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swiftosx-yosemitensstatusitem

How can I read the user selection for OS X menu bar in Xcode (Swift)

I'm creating an agent app for OS X in swift (only showing the app icon in the menu bar). I'm loading the icon for the app from the AppDelegate using: 

 statusItem.image = NSImage(named: "BlackIcon")

and it works fine.

However, if the user has chosen to use the dark menu bar from the System Preferences -> General, the user won't see the icon as it's black.

enter image description here

So I need to display a different 'WhiteIcon' to the user if they have the option selected.

How can I check whether the user has this option active from my app?

Solution

  • It appears that you are trying to invert menulet icon color for dark mode. By default OSX handles darkmode and inverts the image color, however you need to specifically add [image setTemplate:YES] to have this work for you if it already doesnt.

    Objective-c:

    self.statusItem = [[NSStatusBar systemStatusBar]     
statusItemWithLength:NSSquareStatusItemLength];
NSImage *image = [NSImage imageNamed:@"statusItemIcon"];
[image setTemplate:YES];
[self.statusItem setImage:image];

    swift: (Originally answered by Zhi-Wei Cai at link below)

    var isDark = false

func isDarkMode() {
  // Swift2
  // isDark = NSAppearance.currentAppearance().name.hasPrefix("NSAppearanceNameVibrantDark") 

  // Swift3+
  isDark = NSAppearance.current.name.rawValue.hasPrefix("NSAppearanceNameVibrantDark") 
}

override func drawRect(dirtyRect: NSRect) {
super.drawRect(dirtyRect)
isDarkMode()
// Now use "isDark" to determine the drawing colour.
if isDark {
    // ...
 } else {
    // ...
 }
}

    This answer explains it in the detail: NSStatusItem change image for dark tint