Widgets: pass dpr to QIcon::pixmap()

Change the remaining calls to QIcon::pixmap() to pass a valid
devicePixelRatio parameter.

Pick-to: 6.9
Change-Id: I0e71e20c8109e296446e9e13cddba31d53c05df9
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

src/widgets/dialogs/qmessagebox.cpp

@@ -1924,8 +1924,7 @@ void QMessageBox::about(QWidget *parent, const QString &title, const QString &te
     );
     msgBox->setAttribute(Qt::WA_DeleteOnClose);
     QIcon icon = msgBox->windowIcon();
-    QSize size = icon.actualSize(QSize(64, 64));
-    msgBox->setIconPixmap(icon.pixmap(size));
+    msgBox->setIconPixmap(icon.pixmap(QSize(64, 64), msgBox->devicePixelRatio()));
 
     // should perhaps be a style hint
 #ifdef Q_OS_MAC

src/widgets/doc/snippets/code/doc_src_styles.cpp

@@ -78,7 +78,9 @@
     QPixmap pix;
     QRect textRect = btn->rect;
     if (!btn->icon.isNull()) {
-        pix = btn->icon.pixmap(btn->iconSize, btn->state & State_Enabled ? QIcon::Normal : QIcon::Disabled);
+        const auto dpr = p->device()->devicePixelRatio();
+        pix = btn->icon.pixmap(btn->iconSize, dpr,
+                               btn->state & State_Enabled ? QIcon::Normal : QIcon::Disabled);
         drawItemPixmap(p, btn->rect, alignment, pix);
         if (btn->direction == Qt::RightToLeft)
             textRect.setRight(textRect.right() - btn->iconSize.width() - 4);

src/widgets/itemviews/qitemdelegate.cpp

@@ -23,6 +23,7 @@
 #include <qtextlayout.h>
 #include <private/qabstractitemdelegate_p.h>
 #include <private/qabstractitemmodel_p.h>
+#include <private/qstylehelper_p.h>
 #include <private/qtextengine_p.h>
 #include <qdebug.h>
 #include <qlocale.h>
@@ -934,7 +935,8 @@ QPixmap QItemDelegate::decoration(const QStyleOptionViewItem &option, const QVar
     case QMetaType::QIcon: {
         QIcon::Mode mode = d->iconMode(option.state);
         QIcon::State state = d->iconState(option.state);
-        return qvariant_cast<QIcon>(variant).pixmap(option.decorationSize, mode, state); }
+        const auto dpr = QStyleHelper::getDpr(option.widget);
+        return qvariant_cast<QIcon>(variant).pixmap(option.decorationSize, dpr, mode, state); }
     case QMetaType::QColor: {
         static QPixmap pixmap(option.decorationSize);
         pixmap.fill(qvariant_cast<QColor>(variant));

src/widgets/styles/qfusionstyle.cpp

@@ -2182,7 +2182,8 @@ void QFusionStyle::drawComplexControl(ComplexControl control, const QStyleOption
                         titleBar->icon.paint(painter, iconRect);
                     } else {
                         QStyleOption tool = *titleBar;
-                        QPixmap pm = proxy()->standardIcon(SP_TitleBarMenuButton, &tool, widget).pixmap(16, 16);
+                        QPixmap pm = proxy()->standardIcon(SP_TitleBarMenuButton, &tool, widget)
+                                        .pixmap(QSize(16, 16), QStyleHelper::getDpr(painter));
                         tool.rect = iconRect;
                         painter->save();
                         proxy()->drawItemPixmap(painter, iconRect, Qt::AlignCenter, pm);

src/widgets/styles/qwindowsstyle.cpp

@@ -1055,11 +1055,10 @@ void QWindowsStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPai
                 QIcon::Mode mode = dis ? QIcon::Disabled : QIcon::Normal;
                 if (act && !dis)
                     mode = QIcon::Active;
-                QPixmap pixmap;
-                if (checked)
-                    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 auto size = proxy()->pixelMetric(PM_SmallIconSize, opt, widget);
+                const auto dpr = QStyleHelper::getDpr(p);
+                const auto state = checked ? QIcon::On : QIcon::Off;
+                const auto pixmap = menuitem->icon.pixmap(QSize(size, size), dpr, mode, state);
                 QRect pmr(QPoint(0, 0), pixmap.deviceIndependentSize().toSize());
                 pmr.moveCenter(vCheckRect.center());
                 p->setPen(menuitem->palette.text().color());

src/widgets/util/qsystemtrayicon.cpp

@@ -520,7 +520,7 @@ QBalloonTip::QBalloonTip(const QIcon &icon, const QString &title,
 #if QT_CONFIG(label)
     if (!icon.isNull()) {
         QLabel *iconLabel = new QLabel;
-        iconLabel->setPixmap(icon.pixmap(iconSize, iconSize));
+        iconLabel->setPixmap(icon.pixmap(QSize(iconSize, iconSize), devicePixelRatio()));
         iconLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
         iconLabel->setMargin(2);
         layout->addWidget(iconLabel, 0, 0);