Draft: Port to GTK4+Libadwaita

[jannuary]

Very hacky and incredibly broken so far.

TODO/FIX:

• [ ] Search doesn't work
• On the topic of the search entry, GTK4 doesn't accept attaching popovers to arbitary widgets, so that should also be figured out.
• Furthermore, the input is broken right now in GNOME SDK/Platform, so I can't even test it
• [ ] Table of contents is empty
• [ ] Language picker doesn't work
• [ ] Preferences dialog doesn't work
• This requires porting away from Hdy.ValueObject.
• [ ] Crashes on right click
• [x] About dialog doesn't work
• [ ] Cannot add bookmark
• [ ] Use GdkClipboard
• [ ] Stop destroying widgets
• [x] Window title isn't set properly
• [ ] Stop using gtk-application-prefer-dark-theme, opt-in to dark style preference (needs design)
• [ ] Webview is invisible in dark mode

[hugolabe]

Thanks for your work @jannuary !

Maybe you should have let me know earlier as I've been working on Wike 2 for a while.

Wike 2 is not just a port to GTK4, it represents a major change in the UI design. The most important changes include a new sidepanel for TOC, langlinks, and bookmarks. In addition, the search entry is always visible and the interface is responsive.

There are still things that don't work, like dark mode, right click ... But keep in mind that both libadwaita and webkit are still unstable versions.

[jannuary]

Well that's awkward 😅

I'll be closing this PR now, I enjoyed working on it, but it's not really needed as it seems.

Furthermore, do you mind pushing a Wike 2 branch and/or a PR for it?

[hugolabe]

Yes, once I have fixed some details, I could upload it to a branch in the near future.