+static void
+xembed_set_info (GdkWindow *window,
+ unsigned long flags)
+{
+ GdkDisplay *display = gdk_window_get_display (window);
+ unsigned long buffer[2];
+
+ Atom xembed_info_atom = gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED_INFO");
+
+ buffer[0] = GTK_XEMBED_PROTOCOL_VERSION;
+ buffer[1] = flags;
+
+ XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
+ GDK_WINDOW_XID (window),
+ xembed_info_atom, xembed_info_atom, 32,
+ PropModeReplace,
+ (unsigned char *)buffer, 2);
+}
+
+/**
+ * gtk_plug_focus_first_last:
+ * @plug: a #GtkPlug
+ * @direction: a direction
+ *
+ * Called from the GtkPlug backend when the corresponding socket has
+ * told the plug that it has received the focus.
+ */
+static void
+gtk_plug_focus_first_last (GtkPlug *plug,
+ GtkDirectionType direction)
+{
+ GtkWindow *window = GTK_WINDOW (plug);
+ GtkWidget *focus_widget;
+ GtkWidget *parent;
+
+ focus_widget = gtk_window_get_focus (window);
+ if (focus_widget)
+ {
+ parent = gtk_widget_get_parent (focus_widget);
+ while (parent)
+ {
+ gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
+ parent = gtk_widget_get_parent (parent);
+ }
+
+ gtk_window_set_focus (GTK_WINDOW (plug), NULL);
+ }
+
+ gtk_widget_child_focus (GTK_WIDGET (plug), direction);
+}
+
+static void
+handle_xembed_message (GtkPlug *plug,
+ XEmbedMessageType message,
+ glong detail,
+ glong data1,
+ glong data2,
+ guint32 time)
+{
+ GtkWindow *window = GTK_WINDOW (plug);
+
+ GTK_NOTE (PLUGSOCKET,
+ g_message ("GtkPlug: %s received", _gtk_xembed_message_name (message)));
+
+ switch (message)
+ {
+ case XEMBED_EMBEDDED_NOTIFY:
+ break;
+ case XEMBED_WINDOW_ACTIVATE:
+ _gtk_window_set_is_active (window, TRUE);
+ break;
+ case XEMBED_WINDOW_DEACTIVATE:
+ _gtk_window_set_is_active (window, FALSE);
+ break;
+
+ case XEMBED_MODALITY_ON:
+ gtk_plug_handle_modality_on (plug);
+ break;
+ case XEMBED_MODALITY_OFF:
+ gtk_plug_handle_modality_off (plug);
+ break;
+
+ case XEMBED_FOCUS_IN:
+ _gtk_window_set_has_toplevel_focus (window, TRUE);
+ switch (detail)
+ {
+ case XEMBED_FOCUS_FIRST:
+ gtk_plug_focus_first_last (plug, GTK_DIR_TAB_FORWARD);
+ break;
+ case XEMBED_FOCUS_LAST:
+ gtk_plug_focus_first_last (plug, GTK_DIR_TAB_BACKWARD);
+ break;
+ case XEMBED_FOCUS_CURRENT:
+ break;
+ }
+ break;
+
+ case XEMBED_FOCUS_OUT:
+ _gtk_window_set_has_toplevel_focus (window, FALSE);
+ break;
+
+ case XEMBED_GRAB_KEY:
+ case XEMBED_UNGRAB_KEY:
+ case XEMBED_GTK_GRAB_KEY:
+ case XEMBED_GTK_UNGRAB_KEY:
+ case XEMBED_REQUEST_FOCUS:
+ case XEMBED_FOCUS_NEXT:
+ case XEMBED_FOCUS_PREV:
+ g_warning ("GtkPlug: Invalid _XEMBED message %s received", _gtk_xembed_message_name (message));
+ break;
+
+ default:
+ GTK_NOTE(PLUGSOCKET,
+ g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %d", message));
+ break;
+ }
+}
+static GdkFilterReturn
+gtk_plug_filter_func (GdkXEvent *gdk_xevent,
+ GdkEvent *event,
+ gpointer data)
+{
+ GdkScreen *screen = gdk_window_get_screen (event->any.window);
+ GdkDisplay *display = gdk_screen_get_display (screen);
+ GtkPlug *plug = GTK_PLUG (data);
+ GtkPlugPrivate *priv = plug->priv;
+ XEvent *xevent = (XEvent *)gdk_xevent;
+ GHashTableIter iter;
+ gpointer key;
+ GdkFilterReturn return_val;
+
+ return_val = GDK_FILTER_CONTINUE;
+
+ switch (xevent->type)
+ {
+ case ClientMessage:
+ if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED"))
+ {
+ _gtk_xembed_push_message (xevent);
+ handle_xembed_message (plug,
+ xevent->xclient.data.l[1],
+ xevent->xclient.data.l[2],
+ xevent->xclient.data.l[3],
+ xevent->xclient.data.l[4],
+ xevent->xclient.data.l[0]);
+ _gtk_xembed_pop_message ();
+
+ return_val = GDK_FILTER_REMOVE;
+ }
+ else if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
+ {
+ /* We filter these out because we take being reparented back to the
+ * root window as the reliable end of the embedding protocol
+ */
+
+ return_val = GDK_FILTER_REMOVE;
+ }
+ break;
+ case ReparentNotify:
+ {
+ XReparentEvent *xre = &xevent->xreparent;
+ gboolean was_embedded = priv->socket_window != NULL;
+
+ GTK_NOTE (PLUGSOCKET, g_message("GtkPlug: ReparentNotify received"));
+
+ return_val = GDK_FILTER_REMOVE;
+
+ g_object_ref (plug);
+
+ if (was_embedded)
+ {
+ /* End of embedding protocol for previous socket */
+
+ GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: end of embedding"));
+ /* FIXME: race if we remove from another socket and
+ * then add to a local window before we get notification
+ * Probably need check in _gtk_plug_add_to_socket
+ */
+
+ if (xre->parent != GDK_WINDOW_XID (priv->socket_window))
+ {
+ GtkWidget *widget = GTK_WIDGET (plug);
+
+ gtk_widget_unregister_window (widget, priv->socket_window);
+ g_object_unref (priv->socket_window);
+ priv->socket_window = NULL;
+
+ /* Emit a delete window, as if the user attempted
+ * to close the toplevel. Simple as to how we
+ * handle WM_DELETE_WINDOW, if it isn't handled
+ * we destroy the widget. BUt only do this if
+ * we are being reparented to the root window.
+ * Moving from one embedder to another should
+ * be invisible to the app.
+ */
+
+ if (xre->parent == GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
+ {
+ GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: calling gtk_plug_send_delete_event()"));
+ gtk_plug_send_delete_event (widget);
+
+ g_object_notify (G_OBJECT (plug), "embedded");
+ }
+ }
+ else
+ goto done;
+ }
+
+ if (xre->parent != GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
+ {
+ /* Start of embedding protocol */
+
+ GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: start of embedding"));
+
+ priv->socket_window = gdk_x11_window_lookup_for_display (display, xre->parent);
+ if (priv->socket_window)
+ {
+ gpointer user_data = NULL;
+ gdk_window_get_user_data (priv->socket_window, &user_data);
+
+ if (user_data)
+ {
+ g_warning (G_STRLOC "Plug reparented unexpectedly into window in the same process");
+ priv->socket_window = NULL;
+ break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
+ }
+
+ g_object_ref (priv->socket_window);
+ }
+ else
+ {
+ priv->socket_window = gdk_x11_window_foreign_new_for_display (display, xre->parent);
+ if (!priv->socket_window) /* Already gone */
+ break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
+ }
+
+ if (priv->grabbed_keys)
+ {
+ g_hash_table_iter_init (&iter, priv->grabbed_keys);
+ while (g_hash_table_iter_next (&iter, &key, NULL))
+ {
+ GrabbedKey *grabbed_key = key;
+
+ _gtk_xembed_send_message (priv->socket_window, XEMBED_GTK_GRAB_KEY, 0,
+ grabbed_key->accelerator_key,
+ grabbed_key->accelerator_mods);
+ }
+ }
+
+ if (!was_embedded)
+ g_signal_emit_by_name (plug, "embedded");
+
+ g_object_notify (G_OBJECT (plug), "embedded");
+ }
+
+ done:
+ g_object_unref (plug);
+
+ break;
+ }
+ case KeyPress:
+ case KeyRelease:
+ {
+ GdkModifierType state, consumed;
+ GdkDeviceManager *device_manager;
+ GdkDevice *pointer, *keyboard;
+ GdkKeymap *keymap;
+
+ if (xevent->type == KeyPress)
+ event->key.type = GDK_KEY_PRESS;
+ else
+ event->key.type = GDK_KEY_RELEASE;
+
+ event->key.window = gdk_x11_window_lookup_for_display (display, xevent->xany.window);
+ event->key.send_event = TRUE;
+ event->key.time = xevent->xkey.time;
+ event->key.state = (GdkModifierType) xevent->xkey.state;
+ event->key.hardware_keycode = xevent->xkey.keycode;
+ event->key.keyval = GDK_KEY_VoidSymbol;
+
+ device_manager = gdk_display_get_device_manager (display);
+ pointer = gdk_device_manager_get_client_pointer (device_manager);
+ keyboard = gdk_device_get_associated_device (pointer);
+ gdk_event_set_device (event, keyboard);
+
+ keymap = gdk_keymap_get_for_display (display);
+
+ event->key.group = gdk_x11_keymap_get_group_for_state (keymap, xevent->xkey.state);
+ event->key.is_modifier = gdk_x11_keymap_key_is_modifier (keymap, event->key.hardware_keycode);
+
+ gdk_keymap_translate_keyboard_state (keymap,
+ event->key.hardware_keycode,
+ event->key.state,
+ event->key.group,
+ &event->key.keyval,
+ NULL, NULL, &consumed);
+
+ state = event->key.state & ~consumed;
+ gdk_keymap_add_virtual_modifiers (keymap, &state);
+ event->key.state |= state;
+
+ event->key.length = 0;
+ event->key.string = g_strdup ("");
+
+ return_val = GDK_FILTER_TRANSLATE;
+ }
+ }
+
+ return return_val;
+}