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-rw-r--r--applets/notification_area/na-tray-manager.c859
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diff --git a/applets/notification_area/na-tray-manager.c b/applets/notification_area/na-tray-manager.c
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+++ b/applets/notification_area/na-tray-manager.c
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+/* na-tray-manager.c
+ * Copyright (C) 2002 Anders Carlsson <[email protected]>
+ * Copyright (C) 2003-2006 Vincent Untz
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Used to be: eggtraymanager.c
+ */
+
+#include <config.h>
+#include <string.h>
+#include <libintl.h>
+
+#include "na-tray-manager.h"
+
+#include <gdkconfig.h>
+#include <glib/gi18n.h>
+#if defined (GDK_WINDOWING_X11)
+#include <gdk/gdkx.h>
+#include <X11/Xatom.h>
+#elif defined (GDK_WINDOWING_WIN32)
+#include <gdk/gdkwin32.h>
+#endif
+#include <gtk/gtk.h>
+
+#include "na-marshal.h"
+
+/* Signals */
+enum
+{
+ TRAY_ICON_ADDED,
+ TRAY_ICON_REMOVED,
+ MESSAGE_SENT,
+ MESSAGE_CANCELLED,
+ LOST_SELECTION,
+ LAST_SIGNAL
+};
+
+enum {
+ PROP_0,
+ PROP_ORIENTATION
+};
+
+typedef struct
+{
+ long id, len;
+ long remaining_len;
+
+ long timeout;
+ char *str;
+#ifdef GDK_WINDOWING_X11
+ Window window;
+#endif
+} PendingMessage;
+
+static guint manager_signals[LAST_SIGNAL];
+
+#define SYSTEM_TRAY_REQUEST_DOCK 0
+#define SYSTEM_TRAY_BEGIN_MESSAGE 1
+#define SYSTEM_TRAY_CANCEL_MESSAGE 2
+
+#define SYSTEM_TRAY_ORIENTATION_HORZ 0
+#define SYSTEM_TRAY_ORIENTATION_VERT 1
+
+#ifdef GDK_WINDOWING_X11
+static gboolean na_tray_manager_check_running_screen_x11 (GdkScreen *screen);
+#endif
+
+static void na_tray_manager_finalize (GObject *object);
+static void na_tray_manager_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void na_tray_manager_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void na_tray_manager_unmanage (NaTrayManager *manager);
+
+G_DEFINE_TYPE (NaTrayManager, na_tray_manager, G_TYPE_OBJECT)
+
+static void
+na_tray_manager_init (NaTrayManager *manager)
+{
+ manager->invisible = NULL;
+ manager->socket_table = g_hash_table_new (NULL, NULL);
+}
+
+static void
+na_tray_manager_class_init (NaTrayManagerClass *klass)
+{
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass *)klass;
+
+ gobject_class->finalize = na_tray_manager_finalize;
+ gobject_class->set_property = na_tray_manager_set_property;
+ gobject_class->get_property = na_tray_manager_get_property;
+
+ g_object_class_install_property (gobject_class,
+ PROP_ORIENTATION,
+ g_param_spec_enum ("orientation",
+ "orientation",
+ "orientation",
+ GTK_TYPE_ORIENTATION,
+ GTK_ORIENTATION_HORIZONTAL,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_NAME |
+ G_PARAM_STATIC_NICK |
+ G_PARAM_STATIC_BLURB));
+
+ manager_signals[TRAY_ICON_ADDED] =
+ g_signal_new ("tray_icon_added",
+ G_OBJECT_CLASS_TYPE (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (NaTrayManagerClass, tray_icon_added),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE, 1,
+ GTK_TYPE_SOCKET);
+
+ manager_signals[TRAY_ICON_REMOVED] =
+ g_signal_new ("tray_icon_removed",
+ G_OBJECT_CLASS_TYPE (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (NaTrayManagerClass, tray_icon_removed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE, 1,
+ GTK_TYPE_SOCKET);
+ manager_signals[MESSAGE_SENT] =
+ g_signal_new ("message_sent",
+ G_OBJECT_CLASS_TYPE (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (NaTrayManagerClass, message_sent),
+ NULL, NULL,
+ _na_marshal_VOID__OBJECT_STRING_LONG_LONG,
+ G_TYPE_NONE, 4,
+ GTK_TYPE_SOCKET,
+ G_TYPE_STRING,
+ G_TYPE_LONG,
+ G_TYPE_LONG);
+ manager_signals[MESSAGE_CANCELLED] =
+ g_signal_new ("message_cancelled",
+ G_OBJECT_CLASS_TYPE (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (NaTrayManagerClass, message_cancelled),
+ NULL, NULL,
+ _na_marshal_VOID__OBJECT_LONG,
+ G_TYPE_NONE, 2,
+ GTK_TYPE_SOCKET,
+ G_TYPE_LONG);
+ manager_signals[LOST_SELECTION] =
+ g_signal_new ("lost_selection",
+ G_OBJECT_CLASS_TYPE (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (NaTrayManagerClass, lost_selection),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+#if defined (GDK_WINDOWING_X11)
+ /* Nothing */
+#elif defined (GDK_WINDOWING_WIN32)
+ g_warning ("Port NaTrayManager to Win32");
+#else
+ g_warning ("Port NaTrayManager to this GTK+ backend");
+#endif
+}
+
+static void
+na_tray_manager_finalize (GObject *object)
+{
+ NaTrayManager *manager;
+
+ manager = NA_TRAY_MANAGER (object);
+
+ na_tray_manager_unmanage (manager);
+
+ g_list_free (manager->messages);
+ g_hash_table_destroy (manager->socket_table);
+
+ G_OBJECT_CLASS (na_tray_manager_parent_class)->finalize (object);
+}
+
+static void
+na_tray_manager_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ NaTrayManager *manager = NA_TRAY_MANAGER (object);
+
+ switch (prop_id)
+ {
+ case PROP_ORIENTATION:
+ na_tray_manager_set_orientation (manager, g_value_get_enum (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+na_tray_manager_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ NaTrayManager *manager = NA_TRAY_MANAGER (object);
+
+ switch (prop_id)
+ {
+ case PROP_ORIENTATION:
+ g_value_set_enum (value, manager->orientation);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+NaTrayManager *
+na_tray_manager_new (void)
+{
+ NaTrayManager *manager;
+
+ manager = g_object_new (NA_TYPE_TRAY_MANAGER, NULL);
+
+ return manager;
+}
+
+#ifdef GDK_WINDOWING_X11
+
+static gboolean
+na_tray_manager_plug_removed (GtkSocket *socket,
+ NaTrayManager *manager)
+{
+ NaTrayChild *child = NA_TRAY_CHILD (socket);
+
+ g_hash_table_remove (manager->socket_table,
+ GINT_TO_POINTER (child->icon_window));
+ g_signal_emit (manager, manager_signals[TRAY_ICON_REMOVED], 0, child);
+
+ /* This destroys the socket. */
+ return FALSE;
+}
+
+static void
+na_tray_manager_handle_dock_request (NaTrayManager *manager,
+ XClientMessageEvent *xevent)
+{
+ Window icon_window = xevent->data.l[2];
+ GtkWidget *child;
+
+ if (g_hash_table_lookup (manager->socket_table,
+ GINT_TO_POINTER (icon_window)))
+ {
+ /* We already got this notification earlier, ignore this one */
+ return;
+ }
+
+ child = na_tray_child_new (manager->screen, icon_window);
+ if (child == NULL) /* already gone or other error */
+ return;
+
+ g_signal_emit (manager, manager_signals[TRAY_ICON_ADDED], 0,
+ child);
+
+ /* If the child wasn't attached, then destroy it */
+
+ if (!GTK_IS_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (child))))
+ {
+ gtk_widget_destroy (child);
+ return;
+ }
+
+ g_signal_connect (child, "plug_removed",
+ G_CALLBACK (na_tray_manager_plug_removed), manager);
+
+ gtk_socket_add_id (GTK_SOCKET (child), icon_window);
+
+ if (!gtk_socket_get_plug_window (GTK_SOCKET (child)))
+ {
+ /* Embedding failed, we won't get a plug-removed signal */
+ g_signal_emit (manager, manager_signals[TRAY_ICON_REMOVED], 0, child);
+ gtk_widget_destroy (child);
+ return;
+ }
+
+ g_hash_table_insert (manager->socket_table,
+ GINT_TO_POINTER (icon_window), child);
+ gtk_widget_show (child);
+}
+
+static void
+pending_message_free (PendingMessage *message)
+{
+ g_free (message->str);
+ g_free (message);
+}
+
+static GdkFilterReturn
+na_tray_manager_handle_client_message_message_data (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XClientMessageEvent *xevent;
+ NaTrayManager *manager;
+ GList *p;
+ int len;
+
+ xevent = (XClientMessageEvent *) xev;
+ manager = data;
+
+ /* Try to see if we can find the pending message in the list */
+ for (p = manager->messages; p; p = p->next)
+ {
+ PendingMessage *msg = p->data;
+
+ if (xevent->window == msg->window)
+ {
+ /* Append the message */
+ len = MIN (msg->remaining_len, 20);
+
+ memcpy ((msg->str + msg->len - msg->remaining_len),
+ &xevent->data, len);
+ msg->remaining_len -= len;
+
+ if (msg->remaining_len == 0)
+ {
+ GtkSocket *socket;
+
+ socket = g_hash_table_lookup (manager->socket_table,
+ GINT_TO_POINTER (msg->window));
+
+ if (socket)
+ g_signal_emit (manager, manager_signals[MESSAGE_SENT], 0,
+ socket, msg->str, msg->id, msg->timeout);
+
+ pending_message_free (msg);
+ manager->messages = g_list_remove_link (manager->messages, p);
+ g_list_free_1 (p);
+ }
+
+ break;
+ }
+ }
+
+ return GDK_FILTER_REMOVE;
+}
+
+static void
+na_tray_manager_handle_begin_message (NaTrayManager *manager,
+ XClientMessageEvent *xevent)
+{
+ GtkSocket *socket;
+ GList *p;
+ PendingMessage *msg;
+ long timeout;
+ long len;
+ long id;
+
+ socket = g_hash_table_lookup (manager->socket_table,
+ GINT_TO_POINTER (xevent->window));
+ /* we don't know about this tray icon, so ignore the message */
+ if (!socket)
+ return;
+
+ /* Check if the same message is already in the queue and remove it if so */
+ for (p = manager->messages; p; p = p->next)
+ {
+ PendingMessage *pmsg = p->data;
+
+ if (xevent->window == pmsg->window &&
+ xevent->data.l[4] == pmsg->id)
+ {
+ /* Hmm, we found it, now remove it */
+ pending_message_free (pmsg);
+ manager->messages = g_list_remove_link (manager->messages, p);
+ g_list_free_1 (p);
+ break;
+ }
+ }
+
+ timeout = xevent->data.l[2];
+ len = xevent->data.l[3];
+ id = xevent->data.l[4];
+
+ if (len == 0)
+ {
+ g_signal_emit (manager, manager_signals[MESSAGE_SENT], 0,
+ socket, "", id, timeout);
+ }
+ else
+ {
+ /* Now add the new message to the queue */
+ msg = g_new0 (PendingMessage, 1);
+ msg->window = xevent->window;
+ msg->timeout = timeout;
+ msg->len = len;
+ msg->id = id;
+ msg->remaining_len = msg->len;
+ msg->str = g_malloc (msg->len + 1);
+ msg->str[msg->len] = '\0';
+ manager->messages = g_list_prepend (manager->messages, msg);
+ }
+}
+
+static void
+na_tray_manager_handle_cancel_message (NaTrayManager *manager,
+ XClientMessageEvent *xevent)
+{
+ GList *p;
+ GtkSocket *socket;
+
+ /* Check if the message is in the queue and remove it if so */
+ for (p = manager->messages; p; p = p->next)
+ {
+ PendingMessage *msg = p->data;
+
+ if (xevent->window == msg->window &&
+ xevent->data.l[4] == msg->id)
+ {
+ pending_message_free (msg);
+ manager->messages = g_list_remove_link (manager->messages, p);
+ g_list_free_1 (p);
+ break;
+ }
+ }
+
+ socket = g_hash_table_lookup (manager->socket_table,
+ GINT_TO_POINTER (xevent->window));
+
+ if (socket)
+ {
+ g_signal_emit (manager, manager_signals[MESSAGE_CANCELLED], 0,
+ socket, xevent->data.l[2]);
+ }
+}
+
+static GdkFilterReturn
+na_tray_manager_handle_client_message_opcode (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XClientMessageEvent *xevent;
+ NaTrayManager *manager;
+
+ xevent = (XClientMessageEvent *) xev;
+ manager = data;
+
+ switch (xevent->data.l[1])
+ {
+ case SYSTEM_TRAY_REQUEST_DOCK:
+ /* Ignore this one since we don't know on which window this was received
+ * and so we can't know for which screen this is. It will be handled
+ * in na_tray_manager_window_filter() since we also receive it there */
+ break;
+
+ case SYSTEM_TRAY_BEGIN_MESSAGE:
+ na_tray_manager_handle_begin_message (manager, xevent);
+ return GDK_FILTER_REMOVE;
+
+ case SYSTEM_TRAY_CANCEL_MESSAGE:
+ na_tray_manager_handle_cancel_message (manager, xevent);
+ return GDK_FILTER_REMOVE;
+ default:
+ break;
+ }
+
+ return GDK_FILTER_CONTINUE;
+}
+
+static GdkFilterReturn
+na_tray_manager_window_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent = (GdkXEvent *)xev;
+ NaTrayManager *manager = data;
+
+ if (xevent->type == ClientMessage)
+ {
+ /* We handle this client message here. See comment in
+ * na_tray_manager_handle_client_message_opcode() for details */
+ if (xevent->xclient.message_type == manager->opcode_atom &&
+ xevent->xclient.data.l[1] == SYSTEM_TRAY_REQUEST_DOCK)
+ {
+ na_tray_manager_handle_dock_request (manager,
+ (XClientMessageEvent *) xevent);
+ return GDK_FILTER_REMOVE;
+ }
+ }
+ else if (xevent->type == SelectionClear)
+ {
+ g_signal_emit (manager, manager_signals[LOST_SELECTION], 0);
+ na_tray_manager_unmanage (manager);
+ }
+
+ return GDK_FILTER_CONTINUE;
+}
+
+#if 0
+//FIXME investigate why this doesn't work
+static gboolean
+na_tray_manager_selection_clear_event (GtkWidget *widget,
+ GdkEventSelection *event,
+ NaTrayManager *manager)
+{
+ g_signal_emit (manager, manager_signals[LOST_SELECTION], 0);
+ na_tray_manager_unmanage (manager);
+
+ return FALSE;
+}
+#endif
+#endif
+
+static void
+na_tray_manager_unmanage (NaTrayManager *manager)
+{
+#ifdef GDK_WINDOWING_X11
+ GdkDisplay *display;
+ guint32 timestamp;
+ GtkWidget *invisible;
+ GdkWindow *window;
+
+ if (manager->invisible == NULL)
+ return;
+
+ invisible = manager->invisible;
+ window = gtk_widget_get_window (invisible);
+
+ g_assert (GTK_IS_INVISIBLE (invisible));
+ g_assert (gtk_widget_get_realized (invisible));
+ g_assert (GDK_IS_WINDOW (window));
+
+ display = gtk_widget_get_display (invisible);
+
+ if (gdk_selection_owner_get_for_display (display, manager->selection_atom) ==
+ window)
+ {
+ timestamp = gdk_x11_get_server_time (window);
+ gdk_selection_owner_set_for_display (display,
+ NULL,
+ manager->selection_atom,
+ timestamp,
+ TRUE);
+ }
+
+ //FIXME: we should also use gdk_remove_client_message_filter when it's
+ //available
+ // See bug #351254
+ gdk_window_remove_filter (window,
+ na_tray_manager_window_filter, manager);
+
+ manager->invisible = NULL; /* prior to destroy for reentrancy paranoia */
+ gtk_widget_destroy (invisible);
+ g_object_unref (G_OBJECT (invisible));
+#endif
+}
+
+static void
+na_tray_manager_set_orientation_property (NaTrayManager *manager)
+{
+#ifdef GDK_WINDOWING_X11
+ GdkWindow *window;
+ GdkDisplay *display;
+ Atom orientation_atom;
+ gulong data[1];
+
+ if (!manager->invisible)
+ return;
+ window = gtk_widget_get_window (manager->invisible);
+ if (!window)
+ return;
+
+ display = gtk_widget_get_display (manager->invisible);
+ orientation_atom = gdk_x11_get_xatom_by_name_for_display (display,
+ "_NET_SYSTEM_TRAY_ORIENTATION");
+
+ data[0] = manager->orientation == GTK_ORIENTATION_HORIZONTAL ?
+ SYSTEM_TRAY_ORIENTATION_HORZ :
+ SYSTEM_TRAY_ORIENTATION_VERT;
+
+ XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
+ GDK_WINDOW_XWINDOW (window),
+ orientation_atom,
+ XA_CARDINAL, 32,
+ PropModeReplace,
+ (guchar *) &data, 1);
+#endif
+}
+
+static void
+na_tray_manager_set_visual_property (NaTrayManager *manager)
+{
+#ifdef GDK_WINDOWING_X11
+ GdkWindow *window;
+ GdkDisplay *display;
+ Visual *xvisual;
+ Atom visual_atom;
+ gulong data[1];
+
+ if (!manager->invisible)
+ return;
+ window = gtk_widget_get_window (manager->invisible);
+ if (!window)
+ return;
+
+ /* The visual property is a hint to the tray icons as to what visual they
+ * should use for their windows. If the X server has RGBA colormaps, then
+ * we tell the tray icons to use a RGBA colormap and we'll composite the
+ * icon onto its parents with real transparency. Otherwise, we just tell
+ * the icon to use our colormap, and we'll do some hacks with parent
+ * relative backgrounds to simulate transparency.
+ */
+
+ display = gtk_widget_get_display (manager->invisible);
+ visual_atom = gdk_x11_get_xatom_by_name_for_display (display,
+ "_NET_SYSTEM_TRAY_VISUAL");
+
+ if (gdk_screen_get_rgba_visual (manager->screen) != NULL &&
+ gdk_display_supports_composite (display))
+ {
+ xvisual = GDK_VISUAL_XVISUAL (gdk_screen_get_rgba_visual (manager->screen));
+ }
+ else
+ {
+ /* We actually want the visual of the tray where the icons will
+ * be embedded. In almost all cases, this will be the same as the visual
+ * of the screen.
+ */
+ GdkColormap *colormap;
+
+ colormap = gdk_screen_get_default_colormap (manager->screen);
+ xvisual = GDK_VISUAL_XVISUAL (gdk_colormap_get_visual (colormap));
+ }
+
+ data[0] = XVisualIDFromVisual (xvisual);
+
+ XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
+ GDK_WINDOW_XWINDOW (window),
+ visual_atom,
+ XA_VISUALID, 32,
+ PropModeReplace,
+ (guchar *) &data, 1);
+#endif
+}
+
+#ifdef GDK_WINDOWING_X11
+
+static gboolean
+na_tray_manager_manage_screen_x11 (NaTrayManager *manager,
+ GdkScreen *screen)
+{
+ GdkDisplay *display;
+ Screen *xscreen;
+ GtkWidget *invisible;
+ GdkWindow *window;
+ char *selection_atom_name;
+ guint32 timestamp;
+
+ g_return_val_if_fail (NA_IS_TRAY_MANAGER (manager), FALSE);
+ g_return_val_if_fail (manager->screen == NULL, FALSE);
+
+ /* If there's already a manager running on the screen
+ * we can't create another one.
+ */
+#if 0
+ if (na_tray_manager_check_running_screen_x11 (screen))
+ return FALSE;
+#endif
+
+ manager->screen = screen;
+
+ display = gdk_screen_get_display (screen);
+ xscreen = GDK_SCREEN_XSCREEN (screen);
+
+ invisible = gtk_invisible_new_for_screen (screen);
+ gtk_widget_realize (invisible);
+
+ gtk_widget_add_events (invisible,
+ GDK_PROPERTY_CHANGE_MASK | GDK_STRUCTURE_MASK);
+
+ selection_atom_name = g_strdup_printf ("_NET_SYSTEM_TRAY_S%d",
+ gdk_screen_get_number (screen));
+ manager->selection_atom = gdk_atom_intern (selection_atom_name, FALSE);
+ g_free (selection_atom_name);
+
+ manager->invisible = invisible;
+ g_object_ref (G_OBJECT (manager->invisible));
+
+ na_tray_manager_set_orientation_property (manager);
+ na_tray_manager_set_visual_property (manager);
+
+ window = gtk_widget_get_window (invisible);
+
+ timestamp = gdk_x11_get_server_time (window);
+
+ /* Check if we could set the selection owner successfully */
+ if (gdk_selection_owner_set_for_display (display,
+ window,
+ manager->selection_atom,
+ timestamp,
+ TRUE))
+ {
+ XClientMessageEvent xev;
+ GdkAtom opcode_atom;
+ GdkAtom message_data_atom;
+
+ xev.type = ClientMessage;
+ xev.window = RootWindowOfScreen (xscreen);
+ xev.message_type = gdk_x11_get_xatom_by_name_for_display (display,
+ "MANAGER");
+
+ xev.format = 32;
+ xev.data.l[0] = timestamp;
+ xev.data.l[1] = gdk_x11_atom_to_xatom_for_display (display,
+ manager->selection_atom);
+ xev.data.l[2] = GDK_WINDOW_XWINDOW (window);
+ xev.data.l[3] = 0; /* manager specific data */
+ xev.data.l[4] = 0; /* manager specific data */
+
+ XSendEvent (GDK_DISPLAY_XDISPLAY (display),
+ RootWindowOfScreen (xscreen),
+ False, StructureNotifyMask, (XEvent *)&xev);
+
+ opcode_atom = gdk_atom_intern ("_NET_SYSTEM_TRAY_OPCODE", FALSE);
+ manager->opcode_atom = gdk_x11_atom_to_xatom_for_display (display,
+ opcode_atom);
+
+ message_data_atom = gdk_atom_intern ("_NET_SYSTEM_TRAY_MESSAGE_DATA",
+ FALSE);
+
+ /* Add a window filter */
+#if 0
+ /* This is for when we lose the selection of _NET_SYSTEM_TRAY_Sx */
+ g_signal_connect (invisible, "selection-clear-event",
+ G_CALLBACK (na_tray_manager_selection_clear_event),
+ manager);
+#endif
+ /* This is for SYSTEM_TRAY_REQUEST_DOCK and SelectionClear */
+ gdk_window_add_filter (window,
+ na_tray_manager_window_filter, manager);
+ /* This is for SYSTEM_TRAY_BEGIN_MESSAGE and SYSTEM_TRAY_CANCEL_MESSAGE */
+ gdk_display_add_client_message_filter (display, opcode_atom,
+ na_tray_manager_handle_client_message_opcode,
+ manager);
+ /* This is for _NET_SYSTEM_TRAY_MESSAGE_DATA */
+ gdk_display_add_client_message_filter (display, message_data_atom,
+ na_tray_manager_handle_client_message_message_data,
+ manager);
+ return TRUE;
+ }
+ else
+ {
+ gtk_widget_destroy (invisible);
+ g_object_unref (invisible);
+ manager->invisible = NULL;
+
+ manager->screen = NULL;
+
+ return FALSE;
+ }
+}
+
+#endif
+
+gboolean
+na_tray_manager_manage_screen (NaTrayManager *manager,
+ GdkScreen *screen)
+{
+ g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
+ g_return_val_if_fail (manager->screen == NULL, FALSE);
+
+#ifdef GDK_WINDOWING_X11
+ return na_tray_manager_manage_screen_x11 (manager, screen);
+#else
+ return FALSE;
+#endif
+}
+
+#ifdef GDK_WINDOWING_X11
+
+static gboolean
+na_tray_manager_check_running_screen_x11 (GdkScreen *screen)
+{
+ GdkDisplay *display;
+ Atom selection_atom;
+ char *selection_atom_name;
+
+ display = gdk_screen_get_display (screen);
+ selection_atom_name = g_strdup_printf ("_NET_SYSTEM_TRAY_S%d",
+ gdk_screen_get_number (screen));
+ selection_atom = gdk_x11_get_xatom_by_name_for_display (display,
+ selection_atom_name);
+ g_free (selection_atom_name);
+
+ if (XGetSelectionOwner (GDK_DISPLAY_XDISPLAY (display),
+ selection_atom) != None)
+ return TRUE;
+ else
+ return FALSE;
+}
+
+#endif
+
+gboolean
+na_tray_manager_check_running (GdkScreen *screen)
+{
+ g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
+
+#ifdef GDK_WINDOWING_X11
+ return na_tray_manager_check_running_screen_x11 (screen);
+#else
+ return FALSE;
+#endif
+}
+
+void
+na_tray_manager_set_orientation (NaTrayManager *manager,
+ GtkOrientation orientation)
+{
+ g_return_if_fail (NA_IS_TRAY_MANAGER (manager));
+
+ if (manager->orientation != orientation)
+ {
+ manager->orientation = orientation;
+
+ na_tray_manager_set_orientation_property (manager);
+
+ g_object_notify (G_OBJECT (manager), "orientation");
+ }
+}
+
+GtkOrientation
+na_tray_manager_get_orientation (NaTrayManager *manager)
+{
+ g_return_val_if_fail (NA_IS_TRAY_MANAGER (manager), GTK_ORIENTATION_HORIZONTAL);
+
+ return manager->orientation;
+}