bar can now toggle bluetooth power and discovery

2025-12-22 01:41:01 +01:00
parent 0101ea1ec0
commit 5a429a3b8b
31 changed files with 507 additions and 114 deletions
--- a/src/services/bluetooth.cpp
+++ b/src/services/bluetooth.cpp
@@ -0,0 +1,185 @@
+#include "services/bluetooth.hpp"
+
+#include <cassert>
+#include <iostream>
+
+#include "glib.h"
+#include "sigc++/signal.h"
+
+BluetoothService::BluetoothService() {
+    GError *error = nullptr;
+
+    this->adapter_proxy = g_dbus_proxy_new_for_bus_sync(
+        G_BUS_TYPE_SYSTEM,
+        G_DBUS_PROXY_FLAGS_NONE,
+        nullptr,
+        "org.bluez",
+        "/org/bluez/hci0",
+        "org.bluez.Adapter1",
+        nullptr,
+        &error);
+
+    if (error) {
+        std::cerr << "Error creating Bluetooth adapter proxy: "
+                  << error->message << std::endl;
+        g_error_free(error);
+        assert(false);
+    } else {
+        std::cout << "Bluetooth adapter proxy created successfully." << std::endl;
+    }
+
+    this->powerState    = this->getPowerState();
+    this->isDiscovering = this->getIsDiscovering();
+
+    g_signal_connect(
+        this->adapter_proxy,
+        "g-properties-changed",
+        G_CALLBACK(BluetoothService::onPropertyChangedStatic),
+        this);
+}
+
+bool BluetoothService::getPowerState() {
+    GVariant *result = g_dbus_proxy_get_cached_property(
+        this->adapter_proxy,
+        "Powered");
+
+    if (!result) {
+        std::cerr << "Error getting Powered property." << std::endl;
+        return false;
+    }
+
+    gboolean powered;
+    g_variant_get(result, "b", &powered);
+    g_variant_unref(result);
+
+    return powered;
+}
+
+bool BluetoothService::getIsDiscovering() {
+    GVariant *result = g_dbus_proxy_get_cached_property(
+        this->adapter_proxy,
+        "Discovering");
+
+    if (!result) {
+        std::cerr << "Error getting Discovering property." << std::endl;
+        return false;
+    }
+
+    gboolean discovering;
+    g_variant_get(result, "b", &discovering);
+    g_variant_unref(result);
+
+    return discovering;
+}
+
+void BluetoothService::setPowerState(bool state) {
+    GError *error = nullptr;
+
+    GDBusConnection *connection = g_dbus_proxy_get_connection(this->adapter_proxy);
+    GVariant *reply             = g_dbus_connection_call_sync(
+        connection,
+        "org.bluez",
+        "/org/bluez/hci0",
+        "org.freedesktop.DBus.Properties",
+        "Set",
+        g_variant_new(
+            "(ssv)",
+            "org.bluez.Adapter1",
+            "Powered",
+            g_variant_new_boolean(state)),
+        nullptr,
+        G_DBUS_CALL_FLAGS_NONE,
+        -1,
+        nullptr,
+        &error);
+
+    if (error) {
+        std::cerr << "Error setting Powered property: "
+                  << error->message << std::endl;
+        g_error_free(error);
+    }
+
+    if (reply) {
+        g_variant_unref(reply);
+    }
+
+    if (!error) {
+        this->powerState = state;
+    }
+}
+
+void BluetoothService::setIsDiscovering(bool state) {
+    const bool currently_discovering = this->getIsDiscovering();
+    this->isDiscovering              = currently_discovering;
+
+    if (currently_discovering == state) {
+        return;
+    }
+
+    GError *error = nullptr;
+
+    const char *method = state ? "StartDiscovery" : "StopDiscovery";
+    GVariant *reply    = g_dbus_proxy_call_sync(
+        this->adapter_proxy,
+        method,
+        nullptr,
+        G_DBUS_CALL_FLAGS_NONE,
+        -1,
+        nullptr,
+        &error);
+
+    if (error) {
+        std::cerr << "Error calling " << method << ": "
+                  << error->message << std::endl;
+        g_error_free(error);
+
+        if (reply) {
+            g_variant_unref(reply);
+        }
+        
+        return;
+    }
+
+    this->isDiscovering = state;
+
+    if (reply) {
+        g_variant_unref(reply);
+    }
+}
+
+void BluetoothService::onPropertyChanged(GDBusProxy *proxy,
+                                         GVariant *changed_properties,
+                                         const gchar *const *invalidated_properties,
+                                         gpointer user_data) {
+
+    gboolean is_powered     = FALSE;
+    gboolean is_discovering = FALSE;
+
+    if (g_variant_lookup(changed_properties, "Powered", "b", &is_powered)) {
+
+        this->setIsDiscovering(false);
+        isDiscoveringChangedSignal.emit(isDiscovering);
+
+        this->powerState = is_powered;
+        powerStateChangedSignal.emit(powerState);
+    }
+
+    if (g_variant_lookup(changed_properties, "Discovering", "b", &is_discovering)) {
+        this->isDiscovering = is_discovering;
+        isDiscoveringChangedSignal.emit(isDiscovering);
+    }
+}
+
+void BluetoothService::onPropertyChangedStatic(GDBusProxy *proxy,
+                                               GVariant *changed_properties,
+                                               const gchar *const *invalidated_properties,
+                                               gpointer user_data) {
+    BluetoothService *service = static_cast<BluetoothService *>(user_data);
+
+    if (service) {
+        service->onPropertyChanged(proxy, changed_properties, invalidated_properties, user_data);
+    } else {
+        std::cerr << "Error: BluetoothService instance is null in static callback." << std::endl;
+        assert(false);
+    }
+}