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Extract system dark mode from QPalette

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Ilya Fedin 2025-01-25 16:35:53 +04:00 • committed by John Preston
parent 39b90092ff
commit 8534cf3756
1 changed files with 31 additions and 14 deletions
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45
Telegram/SourceFiles/window/themes/window_theme.cpp
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@ -526,24 +526,41 @@ void ChatBackground::start() {
checkUploadWallPaper(); checkUploadWallPaper();
}, _lifetime); }, _lifetime);
rpl::combine(
#if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0) #if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
rpl::single( rpl::single(
QGuiApplication::styleHints()->colorScheme() QGuiApplication::styleHints()->colorScheme()
) | rpl::then( ) | rpl::then(
base::qt_signal_producer( base::qt_signal_producer(
QGuiApplication::styleHints(), QGuiApplication::styleHints(),
&QStyleHints::colorSchemeChanged &QStyleHints::colorSchemeChanged
)
),
#endif // Qt >= 6.5.0
rpl::single(
QGuiApplication::palette()
) | rpl::then(
base::qt_signal_producer(
qApp,
&QGuiApplication::paletteChanged
)
) )
) | rpl::map([](Qt::ColorScheme colorScheme) { #if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
return colorScheme == Qt::ColorScheme::Unknown ) | rpl::map([](Qt::ColorScheme colorScheme, const QPalette &palette) {
? std::nullopt return colorScheme != Qt::ColorScheme::Unknown
: std::make_optional(colorScheme == Qt::ColorScheme::Dark); ? colorScheme == Qt::ColorScheme::Dark
}) | rpl::start_with_next([](std::optional<bool> dark) { #else // Qt >= 6.5.0
) | rpl::map([](const QPalette &palette) {
const auto dark = Platform::IsDarkMode();
return dark
? *dark
#endif // Qt < 6.5.0
: palette.windowText().color().lightness()
> palette.window().color().lightness();
}) | rpl::distinct_until_changed(
) | rpl::start_with_next([](bool dark) {
Core::App().settings().setSystemDarkMode(dark); Core::App().settings().setSystemDarkMode(dark);
}, _lifetime); }, _lifetime);
#else // Qt >= 6.5.0
Core::App().settings().setSystemDarkMode(Platform::IsDarkMode());
#endif // Qt < 6.5.0
} }
void ChatBackground::refreshThemeWatcher() { void ChatBackground::refreshThemeWatcher() {