QStyleHelper: pass devicePixelRatio to uniqueName()

QStyleHelper::uniqueName() took the size of the pixmap to cache but not
the dpr. This might lead to a situation (e.g. in a multi-display
environment) where we use a pixmap with the wrong dpr and get a
pixelated result on the screen.

Change-Id: Ifdebeddff3380931398b3284a7757b7da950caa9
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>
Reviewed-by: Wladimir Leuschner <wladimir.leuschner@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/widgets/styles/qcommonstyle.cpp b/src/widgets/styles/qcommonstyle.cpp
index 109abbefb2..b853a8e963 100644
--- a/src/widgets/styles/qcommonstyle.cpp
+++ b/src/widgets/styles/qcommonstyle.cpp
@@ -759,7 +759,7 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
             const QString pixmapName = QStyleHelper::uniqueName("$qt_ia-"_L1
                                                      % QLatin1StringView(metaObject()->className())
                                                      % HexString<uint>(pe),
-                                             opt, QSize(size, size) * pixelRatio);
+                                             opt, QSize(size, size), pixelRatio);
             if (!QPixmapCache::find(pixmapName, &pixmap)) {
                 const qreal border = pixelRatio * (size / 5.);
                 const qreal sqsize = pixelRatio * size;