SwiftUI Color Extension

ConvenientColors.swift

//
//  ConvenientColors.swift
//
//  Created by Clarko on 7/15/20.
//
//  Color.primary and Color.secondary are great for foreground text
//  that adapts in light & dark mode, but there are a lot more
//  UI Element Colors in iOS and macOS:
//
//  https://developer.apple.com/documentation/uikit/uicolor/ui_element_colors
//
//  https://developer.apple.com/documentation/appkit/nscolor/ui_element_colors
//
//  Here are my shortcuts to a handful of common colors,
//  with idiomatic names.

import SwiftUI

extension Color {
    #if os(iOS)

    // Foreground
    static var tertiary: Color {
        Color(.tertiaryLabel)
    }

    // Backgrounds
    static var primaryBackground: Color {
        Color(.systemBackground)
    }
    static var secondaryBackground: Color {
        Color(.secondarySystemBackground)
    }
    static var tertiaryBackground: Color {
        Color(.tertiarySystemBackground)
    }

    // GroupedListStyle and Form Backgrounds
    static var primaryGroupedBackground: Color {
        Color(.systemGroupedBackground)
    }
    static var secondaryGroupedBackground: Color {
        Color(.secondarySystemGroupedBackground)
    }
    static var tertiaryGroupedBackground: Color {
        Color(.tertiarySystemGroupedBackground)
    }

    #elseif os(macOS)

    // Foreground
    static var tertiary: Color {
        Color(.tertiaryLabelColor)
    }

    // Backgrounds
    static var primaryBackground: Color {
        Color(.textBackgroundColor)
    }

    #endif
}