notcurses
jexer
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notcurses
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Text UIs != Terminal UIs
> The only reason we don't have animation frameworks for the terminal is because it's not possible
- Notcurses: Blingful character graphics/TUI library
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good high-level ncurses library
Notcurses. Install it and run notcurses-demo to be suitably impressed.
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Ratatui: Build rich terminal user interfaces
Same for me, I would be much more motivated if there was something like textual for Rust. Given the capability of terminal emulators now I think Rust is lacking behind in the TUI field. Just checkout what can be done with something like notcurses
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Doom on Teletext
Other TUI libraries of note: https://github.com/dankamongmen/notcurses/blob/master/doc/OT...
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Io Uring
The broader world probably knows him best for the terminal handling library Notcurses[1] and a lot of telling terminal emulator authors to get their shit together.
I’ve had his grad-school project libtorque[2] (HotPar ’10), an event-handling and scheduling library, on my to-read list for years, but I can’t seem to figure out how it accomplishes the interesting things it does.
[1] https://nick-black.com/dankwiki/index.php/Notcurses, https://github.com/dankamongmen/notcurses/
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Are We Sixel Yet
In XTerm, this (rightly) makes no difference. In Foot and Contour however, you still end up a line resp. a screen below where you started, if now with the correct horizontal position.
So it seems to me like what you want should work by default, except it doesn’t.
It should be possible to instead just treat the whole thing as a graphical overlay (by computing or directly asking for the character cell size, as Kirill Panov rightly admonishes me is possible with XTWINOPS) without touching the cursor; that’s what the “sixel scrolling” setting (DECSDM) is supposed to do. Then you can just manually move the cursor forward however many positions after you’re done drawing.
Except apparently the DEC manual (the VT330/340 one above) and DEC hardware contradict each other as to which setting of DECSDM (set or reset) corresponds to which scrolling state (enabled or disabled), and XTerm has implemented it according to the manual not the VT3xx[1,2,3]—then most other emulators followed suit[4]—then XTerm switched to following the hardware[5,6] (unless you and that’s what I’m seeing on my machine right now. So now you need to check if you’re on XTerm ≥ 369 or not[7]. If I’m reading the Notcurses code right, other terminals have followed suit[8].
Again, ouch.
P.S. It seems DEC had an internal doc for how their terminals should operate (DEC STD 070) [9]. It does not document DECSDM at all.
[1] https://github.com/wez/wezterm/issues/217#issuecomment-86449...
[2] https://github.com/hackerb9/lsix/issues/41
[3] https://github.com/dankamongmen/notcurses/issues/1782
[4] https://github.com/arakiken/mlterm/pull/23
[5] https://invisible-island.net/xterm/xterm.log.html#xterm_369
[6] https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-T...
[7] https://github.com/dankamongmen/notcurses/commit/0918fa251e2... (the correct version cutoff is 369 not 359, the patch contains a now-fixed bug)
[8] https://github.com/dankamongmen/notcurses/blob/master/src/li... (look for mentions of invertsixel)
[9] http://www.bitsavers.org/pdf/dec/standards/EL-SM070-00_DEC_S...
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smenu clean window effect
And there's also the notcurses library:
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baca: TUI ebook reader
notcurses
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Sharing Saturday #453
Once I have finished documenting all of the existing API functions and structs, I will begin work on terminal rendering. While the API surface area will only be slightly increased (a single function to set some flags) the actual work will mean building a parallel renderer for both Linux and Windows. I will be looking into notcurses to see if it can make my life easier in this regard.
jexer
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Qubes Tricks
Very interesting! I was thinking literally yesterday about a TUI/GUI Qubes type concept, maybe also applicable for industrial type data diodes.
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Show HN: Java TUI framework with sixel image support
If you code in Java, and like TUI (console type applications), then you might enjoy Jexer: https://gitlab.com/klamonte/jexer
I started Jexer in 2013, and off-and-on it's gotten better. I think my favorite part has been crossing paths with other terminal emulator ecosystem folks over the last few years. This release brings a few prettified effects inspired by other projects that you are all hopefully quite familiar with (notcurses, chafa, and vtm):
* Translucent windows, including images under/over each other and text.
* Animated/pulsing text
* Animated gifs
* A new XtermVideoPlayer example that uses ffmpeg/JavaCV to play movies inside a text-draggable window. (No audio though.)
* New button styles: round, diamond, left/right arrows. The button ends and shadows are drawn with images so specific font support is not required.
* A _much_ faster and _much_ higher quality sixel encoder.
* Different window border styles: single, double, none, and rounded corners.
* A femme theme option.
Some screenshots are posted here: https://twitter.com/AutumnMeowMeow/status/148922891703050240...
It's on maven and Sourceforge.
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So did y'all know that SyncTERM 1.1 has sixel support? That's so cool!
A path that started in the BBS era and is currently bringing DOOM to Xterm. And ironically, there is much better support for this now than there ever was for RIPscript.
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I'm working on a commandline app that plays videos, any feedback is welcome
I am working on making DOOM run inside sixel-supporting terminals. The data load is actually small, only 70-300 kbytes/sec. You don't need a GPU at all on the terminal end just for pixels.
Story time: when I first posted Jexer to Reddit, people were all "twin does that". No, it does not. twin does not pass vttest. twin has almost no widgets. twin does not support images at all, it does not multiplex images, it does not multihead images, and it does not play videos (a bit too slowly but still) in a text draggable/resizable window that could be part of a larger system. mpv/mplayer doesn't do those things either. In fact, the only two projects I know of that can do these kinds of tricks are Jexer and notcurses. (And notcurses is hella faster and great, and I would have used it in 2013 when I started Jexer, but it didn't exist then.)
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Terminal Technical Resources
One way to do translucent windows. - Inspired by notcurses
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Why are kitty and alacritty so popular? Where's the foot love?
foot is great, dnkl is great. It's so far the fastest sixel-supporting terminal I've got to test XtermDOOM on. (I run iTerm2-based images against wezterm.)
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Display images in the terminal
It parses them, but then reduces to the 8/16 ANSI colors. Which makes translucent TUI windows not work. :(
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I looking for a TUI liberary/framework with good aesthetics.
Jexer has almost no userbase, but is a full-fledged windowing system with advanced support for images and multiplexed terminals. Java. You might find the history doc interesting, it has quite a few links to other projects and standards. (Disclaimer: I wrote Jexer.)
What are some alternatives?
rich - Rich is a Python library for rich text and beautiful formatting in the terminal.
FTXUI - Features: - Functional style. Inspired by [1] and React - Simple and elegant syntax (in my opinion). - Support for UTF8 and fullwidth chars (→ 测试). - No dependencies. - Cross platform. Linux/mac (main target), Windows (experimental thanks to contributors), - WebAssembly. - Keyboard & mouse navigation. Operating systems: - linux emscripten - linux gcc - linux clang - windows msvc - mac clang
xterm.js - A terminal for the web
sixvid - Simple script for animated GIF viewing using sixels
tcell - Tcell is an alternate terminal package, similar in some ways to termbox, but better in others.
awesome-tuis - List of projects that provide terminal user interfaces
python-prompt-toolkit - Library for building powerful interactive command line applications in Python
sixel-tmux - sixel-tmux is a fork of tmux, with just one goal: having the most reliable support of graphics
magma-nvim - Interact with Jupyter from NeoVim.
dashing - Terminal dashboards for Python
FINAL CUT - A text-based widget toolkit.
alacritty - A cross-platform, OpenGL terminal emulator.