<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
Fri Jul 31 15:00:13 UTC 2015

> 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?
The initial window size is preserved on Windows. On OSX it can be 
different if notifyReshape() is called upon window create.
I don't see any extra issues related to the size currently.


> 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.

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