Blame SOURCES/qtbase-hidpi_scale_at_192.patch
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diff --git a/src/plugins/platforms/xcb/qxcbscreen.cpp b/src/plugins/platforms/xcb/qxcbscreen.cpp
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index 5e136b5..0ad2842 100644
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--- a/src/plugins/platforms/xcb/qxcbscreen.cpp
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+++ b/src/plugins/platforms/xcb/qxcbscreen.cpp
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@@ -620,7 +620,7 @@ void QXcbScreen::updateGeometry(const QRect &geom, uint8_t rotation)
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m_sizeMillimeters = sizeInMillimeters(xGeometry.size(), virtualDpi());
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qreal dpi = xGeometry.width() / physicalSize().width() * qreal(25.4);
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- m_pixelDensity = qMax(1, qRound(dpi/96));
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+ m_pixelDensity = qMax(1, (int) (dpi/96)); // instead of rounding at 1.5, round at 2.0 (same as GNOME)
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m_geometry = QRect(xGeometry.topLeft(), xGeometry.size());
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m_availableGeometry = xGeometry & m_virtualDesktop->workArea();
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QWindowSystemInterface::handleScreenGeometryChange(QPlatformScreen::screen(), m_geometry, m_availableGeometry);
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