ghostty/macos/GhosttyUITests/AppKitExtensions.swift

//
//  AppKitExtensions.swift
//  Ghostty
//
//  Created by luca on 27.10.2025.
//

import AppKit

extension NSColor {
    var isLightColor: Bool {
        return self.luminance > 0.5
    }

    var luminance: Double {
        var r: CGFloat = 0
        var g: CGFloat = 0
        var b: CGFloat = 0
        var a: CGFloat = 0

        guard let rgb = self.usingColorSpace(.sRGB) else { return 0 }
        rgb.getRed(&r, green: &g, blue: &b, alpha: &a)
        return (0.299 * r) + (0.587 * g) + (0.114 * b)
    }
}

extension NSImage {
    func colorAt(x: Int, y: Int) -> NSColor? {
        guard let cgImage = self.cgImage(forProposedRect: nil, context: nil, hints: nil) else {
            return nil
        }
        return NSBitmapImageRep(cgImage: cgImage).colorAt(x: x, y: y)
    }
}