enum BackdropBridge
Swift
enum BackdropBridgeCompositor frost behind a popup. LavaUI cannot see the desktop, so a
client fills this in; a windowed app leaves it nil and .backdropBlur
samples this window's own framebuffer instead.
A panel dropdown is the case this exists for. In-window backdropBlur
captures this surface, and a panel's surface is empty below the strip
— frosting it would smear nothing. The compositor can see the wallpaper
and the windows under that rect, and this is how a popup asks it to.
Sources/LavaUI/Overlay.swift:313
Properties
nonisolated(unsafe) static var frostOverlays: (@Sendable (_ radius: Float, _ rects: [FrostRect]) -> Void)?Frost every rect in the list. An empty list, or radius 0, clears.
A list because a menu with a fly-out submenu beside it is two rectangles with desktop showing between them: one plate cannot be both, and their union would frost the gap.
Sources/LavaUI/Overlay.swift:339
Types
BackdropBridge.FrostRect struct
One rectangle to frost, in this surface's layout pixels. cornerRadius rounds the plate to match the popup sitting on it.