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Fix screen scaling factor calculation

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For some users on Windows the physicalDotsPerInch() could return values
that are smaller than the normal 96 DPI which leads to big dialog sizes
taking the entire screen.
So we need to ensure it is at least 96 DPI.
Closes #11405, #11407.
This commit is contained in:
Chocobo1 2019-10-28 14:17:59 +08:00
parent 9c466d84ec
commit 4888b22622
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1 changed files with 4 additions and 1 deletions
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5
src/gui/utils.cpp
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@ -68,7 +68,10 @@ qreal Utils::Gui::screenScalingFactor(const QWidget *widget)
#ifdef Q_OS_WIN
const int screenNumber = qApp->desktop()->screenNumber(widget);
const QScreen *screen = QApplication::screens()[screenNumber];
return (screen->logicalDotsPerInch() / screen->physicalDotsPerInch());
// Workaround for QScreen::physicalDotsPerInch() that could return
// values that are smaller than the normal 96 DPI on Windows
const qreal physicalDPI = qMax<qreal>(screen->physicalDotsPerInch(), 96);
return (screen->logicalDotsPerInch() / physicalDPI);
#elif defined(Q_OS_MACOS)
return 1;
#else