Review Request 127374: Fix taskbar flicking when opening Plasma popups

Kai Uwe Broulik kde at privat.broulik.de
Mon Mar 14 19:10:23 UTC 2016


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Doesn't https://codereview.qt-project.org/#/c/149013/ fix that?

- Kai Uwe Broulik


On März 14, 2016, 6:45 nachm., David Edmundson wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/127374/
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> 
> (Updated März 14, 2016, 6:45 nachm.)
> 
> 
> Review request for KDE Frameworks and Plasma.
> 
> 
> Repository: plasma-framework
> 
> 
> Description
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> 
> When we show a Qt window it resets all wm_states, including the
> SKIP_TASKBAR state that Qt doesn't support see
> QXcbWindow::setNetWmStates
> 
> In order to set the flag we need to do it after Qt has mapped the
> window. (after a showEvent)
> 
> Dialog previously did this using ExposeEvent which we know will happen after show.
> 
> However:
> 1) This is a rather random fix
> 2) It will be called after TaskManager has been notified of a new window
> 
> By merging into the same event we can make sure the flag is set before
> the task manager processes the new window. This means task manager will always skip plasma popups.
> 
> A better fix will obviously be patching Qt to not reset flags it doesn't know about 
> and then we can set this flag in the ctor. I shall try and do that for Qt 5.7.
> 
> BUG: 332024
> REVIEW:
> 
> 
> Diffs
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> 
>   src/plasmaquick/dialog.cpp 56f39c0740a1e32a9588e7461dcb45aab3fe9e85 
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> Diff: https://git.reviewboard.kde.org/r/127374/diff/
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> 
> Testing
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> 
> Added debug in libtaskmanager, the window flags are always correct for the new window.
> 
> 
> Thanks,
> 
> David Edmundson
> 
>

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