Re: iOS 6 changes in CATextLayer text drawing
Re: iOS 6 changes in CATextLayer text drawing
- Subject: Re: iOS 6 changes in CATextLayer text drawing
- From: Matt Neuburg <email@hidden>
- Date: Thu, 11 Oct 2012 13:25:11 -0700
On Oct 11, 2012, at 10:54 AM, David Duncan <email@hidden> wrote:
> On Oct 11, 2012, at 10:27 AM, Matt Neuburg <email@hidden> wrote:
>
>>> (1) CATextLayer in iOS 6 requires an opaque background in order to antialias text. CATextLayer in iOS 5 did not have this limitation; it could antialias its text perfectly well even if its background was transparent. Why the change? I'm guessing that it's an efficiency boost.
>>
>> I may be confused about this one. I was put off by the fact that my text looks awful on the full-sized Retina simulator, but now it appears that it *always* looked awful on the full-sized Retina simulator. It seems that CATextLayer is **drawing** the text, not using the text system. So now I have a different problem, namely that I don't understand the note at the top of the CATextLayer class docs, since my text drawing in CATextLayer looks the same with or without an opaque background. m.
>
>
> Did you set the contentsScale on your CATextLayer (or wrap it in a UIView)? By default CALayers never change their contentsScale, so if you are just using a plain CATextLayer without anything else to manage it, the contentsScale will be 1 regardless of the screen's density, making for fairly ugly text on Retina displays.
Bingo and thank you, not necessarily in that order!
Hmmm, now I need to figure out why this issue has not appeared on my other layers. Maybe it did and I just didn't notice… m.
--
matt neuburg, phd = email@hidden, http://www.apeth.net/matt/
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