Port to QImage and QPixmap deviceIndependentSize()

Replace the “size() / devicePixelRatio()” pattern with
a call to deviceIndependentSize().

Change-Id: I9d9359e80b9e6643e7395028cd43e3261d449ae7
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

20 files changed, 50 insertions, 60 deletions

diff --git a/examples/corelib/threads/mandelbrot/mandelbrotwidget.cpp b/examples/corelib/threads/mandelbrot/mandelbrotwidget.cpp
index bb1f83482b..a1431db0d3 100644
--- a/examples/corelib/threads/mandelbrot/mandelbrotwidget.cpp
+++ b/examples/corelib/threads/mandelbrot/mandelbrotwidget.cpp
@@ -109,7 +109,7 @@ void MandelbrotWidget::paintEvent(QPaintEvent * /* event */)
 //! [7] //! [8]
         auto previewPixmap = qFuzzyCompare(pixmap.devicePixelRatio(), qreal(1))
             ? pixmap
-            : pixmap.scaled(pixmap.size() / pixmap.devicePixelRatio(), Qt::KeepAspectRatio,
+            : pixmap.scaled(pixmap.deviceIndependentSize().toSize(), Qt::KeepAspectRatio,
                             Qt::SmoothTransformation);
         double scaleFactor = pixmapScale / curScale;
         int newWidth = int(previewPixmap.width() * scaleFactor);
@@ -216,7 +216,7 @@ void MandelbrotWidget::mouseReleaseEvent(QMouseEvent *event)
         pixmapOffset += event->position().toPoint() - lastDragPos;
         lastDragPos = QPoint();
 
-        const auto pixmapSize = pixmap.size() / pixmap.devicePixelRatio();
+        const auto pixmapSize = pixmap.deviceIndependentSize().toSize();
         int deltaX = (width() - pixmapSize.width()) / 2 - pixmapOffset.x();
         int deltaY = (height() - pixmapSize.height()) / 2 - pixmapOffset.y();
         scroll(deltaX, deltaY);
diff --git a/src/gui/kernel/qshapedpixmapdndwindow.cpp b/src/gui/kernel/qshapedpixmapdndwindow.cpp
index e58d37693a..490860342d 100644
--- a/src/gui/kernel/qshapedpixmapdndwindow.cpp
+++ b/src/gui/kernel/qshapedpixmapdndwindow.cpp
@@ -104,9 +104,7 @@ void QShapedPixmapWindow::updateGeometry(const QPoint &pos)
 {
     QSize size(1, 1);
     if (!m_pixmap.isNull()) {
-        size = qFuzzyCompare(m_pixmap.devicePixelRatio(), qreal(1.0))
-            ? m_pixmap.size()
-            : (QSizeF(m_pixmap.size()) / m_pixmap.devicePixelRatio()).toSize();
+        size = m_pixmap.deviceIndependentSize().toSize();
     }
     setGeometry(QRect(pos - m_hotSpot, size));
 }
diff --git a/src/gui/painting/qcoregraphics.mm b/src/gui/painting/qcoregraphics.mm
index ef29f4a490..ad183f770b 100644
--- a/src/gui/painting/qcoregraphics.mm
+++ b/src/gui/painting/qcoregraphics.mm
@@ -145,7 +145,7 @@ QT_END_NAMESPACE
     // NSImage.
     auto nsImage = [[NSImage alloc] initWithSize:NSZeroSize];
     auto *imageRep = [[NSBitmapImageRep alloc] initWithCGImage:cgImage];
-    imageRep.size = (image.size() / image.devicePixelRatio()).toCGSize();
+    imageRep.size = image.deviceIndependentSize().toCGSize();
     [nsImage addRepresentation:[imageRep autorelease]];
     Q_ASSERT(CGSizeEqualToSize(nsImage.size, imageRep.size));
 
@@ -178,7 +178,7 @@ QT_END_NAMESPACE
             continue;
 
         auto *imageRep = [[NSBitmapImageRep alloc] initWithCGImage:cgImage];
-        imageRep.size = (image.size() / image.devicePixelRatio()).toCGSize();
+        imageRep.size = image.deviceIndependentSize().toCGSize();
         [nsImage addRepresentation:[imageRep autorelease]];
     }
 
diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index 9ca3de5cf2..3577d71869 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -967,12 +967,12 @@ void QPaintEngineEx::drawPolygon(const QPoint *points, int pointCount, PolygonDr
 
 void QPaintEngineEx::drawPixmap(const QPointF &pos, const QPixmap &pm)
 {
-    drawPixmap(QRectF(pos, pm.size() / pm.devicePixelRatio()), pm, pm.rect());
+    drawPixmap(QRectF(pos, pm.deviceIndependentSize()), pm, pm.rect());
 }
 
 void QPaintEngineEx::drawImage(const QPointF &pos, const QImage &image)
 {
-    drawImage(QRectF(pos, image.size() / image.devicePixelRatio()), image, image.rect());
+    drawImage(QRectF(pos, image.deviceIndependentSize()), image, image.rect());
 }
 
 void QPaintEngineEx::drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s)
diff --git a/src/gui/text/qtextimagehandler.cpp b/src/gui/text/qtextimagehandler.cpp
index 290aa256cb..2872366208 100644
--- a/src/gui/text/qtextimagehandler.cpp
+++ b/src/gui/text/qtextimagehandler.cpp
@@ -102,20 +102,19 @@ static QSize getPixmapSize(QTextDocument *doc, const QTextImageFormat &format)
     QSize size(width, height);
     if (!hasWidth || !hasHeight) {
         pm = getPixmap(doc, format);
-        const int pmWidth = pm.width() / pm.devicePixelRatio();
-        const int pmHeight = pm.height() / pm.devicePixelRatio();
+        const QSizeF pmSize = pm.deviceIndependentSize();
 
         if (!hasWidth) {
             if (!hasHeight)
-                size.setWidth(pmWidth);
+                size.setWidth(pmSize.width());
             else
-                size.setWidth(qRound(height * (pmWidth / (qreal) pmHeight)));
+                size.setWidth(qRound(height * (pmSize.width() / (qreal) pmSize.height())));
         }
         if (!hasHeight) {
             if (!hasWidth)
-                size.setHeight(pmHeight);
+                size.setHeight(pmSize.height());
             else
-                size.setHeight(qRound(width * (pmHeight / (qreal) pmWidth)));
+                size.setHeight(qRound(width * (pmSize.height() / (qreal) pmSize.width())));
         }
     }
 
@@ -171,10 +170,11 @@ static QSize getImageSize(QTextDocument *doc, const QTextImageFormat &format)
     QSize size(width, height);
     if (!hasWidth || !hasHeight) {
         image = getImage(doc, format);
+        QSizeF imageSize = image.deviceIndependentSize();
         if (!hasWidth)
-            size.setWidth(image.width() / image.devicePixelRatio());
+            size.setWidth(imageSize.width());
         if (!hasHeight)
-            size.setHeight(image.height() / image.devicePixelRatio());
+            size.setHeight(imageSize.height());
     }
 
     qreal scale = 1.0;
diff --git a/src/plugins/styles/mac/qmacstyle_mac.mm b/src/plugins/styles/mac/qmacstyle_mac.mm
index 4f141327e2..c81e91659c 100644
--- a/src/plugins/styles/mac/qmacstyle_mac.mm
+++ b/src/plugins/styles/mac/qmacstyle_mac.mm
@@ -3568,9 +3568,10 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
                 QPixmap pixmap = header->icon.pixmap(QSize(iconExtent, iconExtent), p->device()->devicePixelRatio(), mode);
 
                 QRect pixr = header->rect;
-                pixr.setY(header->rect.center().y() - (pixmap.height() / pixmap.devicePixelRatio() - 1) / 2);
+                QSizeF size = pixmap.deviceIndependentSize();
+                pixr.setY(header->rect.center().y() - (size.height() - 1) / 2);
                 proxy()->drawItemPixmap(p, pixr, Qt::AlignVCenter, pixmap);
-                textr.translate(pixmap.width() / pixmap.devicePixelRatio() + 2, 0);
+                textr.translate(size.width() + 2, 0);
             }
             QString text = header->text;
             if (const QStyleOptionHeaderV2 *headerV2 = qstyleoption_cast<const QStyleOptionHeaderV2 *>(header)) {
@@ -3627,12 +3628,13 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
                         // Draw the text if it's needed.
                         if (tb->toolButtonStyle != Qt::ToolButtonIconOnly) {
                             needText = true;
+                            QSizeF size = pixmap.deviceIndependentSize();
                             if (tb->toolButtonStyle == Qt::ToolButtonTextUnderIcon) {
-                                pr.setHeight(pixmap.size().height() / pixmap.devicePixelRatio() + 6);
+                                pr.setHeight(size.height() + 6);
                                 cr.adjust(0, pr.bottom(), 0, -3);
                                 alignment |= Qt::AlignCenter;
                             } else {
-                                pr.setWidth(pixmap.width() / pixmap.devicePixelRatio() + 8);
+                                pr.setWidth(size.width() + 8);
                                 cr.adjust(pr.right(), 0, 0, 0);
                                 alignment |= Qt::AlignLeft | Qt::AlignVCenter;
                             }
@@ -3812,12 +3814,11 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
                     if (btn.state & State_On)
                         state = QIcon::On;
                     QPixmap pixmap = btn.icon.pixmap(btn.iconSize, p->device()->devicePixelRatio(), mode, state);
-                    int pixmapWidth = pixmap.width() / pixmap.devicePixelRatio();
-                    int pixmapHeight = pixmap.height() / pixmap.devicePixelRatio();
-                    contentW += pixmapWidth + QMacStylePrivate::PushButtonContentPadding;
+                    QSizeF pixmapSize = pixmap.deviceIndependentSize();
+                    contentW += pixmapSize.width() + QMacStylePrivate::PushButtonContentPadding;
                     int iconLeftOffset = freeContentRect.x() + (freeContentRect.width() - contentW) / 2;
-                    int iconTopOffset = freeContentRect.y() + (freeContentRect.height() - pixmapHeight) / 2;
-                    QRect iconDestRect(iconLeftOffset, iconTopOffset, pixmapWidth, pixmapHeight);
+                    int iconTopOffset = freeContentRect.y() + (freeContentRect.height() - pixmapSize.height()) / 2;
+                    QRect iconDestRect(iconLeftOffset, iconTopOffset, pixmapSize.width(), pixmapSize.height());
                     QRect visualIconDestRect = visualRect(btn.direction, freeContentRect, iconDestRect);
                     proxy()->drawItemPixmap(p, visualIconDestRect, Qt::AlignLeft | Qt::AlignVCenter, pixmap);
                     int newOffset = iconDestRect.x() + iconDestRect.width()
@@ -4314,13 +4315,12 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
                 }
 #endif
                 QPixmap pixmap = mi->icon.pixmap(iconSize, p->device()->devicePixelRatio(), mode);
-                int pixw = pixmap.width() / pixmap.devicePixelRatio();
-                int pixh = pixmap.height() / pixmap.devicePixelRatio();
                 QRect cr(xpos, mi->rect.y(), checkcol, mi->rect.height());
-                QRect pmr(0, 0, pixw, pixh);
+                QSize size = pixmap.deviceIndependentSize().toSize();
+                QRect pmr(QPoint(0, 0), size);
                 pmr.moveCenter(cr.center());
                 p->drawPixmap(pmr.topLeft(), pixmap);
-                xpos += pixw + 6;
+                xpos += size.width() + 6;
             }
 
             QString s = mi->text;
diff --git a/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp b/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp
index 67d6b0c460..73be33b278 100644
--- a/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp
+++ b/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp
@@ -1273,9 +1273,7 @@ void QWindowsVistaStyle::drawControl(ControlElement element, const QStyleOption
                     pixmap = menuitem->icon.pixmap(proxy()->pixelMetric(PM_SmallIconSize, option, widget), mode, QIcon::On);
                 else
                     pixmap = menuitem->icon.pixmap(proxy()->pixelMetric(PM_SmallIconSize, option, widget), mode);
-                const int pixw = pixmap.width() / pixmap.devicePixelRatio();
-                const int pixh = pixmap.height() / pixmap.devicePixelRatio();
-                QRect pmr(0, 0, pixw, pixh);
+                QRect pmr(QPoint(0, 0), pixmap.deviceIndependentSize().toSize());
                 pmr.moveCenter(vCheckRect.center());
                 painter->setPen(menuitem->palette.text().color());
                 painter->drawPixmap(pmr.topLeft(), pixmap);
diff --git a/src/plugins/styles/windowsvista/qwindowsxpstyle.cpp b/src/plugins/styles/windowsvista/qwindowsxpstyle.cpp
index 000c27e685..d91da5a04c 100644
--- a/src/plugins/styles/windowsvista/qwindowsxpstyle.cpp
+++ b/src/plugins/styles/windowsvista/qwindowsxpstyle.cpp
@@ -1974,9 +1974,7 @@ void QWindowsXPStyle::drawControl(ControlElement element, const QStyleOption *op
                 QPixmap pixmap = checked ?
                                  menuitem->icon.pixmap(proxy()->pixelMetric(PM_SmallIconSize, option, widget), mode, QIcon::On) :
                                  menuitem->icon.pixmap(proxy()->pixelMetric(PM_SmallIconSize, option, widget), mode);
-                const int pixw = pixmap.width() / pixmap.devicePixelRatio();
-                const int pixh = pixmap.height() / pixmap.devicePixelRatio();
-                QRect iconRect(0, 0, pixw, pixh);
+                QRect iconRect(QPoint(0, 0), pixmap.deviceIndependentSize().toSize());
                 iconRect.moveCenter(QRect(xpos, y, checkcol, h).center());
                 QRect vIconRect = visualRect(option->direction, option->rect, iconRect);
                 p->setPen(menuitem->palette.text().color());
diff --git a/src/widgets/dialogs/qwizard.cpp b/src/widgets/dialogs/qwizard.cpp
index 3f73b8446f..04840fc96b 100644
--- a/src/widgets/dialogs/qwizard.cpp
+++ b/src/widgets/dialogs/qwizard.cpp
@@ -452,7 +452,7 @@ public:
 
     QSize minimumSizeHint() const override {
         if (!pixmap(Qt::ReturnByValue).isNull())
-            return pixmap(Qt::ReturnByValue).size() / pixmap(Qt::ReturnByValue).devicePixelRatio();
+            return pixmap(Qt::ReturnByValue).deviceIndependentSize().toSize();
         return QFrame::minimumSizeHint();
     }
 
diff --git a/src/widgets/effects/qpixmapfilter.cpp b/src/widgets/effects/qpixmapfilter.cpp
index c23cfd7e44..c5cef305ea 100644
--- a/src/widgets/effects/qpixmapfilter.cpp
+++ b/src/widgets/effects/qpixmapfilter.cpp
@@ -885,7 +885,7 @@ Q_WIDGETS_EXPORT void qt_blurImage(QPainter *p, QImage &blurImage, qreal radius,
     if (p) {
         p->scale(scale, scale);
         p->setRenderHint(QPainter::SmoothPixmapTransform);
-        p->drawImage(QRect(QPoint(0, 0), blurImage.size() / blurImage.devicePixelRatio()), blurImage);
+        p->drawImage(QRect(QPoint(0, 0), blurImage.deviceIndependentSize().toSize()), blurImage);
     }
 }
 
diff --git a/src/widgets/graphicsview/qgraphicsitem.cpp b/src/widgets/graphicsview/qgraphicsitem.cpp
index cb014de6f4..2975cd1320 100644
--- a/src/widgets/graphicsview/qgraphicsitem.cpp
+++ b/src/widgets/graphicsview/qgraphicsitem.cpp
@@ -9585,9 +9585,9 @@ QRectF QGraphicsPixmapItem::boundingRect() const
         return QRectF();
     if (d->flags & ItemIsSelectable) {
         qreal pw = 1.0;
-        return QRectF(d->offset, QSizeF(d->pixmap.size()) / d->pixmap.devicePixelRatio()).adjusted(-pw/2, -pw/2, pw/2, pw/2);
+        return QRectF(d->offset, d->pixmap.deviceIndependentSize()).adjusted(-pw/2, -pw/2, pw/2, pw/2);
     } else {
-        return QRectF(d->offset, QSizeF(d->pixmap.size()) / d->pixmap.devicePixelRatio());
+        return QRectF(d->offset, d->pixmap.deviceIndependentSize());
     }
 }
 
diff --git a/src/widgets/itemviews/qitemdelegate.cpp b/src/widgets/itemviews/qitemdelegate.cpp
index 9c56c82578..9d755c0b55 100644
--- a/src/widgets/itemviews/qitemdelegate.cpp
+++ b/src/widgets/itemviews/qitemdelegate.cpp
@@ -1051,10 +1051,10 @@ QRect QItemDelegate::rect(const QStyleOptionViewItem &option,
             break;
         case QMetaType::QPixmap: {
             const QPixmap &pixmap = qvariant_cast<QPixmap>(value);
-            return QRect(QPoint(0, 0), pixmap.size() / pixmap.devicePixelRatio() ); }
+            return QRect(QPoint(0, 0), pixmap.deviceIndependentSize().toSize()); }
         case QMetaType::QImage: {
             const QImage &image = qvariant_cast<QImage>(value);
-            return QRect(QPoint(0, 0), image.size() /  image.devicePixelRatio() ); }
+            return QRect(QPoint(0, 0), image.deviceIndependentSize().toSize()); }
         case QMetaType::QIcon: {
             QIcon::Mode mode = d->iconMode(option.state);
             QIcon::State state = d->iconState(option.state);
diff --git a/src/widgets/itemviews/qstyleditemdelegate.cpp b/src/widgets/itemviews/qstyleditemdelegate.cpp
index 97bf8ac939..975735eb15 100644
--- a/src/widgets/itemviews/qstyleditemdelegate.cpp
+++ b/src/widgets/itemviews/qstyleditemdelegate.cpp
@@ -343,13 +343,13 @@ void QStyledItemDelegate::initStyleOption(QStyleOptionViewItem *option,
         case QMetaType::QImage: {
             QImage image = qvariant_cast<QImage>(*value);
             option->icon = QIcon(QPixmap::fromImage(image));
-            option->decorationSize = image.size() / image.devicePixelRatio();
+            option->decorationSize = image.deviceIndependentSize().toSize();
             break;
         }
         case QMetaType::QPixmap: {
             QPixmap pixmap = qvariant_cast<QPixmap>(*value);
             option->icon = QIcon(pixmap);
-            option->decorationSize = pixmap.size() / pixmap.devicePixelRatio();
+            option->decorationSize = pixmap.deviceIndependentSize().toSize();
             break;
         }
         default:
diff --git a/src/widgets/styles/qfusionstyle.cpp b/src/widgets/styles/qfusionstyle.cpp
index 638915b342..5b268aa684 100644
--- a/src/widgets/styles/qfusionstyle.cpp
+++ b/src/widgets/styles/qfusionstyle.cpp
@@ -1652,10 +1652,7 @@ void QFusionStyle::drawControl(ControlElement element, const QStyleOption *optio
                 else
                     pixmap = menuItem->icon.pixmap(iconSize, painter->device()->devicePixelRatio(), mode);
 
-                const int pixw = pixmap.width() / pixmap.devicePixelRatio();
-                const int pixh = pixmap.height() / pixmap.devicePixelRatio();
-
-                QRect pmr(0, 0, pixw, pixh);
+                QRect pmr(QPoint(0, 0), pixmap.deviceIndependentSize().toSize());
                 pmr.moveCenter(vCheckRect.center());
                 painter->setPen(menuItem->palette.text().color());
                 if (!ignoreCheckMark && checkable && checked) {
diff --git a/src/widgets/styles/qstyle.cpp b/src/widgets/styles/qstyle.cpp
index f26f1a16c8..8946b9d90e 100644
--- a/src/widgets/styles/qstyle.cpp
+++ b/src/widgets/styles/qstyle.cpp
@@ -573,8 +573,9 @@ QRect QStyle::itemPixmapRect(const QRect &rect, int alignment, const QPixmap &pi
     int x, y, w, h;
     rect.getRect(&x, &y, &w, &h);
 
-    const int pixmapWidth = pixmap.width()/pixmap.devicePixelRatio();
-    const int pixmapHeight = pixmap.height()/pixmap.devicePixelRatio();
+    QSizeF pixmapSize = pixmap.deviceIndependentSize();
+    const int pixmapWidth = pixmapSize.width();
+    const int pixmapHeight = pixmapSize.height();
 
     if ((alignment & Qt::AlignVCenter) == Qt::AlignVCenter)
         y += h/2 - pixmapHeight/2;
diff --git a/src/widgets/styles/qwindowsstyle.cpp b/src/widgets/styles/qwindowsstyle.cpp
index 8c5b509eb5..39fabd1218 100644
--- a/src/widgets/styles/qwindowsstyle.cpp
+++ b/src/widgets/styles/qwindowsstyle.cpp
@@ -1157,9 +1157,7 @@ void QWindowsStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPai
                     pixmap = menuitem->icon.pixmap(proxy()->pixelMetric(PM_SmallIconSize, opt, widget), mode, QIcon::On);
                 else
                     pixmap = menuitem->icon.pixmap(proxy()->pixelMetric(PM_SmallIconSize, opt, widget), mode);
-                const int pixw = pixmap.width() / pixmap.devicePixelRatio();
-                const int pixh = pixmap.height() / pixmap.devicePixelRatio();
-                QRect pmr(0, 0, pixw, pixh);
+                QRect pmr(QPoint(0, 0), pixmap.deviceIndependentSize().toSize());
                 pmr.moveCenter(vCheckRect.center());
                 p->setPen(menuitem->palette.text().color());
                 p->drawPixmap(pmr.topLeft(), pixmap);
diff --git a/src/widgets/widgets/qlabel.cpp b/src/widgets/widgets/qlabel.cpp
index d701cd7d57..50e63dfd68 100644
--- a/src/widgets/widgets/qlabel.cpp
+++ b/src/widgets/widgets/qlabel.cpp
@@ -604,7 +604,7 @@ QSize QLabelPrivate::sizeForWidth(int w) const
 
     if (pixmap && !pixmap->isNull()) {
         br = pixmap->rect();
-        br.setSize(br.size() / pixmap->devicePixelRatio());
+        br.setSize(pixmap->deviceIndependentSize().toSize());
 #ifndef QT_NO_PICTURE
     } else if (picture && !picture->isNull()) {
         br = picture->boundingRect();
@@ -612,7 +612,7 @@ QSize QLabelPrivate::sizeForWidth(int w) const
 #if QT_CONFIG(movie)
     } else if (movie && !movie->currentPixmap().isNull()) {
         br = movie->currentPixmap().rect();
-        br.setSize(br.size() / movie->currentPixmap().devicePixelRatio());
+        br.setSize(movie->currentPixmap().deviceIndependentSize().toSize());
 #endif
     } else if (isTextLabel) {
         int align = QStyle::visualAlignment(textDirection(), QFlag(this->align));
diff --git a/src/widgets/widgets/qmdisubwindow.cpp b/src/widgets/widgets/qmdisubwindow.cpp
index 06ae0479d7..120bf590b9 100644
--- a/src/widgets/widgets/qmdisubwindow.cpp
+++ b/src/widgets/widgets/qmdisubwindow.cpp
@@ -422,7 +422,7 @@ ControlLabel::ControlLabel(QMdiSubWindow *subWindow, QWidget *parent)
     Q_UNUSED(subWindow);
     setFocusPolicy(Qt::NoFocus);
     updateWindowIcon();
-    setFixedSize(label.size() / label.devicePixelRatio());
+    setFixedSize(label.deviceIndependentSize().toSize());
 }
 
 /*
@@ -430,7 +430,7 @@ ControlLabel::ControlLabel(QMdiSubWindow *subWindow, QWidget *parent)
 */
 QSize ControlLabel::sizeHint() const
 {
-    return label.size() / label.devicePixelRatio();
+    return label.deviceIndependentSize().toSize();
 }
 
 /*
diff --git a/src/widgets/widgets/qsplashscreen.cpp b/src/widgets/widgets/qsplashscreen.cpp
index f417a997a7..8adb61c5f2 100644
--- a/src/widgets/widgets/qsplashscreen.cpp
+++ b/src/widgets/widgets/qsplashscreen.cpp
@@ -284,7 +284,7 @@ void QSplashScreen::setPixmap(const QPixmap &pixmap)
     d->pixmap = pixmap;
     setAttribute(Qt::WA_TranslucentBackground, pixmap.hasAlpha());
 
-    const QRect r(QPoint(), pixmap.size() / pixmap.devicePixelRatio());
+    const QRect r(QPoint(), pixmap.deviceIndependentSize().toSize());
     resize(r.size());
 
     move(screen()->geometry().center() - r.center());
diff --git a/tests/auto/widgets/widgets/qlabel/tst_qlabel.cpp b/tests/auto/widgets/widgets/qlabel/tst_qlabel.cpp
index c9e71d8388..ad4f8e04bc 100644
--- a/tests/auto/widgets/widgets/qlabel/tst_qlabel.cpp
+++ b/tests/auto/widgets/widgets/qlabel/tst_qlabel.cpp
@@ -584,7 +584,7 @@ void tst_QLabel::taskQTBUG_48157_dprPixmap()
     pixmap.load(QFINDTESTDATA(QStringLiteral("red@2x.png")));
     QCOMPARE(pixmap.devicePixelRatio(), 2.0);
     label.setPixmap(pixmap);
-    QCOMPARE(label.sizeHint(), pixmap.rect().size() / pixmap.devicePixelRatio());
+    QCOMPARE(label.sizeHint(), pixmap.deviceIndependentSize().toSize());
 }
 
 void tst_QLabel::taskQTBUG_48157_dprMovie()
@@ -595,7 +595,7 @@ void tst_QLabel::taskQTBUG_48157_dprMovie()
     movie.start();
     QCOMPARE(movie.currentPixmap().devicePixelRatio(), 2.0);
     label.setMovie(&movie);
-    QCOMPARE(label.sizeHint(), movie.currentPixmap().size() / movie.currentPixmap().devicePixelRatio());
+    QCOMPARE(label.sizeHint(), movie.currentPixmap().deviceIndependentSize().toSize());
 }
 
 void tst_QLabel::resourceProvider()