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// Copyright © 2015 Abhishek Banthia
import Cocoa
extension Notification.Name {
static let themeDidChangeNotification = Notification.Name(rawValue: "ThemeDidChangeNotification")
}
class Themer: NSObject {
// Adding a new theme should automatically cause the compiler to complain asking to make the switches in this class to be more exhaustive
enum Theme: Int {
case light = 0
case dark
case system
case solarizedLight
case solarizedDark
}
private static var sharedInstance = Themer(index: UserDefaults.standard.integer(forKey: CLThemeKey))
private var effectiveApperanceObserver: NSKeyValueObservation?
private var themeIndex: Theme {
didSet {
NotificationCenter.default.post(name: .themeDidChangeNotification, object: nil)
}
}
init(index: Int) {
switch index {
case 0:
themeIndex = Theme.light
case 1:
themeIndex = Theme.dark
case 2:
themeIndex = Theme.system
case 3:
themeIndex = Theme.solarizedLight
case 4:
themeIndex = Theme.solarizedDark
default:
themeIndex = Theme.light
}
super.init()
setAppAppearance()
DistributedNotificationCenter.default.addObserver(self,
selector: #selector(respondToInterfaceStyle),
name: .interfaceStyleDidChange,
object: nil)
if #available(macOS 10.14, *) {
effectiveApperanceObserver = NSApp.observe(\.effectiveAppearance) { _, _ in
NotificationCenter.default.post(name: .themeDidChangeNotification, object: nil)
}
}
}
}
extension Themer {
class func shared() -> Themer {
return sharedInstance
}
func set(theme: Int) {
if themeIndex.rawValue == theme {
return
}
switch theme {
case 0:
themeIndex = Theme.light
case 1:
themeIndex = Theme.dark
case 2:
themeIndex = Theme.system
case 3:
themeIndex = Theme.solarizedLight
case 4:
themeIndex = Theme.solarizedDark
default:
themeIndex = Theme.light
}
setAppAppearance()
}
@objc func respondToInterfaceStyle() {
OperationQueue.main.addOperation {
self.setAppAppearance()
}
}
// MARK: Color
func sliderKnobColor() -> NSColor {
switch themeIndex {
case .light, .solarizedLight:
return NSColor(deviceRed: 255.0, green: 255.0, blue: 255, alpha: 0.9)
case .dark, .solarizedDark:
return NSColor(deviceRed: 0.0, green: 0.0, blue: 0, alpha: 0.9)
case .system:
return retrieveCurrentSystem() == .light ? NSColor(deviceRed: 255.0, green: 255.0, blue: 255, alpha: 0.9) : NSColor(deviceRed: 0.0, green: 0.0, blue: 0, alpha: 0.9)
}
}
func sliderRightColor() -> NSColor {
switch themeIndex {
case .dark:
return NSColor.white
case .system:
return retrieveCurrentSystem() == .dark ? NSColor.white : NSColor.gray
default:
return NSColor.gray
}
}
func mainBackgroundColor() -> NSColor {
if #available(macOS 10.14, *) {
switch themeIndex {
case .light:
return NSColor.white
case .dark:
return NSColor(deviceRed: 42.0 / 255.0, green: 42.0 / 255.0, blue: 42.0 / 255.0, alpha: 1.0)
case .system:
return retrieveCurrentSystem() == .light ? NSColor.white : NSColor.windowBackgroundColor
case .solarizedLight:
return NSColor(deviceRed: 253.0 / 255.0, green: 246.0 / 255.0, blue: 227.0 / 255.0, alpha: 1.0)
case .solarizedDark:
return NSColor(deviceRed: 7.0 / 255.0, green: 54.0 / 255.0, blue: 66.0 / 255.0, alpha: 1.0)
}
}
return themeIndex == .light ? NSColor.white : NSColor(deviceRed: 55.0 / 255.0, green: 71.0 / 255.0, blue: 79.0 / 255.0, alpha: 1.0)
}
func textBackgroundColor() -> NSColor {
if #available(macOS 10.14, *) {
switch themeIndex {
case .light:
return NSColor(deviceRed: 241.0 / 255.0, green: 241.0 / 255.0, blue: 241.0 / 255.0, alpha: 1.0)
case .dark:
return NSColor(deviceRed: 42.0 / 255.0, green: 55.0 / 255.0, blue: 62.0 / 255.0, alpha: 1.0)
case .system:
return retrieveCurrentSystem() == .light ? NSColor(deviceRed: 241.0 / 255.0, green: 241.0 / 255.0, blue: 241.0 / 255.0, alpha: 1.0) : NSColor.controlBackgroundColor
case .solarizedLight:
return NSColor(deviceRed: 238.0 / 255.0, green: 232.0 / 255.0, blue: 213.0 / 255.0, alpha: 1.0)
case .solarizedDark:
return NSColor(deviceRed: 0.0 / 255.0, green: 43.0 / 255.0, blue: 54.0 / 255.0, alpha: 1.0)
}
}
return themeIndex == .light ?
NSColor(deviceRed: 241.0 / 255.0, green: 241.0 / 255.0, blue: 241.0 / 255.0, alpha: 1.0) :
NSColor(deviceRed: 42.0 / 255.0, green: 55.0 / 255.0, blue: 62.0 / 255.0, alpha: 1.0)
}
func mainTextColor() -> NSColor {
if #available(macOS 10.14, *) {
switch themeIndex {
case .light:
return NSColor.black
case .dark:
return NSColor.white
case .system:
return NSColor.textColor
case .solarizedLight:
return NSColor.black
case .solarizedDark:
return NSColor.white
}
}
return themeIndex == .light ? NSColor.black : NSColor.white
}
// MARK: Images
func shutdownImage() -> NSImage {
if let symbolImageForShutdown = symbolImage(for: "ellipsis.circle") {
return symbolImageForShutdown
}
return fallbackImageProvider(NSImage(named: NSImage.Name("PowerIcon"))!,
NSImage(named: NSImage.Name("PowerIcon-White"))!,
NSImage(named: NSImage.Name("Power"))!,
NSImage(named: NSImage.Name("PowerIcon"))!,
NSImage(named: NSImage.Name("PowerIcon-White"))!)
}
func preferenceImage() -> NSImage {
if let symbolImageForPreference = symbolImage(for: "plus") {
return symbolImageForPreference
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Settings"))!,
NSImage(named: NSImage.Name("Settings-White"))!,
NSImage(named: NSImage.actionTemplateName)!,
NSImage(named: NSImage.Name("Settings"))!,
NSImage(named: NSImage.Name("Settings-White"))!)
}
func pinImage() -> NSImage {
if let pinImage = symbolImage(for: "macwindow.on.rectangle") {
return pinImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Float"))!,
NSImage(named: NSImage.Name("Float-White"))!,
NSImage(named: NSImage.Name("Pin"))!,
NSImage(named: NSImage.Name("Float"))!,
NSImage(named: NSImage.Name("Float-White"))!)
}
func sunriseImage() -> NSImage {
if let symbolImage = symbolImage(for: "sunrise.fill") {
return symbolImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Sunrise"))!,
NSImage(named: NSImage.Name("WhiteSunrise"))!,
NSImage(named: NSImage.Name("Sunrise Dynamic"))!,
NSImage(named: NSImage.Name("Sunrise"))!,
NSImage(named: NSImage.Name("WhiteSunrise"))!)
}
func sunsetImage() -> NSImage {
if let symbolImage = symbolImage(for: "sunset.fill") {
return symbolImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Sunset"))!,
NSImage(named: NSImage.Name("WhiteSunset"))!,
NSImage(named: NSImage.Name("Sunset Dynamic"))!,
NSImage(named: NSImage.Name("Sunset"))!,
NSImage(named: NSImage.Name("WhiteSunset"))!)
}
func removeImage() -> NSImage {
if let symbolImage = symbolImage(for: "xmark") {
return symbolImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Remove"))!,
NSImage(named: NSImage.Name("WhiteRemove"))!,
NSImage(named: NSImage.Name("Remove Dynamic"))!,
NSImage(named: NSImage.Name("Remove"))!,
NSImage(named: NSImage.Name("WhiteRemove"))!)
}
func extraOptionsImage() -> NSImage {
return fallbackImageProvider(NSImage(named: NSImage.Name("Extra"))!,
NSImage(named: NSImage.Name("ExtraWhite"))!,
NSImage(named: NSImage.Name("Extra Dynamic"))!,
NSImage(named: NSImage.Name("Extra"))!,
NSImage(named: NSImage.Name("ExtraWhite"))!)
}
func menubarOnboardingImage() -> NSImage {
if #available(macOS 10.14, *) {
switch themeIndex {
case .system:
return NSImage(named: NSImage.Name("Dynamic Menubar"))!
case .light, .solarizedLight:
return NSImage(named: NSImage.Name("Light Menubar"))!
case .dark, .solarizedDark:
return NSImage(named: NSImage.Name("Dark Menubar"))!
}
}
return retrieveCurrentSystem() == .dark ? NSImage(named: NSImage.Name("Dark Menubar"))! : NSImage(named: NSImage.Name("Light Menubar"))!
}
func extraOptionsHighlightedImage() -> NSImage {
return fallbackImageProvider(NSImage(named: NSImage.Name("ExtraHighlighted"))!,
NSImage(named: NSImage.Name("ExtraWhiteHighlighted"))!,
NSImage(named: NSImage.Name("ExtraHighlighted Dynamic"))!,
NSImage(named: NSImage.Name("ExtraHighlighted"))!,
NSImage(named: NSImage.Name("ExtraWhiteHighlighted"))!)
}
func sharingImage() -> NSImage {
if let sharingImage = symbolImage(for: "square.and.arrow.up.on.square.fill") {
return sharingImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Sharing"))!,
NSImage(named: NSImage.Name("SharingDarkIcon"))!,
NSImage(named: NSImage.Name("Sharing Dynamic"))!,
NSImage(named: NSImage.Name("Sharing"))!,
NSImage(named: NSImage.Name("SharingDarkIcon"))!)
}
func currentLocationImage() -> NSImage {
if let symbolImage = symbolImage(for: "location.fill") {
return symbolImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("CurrentLocation"))!,
NSImage(named: NSImage.Name("CurrentLocationWhite"))!,
NSImage(named: NSImage.Name("CurrentLocationDynamic"))!,
NSImage(named: NSImage.Name("CurrentLocation"))!,
NSImage(named: NSImage.Name("CurrentLocationWhite"))!)
}
func popoverAppearance() -> NSAppearance {
if #available(macOS 10.14, *) {
switch themeIndex {
case .light, .solarizedLight:
return NSAppearance(named: NSAppearance.Name.vibrantLight)!
case .dark, .solarizedDark:
return NSAppearance(named: NSAppearance.Name.vibrantDark)!
case .system:
return NSAppearance.current
}
}
return themeIndex == .light ? NSAppearance(named: NSAppearance.Name.vibrantLight)! : NSAppearance(named: NSAppearance.Name.vibrantDark)!
}
func addImage() -> NSImage {
if let symbolImageForPreference = symbolImage(for: "plus") {
return symbolImageForPreference
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Add Icon"))!,
NSImage(named: NSImage.Name("Add White"))!,
NSImage(named: .addDynamicIcon)!,
NSImage(named: NSImage.Name("Add Icon"))!,
NSImage(named: NSImage.Name("Add White"))!)
}
func privacyTabImage() -> NSImage {
if let privacyTabSFImage = symbolImage(for: "lock") {
return privacyTabSFImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Privacy"))!,
NSImage(named: NSImage.Name("Privacy Dark"))!,
NSImage(named: .permissionTabIcon)!,
NSImage(named: NSImage.Name("Privacy"))!,
NSImage(named: NSImage.Name("Privacy Dark"))!)
}
func appearanceTabImage() -> NSImage {
if let appearanceTabImage = symbolImage(for: "eye") {
return appearanceTabImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Appearance"))!,
NSImage(named: NSImage.Name("Appearance Dark"))!,
NSImage(named: .appearanceTabIcon)!,
NSImage(named: NSImage.Name("Appearance"))!,
NSImage(named: NSImage.Name("Appearance Dark"))!)
}
func calendarTabImage() -> NSImage {
if let calendarTabImage = symbolImage(for: "calendar") {
return calendarTabImage
}
return fallbackImageProvider(NSImage(named: NSImage.Name("Calendar Tab Icon"))!,
NSImage(named: NSImage.Name("Calendar Tab Dark"))!,
NSImage(named: .calendarTabIcon)!,
NSImage(named: NSImage.Name("Calendar Tab Icon"))!,
NSImage(named: NSImage.Name("Calendar Tab Dark"))!)
}
func generalTabImage() -> NSImage? {
return symbolImage(for: "gearshape")
}
func aboutTabImage() -> NSImage? {
return symbolImage(for: "info.circle")
}
func videoCallImage() -> NSImage? {
if #available(macOS 11.0, *) {
let symbolConfig = NSImage.SymbolConfiguration(pointSize: 20, weight: .regular)
return symbolImage(for: "video.circle.fill")?.withSymbolConfiguration(symbolConfig)
} else {
return nil
}
}
func filledTrashImage() -> NSImage? {
return symbolImage(for: "trash.fill")
}
// Modern Slider
func goBackwardsImage() -> NSImage? {
return symbolImage(for: "gobackward.15")
}
func goForwardsImage() -> NSImage? {
return symbolImage(for: "goforward.15")
}
func resetModernSliderImage() -> NSImage? {
if let xmarkImage = symbolImage(for: "xmark.circle.fill") {
return xmarkImage
}
return removeImage()
}
// MARK: Debug Description
override var debugDescription: String {
if themeIndex == .system {
return "System Theme is \(retrieveCurrentSystem())"
}
return "Current Theme is \(themeIndex)"
}
override var description: String {
return debugDescription
}
// MARK: Private
private func symbolImage(for name: String) -> NSImage? {
assert(name.isEmpty == false)
if #available(OSX 11.0, *) {
return NSImage(systemSymbolName: name,
accessibilityDescription: name)
}
return nil
}
private func retrieveCurrentSystem() -> Theme {
if #available(OSX 10.14, *) {
if let appleInterfaceStyle = UserDefaults.standard.object(forKey: CLAppleInterfaceStyleKey) as? String {
if appleInterfaceStyle.lowercased().contains("dark") {
return .dark
}
}
}
return .light
}
private func setAppAppearance() {
if #available(OSX 10.14, *) {
var appAppearance = NSAppearance(named: .aqua)
if themeIndex == .dark || themeIndex == .solarizedDark {
appAppearance = NSAppearance(named: .darkAqua)
} else if themeIndex == .system {
appAppearance = retrieveCurrentSystem() == .dark ? NSAppearance(named: .darkAqua) : NSAppearance(named: .aqua)
}
if NSApp.appearance != appAppearance {
NSApp.appearance = appAppearance
}
}
}
private func fallbackImageProvider(_ lightImage: NSImage,
_ darkImage: NSImage,
_ systemImage: NSImage,
_ solarizedLightImage: NSImage,
_ solarizedDarkImage: NSImage) -> NSImage
{
if #available(macOS 10.14, *) {
switch themeIndex {
case .light:
return lightImage
case .dark:
return darkImage
case .system:
return systemImage
case .solarizedLight:
return solarizedLightImage
case .solarizedDark:
return solarizedDarkImage
}
}
return themeIndex == .light ? lightImage : darkImage
}
}