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| author | Andreas Aardal Hanssen <andreas.aardal.hanssen@nokia.com> | 2009-06-16 07:40:41 (GMT) |
|---|---|---|
| committer | Andreas Aardal Hanssen <andreas.aardal.hanssen@nokia.com> | 2009-06-16 07:41:44 (GMT) |
| commit | 36ff1b507bf2d509019ae8ddd638922b09755c6b (patch) | |
| tree | dac4142ca4293c9cd31a3b3b517c39fdf5dfaff3 | |
| parent | d9308550f104526d29b1cdd56514ae3bb967d7f9 (diff) | |
| download | Qt-36ff1b507bf2d509019ae8ddd638922b09755c6b.zip Qt-36ff1b507bf2d509019ae8ddd638922b09755c6b.tar.gz Qt-36ff1b507bf2d509019ae8ddd638922b09755c6b.tar.bz2 | |
Early exit from QRegion::intersects() if there is only one rect.
Don't waste cycles with constructing two vectors with rectangles if
there is only one rectangle in each of the two regions.
Reviewed-by: Lars
Reviewed-by: bnilsen
| -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 c4cd77a..946d880 100644 --- a/src/gui/painting/qregion.cpp +++ b/src/gui/painting/qregion.cpp @@ -698,6 +698,8 @@ bool QRegion::intersects(const QRegion ®ion) const if (!rect_intersects(boundingRect(), region.boundingRect())) return false; + if (numRects() == 1 && region.numRects() == 1) + return true; const QVector<QRect> myRects = rects(); const QVector<QRect> otherRects = region.rects(); |