On May 14, 2012, at 1:14 PM, Markus Spoettl <ms_li...@shiftoption.com> wrote:

> On 5/14/12 8:23 PM, Kyle Sluder wrote:
>> On May 14, 2012, at 11:22 AM, Corbin Dunn wrote:
>> 
>>> No, it is not a bug -- unfortunately, we can't make certain things go cross
>>> boundaries from non-layer backed to layer backed.
>>> 
>>> This has an easy solution: layer back the container.
>> 
>> I assumed that Markus was already doing this, since -setAlphaValue: is
>> documented to throw an exception if your view isn't already layer-backed.
> 
> I wasn't, and I was puzzled by this as well. I assumed the comment about the 
> exception was a documentation left-over from earlier SDK releases. It 
> definitely doesn't throw an exception when used on non-layer backed views.

Yeah, one can change the alpha value when not using layers. I guess this 
slipped through the cracks, as it has worked for a while. We draw the view (and 
children) into an image and then composite that for the real drawing.

Definitely log a documentation bug asking to clarify this.

corbin


> 
> Regards
> Markus
> -- 
> __________________________________________
> Markus Spoettl


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