Dig Into Quartz Composer

Dig Into Quartz Composer


Step 3: Pinch the Patch


In the sample composition that we're repurposing, Apple has already done the hard work of wiring together a composition that gathers RSS data from Apple's Web site and scrolls the text up the screen on a swirling animated background. To change the content, simply find the RSS Feed patch (it's on the far-left side of the Editor window), and double-click the port circle next to the URL; this spawns an editable field where you can enter a different RSS feed to fuel your screen saver. Enter http://www.macaddict.com/index.xml to keep tabs on MacAddict's home page, and press Return to accept the edit. Verify the changes in the Viewer window, and if you like what you see, select File > Save (Command-S) to save the screen saver and automatically add it to the list of choices in System Preferences > Desktop & Screen Saver.


Rather than recreate this bear, we'll simply tweak one of the patches.<




+ Add a Comment

Joe Kanary

Hi Rick...

I like your new site. My only caveat is that the how-to articles are spread out over a number of pages with no "print this article" equivalent. A PDF would be helpful.

Just a suggestion...

Thanks for all the years of great reading.

Whitehorse, Yukon Canada

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