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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qgtk3portalinterface_p.h"
#include "qgtk3storage_p.h"
#include <QtDBus/QDBusArgument>
#include <QtDBus/QDBusConnection>
#include <QtDBus/QDBusMessage>
#include <QtDBus/QDBusPendingCall>
#include <QtDBus/QDBusPendingCallWatcher>
#include <QtDBus/QDBusPendingReply>
#include <QtDBus/QDBusVariant>
#include <QtDBus/QtDBus>
QT_BEGIN_NAMESPACE
Q_LOGGING_CATEGORY(lcQGtk3PortalInterface, "qt.qpa.gtk");
using namespace Qt::StringLiterals;
static constexpr QLatin1StringView appearanceInterface("org.freedesktop.appearance");
static constexpr QLatin1StringView colorSchemeKey("color-scheme");
const QDBusArgument &operator>>(const QDBusArgument &argument, QMap<QString, QVariantMap> &map)
{
argument.beginMap();
map.clear();
while (!argument.atEnd()) {
QString key;
QVariantMap value;
argument.beginMapEntry();
argument >> key >> value;
argument.endMapEntry();
map.insert(key, value);
}
argument.endMap();
return argument;
}
QGtk3PortalInterface::QGtk3PortalInterface(QGtk3Storage *s)
: m_storage(s) {
qRegisterMetaType<QDBusVariant>();
qDBusRegisterMetaType<QMap<QString, QVariantMap>>();
queryColorScheme();
if (!s) {
qCDebug(lcQGtk3PortalInterface) << "QGtk3PortalInterface instantiated without QGtk3Storage."
<< "No reaction to runtime theme changes.";
}
}
Qt::ColorScheme QGtk3PortalInterface::colorScheme() const
{
return m_colorScheme;
}
void QGtk3PortalInterface::queryColorScheme() {
QDBusConnection connection = QDBusConnection::sessionBus();
QDBusMessage message = QDBusMessage::createMethodCall(
"org.freedesktop.portal.Desktop"_L1,
"/org/freedesktop/portal/desktop"_L1,
"org.freedesktop.portal.Settings"_L1, "ReadAll"_L1);
message << QStringList{ appearanceInterface };
QDBusPendingCall pendingCall = connection.asyncCall(message);
QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(pendingCall, this);
QObject::connect(
watcher, &QDBusPendingCallWatcher::finished, this,
[this](QDBusPendingCallWatcher *watcher) {
QDBusPendingReply<QMap<QString, QVariantMap>> reply = *watcher;
if (reply.isValid()) {
QMap<QString, QVariantMap> settings = reply.value();
if (!settings.isEmpty()) {
settingChanged(appearanceInterface, colorSchemeKey,
QDBusVariant(settings.value(appearanceInterface).value(colorSchemeKey)));
}
} else {
qCDebug(lcQGtk3PortalInterface) << "Failed to query org.freedesktop.portal.Settings: "
<< reply.error().message();
}
watcher->deleteLater();
});
QDBusConnection::sessionBus().connect(
"org.freedesktop.portal.Desktop"_L1, "/org/freedesktop/portal/desktop"_L1,
"org.freedesktop.portal.Settings"_L1, "SettingChanged"_L1, this,
SLOT(settingChanged(QString, QString, QDBusVariant)));
}
void QGtk3PortalInterface::settingChanged(const QString &group, const QString &key,
const QDBusVariant &value)
{
if (group == appearanceInterface && key == colorSchemeKey) {
const uint colorScheme = value.variant().toUInt();
// From org.freedesktop.portal.Settings.xml
// "1" - Prefer dark appearance
Qt::ColorScheme newColorScheme = colorScheme == 1 ? Qt::ColorScheme::Dark : Qt::ColorScheme::Light;
if (m_colorScheme != newColorScheme) {
m_colorScheme = newColorScheme;
if (m_storage)
m_storage->handleThemeChange();
}
}
}
QT_END_NAMESPACE
#include "moc_qgtk3portalinterface_p.cpp"
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