RFR: 8254841: [macos] Enter or Exit events are shouldn't be displayed while resizing [v5]

[Alan Snyder]

My understanding is that live resizing means the window display updates continuously as the window size is changed by the user (who is dragging a resize handle).

The alternative is for AppKit to scale the original window display to fit the updated window size until the user stops dragging.

Live resizing is generally preferable. Even blanking the window is probably better than showing a scaled (and probably distorted) version of the content.

I’m not aware of any application that shows a scaled image during resize.



> On Sep 21, 2021, at 4:59 PM, Phil Race <prr at openjdk.java.net> wrote:
> 
> On Tue, 21 Sep 2021 23:39:41 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:
> 
>>> _AppKit sets the value of this property to YES when a live resizing operation involving the view is underway. Use this property to determine when to optimize your view’s drawing behavior. Typically, you access this property from your drawRect: method and use the value to change the fidelity of the content you draw, or to draw your content more efficiently_
>> 
>> I did not check but I think it might be set when the "resize animation" is in progress.
> 
> That seems unlikely to generate a sequence of such events
> 
> -------------
> 
> PR: https://git.openjdk.java.net/jdk/pull/5497
>