Mac Tray Icon Question

[Alan Snyder]

I suspect the images that work are template images, rather than pairs of images.

See https://developer.apple.com/documentation/appkit/nsimage/1520017-template



> On Aug 9, 2022, at 7:12 PM, Jeremy Wood <mickleness at gmail.com> wrote:
> 
> On Macs the tray can present black or white icons, depending on the color of the desktop underneath the menubar.
> 
> For example:
> 
> <galpmnvf.png>
> 
> <qtqoidmn.png>
> 
> Most icons switch from a black icon to a white icon as needed. A few 3rd party app icons do not switch to a white icon against the black background (for ex: Evernote). And interestingly: Apple’s Airdrop icon (the concentric circles shaped like a sideways pacman) also appears to do the wrong thing too.
> 
> Is there a way in a Java desktop app to set up a tray icon that can toggle between white and black icons as needed?
> 
> Obviously we’d love it if this “just worked” without further intervention by inverting our icon, but we’d also be happy if a solution involved adding a PropertyChangeListener somewhere to identify the menubar change and we could update the tray icons ourselves.
> 
> For ex:
> If I change the highlight/accent color (in “System Preferences -> General”), then 8 UIManager Colors change (including “textHighlight”, “Button.light”, etc.) as of JDK 18. As far as I can tell: there is no similar model to identify when the menubar changes colors.
> 
> For now we’ve made a work-around by using the Robot class to grab a pixel from the Apple menu icon every few seconds to determine if it’s light or dark.
> 
> Is there an existing way to resolve this we don’t know about?
> 
> Or if not: is anyone reading this with “author” status interested in helping write this up as an openjdk bug?
> 
> Regards,
>  - Jeremy

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