September 2004
Intermediate to advanced
304 pages
9h 26m
English
Content preview from Modding Mac OS X
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Viewing Icons
An application’s icon file is stored within its Resources folder. These files use a .icns extension. Each application may contain one, several, or many different icon files. For example, iTunes contains nearly two dozen different icons, while Calculator has just one. Figure 4-3 shows iTunes’ large collection of icon resource files, which provide unique images for each of its associated file types, better known as its icon family. iTunes document types include playable audio files, visual plug-ins, playlists, and more.
Figure 4-3. Some of iTunes’ .icns files
Icon files are not structured like normal picture files; you cannot open one in Adobe Photoshop. Each .icns file contains several versions of the same image (and an associated mask) at several resolution levels, from small to big. The Finder uses the icon files and displays items at the appropriate resolution. Icon masks determine those parts of the icon that can be clicked or dragged. This allows the Finder to display scaled icons while minimizing computational overhead.
The best way to view a .icns file is with icns Browser (/Developer/Applications/Utilities), a utility that’s included with the Xcode Tools. Either drag an icon resource file onto icns Browser or launch the application and choose File → Open (⌘-O). As Figure 4-4 shows, icns Browser displays the icon images and their associated masks from any icon file. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.