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In KItemListViewLayouter, we have always stored a QRectF for each item,
which is "the area that the item occupies". However, the size of the
QRectF is already stored in the size hint resolver.
Therefore, it is sufficient to store the position of the top left
corner of the QRectF in a QPointF and construct the QRectF on demand.
This patch reduces the memory usage by 16 bytes for each item in the
view:
* a QRectF is 4 doubles -> 32 byes
* a QPointF contains only 2 doubles -> 16 bytes
REVIEW: 113487
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If the elements are larger than a pointer, QList does not store the
elements themselves, but pointers to them in a contiguous block of
memory. This wastes quite a bit of memory. This can be prevented easily
by using QVector instead.
REVIEW: 111304
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- Move all private headers from the kitemviews-directory into
the 'private' subdirectory.
- Get rid of DolphinDirLister and just use a directory-lister
internally in KFileItemModel.
- Minor interface-cleanups for signals
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