From d6813d00410a79e133ee58d1197feb5dee877974 Mon Sep 17 00:00:00 2001 From: Paul Olav Tvete Date: Thu, 25 Jun 2015 14:14:36 +0200 Subject: Add application attribute to disable highDPI scaling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Main use case is for KDE Plasma, which needs to know about real window system coordinates. Can also be used by applications that do all the scaling manually, and that do not want to have Qt scale the coordinate systems and painters. Change-Id: Ic595131c5e2fb4c0af95e9b5bd3e40beee86760b Reviewed-by: Morten Johan Sørvig --- src/gui/kernel/qhighdpiscaling.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/gui/kernel/qhighdpiscaling.cpp') diff --git a/src/gui/kernel/qhighdpiscaling.cpp b/src/gui/kernel/qhighdpiscaling.cpp index e574a79370..46c9f671df 100644 --- a/src/gui/kernel/qhighdpiscaling.cpp +++ b/src/gui/kernel/qhighdpiscaling.cpp @@ -142,6 +142,11 @@ QDpi QHighDpiScaling::m_logicalDpi; // The scaled logical DPI of the primary scr */ void QHighDpiScaling::initHighDpiScaling() { + if (QCoreApplication::testAttribute(Qt::AA_NoHighDpiScaling)) { + m_factor = 1; + m_active = false; + return; + } m_factor = initialScaleFactor(); bool usePlatformPluginPixelDensity = qEnvironmentVariableIsSet(autoScreenEnvVar) || qgetenv(legacyDevicePixelEnvVar).toLower() == "auto"; @@ -157,6 +162,9 @@ void QHighDpiScaling::initHighDpiScaling() void QHighDpiScaling::updateHighDpiScaling() { + if (QCoreApplication::testAttribute(Qt::AA_NoHighDpiScaling)) + return; + if (m_usePixelDensity && !m_pixelDensityScalingActive) { Q_FOREACH (QScreen *screen, QGuiApplication::screens()) { if (!qFuzzyCompare(screenSubfactor(screen->handle()), qreal(1))) { -- cgit v1.2.3