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authorroot <root@rshg054.dnsready.net>2013-08-13 01:33:19 -0700
committerroot <root@rshg054.dnsready.net>2013-08-13 01:33:19 -0700
commit7a65a910b77ad191d69881098c47f9b0c852d92e (patch)
tree9564e611af1442f8952a8cbddb3b0ad25ed71aab /community/lxsession
parent60da6abff6c9577a783d72865f11de7a585e912e (diff)
Tue Aug 13 01:31:08 PDT 2013
Diffstat (limited to 'community/lxsession')
-rw-r--r--community/lxsession/PKGBUILD38
-rw-r--r--community/lxsession/lxsession-0.4.6.1-logind-support.patch608
2 files changed, 646 insertions, 0 deletions
diff --git a/community/lxsession/PKGBUILD b/community/lxsession/PKGBUILD
new file mode 100644
index 000000000..5e4d01536
--- /dev/null
+++ b/community/lxsession/PKGBUILD
@@ -0,0 +1,38 @@
+# $Id: PKGBUILD 95018 2013-08-03 12:52:23Z bpiotrowski $
+# Maintainer: Bartłomiej Piotrowski <nospam@bpiotrowski.pl>
+# Contributor: Angel Velasquez <angvp@archlinux.org>
+# Contributor: Juergen Hoetzel <juergen@archlinux.org>
+
+pkgname=lxsession
+pkgver=0.4.6.1
+pkgrel=1
+epoch=1
+pkgdesc='Lightweight X11 session manager'
+arch=('i686' 'x86_64')
+url="http://lxde.org/"
+license=('GPL2')
+groups=('lxde')
+depends=('gtk2' 'dbus')
+makedepends=('pkgconfig' 'intltool')
+replaces=('lxde-settings-daemon' 'lxsession-lite')
+conflicts=('lxsession-lite' 'lxde-settings-daemon')
+source=(http://downloads.sourceforge.net/lxde/$pkgname-$pkgver.tar.gz
+ lxsession-0.4.6.1-logind-support.patch)
+md5sums=('e456b64c5ab3652a4dec661ec706dc6e'
+ 'd99fb337cba343306df71c85034def3b')
+
+prepare() {
+ cd $pkgname-$pkgver
+ patch -Np1 -i ../lxsession-0.4.6.1-logind-support.patch
+}
+
+build() {
+ cd $pkgname-$pkgver
+ ./configure --sysconfdir=/etc --prefix=/usr
+ make
+}
+
+package() {
+ cd $pkgname-$pkgver
+ make DESTDIR="$pkgdir" install
+}
diff --git a/community/lxsession/lxsession-0.4.6.1-logind-support.patch b/community/lxsession/lxsession-0.4.6.1-logind-support.patch
new file mode 100644
index 000000000..2c12a01c5
--- /dev/null
+++ b/community/lxsession/lxsession-0.4.6.1-logind-support.patch
@@ -0,0 +1,608 @@
+--- lxsession-0.4.6.1/lxsession-logout/dbus-interface.c 2011-07-27 21:26:36.000000000 +0200
++++ lxsession-0.4.6.1/lxsession-logout-logind/dbus-interface.c 2012-11-13 17:26:30.807070976 +0100
+@@ -51,13 +51,20 @@
+ char * dbus_HAL_Reboot(void);
+ char * dbus_HAL_Suspend(void);
+ char * dbus_HAL_Hibernate(void);
++gboolean dbus_logind_CanPowerOff(void);
++gboolean dbus_logind_CanReboot(void);
++gboolean dbus_logind_CanSuspend(void);
++gboolean dbus_logind_CanHibernate(void);
++char * dbus_logind_PowerOff(void);
++char * dbus_logind_Reboot(void);
++char * dbus_logind_Suspend(void);
++char * dbus_logind_Hibernate(void);
++char * dbus_LXDE_Logout(void);
+ /* End FORWARDS */
+
+ /* Connect to the system bus. Once a connection is made, it is saved for reuse. */
+-static DBusConnection * dbus_connect(void)
++static DBusConnection * dbus_connect_system(void)
+ {
+- if ((dbus_context.connection == NULL) && ( ! dbus_context.connection_tried))
+- {
+ DBusError error;
+ dbus_error_init(&error);
+ dbus_context.connection = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
+@@ -67,16 +74,57 @@
+ dbus_error_free(&error);
+ }
+ dbus_context.connection_tried = TRUE;
+- }
+
+ return dbus_context.connection;
+ }
+
++static DBusConnection * dbus_connect_session(void)
++{
++ DBusError error;
++ dbus_error_init(&error);
++ dbus_context.connection = dbus_bus_get(DBUS_BUS_SESSION, &error);
++ if (dbus_context.connection == NULL)
++ {
++ g_warning(G_STRLOC ": Failed to connect to the session message bus: %s", error.message);
++ dbus_error_free(&error);
++ }
++ dbus_context.connection_tried = TRUE;
++
++ return dbus_context.connection;
++}
++
++
+ /* Send a message. */
+-static DBusMessage * dbus_send_message(DBusMessage * message, char * * error_text)
++static DBusMessage * dbus_send_message_system(DBusMessage * message, char * * error_text)
+ {
+ /* Get a connection handle. */
+- DBusConnection * connection = dbus_connect();
++ DBusConnection * connection = dbus_connect_system();
++ if (connection == NULL)
++ return FALSE;
++
++ /* Send the message. */
++ DBusError error;
++ dbus_error_init(&error);
++ DBusMessage * reply = dbus_connection_send_with_reply_and_block(connection, message, DBUS_TIMEOUT, &error);
++ dbus_message_unref(message);
++ if (reply == NULL)
++ {
++ if ((error.name == NULL) || (strcmp(error.name, DBUS_ERROR_NO_REPLY) != 0))
++ {
++ if (error_text != NULL)
++ *error_text = g_strdup(error.message);
++ g_warning(G_STRLOC ": DBUS: %s", error.message);
++ }
++ dbus_error_free(&error);
++ }
++ return reply;
++}
++
++/* Send a message. */
++static DBusMessage * dbus_send_message_session(DBusMessage * message, char * * error_text)
++{
++ /* Get a connection handle. */
++ DBusConnection * connection = dbus_connect_session();
+ if (connection == NULL)
+ return FALSE;
+
+@@ -132,6 +180,36 @@
+ }
+ return result;
+ }
++
++/* Read a result for a method that returns a string encoded boolean. */
++static gboolean dbus_read_result_sboolean(DBusMessage * reply)
++{
++ gboolean result = FALSE;
++ char* string_result;
++ if (reply != NULL)
++ {
++ /* Get the string result. */
++ DBusError error;
++ dbus_error_init(&error);
++ dbus_bool_t status = dbus_message_get_args(
++ reply,
++ &error,
++ DBUS_TYPE_STRING, &string_result,
++ DBUS_TYPE_INVALID);
++ if ( ! status)
++ {
++ g_warning(G_STRLOC ": DBUS: %s", error.message);
++ dbus_error_free(&error);
++ }
++ else
++ {
++ if (!strcmp(string_result, "yes"))
++ result = TRUE;
++ }
++ dbus_message_unref(reply);
++ }
++ return result;
++}
+ #endif
+
+ /*** ConsoleKit mechanism ***/
+@@ -152,7 +230,7 @@
+ static gboolean dbus_ConsoleKit_query(const char * const query)
+ {
+ #ifdef HAVE_DBUS
+- return dbus_read_result_boolean(dbus_send_message(dbus_ConsoleKit_formulate_message(query), NULL));
++ return dbus_read_result_boolean(dbus_send_message_system(dbus_ConsoleKit_formulate_message(query), NULL));
+ #else
+ return FALSE;
+ #endif
+@@ -163,7 +241,7 @@
+ {
+ #ifdef HAVE_DBUS
+ char * error = NULL;
+- dbus_read_result_void(dbus_send_message(dbus_ConsoleKit_formulate_message(command), &error));
++ dbus_read_result_void(dbus_send_message_system(dbus_ConsoleKit_formulate_message(command), &error));
+ return error;
+ #else
+ return NULL;
+@@ -225,7 +303,7 @@
+ DBUS_TYPE_INVALID);
+
+ /* Send the message. */
+- DBusMessage * reply = dbus_send_message(message, NULL);
++ DBusMessage * reply = dbus_send_message_system(message, NULL);
+ if (reply == NULL)
+ return FALSE;
+
+@@ -252,7 +330,7 @@
+ {
+ #ifdef HAVE_DBUS
+ char * error = NULL;
+- dbus_read_result_void(dbus_send_message(dbus_UPower_formulate_command(command), &error));
++ dbus_read_result_void(dbus_send_message_system(dbus_UPower_formulate_command(command), &error));
+ return error;
+ #else
+ return NULL;
+@@ -329,7 +407,7 @@
+ DBusMessage * message = dbus_HAL_formulate_string_property_query(property);
+ if (message == NULL)
+ return FALSE;
+- DBusMessage * reply = dbus_send_message(message, NULL);
++ DBusMessage * reply = dbus_send_message_system(message, NULL);
+ if (reply == NULL)
+ return FALSE;
+ dbus_message_unref(reply);
+@@ -343,7 +421,7 @@
+ static gboolean dbus_HAL_boolean_query(const char * const property)
+ {
+ #ifdef HAVE_DBUS
+- return dbus_read_result_boolean(dbus_send_message(dbus_HAL_formulate_boolean_property_query(property), NULL));
++ return dbus_read_result_boolean(dbus_send_message_system(dbus_HAL_formulate_boolean_property_query(property), NULL));
+ #else
+ return FALSE;
+ #endif
+@@ -367,7 +445,7 @@
+
+ /* Send the message and wait for a reply. */
+ char * error = NULL;
+- dbus_read_result_void(dbus_send_message(message, &error));
++ dbus_read_result_void(dbus_send_message_system(message, &error));
+ return error;
+ #else
+ return NULL;
+@@ -421,3 +499,185 @@
+ {
+ return dbus_HAL_command("Hibernate");
+ }
++
++/*** logind mechanism ***/
++
++#ifdef HAVE_DBUS
++/* Formulate a message to the logind Manager interface to query a property. */
++static DBusMessage * dbus_logind_formulate_query(const char * const query)
++{
++ return dbus_message_new_method_call(
++ "org.freedesktop.login1",
++ "/org/freedesktop/login1",
++ "org.freedesktop.login1.Manager",
++ query);
++}
++
++/* Formulate a message to the logind Manager interface. */
++static DBusMessage * dbus_logind_formulate_message(const char * const method)
++{
++ static dbus_bool_t interactive = FALSE;
++ DBusMessage * message = dbus_message_new_method_call(
++ "org.freedesktop.login1",
++ "/org/freedesktop/login1",
++ "org.freedesktop.login1.Manager",
++ method);
++ if (message != NULL)
++ dbus_message_append_args(message, DBUS_TYPE_BOOLEAN, &interactive, DBUS_TYPE_INVALID);
++ return message;
++}
++#endif
++
++/* Send a specified query to the logind interface and process a boolean result. */
++static gboolean dbus_logind_query(const char * const query)
++{
++#ifdef HAVE_DBUS
++ return dbus_read_result_sboolean(dbus_send_message_system(dbus_logind_formulate_query(query), NULL));
++#else
++ return FALSE;
++#endif
++}
++
++/* Send a specified command to the logind interface and process a void result. */
++static char * dbus_logind_command(const char * const command)
++{
++#ifdef HAVE_DBUS
++ char * error = NULL;
++ dbus_read_result_void(dbus_send_message_system(dbus_logind_formulate_message(command), &error));
++ return error;
++#else
++ return NULL;
++#endif
++}
++
++/* Read the can-poweroff property of logind. */
++gboolean dbus_logind_CanPowerOff(void)
++{
++ return dbus_logind_query("CanPowerOff");
++}
++
++/* Read the can-reboot property of logind. */
++gboolean dbus_logind_CanReboot(void)
++{
++ return dbus_logind_query("CanReboot");
++}
++
++/* Read the can-suspend property of logind. */
++gboolean dbus_logind_CanSuspend(void)
++{
++ return dbus_logind_query("CanSuspend");
++}
++
++/* Read the can-hibernate property of logind. */
++gboolean dbus_logind_CanHibernate(void)
++{
++ return dbus_logind_query("CanHibernate");
++}
++
++/* Invoke the PowerOff method on logind. */
++char * dbus_logind_PowerOff(void)
++{
++ return dbus_logind_command("PowerOff");
++}
++
++/* Invoke the Reboot method on logind. */
++char * dbus_logind_Reboot(void)
++{
++ return dbus_logind_command("Reboot");
++}
++
++/* Invoke the Suspend method on logind. */
++char * dbus_logind_Suspend(void)
++{
++ return dbus_logind_command("Suspend");
++}
++
++/* Invoke the Hibernate method on logind. */
++char * dbus_logind_Hibernate(void)
++{
++ return dbus_logind_command("Hibernate");
++}
++
++/*** LXDE mechanism ***/
++
++#ifdef HAVE_DBUS
++/* Formulate a message to the LXDE Session Manager interface. */
++static DBusMessage * dbus_LXDE_formulate_message(const char * const query)
++{
++ return dbus_message_new_method_call(
++ "org.lxde.SessionManager",
++ "/org/lxde/SessionManager",
++ "org.lxde.SessionManager",
++ query);
++}
++#endif
++
++/* Send a specified message to the LXDE interface and process a boolean result. */
++static gboolean dbus_LXDE_query(const char * const query)
++{
++#ifdef HAVE_DBUS
++ return dbus_read_result_boolean(dbus_send_message_session(dbus_LXDE_formulate_message(query), NULL));
++#else
++ return FALSE;
++#endif
++}
++
++/* Send a specified message to the LXDE interface and process a void result. */
++static char * dbus_LXDE_command(const char * const command)
++{
++#ifdef HAVE_DBUS
++ char * error = NULL;
++ dbus_read_result_void(dbus_send_message_session(dbus_LXDE_formulate_message(command), &error));
++ return error;
++#else
++ return NULL;
++#endif
++}
++
++/* Invoke the Logout method on LXDE. */
++char * dbus_LXDE_Logout(void)
++{
++ return dbus_LXDE_command("Logout");
++}
++
++/*** Lightdm mechanism ***/
++
++#ifdef HAVE_DBUS
++/* Formulate a message to the Lightdm interface. */
++static DBusMessage * dbus_Lightdm_formulate_message(const char * const query)
++{
++ return dbus_message_new_method_call(
++ "org.freedesktop.DisplayManager",
++ g_getenv ("XDG_SEAT_PATH"),
++ "org.freedesktop.DisplayManager.Seat",
++ query);
++}
++#endif
++
++/* Send a specified message to the Lightdm interface and process a boolean result. */
++static gboolean dbus_Lightdm_query(const char * const query)
++{
++#ifdef HAVE_DBUS
++ return dbus_read_result_boolean(dbus_send_message_session(dbus_Lightdm_formulate_message(query), NULL));
++#else
++ return FALSE;
++#endif
++}
++
++/* Send a specified message to the Lightdm interface and process a void result. */
++static char * dbus_Lightdm_command(const char * const command)
++{
++#ifdef HAVE_DBUS
++ char * error = NULL;
++ dbus_read_result_void(dbus_send_message_session(dbus_Lightdm_formulate_message(command), &error));
++ return error;
++#else
++ return NULL;
++#endif
++}
++
++/* Invoke the Logout method on LXDE. */
++char * dbus_Lightdm_SwitchToGreeter(void)
++{
++ return dbus_Lightdm_command("SwitchToGreeter");
++}
+--- lxsession-0.4.6.1/lxsession-logout/dbus-interface.h 2011-07-27 21:26:36.000000000 +0200
++++ lxsession-0.4.6.1/lxsession-logout-logind/dbus-interface.h 2012-11-13 17:26:30.807070976 +0100
+@@ -44,4 +44,18 @@
+ extern char * dbus_HAL_Suspend(void);
+ extern char * dbus_HAL_Hibernate(void);
+
++/* Interface to logind for shutdown, reboot, suspend, and hibernate. */
++extern gboolean dbus_logind_CanPowerOff(void);
++extern gboolean dbus_logind_CanRestart(void);
++extern char * dbus_logind_PowerOff(void);
++extern char * dbus_logind_Restart(void);
++extern gboolean dbus_logind_CanSuspend(void);
++extern gboolean dbus_logind_CanHibernate(void);
++extern char * dbus_logind_Suspend(void);
++extern char * dbus_logind_Hibernate(void);
++
++extern char * dbus_LXDE_Logout(void);
++
++extern char * dbus_Lightdm_SwitchToGreeter();
++
+ #endif
+--- lxsession-0.4.6.1/lxsession-logout/lxsession-logout.c 2011-07-27 21:26:36.000000000 +0200
++++ lxsession-0.4.6.1/lxsession-logout-logind/lxsession-logout.c 2012-11-13 17:26:30.807070976 +0100
+@@ -69,12 +69,21 @@
+ int reboot_HAL : 1; /* Reboot is available via HAL */
+ int suspend_HAL : 1; /* Suspend is available via HAL */
+ int hibernate_HAL : 1; /* Hibernate is available via HAL */
++ int shutdown_logind : 1; /* Shutdown is available via logind */
++ int reboot_logind : 1; /* Reboot is available via logind */
++ int suspend_logind : 1; /* Suspend is available via logind */
++ int hibernate_logind : 1; /* Hibernate is available via logind */
+ int switch_user_GDM : 1; /* Switch User is available via GDM */
+- int switch_user_KDM : 1; /* Switch User is available via KDM */
++ int switch_user_LIGHTDM : 1; /* Switch User is available via GDM */
++ int switch_user_KDM : 1; /* Switch User is available via LIGHTDM */
+ int ltsp : 1; /* Shutdown and reboot is accomplished via LTSP */
++
++ int lock_screen : 1; /* Lock screen available */
++
+ } HandlerContext;
+
+ static gboolean lock_screen(void);
++static const gchar* determine_lock_screen(void);
+ static gboolean verify_running(const char * display_manager, const char * executable);
+ static void logout_clicked(GtkButton * button, HandlerContext * handler_context);
+ static void change_root_property(GtkWidget* w, const char* prop_name, const char* value);
+@@ -93,13 +102,32 @@
+ */
+ static gboolean lock_screen(void)
+ {
+- if (!g_spawn_command_line_async("lxlock", NULL))
++ const gchar* program = determine_lock_screen();
++
++ if (program)
+ {
++ g_spawn_command_line_async(program, NULL);
+ return TRUE;
+ }
+ return FALSE;
+ }
+
++static const gchar* determine_lock_screen(void)
++{
++ const gchar* program = NULL;
++
++ if (g_find_program_in_path("xdg-screensaver"))
++ {
++ program = "xdg-screensaver lock";
++ }
++ else if (g_find_program_in_path("lxlock"))
++ {
++ program = "lxlock";
++ }
++ return program;
++}
++
++
+ /* Verify that a program is running and that an executable is available. */
+ static gboolean verify_running(const char * display_manager, const char * executable)
+ {
+@@ -187,6 +215,8 @@
+ error_result = dbus_ConsoleKit_Stop();
+ else if (handler_context->shutdown_HAL)
+ error_result = dbus_HAL_Shutdown();
++ else if (handler_context->shutdown_logind)
++ error_result = dbus_logind_PowerOff();
+
+ if (error_result != NULL)
+ gtk_label_set_text(GTK_LABEL(handler_context->error_label), error_result);
+@@ -208,6 +238,8 @@
+ error_result = dbus_ConsoleKit_Restart();
+ else if (handler_context->reboot_HAL)
+ error_result = dbus_HAL_Reboot();
++ else if (handler_context->reboot_logind)
++ error_result = dbus_logind_Reboot();
+
+ if (error_result != NULL)
+ gtk_label_set_text(GTK_LABEL(handler_context->error_label), error_result);
+@@ -225,6 +257,8 @@
+ error_result = dbus_UPower_Suspend();
+ else if (handler_context->suspend_HAL)
+ error_result = dbus_HAL_Suspend();
++ else if (handler_context->suspend_logind)
++ error_result = dbus_logind_Suspend();
+
+ if (error_result != NULL)
+ gtk_label_set_text(GTK_LABEL(handler_context->error_label), error_result);
+@@ -242,6 +276,8 @@
+ error_result = dbus_UPower_Hibernate();
+ else if (handler_context->hibernate_HAL)
+ error_result = dbus_HAL_Hibernate();
++ else if (handler_context->hibernate_logind)
++ error_result = dbus_logind_Hibernate();
+
+ if (error_result != NULL)
+ gtk_label_set_text(GTK_LABEL(handler_context->error_label), error_result);
+@@ -258,6 +294,17 @@
+ g_spawn_command_line_sync("gdmflexiserver --startnew", NULL, NULL, NULL, NULL);
+ else if (handler_context->switch_user_KDM)
+ g_spawn_command_line_sync("kdmctl reserve", NULL, NULL, NULL, NULL);
++ else if (handler_context->switch_user_LIGHTDM)
++ dbus_Lightdm_SwitchToGreeter();
++ gtk_main_quit();
++}
++
++/* Handler for "clicked" signal on Lock button. */
++static void lock_screen_clicked(GtkButton * button, HandlerContext * handler_context)
++{
++ gtk_label_set_text(GTK_LABEL(handler_context->error_label), NULL);
++
++ lock_screen();
+ gtk_main_quit();
+ }
+
+@@ -435,6 +482,28 @@
+ handler_context.hibernate_HAL = TRUE;
+ }
+
++ /* Initialize capabilities of the logind mechanism. */
++ if (!handler_context.shutdown_available && dbus_logind_CanPowerOff())
++ {
++ handler_context.shutdown_available = TRUE;
++ handler_context.shutdown_logind = TRUE;
++ }
++ if (!handler_context.reboot_available && dbus_logind_CanReboot())
++ {
++ handler_context.reboot_available = TRUE;
++ handler_context.reboot_logind = TRUE;
++ }
++ if (!handler_context.suspend_available && dbus_logind_CanSuspend())
++ {
++ handler_context.suspend_available = TRUE;
++ handler_context.suspend_logind = TRUE;
++ }
++ if (!handler_context.hibernate_available && dbus_logind_CanHibernate())
++ {
++ handler_context.hibernate_available = TRUE;
++ handler_context.hibernate_logind = TRUE;
++ }
++
+ /* If we are under GDM, its "Switch User" is available. */
+ if (verify_running("gdm", "gdmflexiserver"))
+ {
+@@ -442,6 +511,34 @@
+ handler_context.switch_user_GDM = TRUE;
+ }
+
++ /* If we are under GDM3, its "Switch User" is available. */
++ if (verify_running("gdm3", "gdmflexiserver"))
++ {
++ handler_context.switch_user_available = TRUE;
++ handler_context.switch_user_GDM = TRUE;
++ }
++
++ /* lightdm also use gdmflexiserver */
++ if (verify_running("lightdm", "gdmflexiserver"))
++ {
++ handler_context.switch_user_available = TRUE;
++ handler_context.switch_user_GDM = TRUE;
++ }
++
++ /* lightdm also use gdmflexiserver */
++ if (verify_running("lightdm", "gdmflexiserver"))
++ {
++ handler_context.switch_user_available = TRUE;
++ handler_context.switch_user_GDM = TRUE;
++ }
++
++ /* lightdm can also be find by the env */
++ if (g_getenv("XDG_SEAT_PATH"))
++ {
++ handler_context.switch_user_available = TRUE;
++ handler_context.switch_user_LIGHTDM = TRUE;
++ }
++
+ /* If we are under KDM, its "Switch User" is available. */
+ if (verify_running("kdm", "kdmctl"))
+ {
+@@ -451,7 +548,18 @@
+
+ /* LTSP support */
+ if (g_getenv("LTSP_CLIENT"))
++ {
+ handler_context.ltsp = TRUE;
++ handler_context.shutdown_available = TRUE;
++ handler_context.reboot_available = TRUE;
++ }
++
++ /* Lock screen */
++ const gchar* very_lock_screen = determine_lock_screen();
++ if (very_lock_screen)
++ {
++ handler_context.lock_screen = TRUE;
++ }
+
+ /* Make the button images accessible. */
+ gtk_icon_theme_append_search_path(gtk_icon_theme_get_default(), PACKAGE_DATA_DIR "/lxsession/images");
+@@ -596,6 +704,17 @@
+ gtk_box_pack_start(GTK_BOX(controls), switch_user_button, FALSE, FALSE, 4);
+ }
+
++ /* Create the Lock Screen button. */
++ if (handler_context.lock_screen && !handler_context.ltsp)
++ {
++ GtkWidget * lock_screen_button = gtk_button_new_with_mnemonic(_("L_ock Screen"));
++ GtkWidget * image = gtk_image_new_from_icon_name("system-lock-screen", GTK_ICON_SIZE_BUTTON);
++ gtk_button_set_image(GTK_BUTTON(lock_screen_button), image);
++ gtk_button_set_alignment(GTK_BUTTON(lock_screen_button), 0.0, 0.5);
++ g_signal_connect(G_OBJECT(lock_screen_button), "clicked", G_CALLBACK(lock_screen_clicked), &handler_context);
++ gtk_box_pack_start(GTK_BOX(controls), lock_screen_button, FALSE, FALSE, 4);
++ }
++
+ /* Create the Logout button. */
+ GtkWidget * logout_button = gtk_button_new_with_mnemonic(_("_Logout"));
+ GtkWidget * image = gtk_image_new_from_icon_name("system-log-out", GTK_ICON_SIZE_BUTTON);