Re: "New" busy cursor in the Finder
Re: "New" busy cursor in the Finder
- Subject: Re: "New" busy cursor in the Finder
- From: Eric Schlegel <email@hidden>
- Date: Thu, 20 Dec 2012 11:30:50 -0800
On Dec 19, 2012, at 8:03 PM, email@hidden wrote:
> I noticed recently that the Finder has a "new" very nice looking animated busy cursor, which you can see here: https://dl.dropbox.com/u/45534011/BusyCursor.png
>
> It should seem very familiar to Windows users who have had the "pointer + hourglass" cursor for a long time. The meaning is... I am working on what you asked me to do, things may take a moment but I haven't actually frozen (unlike the spinning rainbow pizza of doom). In the picture "Open With" is going to take a while to recalculate as Spotlight was busy indexing at that moment.
>
> I put the "new" in inverted commas because Apple actually implemented this cursor for Java apps a long time ago. This is the first time I've seen it in a fully native app like the Finder. There's an NSCursor category defined here:
>
> /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/JavaVM.framework/Frameworks/JavaRuntimeSupport.framework/Headers/JRSCursor.h
>
> @interface NSCursor (JavaRuntimeSupport)
> + (NSCursor *) javaBusyButClickableCursor;
>
> This will show that cursor successfully, but it obviously requires linking to JavaRuntimeSupport.framework, which I doubt the Finder does?
You're actually seeing the cursor in Finder (and other apps) when opening a menu that requires a significant amount of time to open or render (which the "Open…" menu item often does). Menus in OS X apps (both Carbon and Cocoa) are still implemented using the Carbon Menu Manager, which accesses this cursor via the Carbon API SetAnimatedThemeCursor.
I don't believe there's currently any NSCursor API for accessing this cursor; a Radar would be appropriate.
-eric
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