Re: Semi-transparent, blurred NSWindow background?
Re: Semi-transparent, blurred NSWindow background?
- Subject: Re: Semi-transparent, blurred NSWindow background?
- From: Seth Willits <email@hidden>
- Date: Mon, 25 Aug 2008 13:51:11 -0700
On Aug 25, 2008, at 1:33 PM, Ricky Sharp wrote:
There isn't a particularly fast way to do this, although I have
experimented with it a bit in the past. You can use the CGWindow
API to read the contents under your window and apply a blur to them
using Core Image directly or indirectly via Core Animation, but in
either case you'll see the Window Server spending considerably more
CPU time as it has to re-render the contents under your window. You
could fake it by updating the image rarely but there isn't a
particularly good way to completely mitigate the CPU usage.
Hmm... it's very hard to tell, but I believe there must be a fast
way that already exists.
I'm sure he meant a fast *public* way to do it.
Using the private APIs / the method that Rob showed is perfectly fast.
--
Seth Willits
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