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| author | Andreas Aardal Hanssen <andreas.aardal.hanssen@nokia.com> | 2009-06-16 07:48:05 (GMT) |
|---|---|---|
| committer | Andreas Aardal Hanssen <andreas.aardal.hanssen@nokia.com> | 2009-06-16 07:48:05 (GMT) |
| commit | 6952f867c6f506b89ca807fa986198f022ab0926 (patch) | |
| tree | dad155ec12e25df71edfd7c0dd4be2b5813217aa /src/gui/painting/qregion.cpp | |
| parent | 36ff1b507bf2d509019ae8ddd638922b09755c6b (diff) | |
| download | Qt-6952f867c6f506b89ca807fa986198f022ab0926.zip Qt-6952f867c6f506b89ca807fa986198f022ab0926.tar.gz Qt-6952f867c6f506b89ca807fa986198f022ab0926.tar.bz2 | |
Early exit from QRegion::intersects() if there is only one rect.
Don't waste cycles with constructing a vector with rectangles if
there is only one rectangle in the source region.
Same as 36ff1b507bf2d509019ae8ddd638922b09755c6b, but for
QRegion::intersects(QRect).
Reviewed-by: bnilsen
Diffstat (limited to 'src/gui/painting/qregion.cpp')
| -rw-r--r-- | src/gui/painting/qregion.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/gui/painting/qregion.cpp b/src/gui/painting/qregion.cpp index 946d880..03e01c9 100644 --- a/src/gui/painting/qregion.cpp +++ b/src/gui/painting/qregion.cpp @@ -725,6 +725,8 @@ bool QRegion::intersects(const QRect &rect) const const QRect r = rect.normalized(); if (!rect_intersects(boundingRect(), r)) return false; + if (numRects() == 1) + return true; const QVector<QRect> myRects = rects(); for (QVector<QRect>::const_iterator it = myRects.constBegin(); it < myRects.constEnd(); ++it) |