Where do I find details on handling Liquid Glass in AppKit toolbars?
Asked on 2025-07-16
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For details on handling Liquid Glass in AppKit toolbars, you can refer to the session titled "Build an AppKit app with the new design" from WWDC 2025. This session covers how AppKit automatically groups toolbar buttons on Liquid Glass and how you can customize this behavior using NSToolbarItemGroup and spacers. It also discusses the adaptive nature of Liquid Glass, which changes appearance based on the brightness of the content behind it, and how this is communicated using the NSAppearance system.
You can find more information in the Glass chapter of the session.
Build an AppKit app with the new design
Update your AppKit app to take full advantage of the new design system. We’ll dive into key changes to tab views, split views, bars, presentations, search, and controls, and show you how to use Liquid Glass in your custom UI. To get the most out of this video, we recommend first watching “Get to know the new design system” for general design guidance.
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Meet Liquid Glass
Liquid Glass unifies Apple platform design language while providing a more dynamic and expressive user experience. Get to know the design principles of Liquid Glass, explore its core optical and physical properties, and learn where to use it and why.