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| author | Paul Olav Tvete <paul.tvete@theqtcompany.com> | 2015-06-25 14:14:36 +0200 |
|---|---|---|
| committer | Paul Olav Tvete <paul.tvete@theqtcompany.com> | 2015-06-30 12:38:55 +0000 |
| commit | d6813d00410a79e133ee58d1197feb5dee877974 (patch) | |
| tree | 4027ef4ee21e0fee742df4516b1fca73190a75a3 /src/gui/kernel/qhighdpiscaling.cpp | |
| parent | 7809e77f2e6163de892afb99cb3a4a8f259f4709 (diff) | |
Add application attribute to disable highDPI scaling
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 <morten.sorvig@theqtcompany.com>
Diffstat (limited to 'src/gui/kernel/qhighdpiscaling.cpp')
| -rw-r--r-- | src/gui/kernel/qhighdpiscaling.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
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))) { |