Move Wayland specific env variables into Wayland startup script

zsh/.profile.d/runwm.sh

@@ -2,8 +2,37 @@
 
 if [ -z "$DISPLAY" ] && [ "$(tty)" = "/dev/tty1" ]; then
   if [ -n "$DBUS_SESSION_BUS_ADDRESS" ]; then
+    # XDG Wayland support
+    export XDG_CURRENT_DESKTOP=sway # Required for tray icons on waybar
+    export XDG_SESSION_TYPE=wayland # Session Type for later screensharing
+
+    # Force wayland on qt apps
+    export QT_QPA_PLATFORM=wayland
+    export QT_WAYLAND_DISABLE_WINDOWDECORATION=1
+
+    # Explicitly set to '96' instead of 'physical' because some apps have problems
+    # Looking at you nextcloud client!
+    # https://github.com/nextcloud/desktop/issues/1079
+    # https://github.com/swaywm/sway/issues/2424
+    export QT_WAYLAND_FORCE_DPI=96
+
+    # Mozilla Wayland support + hardware video decoding
+    export MOZ_ENABLE_WAYLAND=1
+    export MOZ_WAYLAND_USE_VAAPI=1
+
+    # Reduces crashs for some gdk apps, like evolution
+    # ! Do not set as global variable. Electron Apps will not start !
+    # export GDK_BACKEND=wayland
+
+    # SDL
+    export SDL_VIDEODRIVER=wayland
+
+    # Java under Xwayland
+    export _JAVA_AWT_WM_NONREPARENTING=1
+
+    # Launch Sway through dbus
     exec dbus-run-session sway
   else
-    echo "Cannot found dbus session: Sway don't work"
+    echo "Cannot found DBus session, Wayland startup failed"
   fi
 fi