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| author | Luca Beldi <v.ronin@yahoo.it> | 2018-09-28 19:51:55 +0100 |
|---|---|---|
| committer | Luca Beldi <v.ronin@yahoo.it> | 2018-10-03 09:34:19 +0000 |
| commit | 98ec8bed198d3428a9642c542518f7cca07acfb3 (patch) | |
| tree | 43e43d982532a198cb33525b3b78f192265c64a8 /src | |
| parent | 155ae07b7083cc7960f0f4425eb11849254d78ad (diff) | |
Minor performance improvement to QLabel with Image
QPixmap::fromImage in QLabel paintEvent should use the rvalue
reference overload for efficiency
[ChangeLog][QtWidgets][QLabel] Minor performance improvement
when painting a label with an image
Change-Id: I8ab9bf427c1efc320907c66538e9f8e4011f5586
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
Diffstat (limited to 'src')
| -rw-r--r-- | src/widgets/widgets/qlabel.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/widgets/widgets/qlabel.cpp b/src/widgets/widgets/qlabel.cpp index 60f88df9af..a840bf4ee6 100644 --- a/src/widgets/widgets/qlabel.cpp +++ b/src/widgets/widgets/qlabel.cpp @@ -1098,7 +1098,7 @@ void QLabel::paintEvent(QPaintEvent *) QImage scaledImage = d->cachedimage->scaled(scaledSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation); - d->scaledpixmap = new QPixmap(QPixmap::fromImage(scaledImage)); + d->scaledpixmap = new QPixmap(QPixmap::fromImage(std::move(scaledImage))); d->scaledpixmap->setDevicePixelRatio(devicePixelRatioF()); } pix = *d->scaledpixmap; |