Embed

/// Embed a View to certain anchors (top, bottom, leading, trailing)
/// - Parameters:
///     - withPadding: The amount of space between the embedded view and this view
///     - closure: A trailing closure that accepts a view
@discardableResult
func embed(withPadding padding: [Padding],
           _ closure: () -> NSView) -> Self {
    let viewToEmbed = closure()
    viewToEmbed.translatesAutoresizingMaskIntoConstraints = false
    addSubview(viewToEmbed)
    
    NSLayoutConstraint.activate(
        padding.map {
            switch $0 {
            case .leading(let constant):
                return viewToEmbed.leadingAnchor.constraint(equalTo: leadingAnchor, constant: CGFloat(constant))
            case .trailing(let constant):
                return viewToEmbed.trailingAnchor.constraint(equalTo: trailingAnchor, constant: CGFloat(-constant))
            case .top(let constant):
                return viewToEmbed.topAnchor.constraint(equalTo: topAnchor, constant: CGFloat(constant))
            case .bottom(let constant):
                return viewToEmbed.bottomAnchor.constraint(equalTo: bottomAnchor, constant: CGFloat(-constant))
            }
        }
    )
    
    return self
}

Stack

/// Embed a Stack
/// - Parameters:
///     - withSpacing: The amount of spacing between each child view
///     - padding: The amount of space between this view and its parent view
///     - alignment: The layout of arranged views perpendicular to the stack view’s axis (source: NSStackView.Alignment)
///     - distribution: The layout that defines the size and position of the arranged views along the stack view’s axis (source: NSStackView.Distribution)
///     - axis: Keys that specify a horizontal or vertical layout constraint between objects (source: NSUserInterfaceLayoutOrientation)
///     - closure: A trailing closure that accepts an array of views
@discardableResult
func stack(withSpacing spacing: Float = 0,
           padding: [Padding],
           alignment: NSLayoutConstraint.Attribute = .top,
           distribution: NSStackView.Distribution = .fill,
           axis: NSUserInterfaceLayoutOrientation,
           _ closure: () -> [NSView?]) -> Self {
    let viewsInVStack = closure()
        .compactMap { $0 }
    
    let stackView = NSStackView(views: viewsInVStack)
    stackView.spacing = CGFloat(spacing)
    stackView.alignment = alignment
    stackView.distribution = distribution
    stackView.orientation = axis
    
    embed(withPadding: padding) {
        stackView
    }
    
    return self
}

SwiftAK Example

import Cocoa
import SwiftAK

class ViewController: NSViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        view.center {
            NSView().vstack {
                [
                    
                    NSView(backgroundColor: .red)
                        .frame(height: 100, width: 100)
                        .padding()
                        .background(color: .yellow),
                    
                    NSText()
                        .configure {
                        $0.string = "Hello World!"
                    }
                    .background(color: .blue)
                    .frame(height: 60, width: 100)
                ]
            }
        }
    }
}