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QSplashScreen: draw pixmap with SmoothTransfrom

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Use high-quality scaling to improve rendering in cases
where the pixmap has to be scaled down, such as when
drawing a @2x pixmap at 150%.

Change-Id: I216b03b61dfa2cc2cc8c573e24a576424f6f5d17
Fixes: QTBUG-88982
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
(cherry picked from commit fdc687913df2dbd92c7469082690381fea55e628)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Morten Johan Sørvig 2020-12-02 15:08:18 +01:00 committed by Qt Cherry-pick Bot
parent 15d497c38d
commit 6c546342c2
1 changed files with 1 additions and 0 deletions
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src/widgets/widgets/qsplashscreen.cpp
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@ -353,6 +353,7 @@ bool QSplashScreen::event(QEvent *e)
if (e->type() == QEvent::Paint) {
Q_D(QSplashScreen);
QPainter painter(this);
painter.setRenderHints(QPainter::SmoothPixmapTransform);
painter.setLayoutDirection(layoutDirection());
if (!d->pixmap.isNull())
painter.drawPixmap(QPoint(), d->pixmap);