84 lines
2.1 KiB
C++
84 lines
2.1 KiB
C++
#include "lidwatcher.hpp"
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#include <QtDBus/QDBusConnection>
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#include <QtDBus/QDBusMessage>
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#include <QtDBus/QDBusReply>
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#include <QLoggingCategory>
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Q_LOGGING_CATEGORY(lcLidWatcher, "ZShell.lidwatcher", QtInfoMsg)
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namespace ZShell {
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static constexpr auto kLogin1Service = "org.freedesktop.login1";
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static constexpr auto kLogin1Path = "/org/freedesktop/login1";
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static constexpr auto kLogin1Interface = "org.freedesktop.login1.Manager";
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static constexpr auto kDBusPropertiesInterface =
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"org.freedesktop.DBus.Properties";
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LidWatcher::LidWatcher(QObject* parent) : QObject(parent), m_available(false) {
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QDBusConnection bus = QDBusConnection::systemBus();
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m_available = bus.isConnected();
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if (!m_available) {
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qCWarning(lcLidWatcher) << "system bus unavailable";
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emit availableChanged();
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return;
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}
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const auto ok = bus.connect(
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kLogin1Service,
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kLogin1Path,
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kDBusPropertiesInterface,
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"PropertiesChanged",
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this,
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SLOT(onPropertiesChanged(QString, QVariantMap, QStringList)));
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m_available = ok;
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emit availableChanged();
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if (!m_available) {
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qCWarning(lcLidWatcher) << "login1 properties signal unavailable";
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return;
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}
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queryInitialState();
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}
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bool LidWatcher::available() const {
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return m_available;
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}
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LidWatcher::LidState LidWatcher::state() const {
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return m_state;
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}
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void LidWatcher::queryInitialState() {
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auto msg = QDBusMessage::createMethodCall(kLogin1Service,
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kLogin1Path,
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kDBusPropertiesInterface,
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"Get");
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msg << kLogin1Interface << "LidClosed";
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const QDBusReply<QVariant> reply = QDBusConnection::systemBus().call(msg);
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if (!reply.isValid()) {
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qCWarning(lcLidWatcher)
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<< "cannot query LidClosed:" << reply.error().message();
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return;
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}
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m_state = reply.value().toBool() ? Closed : Opened;
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emit stateChanged();
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}
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void LidWatcher::onPropertiesChanged(const QString& interface,
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const QVariantMap& changed,
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const QStringList& ) {
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if (interface != kLogin1Interface) {
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return;
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}
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if (!changed.contains("LidClosed")) {
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return;
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}
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m_state = changed.value("LidClosed").toBool() ? Closed : Opened;
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emit stateChanged();
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}
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} // namespace ZShell
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