How calc's autofilter looks today under gtk3 + wayland in trunk towards LibreOffice 7.4
GTK4 port of Libreoffice now supports the "widebutton" Toolbar MenuButtons that show a preview of the selected color.
In GTK4 the dedicated GtkToolbar is gone, replaced by GtkBox with a style of "toolbar". The spelling dialog now supports this conversion.
More MenuButton features working under GTK4. Now with working radio entries in GtkPopoverMenu dropdowns.
More progress, Entries, SpinButtons, PushButtons, CheckBoxes/RadioButtons, TreeViews and basic Notebooks and DrawingAreas working in the GTK4 port
Early days yet, but here's some screenshots of an experimental port of LibreOffice to GTK4 I've commited upstream during the week. It starts without crashing, renders, accepts user keystrokes and mouse events, basic Input Method support also works.
Standard GTK file dialog functionality works.
Standard GTK message dialogs work.
Context menus, now using Popover Menus, work.
Toplevel Menubar and menus, via gtk_popover_menu_bar_new_from_model, are also functional.
Working sample native GTK dialog. A work in progress, my current thinking is with GtkButtonBox gone that moving the old action area contents to the dialogs GtkHeaderBar seems the easiest route.