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Don't round scaling factor

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Qt 5.14 introduced new feature related to HighDPI screens support,
this parameter is called "scale factor rounding policy", and it is
intended to improve fractional scale factor support (like 150%).
Qt::PassThrough value guarantee that no any rounding will applied to
scale factor, and will be used as is.
This commit is contained in:
Nick Korotysh 2020-03-25 17:00:58 +03:00
parent fcc87b4e9b
commit a9b0d84df9
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1 changed files with 3 additions and 0 deletions
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src/app/main.cpp
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@ -136,6 +136,9 @@ int main(int argc, char *argv[])
// Attribute Qt::AA_EnableHighDpiScaling must be set before QCoreApplication is created
if (qgetenv("QT_ENABLE_HIGHDPI_SCALING").isEmpty() && qgetenv("QT_AUTO_SCREEN_SCALE_FACTOR").isEmpty())
Application::setAttribute(Qt::AA_EnableHighDpiScaling, true);
// HighDPI scale factor policy must be set before QGuiApplication is created
if (qgetenv("QT_SCALE_FACTOR_ROUNDING_POLICY").isEmpty())
Application::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
#endif
try {