Converting applets to support Wayland

[fossfreedom]

This is a tracking issue to focus on supporting wayland for budgie-extras applets and apps. All help is welcome

libxfce4windowing may help with the transition (python support via its gir python package, or using a vala vapi as per budgie-desktop). Similarly we need to look at layer-shell for positioning things https://github.com/wmww/gtk-layer-shell

Remember at a minimum all applets including 3rd party applets need to use budgie-2.0 as the target gir

Edit this issue and amend:

• Add meson_option compile option for wayland - default for the moment is X11 Converting applets to support Wayland #474 (comment)
• budgie visualspace: wnck ref + upstream workspace support
• budgie dropby: wnck ref
• budgie shuffler: Needs focus on across the codebase / working with upstream
• budgie wpreviews: Needs focus on across the codebase / working with upstream
• budgie wswitcher: wnck ref + upstream workspace support
• budgie workspace stopwatch: wnck ref
• budgie showtime: wnck ref - needs gtklayershell
• budgie weather: needs gtklayershell
• budgie-quickchar: x11 reference and needs upstream shortcut support
• budgie-extras-daemon - global keyboard shortcuts are going to be handled very differently under wayland
• budgie-applauncher: popover.set_default_size no longer exists as an api function
• budgie-takeabreak: xrandr usage / Gdk.Display is used to get output names
• budgie-brightness-controller - that uses xrandr which is X11 specific - so need to consider alternatives possibly like wrandr applet now just shows one bar under wayland
• budgie-countdown - this depends on settings-daemon power values - this maybe different in a wayland world
• budgie-rotation-lock - this depends on gnome-settings-daemon stuff ... not sure if mutter related stuff is involved
• budgie-keyboard-autoswitch - makes use of xdotool to get wmclass

All applets need testing under wayland - there will probably be others that need to be added to the above list.

To be tested:

• budgie-applications-menu
• budgie-clockworks
• budgie-fuzzy-clock
• budgie-kangaroo - it isn't using a popover - expecting a menu to be displayed - this works with the popover was a window... but now its a gtk-popover - tweaked so the menu pops up at the correct location but still should probably be revisited [Wayland] Kangaroo applet menu extends off-screen on long menus #475
• budgie-network-manager
• budgie-quicknote
• budgie-recently-used
• budgie-common
• budgie-wallstreet note - needs upstream support for the lockscreen and setting the image from the gsettings key

Additional applets outside of extras

• budgie-indicator-applet

Additional considerations:

• popovers in python applets appear transparent when built-in theme is selected appears to be resolved

[fossfreedom]

I'll take the first item to add an option to compile applets with a wayland option. For the initial release all the applets/applications above will NOT be compiled and thus NOT available under wayland. Once support is available we can add in the applet.

[fossfreedom]

meson option "for-wayland" is to be used within meson to differentiate between wayland and X11 specific compilation options.

budgie_dep is defined at the root meson.build level - so any applets should use this now in their specific meson.build rather than hardcode budgie-1.0

python apps should use this format to differentiate between v2 and v1 gir

budgie-extras/budgie-app-launcher/src/budgie-app-launcher/AppLauncherApplet.py

Line 19 in 1e9ae39

if Libxfce4windowing.windowing_get() == Libxfce4windowing.Windowing.WAYLAND:

similar code could/showed by used for vala compilation ... and/or we can consider a config type #ifdef type way of doing things