I read the following in a article on apple.com (the emphasis is mine).

This section presents some key principles critical to the design of elegant, efficient, intuitive, and Aqua-compliant user interfaces. Sometimes overlooked by developers, these principles are as relevant today as when Apple first published them decades ago. In fact, they drive the design of the Mac OS X user interface.

What does Aqua-compliant mean?

The article is Human Interface Design (only visible if JavaScript is allowed from apple.com).

  • Jerry, "Aqua" was a specific Apple product - just the code-name. Absolutely nothing to do with "water" in any way. – Fattie Jun 17 '11 at 9:11

Right in the page you referenced was a link, "The Aqua Interface". Following that link yields an explanation.

Aqua is the overall appearance and behavior of Mac OS X. Aqua defines the standard appearance of specific user interface components such as windows, menus, and controls and is also characterized by the anti-aliased appearance of text and graphics, shadowing, transparency, and careful use of color. Aqua delivers standardized consistent behaviors and promotes clear communication of status through animated notifications, visual effects, and more. Designing for Aqua compliance will ensure you provide the best possible user experience for your customers.

Aqua is available to Cocoa, Carbon, and Java software. For Cocoa and Carbon application development, Interface Builder is the best way to begin building an Aqua-compliant graphical user interface. If you are porting an existing Mac OS 9 application to Mac OS X, see the Carbon Porting Guide in Carbon Porting Documentation. Java developers can use the Swing toolkit, which includes an Aqua look and feel in Mac OS X.

Read this part to learn about what Aqua provides and how best to take full advantage of it to ensure your application feels completely “at home” in Mac OS X.

In addition to the resources at the site, Wikipedia has an article on the Aqua Interface as well.

Aqua is the GUI and primary visual theme of Apple Inc.'s Mac OS X operating system. It is based around the theme of water, as its name suggests, with droplet-like elements and liberal use of translucency and reflection effects. Steve Jobs noted Aqua's glossy aesthetic: "One of the design goals was when you saw it you wanted to lick it."

The Aqua theme and user interface was first introduced at the January 2000 Macworld Conference & Expo in San Francisco. Aqua's first appearance in a commercial product was in the July 2000 release of iMovie 2.

Aqua design elements make up the uniform appearance of most Mac OS X applications. Its goal is to "incorporate color, depth, translucence, and complex textures into a visually appealing interface" in Mac OS X applications. Although Aqua is the entire user interface, two notable features of Aqua are gel-like buttons (such as the ones colored red, yellow, and green that control the windows), and a Dock, which facilitates the launching of and navigation between applications.

Perhaps this question would be better in a computer-related forum.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.