Converting between view coordinate systems - Example 2

Example2.swift

import Cocoa
import PlaygroundSupport

let frame = CGRect(origin: .zero,
                   size: .init(width: 150, height: 150))
let window = NSView(frame: frame)
window.wantsLayer = true
window.layer?.backgroundColor = NSColor.white.cgColor

let view = NSView(frame: CGRect(origin: .init(x: 25, y: 25),
                                size: CGSize(width: 100, height: 100)))
view.wantsLayer = true
view.layer?.backgroundColor = NSColor.green.withAlphaComponent(0.5).cgColor
window.addSubview(view)

let subview = NSView(frame: CGRect(origin: .init(x: 25, y: 25),
                                   size: .init(width: 50, height: 50)))
subview.wantsLayer = true
subview.layer?.backgroundColor = NSColor.blue.withAlphaComponent(0.5).cgColor
view.addSubview(subview)

let convertToWindow = subview.convert(subview.bounds, to: window)

// {x 25 y 25 w 50 h 50 }
subview.frame

// {x 50 y 50 w 50 h 50 }
convertToWindow

PlaygroundPage.current.needsIndefiniteExecution = true
PlaygroundPage.current.liveView = window