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| 1 | +// Copyright (C) 2025 The Qt Company Ltd. |
| 2 | +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | + |
| 4 | +#include "qgnomeportalinterface_p.h" |
| 5 | +#include "qdbussettings_p.h" |
| 6 | +#include <private/qdbusplatformmenu_p.h> |
| 7 | +#include <QtDBus/QDBusMessage> |
| 8 | +#include <QtDBus/QDBusPendingCall> |
| 9 | +#include <QtDBus/QDBusReply> |
| 10 | +#include <QtDBus/QDBusVariant> |
| 11 | + |
| 12 | +QT_BEGIN_NAMESPACE |
| 13 | + |
| 14 | +#if QT_CONFIG(dbus) |
| 15 | +Q_STATIC_LOGGING_CATEGORY(lcQpaThemeGnome, "qt.qpa.theme.gnome") |
| 16 | +#endif // QT_CONFIG(dbus) |
| 17 | + |
| 18 | +using namespace Qt::StringLiterals; |
| 19 | + |
| 20 | +QGnomePortalInterface::QGnomePortalInterface(QObject *parent) |
| 21 | + : QObject(parent), m_dbus{ new QDBusListener } |
| 22 | +{ |
| 23 | + QObject::connect(m_dbus.get(), &QDBusListener::settingChanged, this, |
| 24 | + &QGnomePortalInterface::dbusSettingChanged); |
| 25 | + |
| 26 | + querySettings(); |
| 27 | +} |
| 28 | + |
| 29 | +/*! |
| 30 | + \internal |
| 31 | + \brief QGnomePortalInterface::colorScheme |
| 32 | + This is a getter method for the color-scheme loaded from the DBus portal. |
| 33 | + \param fallback indicates the fallback color-scheme. |
| 34 | + \return returns the cached color-scheme. If the color-scheme was not loaded |
| 35 | + it returns the \a fallback color-scheme. |
| 36 | + */ |
| 37 | +Qt::ColorScheme QGnomePortalInterface::colorScheme(Qt::ColorScheme fallback) const |
| 38 | +{ |
| 39 | + if (!m_colorScheme.has_value()) |
| 40 | + return fallback; |
| 41 | + return m_colorScheme.value(); |
| 42 | +} |
| 43 | + |
| 44 | +/*! |
| 45 | + \internal |
| 46 | + \brief QGnomePortalInterface::contrastPreference |
| 47 | + This is a getter method for the contrast-preference loaded from the DBus portal. |
| 48 | + \param fallback indicates the fallback contrast-preference. |
| 49 | + \return returns the cached contrast-preference if it was loaded. Otherwise, |
| 50 | + returns the \a fallback contrast-preference. |
| 51 | + */ |
| 52 | +Qt::ContrastPreference |
| 53 | +QGnomePortalInterface::contrastPreference(Qt::ContrastPreference fallback) const |
| 54 | +{ |
| 55 | + if (!m_contrast.has_value()) |
| 56 | + return fallback; |
| 57 | + return m_contrast.value(); |
| 58 | +} |
| 59 | + |
| 60 | +void QGnomePortalInterface::querySettings() |
| 61 | +{ |
| 62 | + QDBusConnection dbus = QDBusConnection::sessionBus(); |
| 63 | + if (!dbus.isConnected()) { |
| 64 | + qCWarning(lcQpaThemeGnome) << "dbus connection failed. Last error: " << dbus.lastError(); |
| 65 | + return; |
| 66 | + } |
| 67 | + |
| 68 | + constexpr auto method = "ReadAll"_L1; |
| 69 | + auto message = QDBusMessage::createMethodCall(s_service, s_path, s_interface, method); |
| 70 | + |
| 71 | + message << QStringList{ QDBusSettings::XdgSettings::AppearanceNamespace, |
| 72 | + QDBusSettings::GnomeSettings::AllyNamespace }; |
| 73 | + |
| 74 | + QDBusPendingCall pendingCall = dbus.asyncCall(message); |
| 75 | + QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(pendingCall, this); |
| 76 | + |
| 77 | + auto onWatcherFinished = [&](QDBusPendingCallWatcher *watcher) { |
| 78 | + const QDBusMessage reply = watcher->reply(); |
| 79 | + if (QDBusMessage::ErrorMessage == reply.type()) { |
| 80 | + qCWarning(lcQpaThemeGnome) |
| 81 | + << "dbus reply error: [" << reply.errorName() << "]" << reply.errorMessage(); |
| 82 | + watcher->deleteLater(); |
| 83 | + return; |
| 84 | + } |
| 85 | + |
| 86 | + const auto convertXdgColorScheme = [](const QVariant &value) { |
| 87 | + using namespace QDBusSettings::XdgSettings; |
| 88 | + return QVariant::fromValue(convertColorScheme(value)); |
| 89 | + }; |
| 90 | + |
| 91 | + constexpr auto XdgContrastKey = QDBusSettings::XdgSettings::ContrastKey; |
| 92 | + const auto convertXdgContrast = [](const QVariant &value) { |
| 93 | + using namespace QDBusSettings::XdgSettings; |
| 94 | + return QVariant::fromValue(convertContrastPreference(value)); |
| 95 | + }; |
| 96 | + |
| 97 | + constexpr auto GnomeContrastKey = QDBusSettings::GnomeSettings::ContrastKey; |
| 98 | + const auto convrtGnomeContrast = [](const QVariant &value) { |
| 99 | + using namespace QDBusSettings::GnomeSettings; |
| 100 | + return QVariant::fromValue(convertContrastPreference(value)); |
| 101 | + }; |
| 102 | + |
| 103 | + const QVariantList &args = reply.arguments(); |
| 104 | + for (const QVariant &arg_ : args) { |
| 105 | + const QMap<QString, QVariantMap> arg = qdbus_cast<QMap<QString, QVariantMap>>(arg_); |
| 106 | + for (auto aIt = arg.begin(); aIt != arg.end(); ++aIt) { |
| 107 | + const QString &namespace_ = aIt.key(); |
| 108 | + const QVariantMap &settings = aIt.value(); |
| 109 | + for (auto sIt = settings.begin(); sIt != settings.end(); ++sIt) { |
| 110 | + const QString &key = sIt.key(); |
| 111 | + const QVariant &value = sIt.value(); |
| 112 | + if ((key == QDBusSettings::XdgSettings::ColorSchemeKey) |
| 113 | + && (namespace_ == QDBusSettings::XdgSettings::AppearanceNamespace)) |
| 114 | + dbusSettingChanged(QDBusListener::Provider::Gnome, |
| 115 | + QDBusListener::Setting::ColorScheme, |
| 116 | + convertXdgColorScheme(value)); |
| 117 | + else if ((key == XdgContrastKey) |
| 118 | + && (namespace_ == QDBusSettings::XdgSettings::AppearanceNamespace)) |
| 119 | + dbusSettingChanged(QDBusListener::Provider::Gnome, |
| 120 | + QDBusListener::Setting::Contrast, |
| 121 | + convertXdgContrast(value)); |
| 122 | + else if ((key == GnomeContrastKey) |
| 123 | + && (namespace_ == QDBusSettings::GnomeSettings::AllyNamespace)) |
| 124 | + dbusSettingChanged(QDBusListener::Provider::Gnome, |
| 125 | + QDBusListener::Setting::Contrast, |
| 126 | + convrtGnomeContrast(value)); |
| 127 | + } |
| 128 | + } |
| 129 | + } |
| 130 | + watcher->deleteLater(); |
| 131 | + }; |
| 132 | + connect(watcher, &QDBusPendingCallWatcher::finished, this, onWatcherFinished); |
| 133 | +} |
| 134 | + |
| 135 | +void QGnomePortalInterface::updateColorScheme(Qt::ColorScheme colorScheme) |
| 136 | +{ |
| 137 | + if (m_colorScheme.has_value() && (m_colorScheme.value() == colorScheme)) |
| 138 | + return; |
| 139 | + m_colorScheme = colorScheme; |
| 140 | + emit colorSchemeChanged(colorScheme); |
| 141 | +} |
| 142 | + |
| 143 | +void QGnomePortalInterface::updateContrast(Qt::ContrastPreference contrast) |
| 144 | +{ |
| 145 | + if (m_contrast.has_value() && (m_contrast.value() == contrast)) |
| 146 | + return; |
| 147 | + m_contrast = contrast; |
| 148 | + emit contrastChanged(contrast); |
| 149 | +} |
| 150 | + |
| 151 | +void QGnomePortalInterface::dbusSettingChanged(QDBusListener::Provider provider, |
| 152 | + QDBusListener::Setting setting, |
| 153 | + const QVariant &value) |
| 154 | +{ |
| 155 | + if (provider != QDBusListener::Provider::Gnome && provider != QDBusListener::Provider::Gtk) |
| 156 | + return; |
| 157 | + |
| 158 | + switch (setting) { |
| 159 | + case QDBusListener::Setting::ColorScheme: |
| 160 | + updateColorScheme(value.value<Qt::ColorScheme>()); |
| 161 | + break; |
| 162 | + case QDBusListener::Setting::Contrast: |
| 163 | + updateContrast(value.value<Qt::ContrastPreference>()); |
| 164 | + break; |
| 165 | + case QDBusListener::Setting::Theme: |
| 166 | + emit themeNameChanged(value.toString()); |
| 167 | + break; |
| 168 | + default: |
| 169 | + break; |
| 170 | + } |
| 171 | +} |
| 172 | + |
| 173 | +QT_END_NAMESPACE |
| 174 | + |
| 175 | +#include "moc_qgnomeportalinterface_p.cpp" |
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