| 1 | // Copyright (C) 2024 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | // |
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| 5 | // W A R N I N G |
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| 6 | // ------------- |
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| 7 | // |
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| 8 | // This file is not part of the Qt API. It exists purely as an |
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| 9 | // implementation detail. This header file may change from version to |
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| 10 | // version without notice, or even be removed. |
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| 11 | // |
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| 12 | // We mean it. |
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| 13 | // |
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| 14 | |
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| 15 | #include "qgtk3portalinterface_p.h" |
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| 16 | #include "qgtk3storage_p.h" |
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| 17 | |
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| 18 | #include <QtDBus/QDBusArgument> |
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| 19 | #include <QtDBus/QDBusConnection> |
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| 20 | #include <QtDBus/QDBusMessage> |
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| 21 | #include <QtDBus/QDBusPendingCall> |
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| 22 | #include <QtDBus/QDBusPendingCallWatcher> |
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| 23 | #include <QtDBus/QDBusPendingReply> |
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| 24 | #include <QtDBus/QDBusVariant> |
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| 25 | #include <QtDBus/QtDBus> |
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| 26 | |
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| 27 | QT_BEGIN_NAMESPACE |
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| 28 | |
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| 29 | Q_LOGGING_CATEGORY(lcQGtk3PortalInterface, "qt.qpa.gtk" ); |
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| 30 | |
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| 31 | using namespace Qt::StringLiterals; |
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| 32 | |
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| 33 | static constexpr QLatin1StringView appearanceInterface("org.freedesktop.appearance" ); |
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| 34 | static constexpr QLatin1StringView colorSchemeKey("color-scheme" ); |
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| 35 | |
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| 36 | const QDBusArgument &operator>>(const QDBusArgument &argument, QMap<QString, QVariantMap> &map) |
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| 37 | { |
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| 38 | argument.beginMap(); |
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| 39 | map.clear(); |
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| 40 | |
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| 41 | while (!argument.atEnd()) { |
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| 42 | QString key; |
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| 43 | QVariantMap value; |
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| 44 | argument.beginMapEntry(); |
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| 45 | argument >> key >> value; |
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| 46 | argument.endMapEntry(); |
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| 47 | map.insert(key, value); |
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| 48 | } |
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| 49 | |
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| 50 | argument.endMap(); |
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| 51 | return argument; |
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| 52 | } |
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| 53 | |
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| 54 | QGtk3PortalInterface::QGtk3PortalInterface(QGtk3Storage *s) |
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| 55 | : m_storage(s) { |
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| 56 | qRegisterMetaType<QDBusVariant>(); |
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| 57 | qDBusRegisterMetaType<QMap<QString, QVariantMap>>(); |
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| 58 | |
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| 59 | queryColorScheme(); |
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| 60 | |
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| 61 | if (!s) { |
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| 62 | qCDebug(lcQGtk3PortalInterface) << "QGtk3PortalInterface instantiated without QGtk3Storage." |
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| 63 | << "No reaction to runtime theme changes." ; |
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| 64 | } |
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| 65 | } |
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| 66 | |
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| 67 | Qt::ColorScheme QGtk3PortalInterface::colorScheme() const |
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| 68 | { |
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| 69 | return m_colorScheme; |
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| 70 | } |
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| 71 | |
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| 72 | void QGtk3PortalInterface::queryColorScheme() { |
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| 73 | QDBusConnection connection = QDBusConnection::sessionBus(); |
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| 74 | QDBusMessage message = QDBusMessage::createMethodCall( |
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| 75 | destination: "org.freedesktop.portal.Desktop"_L1 , |
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| 76 | path: "/org/freedesktop/portal/desktop"_L1 , |
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| 77 | interface: "org.freedesktop.portal.Settings"_L1 , method: "ReadAll"_L1 ); |
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| 78 | message << QStringList{ appearanceInterface }; |
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| 79 | |
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| 80 | QDBusPendingCall pendingCall = connection.asyncCall(message); |
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| 81 | QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(pendingCall, this); |
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| 82 | QObject::connect( |
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| 83 | sender: watcher, signal: &QDBusPendingCallWatcher::finished, context: this, |
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| 84 | slot: [this](QDBusPendingCallWatcher *watcher) { |
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| 85 | QDBusPendingReply<QMap<QString, QVariantMap>> reply = *watcher; |
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| 86 | if (reply.isValid()) { |
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| 87 | QMap<QString, QVariantMap> settings = reply.value(); |
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| 88 | if (!settings.isEmpty()) { |
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| 89 | settingChanged(group: appearanceInterface, key: colorSchemeKey, |
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| 90 | value: QDBusVariant(settings.value(key: appearanceInterface).value(key: colorSchemeKey))); |
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| 91 | } |
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| 92 | } else { |
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| 93 | qCDebug(lcQGtk3PortalInterface) << "Failed to query org.freedesktop.portal.Settings: " |
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| 94 | << reply.error().message(); |
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| 95 | } |
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| 96 | watcher->deleteLater(); |
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| 97 | }); |
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| 98 | |
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| 99 | QDBusConnection::sessionBus().connect( |
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| 100 | service: "org.freedesktop.portal.Desktop"_L1 , path: "/org/freedesktop/portal/desktop"_L1 , |
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| 101 | interface: "org.freedesktop.portal.Settings"_L1 , name: "SettingChanged"_L1 , receiver: this, |
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| 102 | SLOT(settingChanged(QString, QString, QDBusVariant))); |
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| 103 | } |
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| 104 | |
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| 105 | void QGtk3PortalInterface::settingChanged(const QString &group, const QString &key, |
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| 106 | const QDBusVariant &value) |
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| 107 | { |
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| 108 | if (group == appearanceInterface && key == colorSchemeKey) { |
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| 109 | const uint colorScheme = value.variant().toUInt(); |
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| 110 | // From org.freedesktop.portal.Settings.xml |
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| 111 | // "1" - Prefer dark appearance |
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| 112 | Qt::ColorScheme newColorScheme = colorScheme == 1 ? Qt::ColorScheme::Dark : Qt::ColorScheme::Light; |
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| 113 | if (m_colorScheme != newColorScheme) { |
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| 114 | m_colorScheme = newColorScheme; |
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| 115 | if (m_storage) |
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| 116 | m_storage->handleThemeChange(); |
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| 117 | } |
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| 118 | } |
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| 119 | } |
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| 120 | |
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| 121 | QT_END_NAMESPACE |
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| 122 | |
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| 123 | #include "moc_qgtk3portalinterface_p.cpp" |
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| 124 | |
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