Well, the user has selected a desktop wallpaper he likes, presumably with a 
pleasing color scheme. Taking vibrancy from an image the user has already 
indicated a preference for is much kinder than blurring in whatever happens to 
be in a window behind the foreground app.

—

Charles Jenkins


On Monday, January 5, 2015 at 7:10 PM, Graham Cox wrote:

>  
> > On 5 Jan 2015, at 11:58 pm, Charles Jenkins <cejw...@gmail.com 
> > (mailto:cejw...@gmail.com)> wrote:
> >  
> > if there's a way to tell the window server to use only the desktop image to 
> > create vibrancy effects in a the sidebar, ignoring any other windows which 
> > may lie between my app and the desktop
>  
>  
> Would you really want that, even if it could be done? The effect would be 
> that your active window was cutting a hole through the underlying windows to 
> reveal the desktop. As much as the translucency effect is annoying and a 
> performance drag, it is at least consistent with the layered windows 
> metaphor. You'd be better off just making your window entirely opaque, and I 
> think we should be doing that to send Apple the message that we don't want 
> the stinking translucency effect.
>  
> --Graham  

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