On Fri, 19 Feb 2021, Akihiko Odaki wrote:
> 2021年2月17日(水) 22:09 Gerd Hoffmann <kraxel@redhat.com>:
>>
>> On Fri, Feb 12, 2021 at 09:05:40AM +0900, Akihiko Odaki wrote:
>>> The detections of full screen APIs were wrong. A detection is coded as:
>>> [NSView respondsToSelector:@selector(exitFullScreenModeWithOptions:)]
>>> but it should be:
>>> [NSView instancesRespondToSelector:@selector(exitFullScreenModeWithOptions:)]
>>>
>>> The uses of full screen APIs were also incorrect, and if you fix the
>>> detections, the full screen view stretches the video, changing the
>>> aspect ratio, even if zooming is disabled.
>>>
>>> Remove the code as it does nothing good.
>>
>> So, it's broken right now (and probably for quite a while without anyone
>> complaining).  And the attempt to fix it didn't work out very well.
>> Correct?
>
> Because the detections of APIs are wrong, the code using those APIs
> were never executed and nobody realized it was broken.

Full screen on MacOS X worked when I've last tried but that was 2 years 
ago.

> I did not seriously attempt to fix it because the APIs are no longer
> the best ways to implement fullscreen. ([NSWindow -toggleFullScreen:]
> is more favorable today.) There is not much to reuse even if
> implementing fullscreen with [NSView -enterFullScreenModeWithOptions:]
> since the code is so small.

I think there are people using QEMU to run old MacOS versions on MacOS 
X/macOS and may not follow this mailing list but I'm sure they'll complain 
once you break it.

Regards,
BALATON Zoltan

>> Just dropping the code makes sense to me then.
>>
>> Any objections or better suggestions from the macos camp?
>> If not I'll go queue it for the next UI pull request in a day or two.
>>
>> thanks,
>>   Gerd
>>
>
> Thank you for responding to my patches.
>
> Akihiko Odaki
>
>