C++ GDK_DISPLAY_XDISPLAY函数代码示例

static GdkEvent *
gdk_event_source_translate_event (GdkEventSource *event_source,
                                  XEvent         *xevent)
{
  GdkEvent *event = gdk_event_new (GDK_NOTHING);
  GdkFilterReturn result = GDK_FILTER_CONTINUE;
  GdkEventTranslator *event_translator;
  GdkWindow *filter_window;
  Display *dpy;

  dpy = GDK_DISPLAY_XDISPLAY (event_source->display);

#ifdef HAVE_XGENERICEVENTS
  /* Get cookie data here so it's available
   * to every event translator and event filter.
   */
  if (xevent->type == GenericEvent)
    XGetEventData (dpy, &xevent->xcookie);
#endif

  filter_window = gdk_event_source_get_filter_window (event_source, xevent,
                                                      &event_translator);
  if (filter_window)
    event->any.window = g_object_ref (filter_window);

  /* Run default filters */
  if (_gdk_default_filters)
    {
      /* Apply global filters */
      result = gdk_event_apply_filters (xevent, event, NULL);
    }

  if (result == GDK_FILTER_CONTINUE &&
      filter_window && filter_window->filters)
    {
      /* Apply per-window filters */
      result = gdk_event_apply_filters (xevent, event, filter_window);
    }

  if (result != GDK_FILTER_CONTINUE)
    {
#ifdef HAVE_XGENERICEVENTS
      if (xevent->type == GenericEvent)
        XFreeEventData (dpy, &xevent->xcookie);
#endif

      if (result == GDK_FILTER_REMOVE)
        {
          gdk_event_free (event);
          return NULL;
        }
      else /* GDK_FILTER_TRANSLATE */
        return event;
    }

  gdk_event_free (event);
  event = NULL;

  if (event_translator)
    {
      /* Event translator was gotten before in get_filter_window() */
      event = _gdk_x11_event_translator_translate (event_translator,
                                                   event_source->display,
                                                   xevent);
    }
  else
    {
      GList *list = event_source->translators;

      while (list && !event)
        {
          GdkEventTranslator *translator = list->data;

          list = list->next;
          event = _gdk_x11_event_translator_translate (translator,
                                                       event_source->display,
                                                       xevent);
        }
    }

  if (event &&
      (event->type == GDK_ENTER_NOTIFY ||
       event->type == GDK_LEAVE_NOTIFY) &&
      event->crossing.window != NULL)
    {
      /* Handle focusing (in the case where no window manager is running */
      handle_focus_change (&event->crossing);
    }

#ifdef HAVE_XGENERICEVENTS
  if (xevent->type == GenericEvent)
    XFreeEventData (dpy, &xevent->xcookie);
#endif

  return event;
}

gboolean
update_window_decoration_size (WnckWindow *win)
{
    decor_t           *d;
    cairo_surface_t   *surface, *buffer_surface = NULL;
    Picture           picture;
    Display           *xdisplay;
    XRenderPictFormat *format;

    if (win == NULL)
	return FALSE;

    d = g_object_get_data (G_OBJECT (win), "decor");

    if (!d->decorated)
	return FALSE;

    xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());

    gdk_error_trap_push ();

    /* Get the correct depth for the frame window in reparenting mode, otherwise
     * enforce 32 */
    if (d->frame_window)
	surface = create_native_surface_and_wrap (d->width, d->height, d->frame->style_window_rgb);
    else
	surface = create_native_surface_and_wrap (d->width, d->height, d->frame->style_window_rgba);

    gdk_flush ();

    /* Handle failure */
    if (!surface || gdk_error_trap_pop ())
    {
	if (surface)
	    cairo_surface_destroy (surface);
	return FALSE;
    }

    gdk_error_trap_push ();

    if (d->frame_window)
	buffer_surface = create_surface (d->width, d->height, d->frame->style_window_rgb);
    else
	buffer_surface = create_surface (d->width, d->height, d->frame->style_window_rgba);

    gdk_flush ();

    /* Handle failure */
    if (!buffer_surface || gdk_error_trap_pop ())
    {
	if (buffer_surface)
	    cairo_surface_destroy (buffer_surface);
	cairo_surface_destroy (surface);
	return FALSE;
    }

    /* Create XRender context */
    format = get_format_for_surface (d, buffer_surface);
    picture = XRenderCreatePicture (xdisplay, cairo_xlib_surface_get_drawable (buffer_surface),
				    format, 0, NULL);

    /* Destroy the old pixmaps and pictures */
    if (d->surface)
	cairo_surface_destroy (d->surface);

    if (d->x11Pixmap)
	decor_post_delete_pixmap (xdisplay,
				  wnck_window_get_xid (d->win),
				  d->x11Pixmap);

    if (d->buffer_surface)
	cairo_surface_destroy (d->buffer_surface);

    if (d->picture)
	XRenderFreePicture (xdisplay, d->picture);

    if (d->cr)
	cairo_destroy (d->cr);

    /* Assign new pixmaps and pictures */
    d->surface        = surface;
    d->x11Pixmap      = cairo_xlib_surface_get_drawable (d->surface);
    d->buffer_surface = buffer_surface;
    d->cr             = cairo_create (surface);

    d->picture = picture;

    d->prop_xid = wnck_window_get_xid (win);

    update_window_decoration_name (win);

    /* Redraw decoration on idle */
    queue_decor_draw (d);

    return TRUE;
}

int
main (int argc, char **argv)
{
	int i;
	char **argv_copy;
	int argc_copy;
	const char *startup_id, *display_name, *home_dir;
	GdkDisplay *display;
	TerminalOptions *options;
	GError *error = NULL;
	char *working_directory;
	int ret = EXIT_SUCCESS;

	setlocale (LC_ALL, "");

	bindtextdomain (GETTEXT_PACKAGE, TERM_LOCALEDIR);
	bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
	textdomain (GETTEXT_PACKAGE);

	_terminal_debug_init ();

	/* Make a NULL-terminated copy since we may need it later */
	argv_copy = g_new (char *, argc + 1);
	for (i = 0; i < argc; ++i)
		argv_copy [i] = argv [i];
	argv_copy [i] = NULL;
	argc_copy = argc;

	startup_id = g_getenv ("DESKTOP_STARTUP_ID");

	working_directory = g_get_current_dir ();

	/* Now change directory to $HOME so we don't prevent unmounting, e.g. if the
	 * factory is started by caja-open-terminal. See bug #565328.
	 * On failure back to /.
	 */
	home_dir = g_get_home_dir ();
	if (home_dir == NULL || chdir (home_dir) < 0)
		(void) chdir ("/");

	options = terminal_options_parse (working_directory,
	                                  NULL,
	                                  startup_id,
	                                  NULL,
	                                  FALSE,
	                                  FALSE,
	                                  &argc, &argv,
	                                  &error,
	                                  gtk_get_option_group (TRUE),
	                                  egg_sm_client_get_option_group (),
	                                  NULL);

	g_free (working_directory);

	if (options == NULL)
	{
		g_printerr (_("Failed to parse arguments: %s\n"), error->message);
		g_error_free (error);
		exit (EXIT_FAILURE);
	}

	g_set_application_name (_("Terminal"));

	/* Unset the these env variables, so they doesn't end up
	 * in the factory's env and thus in the terminals' envs.
	 */
	g_unsetenv ("DESKTOP_STARTUP_ID");
	g_unsetenv ("GIO_LAUNCHED_DESKTOP_FILE_PID");
	g_unsetenv ("GIO_LAUNCHED_DESKTOP_FILE");

	display = gdk_display_get_default ();
	display_name = gdk_display_get_name (display);
	options->display_name = g_strdup (display_name);

	if (options->startup_id == NULL)
	{
		/* Create a fake one containing a timestamp that we can use */
		Time timestamp;

		timestamp = slowly_and_stupidly_obtain_timestamp (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()));

		options->startup_id = g_strdup_printf ("_TIME%lu", timestamp);
	}

	if (options->use_factory)
	{
		OwnData *data;
		guint owner_id;

		data = g_new (OwnData, 1);
		data->factory_name = get_factory_name_for_display (display_name);
		data->options = options;
		data->exit_code = -1;
		data->argv = argv_copy;
		data->argc = argc_copy;

		gtk_init(&argc, &argv);
		options->initial_workspace = get_initial_workspace ();

		owner_id = g_bus_own_name (G_BUS_TYPE_SESSION,
//.........这里部分代码省略.........

static void
_xim_init_IMdkit ()
{
#if 0
    XIMStyle ims_styles_overspot [] = {
        XIMPreeditPosition  | XIMStatusNothing,
        XIMPreeditNothing   | XIMStatusNothing,
        XIMPreeditPosition  | XIMStatusCallbacks,
        XIMPreeditNothing   | XIMStatusCallbacks,
        0
    };
#endif

    XIMStyle ims_styles_onspot [] = {
        XIMPreeditPosition  | XIMStatusNothing,
        XIMPreeditCallbacks | XIMStatusNothing,
        XIMPreeditNothing   | XIMStatusNothing,
        XIMPreeditPosition  | XIMStatusCallbacks,
        XIMPreeditCallbacks | XIMStatusCallbacks,
        XIMPreeditNothing   | XIMStatusCallbacks,
        0
    };

    XIMEncoding ims_encodings[] = {
        "COMPOUND_TEXT",
        0
    };

    GdkWindowAttr window_attr = {
        .title              = "ibus-xim",
        .event_mask         = GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK,
        .wclass             = GDK_INPUT_OUTPUT,
        .window_type        = GDK_WINDOW_TOPLEVEL,
        .override_redirect   = 1,
    };

    XIMStyles styles;
    XIMEncodings encodings;

    GdkWindow *win;

    win = gdk_window_new (NULL, &window_attr, GDK_WA_TITLE);

    styles.count_styles =
        sizeof (ims_styles_onspot)/sizeof (XIMStyle) - 1;
    styles.supported_styles = ims_styles_onspot;

    encodings.count_encodings =
        sizeof (ims_encodings)/sizeof (XIMEncoding) - 1;
    encodings.supported_encodings = ims_encodings;

    _xims = IMOpenIM(GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
        IMModifiers, "Xi18n",
        IMServerWindow, GDK_WINDOW_XWINDOW(win),
        IMServerName, _server_name != NULL ? _server_name : "ibus",
        IMLocale, _locale != NULL ? _locale : LOCALES_STRING,
        IMServerTransport, "X/",
        IMInputStyles, &styles,
        IMEncodingList, &encodings,
        IMProtocolHandler, ims_protocol_handler,
        IMFilterEventMask, KeyPressMask | KeyReleaseMask,
        NULL);

    _init_ibus ();

    if (!ibus_bus_is_connected (_bus)) {
        g_warning ("Can not connect to ibus daemon");
        exit (EXIT_FAILURE);
    }
}

static void
_atexit_cb ()
{
    if (_bus && ibus_bus_is_connected (_bus)) {
        ibus_bus_exit(_bus, False);
    }
}

static void
_sighandler (int sig)
{
    exit(EXIT_FAILURE);
}

static gboolean remmina_rdp_event_on_key(GtkWidget* widget, GdkEventKey* event, RemminaProtocolWidget* gp)
{
	GdkDisplay* display;
	guint16 cooked_keycode;
	rfContext* rfi;
	RemminaPluginRdpEvent rdp_event;

	rfi = GET_DATA(gp);
	rdp_event.type = REMMINA_RDP_EVENT_TYPE_SCANCODE;
	rdp_event.key_event.up = (event->type == GDK_KEY_PRESS ? False : True);
	rdp_event.key_event.extended = False;

	switch (event->keyval)
	{
		case GDK_KEY_Pause:
			rdp_event.key_event.key_code = 0x1D;
			rdp_event.key_event.up = False;
			remmina_rdp_event_event_push(gp, &rdp_event);
			rdp_event.key_event.key_code = 0x45;
			rdp_event.key_event.up = False;
			remmina_rdp_event_event_push(gp, &rdp_event);
			rdp_event.key_event.key_code = 0x1D;
			rdp_event.key_event.up = True;
			remmina_rdp_event_event_push(gp, &rdp_event);
			rdp_event.key_event.key_code = 0x45;
			rdp_event.key_event.up = True;
			remmina_rdp_event_event_push(gp, &rdp_event);
			break;

		default:
			if (!rfi->use_client_keymap)
			{
				rdp_event.key_event.key_code = freerdp_keyboard_get_rdp_scancode_from_x11_keycode(event->hardware_keycode);
				remmina_plugin_service->log_printf("[RDP]keyval=%04X keycode=%i scancode=%i extended=%i\n",
						event->keyval, event->hardware_keycode, rdp_event.key_event.key_code, &rdp_event.key_event.extended);
			}
			else
			{
				//TODO: Port to GDK functions
				display = gdk_display_get_default();
				cooked_keycode = XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(display), XKeycodeToKeysym(GDK_DISPLAY_XDISPLAY(display), event->hardware_keycode, 0));
				rdp_event.key_event.key_code = freerdp_keyboard_get_rdp_scancode_from_x11_keycode(cooked_keycode);
				remmina_plugin_service->log_printf("[RDP]keyval=%04X raw_keycode=%i cooked_keycode=%i scancode=%i extended=%i\n",
						event->keyval, event->hardware_keycode, cooked_keycode, rdp_event.key_event.key_code, &rdp_event.key_event.extended);
			}

			if (rdp_event.key_event.key_code)
				remmina_rdp_event_event_push(gp, &rdp_event);

			break;
	}

	/* Register/unregister the pressed key */
	if (rdp_event.key_event.key_code)
	{
		if (event->type == GDK_KEY_PRESS)
			g_array_append_val(rfi->pressed_keys, rdp_event.key_event.key_code);
		else
			remmina_rdp_event_release_key(gp, rdp_event.key_event.key_code);
	}

	return TRUE;
}

gboolean
gdk_property_get (GdkWindow   *window,
		  GdkAtom      property,
		  GdkAtom      type,
		  gulong       offset,
		  gulong       length,
		  gint         pdelete,
		  GdkAtom     *actual_property_type,
		  gint        *actual_format_type,
		  gint        *actual_length,
		  guchar     **data)
{
  GdkDisplay *display;
  Atom ret_prop_type;
  gint ret_format;
  gulong ret_nitems;
  gulong ret_bytes_after;
  gulong get_length;
  gulong ret_length;
  guchar *ret_data;
  Atom xproperty;
  Atom xtype;
  int res;

  g_return_val_if_fail (!window || GDK_WINDOW_IS_X11 (window), FALSE);

  if (!window)
    {
      GdkScreen *screen = gdk_screen_get_default ();
      window = gdk_screen_get_root_window (screen);
      
      GDK_NOTE (MULTIHEAD, g_message ("gdk_property_get(): window is NULL\n"));
    }
  else if (!GDK_WINDOW_IS_X11 (window))
    return FALSE;

  if (GDK_WINDOW_DESTROYED (window))
    return FALSE;

  display = gdk_drawable_get_display (window);
  xproperty = gdk_x11_atom_to_xatom_for_display (display, property);
  if (type == GDK_NONE)
    xtype = AnyPropertyType;
  else
    xtype = gdk_x11_atom_to_xatom_for_display (display, type);

  ret_data = NULL;
  
  /* 
   * Round up length to next 4 byte value.  Some code is in the (bad?)
   * habit of passing G_MAXLONG as the length argument, causing an
   * overflow to negative on the add.  In this case, we clamp the
   * value to G_MAXLONG.
   */
  get_length = length + 3;
  if (get_length > G_MAXLONG)
    get_length = G_MAXLONG;

  /* To fail, either the user passed 0 or G_MAXULONG */
  get_length = get_length / 4;
  if (get_length == 0)
    {
      g_warning ("gdk_propery-get(): invalid length 0");
      return FALSE;
    }

  res = XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display),
			    GDK_WINDOW_XWINDOW (window), xproperty,
			    offset, get_length, pdelete,
			    xtype, &ret_prop_type, &ret_format,
			    &ret_nitems, &ret_bytes_after,
			    &ret_data);

  if (res != Success || (ret_prop_type == None && ret_format == 0))
    {
      return FALSE;
    }

  if (actual_property_type)
    *actual_property_type = gdk_x11_xatom_to_atom_for_display (display, ret_prop_type);
  if (actual_format_type)
    *actual_format_type = ret_format;

  if ((xtype != AnyPropertyType) && (ret_prop_type != xtype))
    {
      XFree (ret_data);
      g_warning ("Couldn't match property type %s to %s\n", 
		 gdk_x11_get_xatom_name_for_display (display, ret_prop_type), 
		 gdk_x11_get_xatom_name_for_display (display, xtype));
      return FALSE;
    }

  /* FIXME: ignoring bytes_after could have very bad effects */

  if (data)
    {
      if (ret_prop_type == XA_ATOM ||
	  ret_prop_type == gdk_x11_get_xatom_by_name_for_display (display, "ATOM_PAIR"))
	{
	  /*
//.........这里部分代码省略.........

void *wxGetDisplay()
{
    return GDK_DISPLAY_XDISPLAY(gdk_window_get_display(wxGetTopLevelGDK()));
}

int main (int argc, char **argv)
{
	gboolean supports_xinput;
	gboolean has_touchpad, has_touchscreen, has_trackball;
        XDeviceInfo *device_info;
        gint n_devices, opcode;
        guint i;

	gtk_init (&argc, &argv);

	supports_xinput = supports_xinput_devices ();
	if (supports_xinput) {
		g_print ("Supports XInput:\t\t\tyes\n");
	} else {
		g_print ("Supports XInput:\t\t\tno\n");
		return 0;
	}
	supports_xinput = supports_xinput2_devices (&opcode);
	if (supports_xinput) {
		g_print ("Supports XInput2:\t\t\tyes (opcode: %d)\n", opcode);
	} else {
		g_print ("Supports XInput2:\t\t\tno\n");
		return 0;
	}

	has_touchpad = touchpad_is_present ();
	g_print ("Has touchpad:\t\t\t\t%s\n", has_touchpad ? "yes" : "no");

	has_touchscreen = touchscreen_is_present ();
	g_print ("Has touchscreen:\t\t\t%s\n", has_touchscreen ? "yes" : "no");

	has_trackball = trackball_is_present ();
	g_print ("Has trackball:\t\t\t\t%s\n", has_trackball ? "yes" : "no");

        device_info = XListInputDevices (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &n_devices);
        if (device_info == NULL) {
		g_warning ("Has no input devices");
                return 1;
	}

	print_disabled_devices ();

        for (i = 0; i < n_devices; i++) {
                XDevice *device;

		if (device_info_is_touchscreen (&device_info[i])) {
			g_print ("Device %d is touchscreen:\t\t%s\n", (int) device_info[i].id, "yes");
			continue;
		}
		if (device_info_is_trackball (&device_info[i])) {
			g_print ("Device %d is trackball:\t\t\t%s\n", (int) device_info[i].id, "yes");
			continue;
		}
		if (device_info_is_tablet (&device_info[i])) {
			g_print ("Device %d is tablet:\t\t\t%s\n", (int) device_info[i].id, "yes");
			continue;
		}

                gdk_error_trap_push ();
                device = XOpenDevice (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), device_info[i].id);
                if (gdk_error_trap_pop () || (device == NULL))
                        continue;

                if (device_is_touchpad (device))
			g_print ("Device %d is touchpad:\t\t%s\n", (int) device_info[i].id, "yes");
		else {
			int tool_id;

			tool_id = xdevice_get_last_tool_id (device_info[i].id);
			if (tool_id >= 0x0)
				g_print ("Device %d is touchpad/touchscreen:\t%s (tool ID: 0x%x)\n", (int) device_info[i].id, "no", tool_id);
			else
				g_print ("Device %d is touchpad/touchscreen:\t%s\n", (int) device_info[i].id, "no");
		}

                XCloseDevice (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), device);
        }
        XFreeDeviceList (device_info);

	return 0;
}

guint
egg_tray_icon_send_message (EggTrayIcon *icon,
                            gint         timeout,
                            const gchar *message,
                            gint         len)
{
    guint stamp;

    g_return_val_if_fail (EGG_IS_TRAY_ICON (icon), 0);
    g_return_val_if_fail (timeout >= 0, 0);
    g_return_val_if_fail (message != NULL, 0);

    if (icon->manager_window == None)
        return 0;

    if (len < 0)
        len = strlen (message);

    stamp = icon->stamp++;

    /* Get ready to send the message */
    egg_tray_icon_send_manager_message (icon, SYSTEM_TRAY_BEGIN_MESSAGE,
                                        (Window)gtk_plug_xembed_get_id (GTK_PLUG_XEMBED (icon)),
                                        timeout, len, stamp);

    /* Now to send the actual message */
    gdk_error_trap_push ();
    while (len > 0)
    {
        XClientMessageEvent ev;
        Display *xdisplay;

#if HAVE_GTK_MULTIHEAD
        xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
#else
        xdisplay = gdk_display;
#endif

        ev.type = ClientMessage;
        ev.window = (Window)gtk_plug_xembed_get_id (GTK_PLUG_XEMBED (icon));
        ev.format = 8;
        ev.message_type = XInternAtom (xdisplay,
                                       "_NET_SYSTEM_TRAY_MESSAGE_DATA", False);
        if (len > 20)
        {
            memcpy (&ev.data, message, 20);
            len -= 20;
            message += 20;
        }
        else
        {
            memcpy (&ev.data, message, len);
            len = 0;
        }

        XSendEvent (xdisplay,
                    icon->manager_window, False, StructureNotifyMask, (XEvent *)&ev);
        XSync (xdisplay, False);
    }
    gdk_error_trap_pop ();

    return stamp;
}

nsresult
nsScreenManagerGtk :: Init()
{
#ifdef MOZ_X11
  XineramaScreenInfo *screenInfo = nullptr;
  int numScreens;

  bool useXinerama = GDK_IS_X11_DISPLAY(gdk_display_get_default());

  if (useXinerama && !mXineramalib) {
    mXineramalib = PR_LoadLibrary("libXinerama.so.1");
    if (!mXineramalib) {
      mXineramalib = SCREEN_MANAGER_LIBRARY_LOAD_FAILED;
    }
  }
  if (mXineramalib && mXineramalib != SCREEN_MANAGER_LIBRARY_LOAD_FAILED) {
    _XnrmIsActive_fn _XnrmIsActive = (_XnrmIsActive_fn)
        PR_FindFunctionSymbol(mXineramalib, "XineramaIsActive");

    _XnrmQueryScreens_fn _XnrmQueryScreens = (_XnrmQueryScreens_fn)
        PR_FindFunctionSymbol(mXineramalib, "XineramaQueryScreens");

    // get the number of screens via xinerama
    Display *display = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
    if (_XnrmIsActive && _XnrmQueryScreens && _XnrmIsActive(display)) {
      screenInfo = _XnrmQueryScreens(display, &numScreens);
    }
  }

  // screenInfo == nullptr if either Xinerama couldn't be loaded or
  // isn't running on the current display
  if (!screenInfo || numScreens == 1) {
    numScreens = 1;
#endif
    RefPtr<nsScreenGtk> screen;

    if (mCachedScreenArray.Count() > 0) {
      screen = static_cast<nsScreenGtk*>(mCachedScreenArray[0]);
    } else {
      screen = new nsScreenGtk();
      if (!screen || !mCachedScreenArray.AppendObject(screen)) {
        return NS_ERROR_OUT_OF_MEMORY;
      }
    }

    screen->Init(mRootWindow);
#ifdef MOZ_X11
  }
  // If Xinerama is enabled and there's more than one screen, fill
  // in the info for all of the screens.  If that's not the case
  // then nsScreenGTK() defaults to the screen width + height
  else {
#ifdef DEBUG
    printf("Xinerama superpowers activated for %d screens!\n", numScreens);
#endif
    for (int i = 0; i < numScreens; ++i) {
      RefPtr<nsScreenGtk> screen;
      if (mCachedScreenArray.Count() > i) {
        screen = static_cast<nsScreenGtk*>(mCachedScreenArray[i]);
      } else {
        screen = new nsScreenGtk();
        if (!screen || !mCachedScreenArray.AppendObject(screen)) {
          return NS_ERROR_OUT_OF_MEMORY;
        }
      }

      // initialize this screen object
      screen->Init(&screenInfo[i]);
    }
  }
  // Remove any screens that are no longer present.
  while (mCachedScreenArray.Count() > numScreens) {
    mCachedScreenArray.RemoveObjectAt(mCachedScreenArray.Count() - 1);
  }

  if (screenInfo) {
    XFree(screenInfo);
  }
#endif

  return NS_OK;
}

int
_wnck_error_trap_pop (void)
{
  XSync (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), False);
  return gdk_error_trap_pop ();
}

/* Code to find the active window in order to collect stats for social
 * application browsing.
 */
static void
get_active_application_properties(HippoIdleMonitor *monitor,
                                  char            **wm_class,
                                  char            **title)
{
    Display *xdisplay = GDK_DISPLAY_XDISPLAY(monitor->display);
    int n_screens = gdk_display_get_n_screens(monitor->display);
    Atom net_active_window_x = gdk_x11_get_xatom_by_name_for_display(monitor->display,
                                                                     "_NET_ACTIVE_WINDOW");
    GdkAtom net_active_window_gdk = gdk_atom_intern("_NET_ACTIVE_WINDOW", FALSE);
    Window active_window = None;
    int i;

    Atom type;
    int format;
    unsigned long n_items;
    unsigned long bytes_after;
    guchar *data;
        
    if (wm_class)
        *wm_class = NULL;
    if (title)
        *title = NULL;

    /* Find the currently focused window by looking at the _NET_ACTIVE_WINDOW property
     * on all the screens of the display.
     */
    for (i = 0; i < n_screens; i++) {
        GdkScreen *screen = gdk_display_get_screen(monitor->display, i);
        GdkWindow *root = gdk_screen_get_root_window(screen);

        if (!gdk_x11_screen_supports_net_wm_hint (screen, net_active_window_gdk))
            continue;

        XGetWindowProperty (xdisplay, GDK_DRAWABLE_XID(root),
                            net_active_window_x,
                            0, 1, False, XA_WINDOW,
                            &type, &format, &n_items, &bytes_after, &data);
        if (type == XA_WINDOW) {
            active_window = *(Window *)data;
            XFree(data);
            break;
        }
    }

    /* Now that we have the active window, figure out the application name and WM class
     */
    gdk_error_trap_push();
        
    if (active_window && wm_class) {
        if (XGetWindowProperty (xdisplay, active_window,
                                XA_WM_CLASS,
                                0, G_MAXLONG, False, XA_STRING,
                                &type, &format, &n_items, &bytes_after, &data) == Success &&
            type == XA_STRING)
        {
            if (format == 8) {
                char **list;
                int count;
                
                count = gdk_text_property_to_utf8_list_for_display(monitor->display, GDK_TARGET_STRING,
                                                                   8, data, n_items, &list);

                if (count > 1)
                    *wm_class = g_strdup(list[1]);

                if (list)
                    g_strfreev(list);
            }
            
            XFree(data);
        }
    }

    if (active_window && title) {
        Atom utf8_string = gdk_x11_get_xatom_by_name_for_display(monitor->display, "UTF8_STRING");
        
        if (XGetWindowProperty (xdisplay, active_window,
                                gdk_x11_get_xatom_by_name_for_display(monitor->display, "_NET_WM_NAME"),
                                0, G_MAXLONG, False, utf8_string,
                                &type, &format, &n_items, &bytes_after, &data) == Success &&
            type == utf8_string)
        {
            if (format == 8 && g_utf8_validate((char *)data, -1, NULL)) {
                *title = g_strdup((char *)data);
            }
            
            XFree(data);
        }
    }

    if (active_window && title && *title == NULL) {
        if (XGetWindowProperty (xdisplay, active_window,
                                XA_WM_NAME,
                                0, G_MAXLONG, False, AnyPropertyType,
                                &type, &format, &n_items, &bytes_after, &data) == Success &&
            type != None)
//.........这里部分代码省略.........

static gboolean
poll_for_idleness (void *data)
{
    HippoIdleMonitor *monitor = data;
    int i;
    int n_screens;
    unsigned long idle_time;
    gboolean was_idle;
    
    idle_time = G_MAXINT;
    n_screens = gdk_display_get_n_screens(monitor->display);
    for (i = 0; i < n_screens; ++i) {
        int result;
        GdkScreen *screen;

        screen = gdk_display_get_screen(monitor->display, i);        
        result = XScreenSaverQueryInfo(GDK_DISPLAY_XDISPLAY(monitor->display),
                                GDK_SCREEN_XSCREEN(screen)->root,
                                monitor->info);
        if (result == 0) {
            g_warning("Failed to get idle time from screensaver extension");
            break;
        }
        
        /* monitor->info->idle is time in milliseconds since last user interaction event */
        idle_time = MIN(monitor->info->idle, idle_time);
    }
    
    was_idle = monitor->currently_idle;
    
    /* If the idle time has gone down, there must have been activity since we last checked */
    if (idle_time < monitor->last_idle) {
        monitor->activity_time = get_time();
        monitor->currently_idle = FALSE;
    } else {
        /* If no activity, see how long ago it was and count ourselves idle 
         * if it's been a short while. We keep this idle really short, since it
         * simply results in keeping bubbles up; we want to do this if people 
         * just look away for a minute, really. It can be "more aggressive" 
         * about idle detection than a screensaver would be.
         */
        GTime now = get_time();
        if (now < monitor->activity_time) {
            /* clock went backward... just "catch up" 
             * then wait until the idle timeout expires again
             */
            monitor->activity_time = now;
        } else if ((now - monitor->activity_time) > 120) { /* 120 = 2 minutes */
            monitor->currently_idle = TRUE;
        }
    }
 
    monitor->last_idle = idle_time;
    
    if (was_idle != monitor->currently_idle) {
        (* monitor->func) (monitor->currently_idle, monitor->data);
    }

    if (hippo_data_cache_get_application_usage_enabled(monitor->cache) && !monitor->currently_idle) {
        update_application_info(monitor);
    }
    
    return TRUE;
}

static gboolean
gdk_check_xpending (GdkDisplay *display)
{
  return XPending (GDK_DISPLAY_XDISPLAY (display));
}

bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long)
{
    if (show == m_fsIsShowing)
        return false; // return what?

    m_fsIsShowing = show;

#ifdef GDK_WINDOWING_X11
    Display* xdpy = GDK_DISPLAY_XDISPLAY(gtk_widget_get_display(m_widget));
    Window xroot = GDK_WINDOW_XID(gtk_widget_get_root_window(m_widget));
    wxX11FullScreenMethod method = wxGetFullScreenMethodX11(xdpy, (WXWindow)xroot);

    // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
    //     to switch to fullscreen, which is not always available. We must
    //     check if WM supports the spec and use legacy methods if it
    //     doesn't.
    if ( method == wxX11_FS_WMSPEC )
#endif // GDK_WINDOWING_X11
    {
        if (show)
            gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
        else
            gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
    }
#ifdef GDK_WINDOWING_X11
    else
    {
        GdkWindow* window = gtk_widget_get_window(m_widget);
        Window xid = GDK_WINDOW_XID(window);

        if (show)
        {
            GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
            GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );

            GdkScreen* screen = gtk_widget_get_screen(m_widget);
            const int screen_width = gdk_screen_get_width(screen);
            const int screen_height = gdk_screen_get_height(screen);

            gint client_x, client_y, root_x, root_y;
            gint width, height;

            m_fsSaveGdkFunc = m_gdkFunc;
            m_fsSaveGdkDecor = m_gdkDecor;
            m_gdkFunc = m_gdkDecor = 0;
            gdk_window_set_decorations(window, (GdkWMDecoration)0);
            gdk_window_set_functions(window, (GdkWMFunction)0);

            gdk_window_get_origin(window, &root_x, &root_y);
            gdk_window_get_geometry(window, &client_x, &client_y, &width, &height);

            gdk_window_move_resize(
                window, -client_x, -client_y, screen_width + 1, screen_height + 1);

            wxSetFullScreenStateX11(xdpy,
                                    (WXWindow)xroot,
                                    (WXWindow)xid,
                                    show, &m_fsSaveFrame, method);
        }
        else // hide
        {
            m_gdkFunc = m_fsSaveGdkFunc;
            m_gdkDecor = m_fsSaveGdkDecor;
            gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
            gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);

            wxSetFullScreenStateX11(xdpy,
                                    (WXWindow)xroot,
                                    (WXWindow)xid,
                                    show, &m_fsSaveFrame, method);

            SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
                    m_fsSaveFrame.width, m_fsSaveFrame.height);
        }
    }
#endif // GDK_WINDOWING_X11

    // documented behaviour is to show the window if it's still hidden when
    // showing it full screen
    if (show)
        Show();

    return true;
}