Review Request: Fix resizing issues in krunner

[Jacopo De Simoi]

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http://reviewboard.kde.org/r/911/
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Review request for Plasma and Aaron Seigo.


Summary
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This patch attempts to fix various inconsistencies that appear when resizing krunner and also provides some minor optimization to the drawing path. As per a discussion in irc, here is the default resizing behaviour:
- allow the user to resize krunner, and keep the new size along sessions.
- allow the user to move krunner, but reset the position along sessions.
Comments in the patch are quite self-explanatory; in particular I believe to have hit a qt bug which I do not fully understand; as soon as I'll dig into it I'll open a qt task if necessary.
A few remarks:
- I put the results view and the cosmetic divider line in a resultsContainer so that showing the results won't trigger too many resizes.
- I added some hide() here and there again to avoid drawing resizes right before hiding the window
- I corrected a bug in handling resizing of the items; there might be a more elegant way to deal with it. If this is the case, please let me know. 
Thanks


Diffs
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  branches/KDE/4.3/kdebase/workspace/krunner/interfaces/default/interface.h 989181 
  branches/KDE/4.3/kdebase/workspace/krunner/interfaces/default/interface.cpp 989181 
  branches/KDE/4.3/kdebase/workspace/krunner/interfaces/default/resultitem.h 989181 
  branches/KDE/4.3/kdebase/workspace/krunner/interfaces/default/resultitem.cpp 989181 
  branches/KDE/4.3/kdebase/workspace/krunner/interfaces/default/resultscene.cpp 989181 

Diff: http://reviewboard.kde.org/r/911/diff


Testing
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Thanks,

Jacopo