Review Request 121559: OverviewDockerDock and KisZoomManager fixes

[Stefano Bonicatti]

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https://git.reviewboard.kde.org/r/121559/
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Review request for Calligra.


Repository: calligra


Description
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OverviewDockerDock: no need to call the code in setCanvas if the canvas to be set is the same.

KisZoomManager: the zoom slider widget is created with no parent and then added to a QStatusBar, when it is then removed from it (when an image is closed), it is not deleted because QStatusBar::removeWidget doesn't delete the widget (as Qt Doc says). 
Moreover each time an image is closed KisZoomManager is deleted and then recreated with a new slider when an image is opened. The patch fixes the leak.


Diffs
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  krita/plugins/extensions/dockers/overview/overviewdocker_dock.cpp 68bd6fe 
  krita/ui/kis_zoom_manager.cc 50f0e98 

Diff: https://git.reviewboard.kde.org/r/121559/diff/


Testing
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Compiles against calligra/2.9.
Doesn't leak anymore.


Thanks,

Stefano Bonicatti

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