<AWT Dev> Modal dialogs for fullscreen window

Vladimir Kravets vova.kravets at gmail.com
Tue Apr 16 06:54:01 PDT 2013

Heh... I see that Anthony made this changes 3 years ago =(


2013/4/16 Artem Ananiev <artem.ananiev at oracle.com>

> Hi, Vladimir,
> I took a short look at your test at github. The test implements its own
> mechanism to enter fullscreen by adding _NET_WM_STATE_FULLSCREEN to the
> list of atoms in _NET_WM_STATE. There may be a conflict between XToolkit
> and the test, for example, caused by using different Display objects.
> In XToolkit, _NET_WM_STATE_FULLSCREEN is only used in exclusive fullscreen
> mode, see the code in X11GraphicsDevice. I can't say for sure if OpenGL is
> used in this case. As for owned windows, nothing special is done about
> them. If a window has an owner, WM_TRANSIENT_FOR is set for it, which
> should be respected by WM. As you say that WM_TRANSIENT_FOR works fine
> together with _NET_WM_STATE_FULLSCREEN in most of the modern WMs, it should
> work for Java windows as well.
> Could you check all the window properties both for the fullscreen window
> and for the child windows, in your environment, please? Are there any
> chances some of the properties (_NET_WM_STATE, WM_TRANSIENT_FOR) are not
> set for some reason?
> Thanks,
> Artem
> On 4/15/2013 8:56 PM, Vladimir Kravets wrote:
>> Hi guys,
>> I'm using in my application fullscreen mode. Since 1.6 java have a lot
>> of issue with it I using X11 native binding for it.
>> Use JNA 3.4. To going to fullscreen I send XSendEvent as _NET_WM_STATE
>> You can look at test application on the github:
>> https://github.com/vkravets/**FullScreenTest<https://github.com/vkravets/FullScreenTest>.
>> Main Class: Main or MinTest
>> So about the issue... I have an issue with modal dialogs or windows
>> which I try to show when my main window in fullscreen mode.
>>  From 1.7 java is not working as expected. In 1.6 java modal
>> dialogs/windows appeared above fullscreen window as it should be, but in
>> 1.7 and 1.8 all modal dialogs/windows appeared under the fullscreen
>> window.
>> I'm using wm Metacity, the same I have noticed on Gnome Shell... It
>> seems that it's related to all clones of Metacity...
>> I'm try to see how it's perform by defult native frameworks and I tested
>> GTK3 and SWT which is using GTK bindings. And everything is working as
>> expected. SmartGit which written on Java and use SWT don't have such
>> problem. VLC/GTK the same - in fullscreen mode I can call some dialogs
>> which will be appeared above fullscreen window.
>> It's very strange  for me that Java in own documentation have such lines:
>> Quote from GraphicsDevice#**setFullScreenWindow:
>> "
>> Windows cannot overlap the full-screen window. All other application
>> windows will always appear beneath the full-screen window in the Z-order.
>> "
>> Since from 1.7 java is using the same message _NET_WM_STATE with
>> _NET_WM_STATE_FULLSCREEN to going to fullscreeb and is not clear why we
>> have such broken behavior with modal dialogs from 1.7 java and such
>> lines in the documentation....
>> I'm already posted a defect to Oracle but Ithink it will be marked as
>> duplicate since I found such issue
>> http://bugs.sun.com/**bugdatabase/view_bug.do?bug_**id=7192269<http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7192269>which marked
>> as Not an Issue and for me is not clear why?
>> Could you please suggest workaround? Or please fix this =)
>> Best Regards,
>> Vladimir
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