diff options
| author | Sérgio Martins <sergio.martins@kdab.com> | 2015-06-22 22:12:27 +0100 |
|---|---|---|
| committer | Sérgio Martins <sergio.martins@kdab.com> | 2015-06-23 15:35:59 +0000 |
| commit | fece7cdb5daed826ab074b3210327dcfd7ab0e90 (patch) | |
| tree | 05b99df28e5fb65a81397a9464ad977027559322 /src/widgets/graphicsview/qgraphicssceneindex.cpp | |
| parent | a4d3af961445995337c279e71c861afc213c06f3 (diff) | |
widgets: Use QList::reserve(), reduces reallocations.
Change-Id: I49cc03f365c77f142f62c8e77505ec09723a44d9
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Diffstat (limited to 'src/widgets/graphicsview/qgraphicssceneindex.cpp')
| -rw-r--r-- | src/widgets/graphicsview/qgraphicssceneindex.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/widgets/graphicsview/qgraphicssceneindex.cpp b/src/widgets/graphicsview/qgraphicssceneindex.cpp index 8662f73d64..a76f6b6565 100644 --- a/src/widgets/graphicsview/qgraphicssceneindex.cpp +++ b/src/widgets/graphicsview/qgraphicssceneindex.cpp @@ -520,7 +520,9 @@ QList<QGraphicsItem *> QGraphicsSceneIndex::estimateTopLevelItems(const QRectF & scened->ensureSortedTopLevelItems(); if (order == Qt::DescendingOrder) { QList<QGraphicsItem *> sorted; - for (int i = scened->topLevelItems.size() - 1; i >= 0; --i) + const int numTopLevelItems = scened->topLevelItems.size(); + sorted.reserve(numTopLevelItems); + for (int i = numTopLevelItems - 1; i >= 0; --i) sorted << scened->topLevelItems.at(i); return sorted; } |