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Re: Implementing image support for kitty terminal
From: |
Jose A Ortega Ruiz |
Subject: |
Re: Implementing image support for kitty terminal |
Date: |
Wed, 07 Sep 2022 20:59:55 +0100 |
On Wed, Sep 07 2022, Tomas Hlavaty wrote:
> On Wed 07 Sep 2022 at 21:11, Eli Zaretskii <eliz@gnu.org> wrote:
>> In particular, the current model of image display
>> in the Emacs display engine is that an image is basically considered a
>> single very large character, from the screen layout POV.
>
> Are you talking about GUI emacs?
> Is that not different in tty emacs?
> I thought that the tty emacs has no concept of image (so far?).
>
>> I guess
>> that's not what you have in mind for the above, so IMO it's important
>> to come up with an alternative model that would somehow fit with the
>> current display code with only minor changes, if we want this not to
>> be too complex.
>
> For example, the tty based w3m web browser optionally supports images.
> It reserves space w*h chars on the tty and then uses external program
> to draw the image in the right place.
>
> I guess tty emacs would also need to reserve a w*h chars rectangle on
> the tty and then send the right escape code to fill that gap with the
> image.
>
> First, tty emacs would need to understand images instead of throwing
> error. At least their dimensions. Maybe using some library or even in
> elisp, for example like this
> https://logand.com/sw/emacs-framebuffer/file/emacs-framebuffer.el.html#l286
> I have not figured out, how to actually plug it into upstream emacs, as
> this seems to require a lot of changes to C code.
fwiw, in the kitty case, image libraries are going to be almost for sure
available, it being an x11/wayland application. so an emacs compiled
with image support (but not necessarily linking against any x libs)
doesn't seem like a strong requirement. in that scenario, determining
the size of an image wouldn't needed a lot of C code, would it? and, if
those libraries are not available, a call to "file foo.png" is (at least
in my system) telling me the size of foo.png... kind of hacky, of
course, but as a first step maybe good enough.
> Second, tty emacs would need to somehow reserve rectangle for the image.
> This might be lots of work I guess.
i was hoping this wouldn't be the case... at least when running inside
terminal emulators, emacs nox seems pretty dexterous lying out windows
and filly them with content, and i reckoned it must have a pretty good
idea of their sizes. but maybe i'm too optimistic :)
> Third, there would have to be a piece of code which actually draws the
> image. In case of kitty terminal, the image path and coordinates would
> be sent to the tty using the kitty terminal protocol.
(as an aside, this would also work for other terminals like konsole or
wayst, which support the protocol).
cheers,
jao
--
If we all think alike then nobody’s thinking at all.
- Re: Memory problems update, (continued)
- Re: Memory problems update (was: Implementing image support for kitty terminal), Eli Zaretskii, 2022/09/23
- Re: Memory problems update (was: Implementing image support for kitty terminal), Jose A Ortega Ruiz, 2022/09/23
- Re: Memory problems update (was: Implementing image support for kitty terminal), Eli Zaretskii, 2022/09/24
- Re: Memory problems update, Po Lu, 2022/09/24
- Re: Memory problems update, Jose A Ortega Ruiz, 2022/09/24
- Re: Implementing image support for kitty terminal, Po Lu, 2022/09/08
- Re: Implementing image support for kitty terminal, Jose A Ortega Ruiz, 2022/09/09
- Re: Implementing image support for kitty terminal,
Jose A Ortega Ruiz <=
- Re: Implementing image support for kitty terminal, Akib Azmain Turja, 2022/09/08
- Re: Implementing image support for kitty terminal, Jose A Ortega Ruiz, 2022/09/08
- Re: Implementing image support for kitty terminal, Tomas Hlavaty, 2022/09/08
- Re: Implementing image support for kitty terminal, Tomas Hlavaty, 2022/09/08
- Re: Implementing image support for kitty terminal, Eli Zaretskii, 2022/09/08
- Re: Implementing image support for kitty terminal, Tomas Hlavaty, 2022/09/08
- Re: Implementing image support for kitty terminal, Eli Zaretskii, 2022/09/09
- Re: Implementing image support for kitty terminal, Tomas Hlavaty, 2022/09/09
- Re: Implementing image support for kitty terminal, Akib Azmain Turja, 2022/09/08
- Re: Implementing image support for kitty terminal, Eli Zaretskii, 2022/09/08