GTK4 support

[JohnOberhauser]

Arch is using gnome 40 with gtk4 support now. It would be awesome if the oomox theme supported gtk4.

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actionless:

See Base16 plugin -> gtk4-oodwaita (https://github.com/themix-project/themix-plugin-base16/tree/master/templates_extra/gtk4-oodwaita/templates) as a quick placeholder solution

[actionless]

"it would be awesome" if somebody would send such a PR for sure:

from my own perspective is too raw and buggy right now to touch it -- for example on one of my machines on latest gtk4 version, gtk-widget-factory still keep crashing (probably due to vdpau handling bugs)

and til the time gtk4 will became stable -- they prolly change theming api few times, as they usually did in every gtk3 release til 3.20

so before investing any time into i first gonna wait when it will be both functionally- and api-stable enough

if you have a different opinion on this, you're free to invest into implementing it yourself, and share the results.

however, considering what not too many apps already moved to gtk4, you can just use Materia theme generated from the same Themix color palette, to visually match the environment

[JohnOberhauser]

yeah, I ended up using hacking materia to look similar-ish to oomox/numix. It ended up looking pretty good

[actionless]

not good enough for sharing the result though?

[actionless]

considering all weird things happening with GTK4 (i refer to recent libadwaita controversy):

i personally dont see much point investing time into it until theming api will became 1) documented; and 2) "changelog-able"

but as i mentioned before, PRs still will be accepted

[yavko]

There is a pretty easy way to theme libadwaita apps, though IMO supporting gtk4 for non libadwaita apps or other things would be great. I think there is more documentation on it though I'm not sure.

[actionless]

@yavko can't wait for that cool PR from you based on their robust documentation :D

[yavko]

@yavko can't wait for that cool PR from you based on their robust documentation :D

Even though I don't use oomox-gtk, but I'll do it! But idk how long it'll take 💀, so no guarantees

[actionless]

btw i actually tested latest versions of oomox-gtk3-theme and gtk4-widget-factory and it's aparently not so much fixes to do visually (at least from the first glance, mb in other places it all worse), but there are lots of theme parsing errors, due to some changes in gtk not clearly described in CHANGELOG.txt

and because(?) of these theme-parsing errors choosing the theme makes any application unusably slow, like 10FPS-ish

gtk3:

gtk4:

[actionless]

another option is to switch to libadwaita's css for gtk4, because by structure it's similar to materia but doesnt have any image assets to render - it's quite easy to use in Themix and visual changes from Oomox theme are notable but not really crucial:

[yavko]

I finally have time to try porting it myself, though as I said before I can't guarantee I will finish it at all lol