Blur view for macOS

Blur.swift

import SwiftUI

#if os(macOS)

import AppKit

struct Blur: NSViewRepresentable {
	fileprivate var blending: NSVisualEffectView.BlendingMode
	fileprivate var style: NSVisualEffectView.Material
	
	init(
		blending: NSVisualEffectView.BlendingMode = .behindWindow,
		style: NSVisualEffectView.Material = .fullScreenUI
	) {
		self.blending = blending
		self.style = style
	}
	
	func makeNSView(context: Context) -> NSVisualEffectView {
		let view = NSVisualEffectView()
		view.blendingMode = blending
		view.material = style
		view.state = .followsWindowActiveState
		return view
	}
	
	func updateNSView(_ nsView: NSVisualEffectView, context: Context) {
		nsView.blendingMode = blending
		nsView.material = style
	}
}

extension Blur: KeyPathEditable {
	func effectBlending(_ blending: NSVisualEffectView.BlendingMode) -> Self {
		var copy = self
		copy.blending = blending
		return copy
	}
	
	func effectStyle(_ style: NSVisualEffectView.Material) -> Self {
		var copy = self
		copy.style = style
		return copy
	}
}

#endif