg.DefaultConfig
.