[Tkinter-discuss] Different fonts in 3.3?

[Kevin Walzer]

On 5/14/14, 6:22 PM, Josef Eschgfaeller wrote:
> Ned Deily wrote:
>
>> I wouldn't be surprised to find that the 3.1 version
>> is linked with Tk 8.4 and 3.3 is with Tk 8.5.
>
> Yes. I find this with tkinter.Tcl().eval('info patchlevel')
> which gives 8.4.19 and 8.5.15.
>
>> the Apple-supplied system Tcl/Tk 8.5
>
> I installed today Python 3.4. But some time
> ago I installed ActiveTcl 8.6, which in the
> Frameworks directory is also Current.


If I understand you correctly, you have Python 3.1 which is linked with 
Tk 8.4, and you have just installed Python 3.4, which is linked with Tk 
8.5, and you see a difference in the fonts?

The most likely reason for this is that Tk 8.4 is built on the 
deprecated Carbon framework, which uses a deprecated font engine called 
ATUSI. The version of Tk 8.5 that you are using is built on the Cocoa 
framework, which uses the modern CoreText font rendering engine.

I'm not sure of all the low-level differences between CoreText and 
ATUSI, but there may very well be some subtle differences in how they look.

I was also going to ask if you are running on a Retina Display, which 
can affect text rendering, but that may not be relevant here.

--Kevin

-- 
Kevin Walzer
Code by Kevin/Mobile Code by Kevin
http://www.codebykevin.com
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