C++ CLUTTER_ACTOR函数代码示例

static void
setup_window (void)
{
  GtkWidget *vbox;
  GtkWidget *packing;
  GtkWidget *menubar;

  GtkUIManager *ui_manager;
  GtkAccelGroup *accel_group;
  ClutterColor stage_color = {0x00,0x00,0x00,0xff};

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  clutter_widget = gtk_clutter_embed_new ();
  stage = gtk_clutter_embed_get_stage (GTK_CLUTTER_EMBED (clutter_widget));

  clutter_stage_set_color (CLUTTER_STAGE(stage), &stage_color);

  clutter_actor_set_size (CLUTTER_ACTOR (stage),
                          properties->tilesize * BOARDWIDTH,
                          properties->tilesize * BOARDHEIGHT);
  clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), FALSE);

  board = gnibbles_board_new ();

  gtk_window_set_title (GTK_WINDOW (window), _("Nibbles"));

  gtk_window_set_default_size (GTK_WINDOW (window),
                               DEFAULT_WIDTH, DEFAULT_HEIGHT);
  games_conf_add_window (GTK_WINDOW (window), KEY_PREFERENCES_GROUP);

  g_signal_connect (G_OBJECT (window), "destroy",
                    G_CALLBACK (gtk_main_quit), NULL);
  g_signal_connect (G_OBJECT (window), "delete_event",
                    G_CALLBACK (delete_cb), NULL);
  g_signal_connect (G_OBJECT (window), "window_state_event",
                    G_CALLBACK (window_state_cb), NULL);

  gtk_widget_realize (window);

  vbox = gtk_vbox_new (FALSE, 0);

  games_stock_init ();
  ui_manager = gtk_ui_manager_new ();
  create_menus (ui_manager);
  set_fullscreen_actions (FALSE);
  notebook = gtk_notebook_new ();
  gtk_notebook_set_show_tabs (GTK_NOTEBOOK (notebook), FALSE);

  accel_group = gtk_ui_manager_get_accel_group (ui_manager);
  gtk_window_add_accel_group (GTK_WINDOW (window), accel_group);

  menubar = gtk_ui_manager_get_widget (ui_manager, "/MainMenu");

  gtk_box_pack_start (GTK_BOX (vbox), menubar, FALSE, FALSE, 0);

  packing = games_grid_frame_new (BOARDWIDTH, BOARDHEIGHT);
  gtk_widget_show (packing);

  gtk_container_add (GTK_CONTAINER (packing), clutter_widget);

#ifdef GGZ_CLIENT
  chat = create_chat_widget ();
  gtk_box_pack_start (GTK_BOX (vbox), chat, FALSE, TRUE, 0);
#endif

  g_signal_connect (G_OBJECT (clutter_widget), "configure_event",
                    G_CALLBACK (configure_event_cb), NULL);

  g_signal_connect (G_OBJECT (window), "focus_out_event",
                    G_CALLBACK (show_cursor_cb), NULL);

  gtk_box_pack_start (GTK_BOX (vbox), notebook, TRUE, TRUE, 0);
  gtk_notebook_append_page (GTK_NOTEBOOK (notebook), packing, NULL);
  gtk_notebook_set_current_page (GTK_NOTEBOOK (notebook), MAIN_PAGE);

  statusbar = gtk_statusbar_new ();
  gtk_box_pack_start (GTK_BOX (vbox), statusbar, FALSE, FALSE, 0);

  gtk_container_add (GTK_CONTAINER (window), vbox);

  gtk_widget_show_all (window);
#ifdef GGZ_CLIENT
  gtk_widget_hide (chat);
#endif

  scoreboard = gnibbles_scoreboard_new (statusbar);
}

/* Quit application depending on daemon mode and force parameter */
static void _xfdashboard_application_quit(XfdashboardApplication *self, gboolean inForceQuit)
{
	XfdashboardApplicationPrivate	*priv;
	gboolean						shouldQuit;
	GSList							*stages, *entry;

	g_return_if_fail(XFDASHBOARD_IS_APPLICATION(self));

	priv=self->priv;
	shouldQuit=FALSE;

	/* Check if we should really quit this instance */
	if(inForceQuit==TRUE || priv->isDaemon==FALSE) shouldQuit=TRUE;

	/* Do nothing if application is already quitting. This can happen if
	 * application is running in daemon mode (primary instance) and another
	 * instance was called with "quit" or "restart" parameter which would
	 * cause this function to be called twice.
	 */
	if(priv->isQuitting) return;

	/* If application is not in daemon mode or if forced is set to TRUE
	 * destroy all stage windows ...
	 */
	if(shouldQuit==TRUE)
	{
		/* Set flag that application is going to quit */
		priv->isQuitting=TRUE;

		/* If application is told to quit, set the restart style to something
		 * where it won't restart itself.
		 */
		if(priv->sessionManagementClient &&
			XFCE_IS_SM_CLIENT(priv->sessionManagementClient))
		{
			xfce_sm_client_set_restart_style(priv->sessionManagementClient, XFCE_SM_CLIENT_RESTART_NORMAL);
		}

		/* Destroy stages */
		stages=clutter_stage_manager_list_stages(clutter_stage_manager_get_default());
		for(entry=stages; entry!=NULL; entry=g_slist_next(entry)) clutter_actor_destroy(CLUTTER_ACTOR(entry->data));
		g_slist_free(stages);

		/* Emit "quit" signal */
		g_signal_emit(self, XfdashboardApplicationSignals[SIGNAL_QUIT], 0);

		/* Really quit application here and now */
		if(priv->inited) clutter_main_quit();
	}
		/* ... otherwise emit "suspend" signal */
		else
		{
			/* Only send signal if not suspended already */
			if(!priv->isSuspended)
			{
				/* Send signal */
				g_signal_emit(self, XfdashboardApplicationSignals[SIGNAL_SUSPEND], 0);

				/* Set flag for suspension */
				priv->isSuspended=TRUE;
				g_object_notify_by_pspec(G_OBJECT(self), XfdashboardApplicationProperties[PROP_SUSPENDED]);
			}
		}
}

static void
clutter_flow_layout_get_preferred_height (ClutterLayoutManager *manager,
                                          ClutterContainer     *container,
                                          gfloat                for_width,
                                          gfloat               *min_height_p,
                                          gfloat               *nat_height_p)
{
  ClutterFlowLayoutPrivate *priv = CLUTTER_FLOW_LAYOUT (manager)->priv;
  gint n_columns, line_item_count, line_count;
  gfloat total_min_height, total_natural_height;
  gfloat line_min_height, line_natural_height;
  gfloat max_min_height, max_natural_height;
  ClutterActor *actor, *child;
  ClutterActorIter iter;
  gfloat item_x;

  n_columns = get_columns (CLUTTER_FLOW_LAYOUT (manager), for_width);

  total_min_height = 0;
  total_natural_height = 0;

  line_min_height = 0;
  line_natural_height = 0;

  line_item_count = 0;
  line_count = 0;

  item_x = 0;

  actor = CLUTTER_ACTOR (container);

  /* clear the line height arrays */
  if (priv->line_min != NULL)
    g_array_free (priv->line_min, TRUE);

  if (priv->line_natural != NULL)
    g_array_free (priv->line_natural, TRUE);

  priv->line_min = g_array_sized_new (FALSE, FALSE,
                                      sizeof (gfloat),
                                      16);
  priv->line_natural = g_array_sized_new (FALSE, FALSE,
                                          sizeof (gfloat),
                                          16);

  if (clutter_actor_get_n_children (actor) != 0)
    line_count = 1;

  max_min_height = max_natural_height = 0;

  clutter_actor_iter_init (&iter, actor);
  while (clutter_actor_iter_next (&iter, &child))
    {
      gfloat child_min, child_natural;
      gfloat new_x, item_width;

      if (!CLUTTER_ACTOR_IS_VISIBLE (child))
        continue;

      if (priv->orientation == CLUTTER_FLOW_HORIZONTAL && for_width > 0)
        {
          clutter_actor_get_preferred_width (child, -1,
                                             &child_min,
                                             &child_natural);

          if ((priv->snap_to_grid && line_item_count == n_columns) ||
              (!priv->snap_to_grid && item_x + child_natural > for_width))
            {
              total_min_height += line_min_height;
              total_natural_height += line_natural_height;

              g_array_append_val (priv->line_min,
                                  line_min_height);
              g_array_append_val (priv->line_natural,
                                  line_natural_height);

              line_min_height = line_natural_height = 0;

              line_item_count = 0;
              line_count += 1;
              item_x = 0;
            }

          if (priv->snap_to_grid)
            {
              new_x = ((line_item_count + 1) * (for_width + priv->col_spacing))
                    / n_columns;
              item_width = new_x - item_x - priv->col_spacing;
            }
          else
            {
              new_x = item_x + child_natural + priv->col_spacing;
              item_width = child_natural;
            }

          clutter_actor_get_preferred_height (child, item_width,
                                              &child_min,
                                              &child_natural);

          line_min_height = MAX (line_min_height, child_min);
//.........这里部分代码省略.........

static void
mx_button_style_changed (MxWidget *widget)
{
  MxButton *button = MX_BUTTON (widget);
  MxButtonPrivate *priv = button->priv;
  MxBorderImage *content_image = NULL;

  /* update the label styling */
  mx_button_update_label_style (button);

  g_free (priv->style_icon_name);
  mx_stylable_get (MX_STYLABLE (widget),
                   "x-mx-content-image", &content_image,
                   "x-mx-icon-name", &priv->style_icon_name,
                   "x-mx-icon-size", &priv->style_icon_size,
                   NULL);

  if (content_image && content_image->uri)
    {
      if (priv->content_image)
        {
          clutter_actor_remove_child (CLUTTER_ACTOR (widget),
                                      priv->content_image);
        }

      priv->content_image =
        (ClutterActor*) mx_texture_cache_get_texture (mx_texture_cache_get_default (),
                                                      content_image->uri);

      if (priv->content_image)
        clutter_actor_add_child (CLUTTER_ACTOR (widget), priv->content_image);
      else
        g_warning ("Could not load content image \"%s\"", content_image->uri);

      g_boxed_free (MX_TYPE_BORDER_IMAGE, content_image);

      return;
    }
  else
    {
      /* remove any previous content image */
      if (priv->content_image)
        {
          clutter_actor_remove_child (CLUTTER_ACTOR (widget),
                                      priv->content_image);
          priv->content_image = NULL;
        }

      if (content_image)
        g_boxed_free (MX_TYPE_BORDER_IMAGE, content_image);
    }

  if (priv->icon_size == 0)
    mx_icon_set_icon_size (MX_ICON (priv->icon), priv->style_icon_size);

  if (priv->style_icon_name && !priv->icon_name)
    {
      mx_icon_set_icon_name (MX_ICON (priv->icon), priv->style_icon_name);
      mx_button_update_contents (button);
    }
}

static void
mex_telepathy_channel_on_src_pad_added (TfContent *content,
                                        TpHandle   handle,
                                        FsStream  *stream,
                                        GstPad    *pad,
                                        FsCodec   *codec,
                                        gpointer   user_data)
{
  MexTelepathyChannel *self = MEX_TELEPATHY_CHANNEL (user_data);
  MexTelepathyChannelPrivate *priv = self->priv;

  gchar *cstr = fs_codec_to_string (codec);
  FsMediaType mtype;
  GstPad *sinkpad;
  GstElement *element;
  GstStateChangeReturn ret;

  /* Upon pad added, clear the "in progress" box+padding */
  clutter_actor_hide (CLUTTER_ACTOR (priv->busy_box));
  clutter_actor_show (CLUTTER_ACTOR (priv->full_frame) );

  MEX_DEBUG ("New src pad: %s", cstr);
  g_object_get (content, "media-type", &mtype, NULL);

  switch (mtype)
    {
    case FS_MEDIA_TYPE_AUDIO:
      element = gst_parse_bin_from_description (
        "audioconvert ! audioresample ! audioconvert ! autoaudiosink",
        TRUE, NULL);
      break;
    case FS_MEDIA_TYPE_VIDEO:
      element = priv->incoming_sink;
      break;
    default:
      MEX_WARNING ("Unknown media type");
      return;
    }

  if (!gst_bin_add (GST_BIN (priv->pipeline), element))
    {
      MEX_WARNING ("Failed to add sink element to pipeline");
    }
  sinkpad = gst_element_get_pad (element, "sink");
  ret = gst_element_set_state (element, GST_STATE_PLAYING);
  if (ret == GST_STATE_CHANGE_FAILURE)
    {
      tp_channel_close_async (TP_CHANNEL (priv->channel), NULL, NULL);
      MEX_WARNING ("Failed to start tee sink pipeline !?");
      return;
    }

  if (GST_PAD_LINK_FAILED (gst_pad_link (pad, sinkpad)))
    {
      tp_channel_close_async (TP_CHANNEL (priv->channel), NULL, NULL);
      MEX_WARNING ("Couldn't link sink pipeline !?");
      return;
    }

  g_object_unref (sinkpad);

  /* Start in FULL mode */
  mex_telepathy_channel_set_tool_mode (self, TOOL_MODE_FULL, 100);
}

void
mnb_zones_preview_change_workspace (MnbZonesPreview *preview,
                                    gint             workspace)
{
  gboolean reset_anim;
  MnbZonesPreviewPrivate *priv = preview->priv;

  /* If we're already going towards this workspace, ignore */
  if ((priv->dest_workspace == workspace) && priv->anim_phase)
    return;

  /* Figure out what we need to be doing with this animation */
  switch (priv->anim_phase)
    {
    default:
    case MNB_ZP_STATIC:
      /* We weren't animating, start a new one */
      reset_anim = TRUE;
      break;

    case MNB_ZP_ZOOM_OUT:
      /* If we're on the right workspace, zoom in and finish, otherwise
       * continue the animation like normal.
       */
      if (priv->dest_workspace == workspace)
        {
          priv->anim_phase = MNB_ZP_PAN;
          reset_anim = TRUE;
        }
      else
        reset_anim = FALSE;
      break;

    case MNB_ZP_PAN:
      /* If we're heading towards the right workspace, continue the
       * animation, otherwise change direction.
       */
      if (priv->dest_workspace != workspace)
        {
          priv->anim_phase = MNB_ZP_ZOOM_OUT;
          reset_anim = TRUE;
        }
      else
        reset_anim = FALSE;
      break;

    case MNB_ZP_ZOOM_IN:
      /* Restart the animation if we're not heading towards the right
       * workspace.
       */
      if (priv->dest_workspace != workspace)
        {
          priv->anim_phase = MNB_ZP_STATIC;
          reset_anim = TRUE;
        }
      else
        reset_anim = FALSE;
      break;
    }

  priv->dest_workspace = workspace;
  if (reset_anim)
    {
      ClutterAnimation *animation =
        clutter_actor_get_animation (CLUTTER_ACTOR (preview));

      if (animation)
        g_signal_handlers_disconnect_by_func (animation,
                                              mnb_zones_preview_completed_cb,
                                              preview);

      mnb_zones_preview_completed_cb (animation, preview);
    }
}

//.........这里部分代码省略.........
 * This method returns a new #ClutterActor for a given #GIcon. If the
 * icon isn't loaded already, the texture will be filled
 * asynchronously.
 *
 * Return Value: (transfer none): A new #ClutterActor for the icon, or %NULL if not found
 */
ClutterActor *
st_texture_cache_load_gicon (StTextureCache    *cache,
                             StThemeNode       *theme_node,
                             GIcon             *icon,
                             gint               size,
                             gint               scale)
{
  AsyncTextureLoadData *request;
  ClutterActor *texture;
  char *gicon_string;
  char *key;
  GtkIconTheme *theme;
  GtkIconInfo *info;
  StTextureCachePolicy policy;
  StIconColors *colors = NULL;
  StIconStyle icon_style = ST_ICON_STYLE_REQUESTED;
  GtkIconLookupFlags lookup_flags;

  if (theme_node)
    {
      colors = st_theme_node_get_icon_colors (theme_node);
      icon_style = st_theme_node_get_icon_style (theme_node);
    }

  /* Do theme lookups in the main thread to avoid thread-unsafety */
  theme = cache->priv->icon_theme;

  lookup_flags = GTK_ICON_LOOKUP_USE_BUILTIN;

  if (icon_style == ST_ICON_STYLE_REGULAR)
    lookup_flags |= GTK_ICON_LOOKUP_FORCE_REGULAR;
  else if (icon_style == ST_ICON_STYLE_SYMBOLIC)
    lookup_flags |= GTK_ICON_LOOKUP_FORCE_SYMBOLIC;

  if (clutter_get_default_text_direction () == CLUTTER_TEXT_DIRECTION_RTL)
    lookup_flags |= GTK_ICON_LOOKUP_DIR_RTL;
  else
    lookup_flags |= GTK_ICON_LOOKUP_DIR_LTR;

  info = gtk_icon_theme_lookup_by_gicon_for_scale (theme, icon, size, scale, lookup_flags);
  if (info == NULL)
    return NULL;

  gicon_string = g_icon_to_string (icon);
  /* A return value of NULL indicates that the icon can not be serialized,
   * so don't have a unique identifier for it as a cache key, and thus can't
   * be cached. If it is cachable, we hardcode a policy of FOREVER here for
   * now; we should actually blow this away on icon theme changes probably */
  policy = gicon_string != NULL ? ST_TEXTURE_CACHE_POLICY_FOREVER
                                : ST_TEXTURE_CACHE_POLICY_NONE;
  if (colors)
    {
      /* This raises some doubts about the practice of using string keys */
      key = g_strdup_printf (CACHE_PREFIX_ICON "%s,size=%d,scale=%d,style=%d,colors=%2x%2x%2x%2x,%2x%2x%2x%2x,%2x%2x%2x%2x,%2x%2x%2x%2x",
                             gicon_string, size, scale, icon_style,
                             colors->foreground.red, colors->foreground.blue, colors->foreground.green, colors->foreground.alpha,
                             colors->warning.red, colors->warning.blue, colors->warning.green, colors->warning.alpha,
                             colors->error.red, colors->error.blue, colors->error.green, colors->error.alpha,
                             colors->success.red, colors->success.blue, colors->success.green, colors->success.alpha);
    }
  else
    {
      key = g_strdup_printf (CACHE_PREFIX_ICON "%s,size=%d,scale=%d,style=%d",
                             gicon_string, size, scale, icon_style);
    }
  g_free (gicon_string);

  texture = (ClutterActor *) create_default_texture ();
  clutter_actor_set_size (texture, size * scale, size * scale);

  if (ensure_request (cache, key, policy, &request, texture))
    {
      /* If there's an outstanding request, we've just added ourselves to it */
      g_object_unref (info);
      g_free (key);
    }
  else
    {
      /* Else, make a new request */

      request->cache = cache;
      /* Transfer ownership of key */
      request->key = key;
      request->policy = policy;
      request->colors = colors ? st_icon_colors_ref (colors) : NULL;
      request->icon_info = info;
      request->width = request->height = size;
      request->scale = scale;

      load_texture_async (cache, request);
    }

  return CLUTTER_ACTOR (texture);
}

static void
gnibbles_board_load_level (GnibblesBoard *board)
{
  gint i,j;
  gint x_pos, y_pos;
  ClutterActor *tmp;
  gboolean is_wall = TRUE;

  if (board->level) {
    clutter_group_remove_all (CLUTTER_GROUP (board->level));
    clutter_container_remove_actor (CLUTTER_CONTAINER (stage), board->level);
  }

  board->level = clutter_group_new ();

  /* Load wall_pixmaps onto the surface*/
  for (i = 0; i < BOARDHEIGHT; i++) {
    y_pos = i * properties->tilesize;
    for (j = 0; j < BOARDWIDTH; j++) {
      is_wall = TRUE;
      switch (board->walls[j][i]) {
        case 'a': // empty space
          is_wall = FALSE;
          break; // break right away
        case 'b': // straight up
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[0]);
          break;
        case 'c': // straight side
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[1]);
          break;
        case 'd': // corner bottom left
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[2]);
          break;
        case 'e': // corner bottom right
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[3]);
          break;
          case 'f': // corner up left
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[4]);
          break;
        case 'g': // corner up right
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[5]);
          break;
        case 'h': // tee up
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[6]);
          break;
        case 'i': // tee right
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[7]);
          break;
        case 'j': // tee left
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[8]);
          break;
        case 'k': // tee down
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[9]);
          break;
        case 'l': // cross
          tmp = gtk_clutter_texture_new_from_pixbuf (wall_pixmaps[10]);
          break;
        default:
          is_wall = FALSE;
          break;
      }

      if (is_wall) {
        x_pos = j * properties->tilesize;

        clutter_actor_set_size (CLUTTER_ACTOR(tmp),
                                properties->tilesize,
                                properties->tilesize);

        clutter_actor_set_position (CLUTTER_ACTOR (tmp), x_pos, y_pos);
        clutter_actor_show (CLUTTER_ACTOR (tmp));
        clutter_container_add_actor (CLUTTER_CONTAINER (board->level),
                                     CLUTTER_ACTOR (tmp));
      }
    }
  }

  clutter_container_add_actor (CLUTTER_CONTAINER (stage), board->level);
  clutter_actor_raise (board->level, board->surface);

  clutter_actor_set_opacity (board->level, 0);
  clutter_actor_set_scale (CLUTTER_ACTOR (board->level), 0.2, 0.2);
  clutter_actor_animate (board->level, CLUTTER_EASE_OUT_BOUNCE, 1210,
                         "opacity", 0xff,
                         "fixed::scale-gravity", CLUTTER_GRAVITY_CENTER,
                         "scale-x", 1.0,
                         "scale-y", 1.0,
                         NULL);
}

static void
mex_music_player_init (MexMusicPlayer *self)
{
  GError *error = NULL;
  ClutterActor *box;
  MexMusicPlayerPrivate *priv;
  ClutterActor *button;

  priv = self->priv = MUSIC_PLAYER_PRIVATE (self);

  priv->script = clutter_script_new ();
  clutter_script_load_from_resource (priv->script,
                                     "/org/media-explorer/MediaExplorer/json/"
                                     "music-player.json",
                                     &error);

  if (error)
    {
      g_error (G_STRLOC " %s", error->message);
      g_clear_error (&error);
    }

  box = mex_script_get_actor (priv->script, "box");
  g_assert (box);

  clutter_actor_add_child (CLUTTER_ACTOR (self), box);


  /* labels */
  priv->title_label = mex_script_get_actor (priv->script, "title-label");
  priv->subtitle_label = mex_script_get_actor (priv->script, "subtitle-label");

  /* play */
  priv->play_button = mex_script_get_actor (priv->script, "play-button");
  g_signal_connect_swapped (priv->play_button, "clicked",
                            G_CALLBACK (mex_music_player_play_toggle), self);

  /* next */
  button = mex_script_get_actor (priv->script, "next-button");
  g_signal_connect_swapped (button, "clicked",
                            G_CALLBACK (mex_music_player_next), self);

  /* previous */
  button = mex_script_get_actor (priv->script, "previous-button");
  g_signal_connect_swapped (button, "clicked",
                            G_CALLBACK (mex_music_player_previous), self);

  /* stop */
  button = mex_script_get_actor (priv->script, "stop-button");
  g_signal_connect_swapped (button, "clicked",
                            G_CALLBACK (mex_music_player_quit), self);

  /* repeat */
  button = mex_script_get_actor (priv->script, "repeat-button");
  g_signal_connect_swapped (button, "notify::toggled",
                            G_CALLBACK (mex_music_player_repeat_toggled), self);

  button = mex_script_get_actor (priv->script, "shuffle-button");
  g_signal_connect_swapped (button, "notify::toggled",
                            G_CALLBACK (mex_music_player_shuffle_toggled), self);


  /* player */
  priv->player = (ClutterMedia *) clutter_gst_video_texture_new ();
  g_signal_connect (priv->player, "notify",
                    G_CALLBACK (mex_music_player_notify_cb), self);
  g_signal_connect (priv->player, "eos",
                    G_CALLBACK (mex_music_player_eos_cb), self);

  /* slider */
  priv->slider = mex_script_get_actor (priv->script, "progress-slider");
  priv->slider_notify_id = g_signal_connect (priv->slider, "notify::value",
                                             G_CALLBACK (mex_music_player_slider_notify),
                                             self);


  g_signal_connect (self, "captured-event",
                    G_CALLBACK (mex_music_player_captured_event), NULL);
}

static void
clone_source_queue_relayout_cb (ClutterActor *source,
				ClutterClone *self)
{
  clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
}

static void
clutter_flow_layout_get_preferred_width (ClutterLayoutManager *manager,
                                         ClutterContainer     *container,
                                         gfloat                for_height,
                                         gfloat               *min_width_p,
                                         gfloat               *nat_width_p)
{
  ClutterFlowLayoutPrivate *priv = CLUTTER_FLOW_LAYOUT (manager)->priv;
  gint n_rows, line_item_count, line_count;
  gfloat total_min_width, total_natural_width;
  gfloat line_min_width, line_natural_width;
  gfloat max_min_width, max_natural_width;
  ClutterActor *actor, *child;
  ClutterActorIter iter;
  gfloat item_y;

  n_rows = get_rows (CLUTTER_FLOW_LAYOUT (manager), for_height);

  total_min_width = 0;
  total_natural_width = 0;

  line_min_width = 0;
  line_natural_width = 0;

  line_item_count = 0;
  line_count = 0;

  item_y = 0;

  actor = CLUTTER_ACTOR (container);

  /* clear the line width arrays */
  if (priv->line_min != NULL)
    g_array_free (priv->line_min, TRUE);

  if (priv->line_natural != NULL)
    g_array_free (priv->line_natural, TRUE);

  priv->line_min = g_array_sized_new (FALSE, FALSE,
                                      sizeof (gfloat),
                                      16);
  priv->line_natural = g_array_sized_new (FALSE, FALSE,
                                          sizeof (gfloat),
                                          16);

  if (clutter_actor_get_n_children (actor) != 0)
    line_count = 1;

  max_min_width = max_natural_width = 0;

  clutter_actor_iter_init (&iter, actor);
  while (clutter_actor_iter_next (&iter, &child))
    {
      gfloat child_min, child_natural;
      gfloat new_y, item_height;

      if (!CLUTTER_ACTOR_IS_VISIBLE (child))
        continue;

      if (priv->orientation == CLUTTER_FLOW_VERTICAL && for_height > 0)
        {
          if (line_item_count == n_rows)
            {
              total_min_width += line_min_width;
              total_natural_width += line_natural_width;

              g_array_append_val (priv->line_min,
                                  line_min_width);
              g_array_append_val (priv->line_natural,
                                  line_natural_width);

              line_min_width = line_natural_width = 0;

              line_item_count = 0;
              line_count += 1;
              item_y = 0;
            }

          new_y = ((line_item_count + 1) * (for_height + priv->row_spacing))
                / n_rows;
          item_height = new_y - item_y - priv->row_spacing;

          clutter_actor_get_preferred_width (child, item_height,
                                             &child_min,
                                             &child_natural);

          line_min_width = MAX (line_min_width, child_min);
          line_natural_width = MAX (line_natural_width, child_natural);

          item_y = new_y;
          line_item_count += 1;

          max_min_width = MAX (max_min_width, line_min_width);
          max_natural_width = MAX (max_natural_width, line_natural_width);
        }
      else
        {
          clutter_actor_get_preferred_width (child, for_height,
                                             &child_min,
                                             &child_natural);
//.........这里部分代码省略.........

static gboolean
st_container_navigate_focus (StWidget         *widget,
                             ClutterActor     *from,
                             GtkDirectionType  direction)
{
  StContainer *container = ST_CONTAINER (widget);
  ClutterActor *container_actor, *focus_child;
  GList *children, *l;

  container_actor = CLUTTER_ACTOR (widget);
  if (from == container_actor)
    return FALSE;

  /* Figure out if @from is a descendant of @container, and if so,
   * set @focus_child to the immediate child of @container that
   * contains (or *is*) @from.
   */
  focus_child = from;
  while (focus_child && clutter_actor_get_parent (focus_child) != container_actor)
    focus_child = clutter_actor_get_parent (focus_child);

  if (st_widget_get_can_focus (widget))
    {
      if (!focus_child)
        {
          /* Accept focus from outside */
          clutter_actor_grab_key_focus (container_actor);
          return TRUE;
        }
      else
        {
          /* Yield focus from within: since @container itself is
           * focusable we don't allow the focus to be navigated
           * within @container.
           */
          return FALSE;
        }
    }

  /* See if we can navigate within @focus_child */
  if (focus_child && ST_IS_WIDGET (focus_child))
    {
      if (st_widget_navigate_focus (ST_WIDGET (focus_child), from, direction, FALSE))
        return TRUE;
    }

  /* At this point we know that we want to navigate focus to one of
   * @container's immediate children; the next one after @focus_child,
   * or the first one if @focus_child is %NULL. (With "next" and
   * "first" being determined by @direction.)
   */

  children = st_container_get_focus_chain (container);
  if (direction == GTK_DIR_TAB_FORWARD ||
      direction == GTK_DIR_TAB_BACKWARD)
    {
      if (direction == GTK_DIR_TAB_BACKWARD)
        children = g_list_reverse (children);

      if (focus_child)
        {
          /* Remove focus_child and any earlier children */
          while (children && children->data != focus_child)
            children = g_list_delete_link (children, children);
          if (children)
            children = g_list_delete_link (children, children);
        }
    }
  else /* direction is an arrow key, not tab */
    {
      StContainerChildSortData sort_data;

      /* Compute the allocation box of the previous focused actor, in
       * @container's coordinate space. If there was no previous focus,
       * use the coordinates of the appropriate edge of @container.
       *
       * Note that all of this code assumes the actors are not
       * transformed (or at most, they are all scaled by the same
       * amount). If @container or any of its children is rotated, or
       * any child is inconsistently scaled, then the focus chain will
       * probably be unpredictable.
       */
      if (focus_child)
        {
          clutter_actor_get_allocation_box (focus_child, &sort_data.box);
        }
      else
        {
          clutter_actor_get_allocation_box (CLUTTER_ACTOR (container), &sort_data.box);
          switch (direction)
            {
            case GTK_DIR_UP:
              sort_data.box.y1 = sort_data.box.y2;
              break;
            case GTK_DIR_DOWN:
              sort_data.box.y2 = sort_data.box.y1;
              break;
            case GTK_DIR_LEFT:
              sort_data.box.x1 = sort_data.box.x2;
              break;
//.........这里部分代码省略.........

static void
render_logo (void)
{
  ClutterActor *image;
  ClutterActor *text, *text_shadow;
  ClutterActor *desc, *desc_shadow;
  ClutterColor actor_color = {0xff,0xff,0xff,0xff};
  ClutterColor shadow_color = {0x00, 0x00, 0x00, 0x88};
  ClutterActor *text_group;
  static gint width, height;
  gint size;
  gfloat stage_w, stage_h;
  PangoFontDescription *pfd;
  PangoLayout *layout;
  PangoContext *context;

  gchar *nibbles = _("Nibbles");
  /* Translators: This string will be included in the intro screen, so don't make sure it fits! */
  gchar *description = _("A worm game for MATE.");

  logo = clutter_group_new ();
  text_group = clutter_group_new ();

  if (!logo_pixmap)
    gnibbles_load_logo (properties->tilesize);

  image = gtk_clutter_texture_new_from_pixbuf (logo_pixmap);

  stage_w = board->width * properties->tilesize;
  stage_h = board->height * properties->tilesize;

  clutter_actor_set_size (CLUTTER_ACTOR (image), stage_w, stage_h);

  clutter_actor_set_position (CLUTTER_ACTOR (image), 0, 0);
  clutter_actor_show (image);

  text = clutter_text_new ();
  clutter_text_set_color (CLUTTER_TEXT (text), &actor_color);

  context = gdk_pango_context_get ();
  layout = clutter_text_get_layout (CLUTTER_TEXT (text));
  pfd = pango_context_get_font_description (context);
  size = pango_font_description_get_size (pfd);

  pango_font_description_set_size (pfd, (size * stage_w) / 100);
  pango_font_description_set_family (pfd, "Sans");
  pango_font_description_set_weight(pfd, PANGO_WEIGHT_BOLD);
  pango_layout_set_font_description (layout, pfd);
  pango_layout_set_text (layout, nibbles, -1);
  pango_layout_get_pixel_size (layout, &width, &height);

  text_shadow = clutter_text_new ();
  clutter_text_set_color (CLUTTER_TEXT (text_shadow), &shadow_color);

  layout = clutter_text_get_layout (CLUTTER_TEXT (text_shadow));
  pango_layout_set_font_description (layout, pfd);
  pango_layout_set_text (layout, nibbles, -1);

  clutter_actor_set_position (CLUTTER_ACTOR (text),
                              (stage_w - width) * 0.5 ,
                              stage_h * .72);
  clutter_actor_set_position (CLUTTER_ACTOR (text_shadow),
                              (stage_w - width) * 0.5 + 5,
                              stage_h * .72 + 5);

  desc = clutter_text_new ();
  layout = clutter_text_get_layout (CLUTTER_TEXT (desc));

  clutter_text_set_color (CLUTTER_TEXT (desc), &actor_color);
  pango_font_description_set_size (pfd, (size * stage_w) / 400);
  pango_layout_set_font_description (layout, pfd);
  pango_layout_set_text (layout, description, -1);
  pango_layout_get_pixel_size(layout, &width, &height);

  desc_shadow = clutter_text_new ();
  layout = clutter_text_get_layout (CLUTTER_TEXT (desc_shadow));
  clutter_text_set_color (CLUTTER_TEXT (desc_shadow), &shadow_color);

  pango_font_description_set_size (pfd, (size * stage_w) / 400);
  pango_layout_set_font_description (layout, pfd);
  pango_layout_set_text (layout, description, -1);

  clutter_actor_set_position (CLUTTER_ACTOR (desc),
                              (stage_w - width) * 0.5,
                              stage_h* .93);
  clutter_actor_set_position (CLUTTER_ACTOR (desc_shadow),
                              (stage_w - width) * 0.5 + 3,
                              stage_h * .93 + 3);

  clutter_container_add (CLUTTER_CONTAINER (text_group),
                         CLUTTER_ACTOR (text_shadow),
                         CLUTTER_ACTOR (text),
                         CLUTTER_ACTOR (desc_shadow),
                         CLUTTER_ACTOR (desc),
                         NULL);
  clutter_container_add (CLUTTER_CONTAINER (logo),
                         CLUTTER_ACTOR (image),
                         CLUTTER_ACTOR (text_group),
                         NULL);

//.........这里部分代码省略.........

static void _xfdashboard_text_box_get_preferred_width(ClutterActor *self,
														gfloat inForHeight,
														gfloat *outMinWidth,
														gfloat *outNaturalWidth)
{
	XfdashboardTextBoxPrivate	*priv=XFDASHBOARD_TEXT_BOX(self)->priv;
	gfloat						minWidth, naturalWidth;
	gfloat						childMinWidth, childNaturalWidth;
	gint						numberChildren=0;

	minWidth=naturalWidth=0.0f;

	/* Determine size of primary icon if visible */
	if(CLUTTER_ACTOR_IS_VISIBLE(priv->actorPrimaryIcon))
	{
		clutter_actor_get_preferred_width(CLUTTER_ACTOR(priv->actorPrimaryIcon),
											inForHeight,
											&childMinWidth, &childNaturalWidth);

		minWidth+=childMinWidth;
		naturalWidth+=childNaturalWidth;
		numberChildren++;
	}

	/* Determine size of editable text box if visible */
	if(CLUTTER_ACTOR_IS_VISIBLE(priv->actorTextBox))
	{
		clutter_actor_get_preferred_width(CLUTTER_ACTOR(priv->actorTextBox),
											inForHeight,
											&childMinWidth, &childNaturalWidth);

		minWidth+=childMinWidth;
		naturalWidth+=childNaturalWidth;
		numberChildren++;
	}

	/* Determine size of hint label if visible */
	if(CLUTTER_ACTOR_IS_VISIBLE(priv->actorHintLabel))
	{
		clutter_actor_get_preferred_width(CLUTTER_ACTOR(priv->actorHintLabel),
											inForHeight,
											&childMinWidth, &childNaturalWidth);

		minWidth+=childMinWidth;
		naturalWidth+=childNaturalWidth;
		numberChildren++;
	}

	/* Determine size of secondary icon if visible */
	if(CLUTTER_ACTOR_IS_VISIBLE(priv->actorSecondaryIcon))
	{
		clutter_actor_get_preferred_width(CLUTTER_ACTOR(priv->actorSecondaryIcon),
											inForHeight,
											&childMinWidth, &childNaturalWidth);

		minWidth+=childMinWidth;
		naturalWidth+=childNaturalWidth;
	}

	/* Add spacing for each child except the last one */
	if(numberChildren>1)
	{
		numberChildren--;
		minWidth+=(numberChildren*priv->spacing);
		naturalWidth+=(numberChildren*priv->spacing);
	}

	// Add padding
	minWidth+=2*priv->padding;
	naturalWidth+=2*priv->padding;

	/* Store sizes computed */
	if(outMinWidth) *outMinWidth=minWidth;
	if(outNaturalWidth) *outNaturalWidth=naturalWidth;
}

static void
create_map_window (GourmapUi *ui)
{
	GourmapUiPrivate *priv;
	GtkWidget *hbox;
	GtkWidget *vbox1, *vbox2;
	GtkWidget *toolbar;
	GtkWidget *addr_label;
	GtkToolItem *item;
	GtkCellRenderer *renderer;
	GtkTreeViewColumn *column;
	GtkTreeSelection *select;

	priv = GET_PRIVATE (ui);
	hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
	vbox1 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
	vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);

	/* map */
	priv->map = gtk_champlain_embed_new ();
	priv->champ_view = gtk_champlain_embed_get_view (GTK_CHAMPLAIN_EMBED (priv->map));
	clutter_actor_set_reactive (CLUTTER_ACTOR (priv->champ_view), TRUE);
	g_object_set (G_OBJECT (priv->champ_view),
		      "kinetic-mode", TRUE,
		      NULL);
	priv->marker_layer = champlain_marker_layer_new_full (CHAMPLAIN_SELECTION_SINGLE);
	champlain_view_add_layer (priv->champ_view, CHAMPLAIN_LAYER (priv->marker_layer));

	/* sidebar */
	vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);

	/* restaurant list */
	priv->store = gtk_tree_store_new (N_COLUMNS, G_TYPE_STRING, G_TYPE_UINT);
	priv->treeview = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->store));
	renderer = gtk_cell_renderer_text_new ();
	column = gtk_tree_view_column_new_with_attributes (_("Restaurant List"),
							   renderer,
							   "text", NAME_COLUMN,
							   NULL);
	select = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));
	gtk_tree_selection_set_mode (select, GTK_SELECTION_SINGLE);
	g_signal_connect (G_OBJECT (select), "changed",
			  G_CALLBACK (tree_selection_changed_cb),
			  (gpointer) ui);
	gtk_tree_view_append_column (GTK_TREE_VIEW (priv->treeview), column);

	gtk_box_pack_start (GTK_BOX (vbox2), priv->treeview, TRUE, TRUE, 0);

	/* random button */
	priv->rand_button = gtk_button_new_with_label (_("Random Selection!"));
	g_signal_connect (G_OBJECT (priv->rand_button),
			  "clicked",
			  G_CALLBACK (random_button_cb),
			  (gpointer) ui);
	gtk_box_pack_start (GTK_BOX (vbox2), priv->rand_button, FALSE, FALSE, 0);

	gtk_box_pack_start (GTK_BOX (hbox), priv->map, TRUE, TRUE, 0);
	gtk_box_pack_start (GTK_BOX (hbox), vbox2, FALSE, FALSE, 0);

	/* address */
	toolbar = gtk_toolbar_new ();
	item = gtk_tool_item_new ();
	addr_label = gtk_label_new (_("Address"));
	gtk_container_add (GTK_CONTAINER (item), addr_label);
	gtk_toolbar_insert (GTK_TOOLBAR (toolbar), item, -1);

	item = gtk_tool_item_new ();
	gtk_tool_item_set_expand (item, TRUE);
	priv->addr_entry = gtk_entry_new ();
	gtk_container_add (GTK_CONTAINER (item), priv->addr_entry);
	g_signal_connect (G_OBJECT (priv->addr_entry),
			  "activate",
			  G_CALLBACK (activate_addr_entry_cb),
			  (gpointer) ui);
	gtk_toolbar_insert (GTK_TOOLBAR (toolbar), item, -1);

	item = gtk_tool_button_new_from_stock (GTK_STOCK_OK);
	g_signal_connect (G_OBJECT (item),
			  "clicked",
			  G_CALLBACK (activate_addr_entry_cb),
			  (gpointer) ui);
	gtk_toolbar_insert (GTK_TOOLBAR (toolbar), item, -1);

	gtk_box_pack_start (GTK_BOX (vbox1), hbox, TRUE, TRUE, 0);
	gtk_box_pack_start (GTK_BOX (vbox1), toolbar, FALSE, FALSE, 0);

	/* main window */
	priv->main_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	gtk_window_set_default_size (GTK_WINDOW (priv->main_window), 1024, 768);
	gtk_widget_set_name (priv->main_window, _("Gourmap"));
	g_signal_connect (G_OBJECT (priv->main_window),
			  "destroy",
			  G_CALLBACK (destroy_cb),
			  NULL);

	gtk_container_add (GTK_CONTAINER (priv->main_window), vbox1);
}