Review Request: Fix collapsed folderview in panels

[Ignat Semenov]

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http://git.reviewboard.kde.org/r/103915/
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Review request for Plasma and Aaron J. Seigo.


Description
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Fix folderview behavior in panels with regard to the collapsed mode.

1)Keep it small like Trash or Show desktop / Dashboard (ConstrainedSquare, minimumSize & sizeHint - code taken from Trash, which behaves properly when in a panel with regard to scaling).
2)Update icon size on panel icon size change.
3)No duplicates - if (m_iconWidget) check - the absence of such a  check resulted in Really Weird(TM) things going on, like duplicates or ghost folderviews.


This addresses bug 244557.
    http://bugs.kde.org/show_bug.cgi?id=244557


Diffs
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  plasma/applets/folderview/folderview.cpp c3b6e2a 

Diff: http://git.reviewboard.kde.org/r/103915/diff/diff


Testing
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Tested the hell out of it:dragged the panel around the screen on all the 4 screen edges - no problems noticed. Changed Panel icon size in the Icons KCM, updates on the fly.


Thanks,

Ignat Semenov

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