Re: [PATCH] ui/cocoa: Remove the uses of full screen APIs

[Akihiko Odaki <akihiko.odaki@gmail.com>]

2021年2月19日(金) 19:24 BALATON Zoltan <balaton@eik.bme.hu>:
>
> 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.

It was not clear what "full screen APIs" refer to in my patch. Today
macOS have three different methods to enter fullscreen:
- [NSWindow -toggleFullscreen:] (the latest one)
- [NSView -enterFullScreenModeWithOptions:]
- Make a borderless window whose frame matches with the screen

ui/cocoa checks if [NSView -enterFullScreenModeWithOptions:] exists
and uses it in this case. Otherwise, it chooses the last method.
However, the detection of [NSView -enterFullScreenModeWithOptions:]
was broken and I fixed it to find the use of [NSView
-enterFullScreenModeWithOptions:] was wrong. This patch deletes
references to [NSView -enterFullScreenModeWithOptions:] but the code
implementing the last method is still intact and properly functions.

Akihiko Odaki

>
> 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
> >
> >