Re: [E-devel] [Terminology] Cooperative tiling between Terminology and hosted programs

Cedric Bail <[email protected]> Mon, 06 Feb 2023 16:54:11 +0000

Newsgroups	gmane.comp.window-managers.enlightenment.devel
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On Thursday, February 2nd, 2023 at 2:44 PM, Boris Faure <[email protected]> wrote:
> On 23-01-29 05:53, Vinícius dos Santos Oliveira wrote:
> > in my mind, Terminology tries to push the boundaries of what's possible
> > with terminal emulators forward. For instance, it has support for embedding
> > videos and images through custom escape sequences. It obviously expects
> > programs will make use of the new Terminology features.
> > 

> > It just occurred to me that programas could cooperate with Terminology to
> > make their own custom tiling. For instance, Emacs has the eshell mode where
> > Emacs acts as its own terminal emulator taking care of interpreting ANSI
> > escape sequences and tiling the embedded terminal in its own window all by
> > itself.
> > 

> > What if Terminology exposed an env var such as
> > TERMINOLOGY_SOCK=$XDG_RUNTIME_DIR/sock-1234.sock with a path for a UNIX
> > socket so the program (such as Emacs) could open it to cooperate with
> > Terminology? Emacs could open a new pty, spawn the embedded shell, and send
> > a fd to the master end of the new pty back to Terminology. The message
> > should include the position in the screen for the new embedded terminal.
> > Now Terminology would only read from the master end so it can draw the
> > contents of the embedded terminal appropriately in the new tile of the
> > terminal window. Emacs would still get all the input as usual and only send
> > input to the new terminal as it pleases (by writing in the master end of
> > the pty).
> > 

> > So, Terminology already decodes ANSI escape sequences and performs tiling
> > of terminal windows. The idea is to let applications reuse this
> > implementation to allow further embedding other interactive programs in
> > their own windows.
> > 

> > Thoughts?
> 

> That's some interesting thoughts. Terminology already has some custom
> escape codes. I would go that way to have interaction with an external
> program. There's no escape codes to handle the tiling, since those
> could also be used to DDOS terminology, but that's something could be
> thought about.

I like silly idea in my terminal :-) Maybe a first step is to allow running application in terminology. It would be possible using Wayland and Efl.Canvas.Wl to embedded one application. I wonder if it would be possible to have the terminal provide a WL_DISPLAY on a request so we can embedded an application?

https://git.enlightenment.org/enlightenment/efl/src/branch/master/src/lib/efl_canvas_wl

Have fun!
  Cedric

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