Fixes#2354
Root cause (tray freeze): In clickThrough mode, the PanelWindow mask uses
sectionRect() with mapToItem() to compute input regions. After DPMS resume,
the PanelWindow is recreated with width=0, and mapToItem() returns wrong
positions. The right section's implicitWidth doesn't change after creation
(fixed-size tray icons), so the mask binding is never re-evaluated when the
compositor sets the actual screen width. Adding barWindow.width as a binding
dependency ensures the mask recalculates on resize.
Root cause (wallpaper loss): Wallpaper PanelWindows are recreated by Variants
during screen reconnection before the compositor finishes output initialization.
The wallpaper Image renders at 0x0 dimensions, resulting in a black screen.
Changes:
- DankBarWindow: add barWindow.width dependency to clickThrough mask bindings
- DMSShell: add surface recovery mechanism (screen reconnect + session resume)
with progressive 2-pass timer (800ms + 2800ms) that recreates bar, Frame,
wallpaper, and dock surfaces after the compositor is ready
- WlrOutputService: re-request output state on session resume
The display config UI only applied changes for compositors with a
config-file backend (niri, hyprland, dwl). For any other compositor
that supports wlr-output-management-unstable-v1 the "Apply Changes"
button was silently a no-op.
Add WlrOutputService.applyOutputsConfig() as a high-level apply that
mirrors the generateOutputsConfig() pattern of the existing services
but applies directly via the protocol instead of writing a config file.
Route the default case in backendWriteOutputsConfig() to it.
This enables using dms-shell as a wayland compositor for emacs wayland
manager (ewm).
Feng Yu