https://bugs.kde.org/show_bug.cgi?id=376593
Bug ID: 376593
Summary: Clean window buffer for areas outside the window's
mask
Product: kwin
Version: 5.9.2
Platform: openSUSE RPMs
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: mvourla...@gmail.com
Target Milestone: ---
Hello,
there is the following issue with the Now Dock or the all new Latte Dock. As a
reference both are docks that animate with parabolic zoom their tasks and
plasmoids. They both use the QQuickWindow mask in order to free the areas of
the window that are not needed from the dock.
We have the following issue and we are trying to understand whichone's
responsibility is this case.
As you can see in the screenshot:
https://cloud.githubusercontent.com/assets/24593950/22618122/43503764-ead5-11e6-9eb6-141bbd907b2e.png
when the parabolic zoom starts, the mask of the window increases directly to
the maximum needed size but there are cases that the above painting is
happening.
By reading at: http://doc.qt.io/qt-5/qwindow.html#setMask
Window manager responsibility: "The window manager may or may not choose to
display any areas of the window not included in the mask"
Application responsibility: "it is the application's responsibility to clear to
transparent the areas that are not part of the mask."
from our part we dont paint the areas outside the mask for the above screenshot
to occur. Could you please provide with some wisdom, is this Qt, Kwin or our
dock fault?
with regards,
michail
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