diff options
Diffstat (limited to 'tests/auto/widgets/kernel/qapplication/tst_qapplication.cpp')
-rw-r--r-- | tests/auto/widgets/kernel/qapplication/tst_qapplication.cpp | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/tests/auto/widgets/kernel/qapplication/tst_qapplication.cpp b/tests/auto/widgets/kernel/qapplication/tst_qapplication.cpp index dfc138d8fc..2eb2d84504 100644 --- a/tests/auto/widgets/kernel/qapplication/tst_qapplication.cpp +++ b/tests/auto/widgets/kernel/qapplication/tst_qapplication.cpp @@ -23,6 +23,7 @@ #include <QtGui/QFontDatabase> #include <QtGui/QClipboard> +#include <QtGui/QStyleHints> #include <QtWidgets/QApplication> #include <QtWidgets/QMessageBox> @@ -119,6 +120,7 @@ private slots: void style(); void applicationPalettePolish(); + void setColorScheme(); void allWidgets(); void topLevelWidgets(); @@ -2051,6 +2053,122 @@ void tst_QApplication::applicationPalettePolish() } } +void tst_QApplication::setColorScheme() +{ + int argc = 1; + QApplication app(argc, &argv0); + + if (QStringList{"minimal", "offscreen", "wayland", "xcb", "wasm", "webassembly"} + .contains(QGuiApplication::platformName(), Qt::CaseInsensitive)) { + QSKIP("Setting the colorScheme is not implemented on this platform."); + } + qDebug() << "Testing setColorScheme on platform" << QGuiApplication::platformName(); + + if (QByteArrayView(app.style()->metaObject()->className()) == "QWindowsVistaStyle") + QSKIP("Setting the colorScheme is not supported with the Windows Vista style."); + + const Qt::ColorScheme defaultColorScheme = QApplication::styleHints()->colorScheme(); + // if we implement setColorScheme, then we must be able to read it + QVERIFY(defaultColorScheme != Qt::ColorScheme::Unknown); + const Qt::ColorScheme newColorScheme = defaultColorScheme == Qt::ColorScheme::Light + ? Qt::ColorScheme::Dark : Qt::ColorScheme::Light; + + class TopLevelWidget : public QWidget + { + QList<QEvent::Type> events; + public: + TopLevelWidget() + { + setObjectName("colorScheme TopLevelWidget"); + } + + void clearEvents() + { + events.clear(); + } + qsizetype eventCount(QEvent::Type type) const + { + return events.count(type); + } + protected: + bool event(QEvent *event) override + { + switch (event->type()) { + case QEvent::ApplicationPaletteChange: + case QEvent::PaletteChange: + case QEvent::ThemeChange: + events << event->type(); + break; + default: + break; + } + + return QWidget::event(event); + } + } topLevelWidget; + topLevelWidget.show(); + QVERIFY(QTest::qWaitForWindowExposed(&topLevelWidget)); + + QSignalSpy colorSchemeChangedSpy(app.styleHints(), &QStyleHints::colorSchemeChanged); + + // always start with a clean list + topLevelWidget.clearEvents(); + const QPalette defaultPalette = topLevelWidget.palette(); + + bool oldPaletteWhenSchemeChanged = false; + connect(app.styleHints(), &QStyleHints::colorSchemeChanged, this, + [defaultPalette, &topLevelWidget, &oldPaletteWhenSchemeChanged]{ + oldPaletteWhenSchemeChanged = defaultPalette == topLevelWidget.palette(); + }); + + app.styleHints()->setColorScheme(newColorScheme); + QTRY_COMPARE(colorSchemeChangedSpy.count(), 1); + // We have not yet updated the palette when we emit the colorSchemeChanged + // signal, so the toplevel widget should still use the previous palette + QVERIFY(oldPaletteWhenSchemeChanged); + QCOMPARE(topLevelWidget.eventCount(QEvent::ThemeChange), 1); + // We can't guarantee that there is only one ApplicationPaletteChange, + // and they might arrive asynchronously in response to ThemeChange + QTRY_COMPARE_GE(topLevelWidget.eventCount(QEvent::ApplicationPaletteChange), 1); + // But we can guarantee a single PaletteChange event for the widget + QCOMPARE(topLevelWidget.eventCount(QEvent::PaletteChange), 1); + // The palette should have changed + QCOMPARE_NE(topLevelWidget.palette(), defaultPalette); + + topLevelWidget.clearEvents(); + colorSchemeChangedSpy.clear(); + + // verify that a widget shown with a color scheme override in place respect that + QWidget newWidget; + newWidget.show(); + QVERIFY(QTest::qWaitForWindowExposed(&newWidget)); + QCOMPARE(newWidget.palette(), topLevelWidget.palette()); + + // Setting to Unknown should follow the system preference again + app.styleHints()->setColorScheme(Qt::ColorScheme::Unknown); + QTRY_COMPARE(colorSchemeChangedSpy.count(), 1); + QCOMPARE(app.styleHints()->colorScheme(), defaultColorScheme); + QTRY_COMPARE(topLevelWidget.eventCount(QEvent::PaletteChange), 1); + + auto debugPalette = qScopeGuard([defaultPalette, &topLevelWidget]{ + qDebug() << "Inspecting palettes for differences"; + const QPalette palette = topLevelWidget.palette(); + for (int g = 0; g < QPalette::NColorGroups; ++g) { + for (int r = 0; r < QPalette::NColorRoles; ++r) { + const auto group = static_cast<QPalette::ColorGroup>(g); + const auto role = static_cast<QPalette::ColorRole>(r); + qDebug() << "...Checking" << group << role; + const auto actualBrush = palette.brush(group, role); + const auto expectedBrush = defaultPalette.brush(group, role); + if (palette.brush(group, role) != defaultPalette.brush(group, role)) + qWarning() << "...Difference in" << group << role << actualBrush << expectedBrush; + } + } + }); + QCOMPARE(topLevelWidget.palette(), defaultPalette); + debugPalette.dismiss(); +} + void tst_QApplication::allWidgets() { int argc = 1; |