| Age | Commit message (Collapse) | Author |
|
|
|
|
|
By separating the width and height info, we can save some unnecessary
overhead in terms of memory and CPU cycles, and make the calculation of
the height of a row (or the width of a column in Compact View) a bit
simpler.
To achieve this, this patch extends the concept of "logical rows"
(which are actually columns in Compact View) to "logical width" and
"logical height" (which is the actual height and width, respectively, in
Compact View). The distinction between rows/columns and "logical"
rows/columns may be a bit confusing, but the confusion is already in the
current code, and I hope that it will be mitigated a bit by prefixing
the corresponding variables with "logical".
REVIEW: 118454
|
|
KItemListViewLayouter uses a KItemListSizeHintResolver to find out how
much space the items will need in the view.
Before this commit, the size hint resolver object could be changed at
runtime, and it could also be null. However, we never made use of these
possibilities, so all the code that checks if m_sizeHintResolver is
null is actually not needed at all.
|
|
The speed up is really small, but theses changes are mostly straightforward and make the code a bit nicer - break
the KStandardItemListWidgetInformant::itemSizeHint beast into three smaller functions.
FIXED-IN: 4.13
REVIEW: 112979
|
|
It is not necessary to save the position of each item as a QPointF
because all items in a row will have the same y-coordinate, and all
items in a column will have the same x-coordinate. Therefore, we can
reduce the number of doubles that we store from
(number of items) * 2
to
(number of rows) + (number of colums)
which is at least 50% less.
REVIEW: 114460
|
|
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
|
|
1. Remove the unneeded variable rowCount.
2. Simplify the calculation of the member m_maximumScrollOffset. We can
just use the current value of "y" because this is the offset that
the next row would have.
REVIEW: 113233
|
|
KItemListViewLayouter::doLayout().
Make use of QSizeF::transpose() and simplify the m_itemInfos usage.
REVIEW: 112535
|
|
In Icons/Details (Compact) View, no layouting is necessary if the view
height (width) changes.
REVIEW: 111322
|
|
- 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
|