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This is an automatically generated e-mail. To reply, visit:
https://git.reviewboard.kde.org/r/126475/
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(Updated Dec. 22, 2015, 6:27 p.m.)


Status
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This change has been marked as submitted.


Review request for Plasma, David Edmundson and Martin Gräßlin.


Changes
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Submitted with commit c64a94a265acd5003fbbb4e3abc7fdb72726b4c3 by Eike Hein to 
branch master.


Bugs: 356938
    http://bugs.kde.org/show_bug.cgi?id=356938


Repository: plasma-framework


Description
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PlasmaCore.WindowThumbnail acts as a mini-compositor and redirects windows to 
paint a thumbnail of them. Hovering a Task Manager button delegate will down 
the line instanciate some WindowThumbnails for the tooltip, and these stick 
around when the tooltip is hidden. This causes windows to keep being 
redirected, e.g. severely breaking game performance after hovering them in the 
Task Manager (see associated bug).

I initially tried just wiping the thumbnail delegates on the Task Manager side 
when the tooltip goes hidden, but this breaks UX performance when moving across 
tasks in the applet because the tooltip delegate's visibility prop cycles 
between true and false from one ToolTipArea to the next. I'll still be tweaking 
the Task Manager code to at the very least do this when tooltips are disabled 
to avoid even instanciating, but in the meantime, making WindowThumbnail more 
idiot-proof strikes me as a good idea regardless.


Diffs
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  src/declarativeimports/core/windowthumbnail.cpp 5fc5c5e 

Diff: https://git.reviewboard.kde.org/r/126475/diff/


Testing
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Thanks,

Eike Hein

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