From 23b139038a1dc9a769a358ab112453abcdd39290 Mon Sep 17 00:00:00 2001 From: Mathieu Velten Date: Sat, 3 Mar 2018 12:23:51 +0100 Subject: xcb: round down the scale factor for values < 0.8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This solves huge UI on some (most ?) HD 13 inches that have a calculated scale factor around 1.75. Task-number: QTBUG-53022 QTBUG-57211 Change-Id: I6cc22d3e47d38cb1d5a0daf5646a936256664e48 Reviewed-by: Mårten Nordheim Reviewed-by: Frederik Gladhorn --- src/plugins/platforms/xcb/qxcbscreen.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/plugins/platforms/xcb/qxcbscreen.cpp b/src/plugins/platforms/xcb/qxcbscreen.cpp index df458e85d7..e1bd8eb752 100644 --- a/src/plugins/platforms/xcb/qxcbscreen.cpp +++ b/src/plugins/platforms/xcb/qxcbscreen.cpp @@ -750,7 +750,12 @@ void QXcbScreen::updateGeometry(const QRect &geometry, uint8_t rotation) m_sizeMillimeters = sizeInMillimeters(geometry.size(), virtualDpi()); qreal dpi = geometry.width() / physicalSize().width() * qreal(25.4); - m_pixelDensity = qMax(1, qRound(dpi/96)); + qreal rawFactor = dpi/96; + int roundedFactor = qFloor(rawFactor); + // Round up for .8 and higher. This favors "small UI" over "large UI". + if (rawFactor - roundedFactor >= 0.8) + roundedFactor = qCeil(rawFactor); + m_pixelDensity = qMax(1, roundedFactor); m_geometry = geometry; m_availableGeometry = geometry & m_virtualDesktop->workArea(); QWindowSystemInterface::handleScreenGeometryChange(QPlatformScreen::screen(), m_geometry, m_availableGeometry); -- cgit v1.2.3