From 98ec8bed198d3428a9642c542518f7cca07acfb3 Mon Sep 17 00:00:00 2001
From: Luca Beldi <v.ronin@yahoo.it>
Date: Fri, 28 Sep 2018 19:51:55 +0100
Subject: [PATCH] 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>
---
 src/widgets/widgets/qlabel.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/widgets/widgets/qlabel.cpp b/src/widgets/widgets/qlabel.cpp
index 60f88df9afa..a840bf4ee6e 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;