<AWT Dev> [8] Review Request: JDK-8027025 [macosx] getLocationOnScreen returns 0 if parent invisible

[Petr Pchelko]

Hello, Anthony.

> What happens if you display a decorated frame centered on the screen? Will it receive the initial Move/Size event? And if yes, why exactly this isn't happening for undecorated frames?
Yes. The decorated frame is receiving the initial move/resize event. I suppose it's somehow moved(resized) be adding the window decorations, but this is only a guess. 

With best regards. Petr.

On 23.10.2013, at 12:56, Anthony Petrov <anthony.petrov at oracle.com> wrote:

> Hi Petr,
> 
> What happens if you display a decorated frame centered on the screen? Will it receive the initial Move/Size event? And if yes, why exactly this isn't happening for undecorated frames?
> 
> Also, at [1] Alexander said:
>>   The problem was that NSWindow is created with zero bounds and then
>> actual bounds are set.
>>   In this case NSWindow treats big bounds as zoomed state and next zoom
>> move the window to initial zero bounds.
> 
> I'm wondering, won't the same scenario fail for undecorated windows after your fix, just reverting them back to 0x0/1x1 instead of 0x0/0x0?
> 
> [1] http://mail.openjdk.java.net/pipermail/awt-dev/2013-September/005469.html
> 
> --
> best regards,
> Anthony
> 
> On 10/23/2013 12:43 PM, Petr Pchelko wrote:
>> Hello, AWT Team.
>> 
>> Please review the fix for the issue:
>> https://bugs.openjdk.java.net/browse/JDK-8027025
>> The fix is available at:
>> http://cr.openjdk.java.net/~pchelko/8027025/webrev.00/
>> 
>> The problem:
>> When initializing the peer's location and bounds we rely on the initial move/resize event. However if the undecorated frame is created right at the center of the screen this initial event does not come.
>> My testing shows that this is an only situation.
>> 
>> The solution:
>> We revert the changes in JDK-8007219 for undecorated frames. The initial position is a 0-0-1-1 stub, the real position is set later during the initialization.
>> I don't want to do that for decorated frames as 1. this is not needed 2. the native maximize button starts working ugly in some cases.
>> 
>> With best regards. Petr.
>>