The Wallpaper background blurred the desktop behind the window by a fixed
0.75. Its options box in Settings > Appearance now has a Wallpaper blur
slider, shown for that mode only, from 0 % to 100 %: Qt's documented range
for MultiEffect.blur, 0.0 (no blur) to 1.0 (full blur), at the field's
blurMax of 64. The default stays 0.75, the look the mode shipped with.
Dragging moves the live background through QbzShell.wallpaperBlur; the
value is written to ui_prefs once, on release (the slider's `released`),
as a two-decimal number, and clamped to Qt's range on read. The Wallpaper,
blurred mode keeps its fixed atmosphere look.
The label and description are in all eight catalogs.
cc
vicrodh
cca779924d