Re: [Pythonmac-SIG] [ANN] PyObjC 5.0

> On 21 Sep 2018, at 23:24, Glyph <[email protected]> wrote:
> 
> 
> 
>> On Sep 21, 2018, at 4:50 AM, Ronald Oussoren <[email protected] <mailto:[email protected]>> wrote:
>> 
>> 
>> 
>>> On 21 Sep 2018, at 05:59, Glyph <[email protected] <mailto:[email protected]>> wrote:
>>> 
>>> On Sep 18, 2018, at 1:22 PM, Ronald Oussoren via Pythonmac-SIG <[email protected] <mailto:[email protected]>> wrote:
>>>> 
>>>> PyObjC 5.0 is out
>>> 
>>> Thanks again for your tireless (or at least apparently tireless) maintenance, Ronald!
>>> 
>>>> * Added bindings for the “CarbonCore” subframework of the “CoreServices” framework.
>>>> 
>>>> Most APIs in this subframework are not available to Python, only those APIs that are not deprecated and seem interesting are exposed.
>>> 
>>> One thing I wondered about when I saw "carbon" here is that I wonder if the APIs that could make https://pythonhosted.org/pyobjc/examples/Cocoa/AppKit/HotKeyPython/index.html <https://pythonhosted.org/pyobjc/examples/Cocoa/AppKit/HotKeyPython/index.html> are exposed again?  
>> 
>> The API used in that example is not exposed through PyObjC at this time (AFAIK it is part of “Carbon.framework”, not the CarbonCore sub framework of “CoreServices.framework”. 
>> 
>> I’m open to adding bindings to interesting APIs, but note that “RegisterEventHotKey” is not documented on Apple’s website and might not be the right solution for modern code. I don’t know yet what the right solution is though (a number of APIs that are exposed through PyObjC can be used to implement similar functionality).
> 
> If there were a more modern solution I'd gladly use it rather than asking you to expose gross and ancient Carbon APIs :).  Which APIs that are already exposed can do this?

Good question :-).  I thought CGEventTapCreate and related APIs could be used for this, but now that I’ve reread the documentation I no longer think so. MASShortCut still uses the Carbon APIs in its implementation, which seems to confirm that there is no good modern alternative for the RegisterEventHotKey API.

> 
>>> The cautions that the relevant Carbon APIs require 32-bit mode are inaccurate; https://blog.shpakovski.com/2012/07/global-keyboard-shortcuts-in-cocoa.html <https://blog.shpakovski.com/2012/07/global-keyboard-shortcuts-in-cocoa.html> explains that they're still supported in sandboxed Mac App Store apps, so they're just poorly documented, not deprecated.  (It seems that there's never been a proper Cocoa replacement for this functionality, just a couple of popular wrappers floating around out there…)
>>> 
>>> This is something I have wanted to do in Python many times, but never quite badly enough to figure out all the build gymnastics required to get the bindings for https://github.com/shpakovski/MASShortcut <https://github.com/shpakovski/MASShortcut> built and bundled with my application.
>> 
>> I’ll look into exposing this API for PyObjC 5.1, even if that means adding a very limited set of bindings for Carbon.framework.
> 
> Thanks!
> 
>>> -glyph
>>> 
>>> P.S.: speaking of build gymnastics, does anyone on this list happen to have a way to use CocoaPods or something similar to pull in open source Cocoa frameworks to a PyObjC application?
>> 
>> I haven’t looked into this yet.  I guess the hardest part is creating the metadata for constants and pointer arguments. Could you file and issue for this? 
> 
> Sure, sometime this weekend I'll try to write it up.

I have created an experimental binding to MASShortcut on my bitbucket account: https://bitbucket.org/ronaldoussoren/pyobjc-masshortcut <https://bitbucket.org/ronaldoussoren/pyobjc-masshortcut>. This library can be installed using “pip install pyobjc-MASShortcut==1.0a0” (and has a wheel if you use a 64-bit installation of Python 3.7)

This “works” in the sense that I ran my unit tests with Python 3.6 (64-bit), but I have done no testing beyond that.

Creating the bindings was fairly easy, but harder than it should be because the tooling I use to create bindings is primarily created for Apple’s system frameworks and has some issues with 3th-party frameworks. I do want to improve the tooling for this, but don’t know when I’ll get around to actually doing this.

Ronald

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