<AWT Dev> <Awt Dev> [9] Review Request for 8011616: JWindow.getLocation and JWindow.getLocationOnScreen return different values on Unity

Semyon Sadetsky semyon.sadetsky at oracle.com
Thu Sep 10 16:26:18 UTC 2015

I have added size assignment to the target component. Please review.


On 7/31/2015 9:28 PM, Semyon Sadetsky wrote:
> You are right in windows size is limited to 65535 and I tested smaller 
> value.
> In Linux WM will limit window size to entire of the screen. I will add 
> size assignment as well.
> --Semyon
> On 7/31/2015 7:12 PM, Sergey Bylokhov wrote:
>> On 31.07.15 18:00, Semyon Sadetsky wrote:
>>>> On windows is changed in awt_Window.cpp. WmMove
>>> What I see there:
>>> (env)->SetIntField(target, AwtComponent::xID, rect.left);
>>>     (env)->SetIntField(target, AwtComponent::yID, rect.top);
>>> Are you talking about size or screen position?
>> Sorry the method name is AwtWIndow::WmSize in awt_Window.cpp, where 
>> we update the target and then post the event.
>>> The initial window size is preserved on Windows. On OSX it can be 
>>> different if notifyReshape() is called upon window create.
>> The window size can be change externally by the different reason, so 
>> we should always relies on the value which was reported by the system.
>>> I don't see any extra issues related to the size currently.
>>> --Semyon
>>>> In general window manager can set a different size/location than we 
>>>> try to set, so we should take a correct values in the callback and 
>>>> update the target component, and after that post event that the 
>>>> bounds was changed.
>>>>> - the utility method was introduced because decorated window can 
>>>>> be moved and it is utilized from several places. It is not the 
>>>>> case for undecorated window.
>>>> It can be moved by the window manager.
>>>>> Not sure that container screen position makes any sense for its 
>>>>> content size event. Is it specified somewhere? Or can you provide 
>>>>> an example when it is necessary?
>>>> I am not sure. It needs to be checked.
>>>>> --Semyon
>>>>> On 7/31/2015 4:14 PM, Sergey Bylokhov wrote:
>>>>>> Hi, Semyon.
>>>>>> A few questions.
>>>>>>  - Why only location is fixed, an update of size if not 
>>>>>> necessary(if for some reason the size was changed by the system 
>>>>>> like location in this case)?
>>>>>>  - Note that we should update the target state before we post an 
>>>>>> event that the size is changed(we post them in 
>>>>>> XWindow.handleConfigureNotifyEvent). It seems that some of the 
>>>>>> peers has utility methods for this(like XDecoratedPeer.handleMoved).
>>>>>> On 31.07.15 11:52, Semyon Sadetsky wrote:
>>>>>>> Hello,
>>>>>>> Please review fix for JDK9:
>>>>>>> bug: https://bugs.openjdk.java.net/browse/JDK-8011616
>>>>>>> webrev: http://cr.openjdk.java.net/~ssadetsky/8011616/webrev.00/
>>>>>>> WM sends the real window position in the configuration event but 
>>>>>>> window peer does not set it to the target. Solution is: do set.
>>>>>>> --Semyon
>>>>>> -- 
>>>>>> Best regards, Sergey.
>>>> -- 
>>>> Best regards, Sergey.
>> -- 
>> Best regards, Sergey.

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