Add helper to react to darkmode changes
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@ -69,4 +69,27 @@ std::optional<bool> isDarkModeEnabled()
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return std::nullopt;
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}
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/*!
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* \brief Invokes the specified callback when the color scheme changed.
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*
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* The first argument of the callback will be whether the color scheme is dark now (Qt::ColorScheme::Dark).
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* The callback is invoked immediately by this function unless \a invokeImmediately is set to false.
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*
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* \remarks Whether dark mode is enabled can only be determined on Qt 6.5 or newer and only on certain
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* platforms. If it cannot be determined the \a darkModeChangedCallback is never invoked.
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*/
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QMetaObject::Connection onDarkModeChanged(std::function<void(bool)> &&darkModeChangedCallback, QObject *context, bool invokeImmediately)
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{
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#if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
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if (const auto *const styleHints = QGuiApplication::styleHints()) {
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if (invokeImmediately) {
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darkModeChangedCallback(styleHints->colorScheme() == Qt::ColorScheme::Dark);
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}
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return QObject::connect(styleHints, &QStyleHints::colorSchemeChanged, context,
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[handler = std::move(darkModeChangedCallback)](Qt::ColorScheme colorScheme) { return handler(colorScheme == Qt::ColorScheme::Dark); });
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}
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#endif
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return QMetaObject::Connection();
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}
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} // namespace QtUtilities
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@ -3,10 +3,13 @@
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#include "../global.h"
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#include <QMetaObject>
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#include <QPalette>
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#include <functional>
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#include <optional>
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QT_FORWARD_DECLARE_CLASS(QObject)
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QT_FORWARD_DECLARE_CLASS(QString)
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namespace QtUtilities {
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@ -14,6 +17,8 @@ namespace QtUtilities {
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QT_UTILITIES_EXPORT bool openLocalFileOrDir(const QString &path);
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QT_UTILITIES_EXPORT bool isPaletteDark(const QPalette &palette = QPalette());
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QT_UTILITIES_EXPORT std::optional<bool> isDarkModeEnabled();
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QT_UTILITIES_EXPORT QMetaObject::Connection onDarkModeChanged(
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std::function<void(bool)> &&darkModeChangedCallback, QObject *context = nullptr, bool invokeImmediately = true);
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} // namespace QtUtilities
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