[Linux] Implement proper disconnection detection (#95)

* [Linux] Implement proper disconection detection * Only trigger on airpod devices * Remove unused code * [Linux] Fix SegmentedControl text not shown in release build (but debug builds showed text)???
2026-01-31 15:19:11 +00:00 · 2025-04-14 23:25:02 +02:00
parent b1811770a3
commit e384840bcc
5 changed files with 156 additions and 108 deletions
--- a/linux/BluetoothMonitor.cpp
+++ b/linux/BluetoothMonitor.cpp
@@ -0,0 +1,93 @@
+#include "BluetoothMonitor.h"
+#include "logger.h"
+
+#include <QDebug>
+
+BluetoothMonitor::BluetoothMonitor(QObject *parent) 
+    : QObject(parent), m_dbus(QDBusConnection::systemBus())
+{
+    if (!m_dbus.isConnected())
+    {
+        LOG_WARN("Failed to connect to system D-Bus");
+        return;
+    }
+
+    registerDBusService();
+}
+
+BluetoothMonitor::~BluetoothMonitor()
+{
+    m_dbus.disconnectFromBus(m_dbus.name());
+}
+
+void BluetoothMonitor::registerDBusService()
+{
+    // Match signals for PropertiesChanged on any BlueZ Device interface
+    QString matchRule = QStringLiteral("type='signal',"
+                                       "interface='org.freedesktop.DBus.Properties',"
+                                       "member='PropertiesChanged',"
+                                       "path_namespace='/org/bluez'");
+
+    m_dbus.connect("org.freedesktop.DBus",
+                   "/org/freedesktop/DBus",
+                   "org.freedesktop.DBus",
+                   "AddMatch",
+                   this,
+                   SLOT(onPropertiesChanged(QString, QVariantMap, QStringList)));
+
+    if (!m_dbus.connect("", "", "org.freedesktop.DBus.Properties", "PropertiesChanged",
+                        this, SLOT(onPropertiesChanged(QString, QVariantMap, QStringList))))
+    {
+        LOG_WARN("Failed to connect to D-Bus PropertiesChanged signal");
+    }
+}
+
+void BluetoothMonitor::onPropertiesChanged(const QString &interface, const QVariantMap &changedProps, const QStringList &invalidatedProps)
+{
+    Q_UNUSED(invalidatedProps);
+
+    if (interface != "org.bluez.Device1")
+    {
+        return;
+    }
+
+    if (changedProps.contains("Connected"))
+    {
+        bool connected = changedProps["Connected"].toBool();
+        QString path = QDBusContext::message().path();
+
+        QDBusInterface deviceInterface("org.bluez", path, "org.freedesktop.DBus.Properties", m_dbus);
+        
+        // Get the device address
+        QDBusReply<QVariant> addrReply = deviceInterface.call("Get", "org.bluez.Device1", "Address");
+        if (!addrReply.isValid())
+        {
+            return;
+        }
+        QString macAddress = addrReply.value().toString();
+
+        // Get UUIDs to check if it's an AirPods device
+        QDBusReply<QVariant> uuidsReply = deviceInterface.call("Get", "org.bluez.Device1", "UUIDs");
+        if (!uuidsReply.isValid())
+        {
+            return;
+        }
+
+        QStringList uuids = uuidsReply.value().toStringList();
+        if (!uuids.contains("74ec2172-0bad-4d01-8f77-997b2be0722a"))
+        {
+            return; // Not an AirPods device
+        }
+
+        if (connected)
+        {
+            emit deviceConnected(macAddress);
+            LOG_DEBUG("AirPods device connected:" << macAddress);
+        }
+        else
+        {
+            emit deviceDisconnected(macAddress);
+            LOG_DEBUG("AirPods device disconnected:" << macAddress);
+        }
+    }
+}