mirror of
https://github.com/amnezia-vpn/amnezia-client.git
synced 2026-06-21 02:01:03 +07:00
dranik
129 lines
3.7 KiB
C++
129 lines
3.7 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "linuxutils.h"
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#include <QApplication>
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#include <QDBusConnection>
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#include <QDBusVariant>
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#include <QGuiApplication>
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#include <QPalette>
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#include <QSettings>
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#include <QStyleHints>
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namespace {
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bool paletteSuggestsDarkTheme()
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{
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const QPalette palette = QGuiApplication::palette();
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const int windowLightness = palette.color(QPalette::Window).lightness();
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const int textLightness = palette.color(QPalette::WindowText).lightness();
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if (textLightness - windowLightness > 50) {
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return true;
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}
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if (windowLightness - textLightness > 50) {
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return false;
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}
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return windowLightness < 128;
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}
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class LinuxThemeObserver final : public QObject {
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Q_OBJECT
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public:
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explicit LinuxThemeObserver(std::function<void()> callback, QObject *parent = nullptr)
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: QObject(parent)
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, m_callback(std::move(callback))
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{
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QDBusConnection bus = QDBusConnection::sessionBus();
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if (!bus.isConnected()) {
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return;
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}
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bus.connect(QStringLiteral("org.freedesktop.portal.Desktop"),
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QStringLiteral("/org/freedesktop/portal/desktop"),
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QStringLiteral("org.freedesktop.portal.Settings"),
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QStringLiteral("SettingChanged"),
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this,
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SLOT(onPortalSettingChanged(QString, QString, QDBusVariant)));
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}
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void setCallback(std::function<void()> callback)
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{
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m_callback = std::move(callback);
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}
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private slots:
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void onPortalSettingChanged(const QString &namespaceName, const QString &key, const QDBusVariant &value)
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{
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Q_UNUSED(value);
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if (namespaceName == QStringLiteral("org.freedesktop.appearance")
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&& key == QStringLiteral("color-scheme") && m_callback) {
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m_callback();
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}
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}
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private:
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std::function<void()> m_callback;
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};
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LinuxThemeObserver *g_themeObserver = nullptr;
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} // namespace
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bool LinuxUtils::isDarkTheme()
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{
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if (QStyleHints *styleHints = QGuiApplication::styleHints()) {
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switch (styleHints->colorScheme()) {
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case Qt::ColorScheme::Dark:
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return true;
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case Qt::ColorScheme::Light:
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return false;
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case Qt::ColorScheme::Unknown:
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default:
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break;
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}
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}
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QSettings settings(QSettings::IniFormat, QSettings::UserScope, QStringLiteral("gtk-3.0"),
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QStringLiteral("settings"));
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const QString themeName = settings.value(QStringLiteral("gtk-theme-name")).toString();
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if (themeName.contains(QStringLiteral("dark"), Qt::CaseInsensitive)) {
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return true;
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}
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if (themeName.contains(QStringLiteral("light"), Qt::CaseInsensitive)) {
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return false;
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}
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QSettings kdeSettings(QSettings::IniFormat, QSettings::UserScope, QStringLiteral("kdeglobals"));
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const QString colorScheme = kdeSettings.value(QStringLiteral("General/ColorScheme")).toString();
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if (colorScheme.contains(QStringLiteral("dark"), Qt::CaseInsensitive)) {
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return true;
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}
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if (colorScheme.contains(QStringLiteral("light"), Qt::CaseInsensitive)) {
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return false;
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}
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return paletteSuggestsDarkTheme();
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}
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void LinuxUtils::installThemeChangeObserver(std::function<void()> callback)
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{
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if (!callback) {
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return;
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}
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if (!g_themeObserver) {
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g_themeObserver = new LinuxThemeObserver(std::move(callback), qApp);
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return;
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}
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g_themeObserver->setCallback(std::move(callback));
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}
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#include "linuxutils.moc"
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