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High-dpi: Add test for setting the scale factor rounding policy

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Test setting both via QGuiApplication property and environment.

Change-Id: Iaccc920adb6294d610b02d4c844aa5b15eb7eecd
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
This commit is contained in:
Morten Sørvig 2022-05-19 22:23:36 +02:00
parent e1c8ad359d
commit bc6dea891e
1 changed files with 56 additions and 0 deletions
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56
tests/auto/gui/kernel/qhighdpi/tst_qhighdpi.cpp
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@ -39,6 +39,8 @@ private slots:
void environment_QT_SCREEN_SCALE_FACTORS_data();
void environment_QT_SCREEN_SCALE_FACTORS();
void environment_QT_USE_PHYSICAL_DPI();
void environment_QT_SCALE_FACTOR_ROUNDING_POLICY();
void application_setScaleFactorRoundingPolicy();
void screenAt_data();
void screenAt();
void screenGeometry_data();
@ -187,6 +189,7 @@ void tst_QHighDpi::cleanup()
qunsetenv("QT_SCALE_FACTOR");
qunsetenv("QT_SCREEN_SCALE_FACTORS");
qunsetenv("QT_USE_PHYSICAL_DPI");
qunsetenv("QT_SCALE_FACTOR_ROUNDING_POLICY");
}
void tst_QHighDpi::qhighdpiscaling_data()
@ -351,6 +354,59 @@ void tst_QHighDpi::environment_QT_USE_PHYSICAL_DPI()
}
}
void tst_QHighDpi::environment_QT_SCALE_FACTOR_ROUNDING_POLICY()
{
QList<qreal> dpiValues { 96, 144, 192 };
qputenv("QT_SCALE_FACTOR_ROUNDING_POLICY", "PassThrough");
{
std::unique_ptr<QGuiApplication> app(createStandardOffscreenApp(dpiValues));
for (int i = 0; i < dpiValues.count(); ++i)
QCOMPARE(app->screens()[i]->devicePixelRatio(), dpiValues[i] / qreal(96));
}
qputenv("QT_SCALE_FACTOR_ROUNDING_POLICY", "Round");
{
std::unique_ptr<QGuiApplication> app(createStandardOffscreenApp(dpiValues));
for (int i = 0; i < dpiValues.count(); ++i)
QCOMPARE(app->screens()[i]->devicePixelRatio(), qRound(dpiValues[i] / qreal(96)));
}
qunsetenv("QT_SCALE_FACTOR_ROUNDING_POLICY");
{
std::unique_ptr<QGuiApplication> app(createStandardOffscreenApp(dpiValues));
for (int i = 0; i < dpiValues.count(); ++i)
QCOMPARE(app->screens()[i]->devicePixelRatio(), dpiValues[i] / qreal(96));
}
}
void tst_QHighDpi::application_setScaleFactorRoundingPolicy()
{
QList<qreal> dpiValues { 96, 144, 192 };
QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Round);
{
std::unique_ptr<QGuiApplication> app(createStandardOffscreenApp(dpiValues));
for (int i = 0; i < dpiValues.count(); ++i)
QCOMPARE(app->screens()[i]->devicePixelRatio(), qRound(dpiValues[i] / qreal(96)));
}
QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
{
std::unique_ptr<QGuiApplication> app(createStandardOffscreenApp(dpiValues));
for (int i = 0; i < dpiValues.count(); ++i)
QCOMPARE(app->screens()[i]->devicePixelRatio(), dpiValues[i] / qreal(96));
}
// Verify that environment overrides app setting
QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Round);
qputenv("QT_SCALE_FACTOR_ROUNDING_POLICY", "PassThrough");
{
std::unique_ptr<QGuiApplication> app(createStandardOffscreenApp(dpiValues));
for (int i = 0; i < dpiValues.count(); ++i)
QCOMPARE(app->screens()[i]->devicePixelRatio(), dpiValues[i] / qreal(96));
}
}
void tst_QHighDpi::minimumDpr()
{
QList<qreal> dpiValues { 40, 60, 95 };