diff options
Diffstat (limited to 'src/gui')
-rw-r--r-- | src/gui/image/qicon.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/gui/image/qicon.cpp b/src/gui/image/qicon.cpp index df8220a0c6..84e387e317 100644 --- a/src/gui/image/qicon.cpp +++ b/src/gui/image/qicon.cpp @@ -165,6 +165,11 @@ QIconPrivate::QIconPrivate(QIconEngine *e) qreal QIconPrivate::pixmapDevicePixelRatio(qreal displayDevicePixelRatio, const QSize &requestedSize, const QSize &actualSize) { QSize targetSize = requestedSize * displayDevicePixelRatio; + if ((actualSize.width() == targetSize.width() && actualSize.height() <= targetSize.height()) || + (actualSize.width() <= targetSize.width() && actualSize.height() == targetSize.height())) { + // Correctly scaled for dpr, just having different aspect ratio + return displayDevicePixelRatio; + } qreal scale = 0.5 * (qreal(actualSize.width()) / qreal(targetSize.width()) + qreal(actualSize.height() / qreal(targetSize.height()))); return qMax(qreal(1.0), displayDevicePixelRatio *scale); @@ -185,7 +190,12 @@ QPixmapIconEngine::~QPixmapIconEngine() void QPixmapIconEngine::paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state) { - QSize pixmapSize = rect.size() * qt_effective_device_pixel_ratio(0); + qreal dpr = 1.0; + if (QCoreApplication::testAttribute(Qt::AA_UseHighDpiPixmaps)) { + auto paintDevice = painter->device(); + dpr = paintDevice ? paintDevice->devicePixelRatioF() : qApp->devicePixelRatio(); + } + const QSize pixmapSize = rect.size() * dpr; QPixmap px = pixmap(pixmapSize, mode, state); painter->drawPixmap(rect, px); } |