C++ G_THEMED_ICON函数代码示例

GdkPixbuf *
_g_icon_get_pixbuf (GIcon        *icon,
		    int           size,
		    GtkIconTheme *theme)
{
	GdkPixbuf *pixbuf;
	int        w, h;

	if (icon == NULL)
		return NULL;

	pixbuf = NULL;
	if (G_IS_THEMED_ICON (icon))
		pixbuf = get_themed_icon_pixbuf (G_THEMED_ICON (icon), size, theme);
	if (G_IS_FILE_ICON (icon))
		pixbuf = get_file_icon_pixbuf (G_FILE_ICON (icon), size);

	if (pixbuf == NULL)
		return NULL;

	w = gdk_pixbuf_get_width (pixbuf);
	h = gdk_pixbuf_get_height (pixbuf);
	if (scale_keeping_ratio (&w, &h, size, size, FALSE)) {
		GdkPixbuf *scaled;

		scaled = gdk_pixbuf_scale_simple (pixbuf, w, h, GDK_INTERP_BILINEAR);
		g_object_unref (pixbuf);
		pixbuf = scaled;
	}

	return pixbuf;
}

static gboolean
ignore_drive (GDrive *drive)
{
  GIcon *icon;

  if (g_drive_can_eject (drive) == FALSE ||
      g_drive_has_media (drive) == FALSE) {
    GRL_DEBUG ("%s: Not adding %s as cannot eject or has no media", __FUNCTION__,
               g_drive_get_name (drive));
    return TRUE;
  }

  /* Hack to avoid USB devices showing up
   * https://bugzilla.gnome.org/show_bug.cgi?id=679624 */
  icon = g_drive_get_icon (drive);
  if (icon && G_IS_THEMED_ICON (icon)) {
    const gchar * const * names;
    names = g_themed_icon_get_names (G_THEMED_ICON (icon));
    if (names && names[0] && !g_str_has_prefix (names[0], "drive-optical")) {
      g_object_unref (icon);
      GRL_DEBUG ("%s: Not adding drive %s as is not optical drive", __FUNCTION__,
                 g_drive_get_name (drive));
      return TRUE;
    }
  }
  g_clear_object (&icon);

  return FALSE;
}

GdkPixbuf *
get_file_pixbuf (GSearchWindow * gsearch,
                 GFileInfo * file_info)
{
	GdkPixbuf * pixbuf;
	GIcon * icon = NULL;
	const gchar * thumbnail_path = NULL;

	if (file_info == NULL) {
		return NULL;
	}

	icon = g_file_info_get_icon (file_info);

	if (gsearch->show_thumbnails == TRUE) {
		thumbnail_path = g_file_info_get_attribute_byte_string (file_info, G_FILE_ATTRIBUTE_THUMBNAIL_PATH);
	}

	if (thumbnail_path != NULL) {
		pixbuf = gsearchtool_get_thumbnail_image (thumbnail_path);
	}
	else {
		gchar * icon_string;

		icon_string = g_icon_to_string (icon);		
		pixbuf = (GdkPixbuf *) g_hash_table_lookup (gsearch->search_results_filename_hash_table, icon_string);

		if (pixbuf == NULL) {
			pixbuf = get_themed_icon_pixbuf (G_THEMED_ICON (icon), ICON_SIZE, gtk_icon_theme_get_default ());
			g_hash_table_insert (gsearch->search_results_filename_hash_table, g_strdup (icon_string), pixbuf);
		}
		g_free (icon_string);
	}
	return pixbuf;
}

GdkPixbuf* getPixBuf(char* name)
{
	GFile*				file=g_file_new_for_path(name);
	GFileInfo*			file_info=g_file_query_info(file,"standard::*",G_FILE_QUERY_INFO_NONE,NULL,NULL);
	GIcon*				icon=g_file_info_get_icon(file_info);
	GdkPixbuf*			pix=NULL;
	gchar*				path;
	gchar const* const*	names;
	GFile*				icon_file;
	char*				newname;

	if(G_IS_THEMED_ICON(icon))
		{
			names=g_themed_icon_get_names(G_THEMED_ICON(icon));
			pix=gtk_icon_theme_load_icon(gtk_icon_theme_get_default(),*names,16,(GtkIconLookupFlags)(GTK_ICON_LOOKUP_USE_BUILTIN|GTK_ICON_LOOKUP_FORCE_SVG|GTK_ICON_LOOKUP_GENERIC_FALLBACK|GTK_ICON_LOOKUP_FORCE_SIZE),NULL);
			if(pix==NULL)
				{
					asprintf(&newname,"gnome-mime-%s",*names);
					pix=gtk_icon_theme_load_icon(gtk_icon_theme_get_default(),(const gchar*)newname,16,(GtkIconLookupFlags)(GTK_ICON_LOOKUP_USE_BUILTIN|GTK_ICON_LOOKUP_FORCE_SVG|GTK_ICON_LOOKUP_GENERIC_FALLBACK|GTK_ICON_LOOKUP_FORCE_SIZE),NULL);
					debugFree(&newname);
				}
		}
	else if(G_IS_FILE_ICON(icon))
		{
			icon_file=g_file_icon_get_file(G_FILE_ICON(icon));
			path=g_file_get_path(icon_file);
			pix=gdk_pixbuf_new_from_file_at_size(path,16,16,NULL);
			debugFree(&path);
			g_object_unref(G_OBJECT(icon_file));
		}
	g_object_unref(G_OBJECT(file));
	g_object_unref(G_OBJECT(file_info));

   return(pix);
}

static char *
gicon_to_string (GIcon *icon)
{
  GFile *file;
  const char *const *names;

  if (G_IS_FILE_ICON (icon))
    {
      file = g_file_icon_get_file (G_FILE_ICON (icon));
      if (file)
	return g_file_get_path (file);
    }
  else if (G_IS_THEMED_ICON (icon))
    {
      names = g_themed_icon_get_names (G_THEMED_ICON (icon));
      if (names)
	return g_strdup (names[0]);
    }
  else if (G_IS_EMBLEMED_ICON (icon))
    {
      GIcon *base;

      base = g_emblemed_icon_get_icon (G_EMBLEMED_ICON (icon));

      return gicon_to_string (base);
    }

  return NULL;
}

static GdkPixbuf*
get_icon_pixbuf_for_content_type (const char *ctype, size_t size)
{
	GIcon *icon;
	GdkPixbuf *pixbuf;
	
	icon = g_content_type_get_icon (ctype);
	pixbuf = NULL;
		
	/* based on a snippet from http://www.gtkforums.com/about4721.html */
	if (G_IS_THEMED_ICON(icon)) {
		gchar const * const *names;
		names = g_themed_icon_get_names (G_THEMED_ICON(icon));
		pixbuf = gtk_icon_theme_load_icon (gtk_icon_theme_get_default(),
						   *names, size, 0, NULL);
	} else if (G_IS_FILE_ICON(icon)) {
		GFile *icon_file;
		gchar *path;	
		icon_file = g_file_icon_get_file (G_FILE_ICON(icon));
		path = g_file_get_path (icon_file);
		pixbuf = gdk_pixbuf_new_from_file_at_size (path, size, size, NULL);
		g_free (path);
		g_object_unref(icon_file);
	}
	g_object_unref(icon);
	
	return pixbuf;
}

const gchar *
_gtk_icon_helper_get_icon_name (GtkIconHelper *self)
{
  if (self->priv->storage_type != GTK_IMAGE_ICON_NAME)
    return NULL;

  return g_themed_icon_get_names (G_THEMED_ICON (self->priv->gicon))[0];
}

static GList *
mx_icon_theme_get_icons (MxIconTheme *theme,
                         const gchar *icon_name)
{
  gint i;
  GIcon *icon;
  GList *data;

  const gchar * const *names = NULL;
  MxIconThemePrivate *priv = theme->priv;

  /* Load the icon, or a fallback */
  icon = g_themed_icon_new_with_default_fallbacks (icon_name);
  names = g_themed_icon_get_names (G_THEMED_ICON (icon));
  if (!names)
    {
      g_object_unref (icon);
      return NULL;
    }

  data = NULL;
  for (i = 0; names[i]; i++)
    {
      /* See if we've loaded this before */
      GIcon *single_icon = g_themed_icon_new (names[i]);
      gboolean success = g_hash_table_lookup_extended (priv->icon_hash,
                                                       single_icon,
                                                       NULL,
                                                       (gpointer *)&data);

      g_object_unref (single_icon);

      /* Found in cache on first hit, break */
      if (success && (i == 0))
        break;

      /* Found in cache after searching the disk, store again as a new icon */
      if (success)
        {
          /* If we found this as a fallback, store it so we don't look on
           * disk again.
           */
          if (data)
            data = mx_icon_theme_copy_data_list (data);
          g_hash_table_insert (priv->icon_hash, g_object_ref (icon), data);

          break;
        }

      /* Try to load from disk */
      if ((data = mx_icon_theme_load_icon (theme, names[i], icon)))
        break;
    }

  g_object_unref (icon);

  return data;
}

static void
list_drives (GList *drives,
	     int indent)
{
  GList *volumes, *l;
  int c, i;
  GDrive *drive;
  char *name;
  char **ids;
  GIcon *icon;
  
  for (c = 0, l = drives; l != NULL; l = l->next, c++)
    {
      drive = (GDrive *) l->data;
      name = g_drive_get_name (drive);
      
      g_print ("%*sDrive(%d): %s\n", indent, "", c, name);
      g_free (name);
      
      if (mount_list_info)
	{
	  ids = g_drive_enumerate_identifiers (drive);
	  if (ids && ids[0] != NULL)
	    {
	      g_print ("%*sids:\n", indent+2, "");
	      for (i = 0; ids[i] != NULL; i++)
		{
		  char *id = g_drive_get_identifier (drive,
						     ids[i]);
		  g_print ("%*s %s: '%s'\n", indent+2, "", ids[i], id);
		  g_free (id);
		}
	    }
	  g_strfreev (ids);

          icon = g_drive_get_icon (drive);
          if (icon)
          {
                  if (G_IS_THEMED_ICON (icon))
                          show_themed_icon_names (G_THEMED_ICON (icon), indent + 2);
                  g_object_unref (icon);
          }

	  g_print ("%*sis_media_removable=%d\n", indent + 2, "", g_drive_is_media_removable (drive));
	  g_print ("%*shas_media=%d\n", indent + 2, "", g_drive_has_media (drive));
	  g_print ("%*sis_media_check_automatic=%d\n", indent + 2, "", g_drive_is_media_check_automatic (drive));
	  g_print ("%*scan_poll_for_media=%d\n", indent + 2, "", g_drive_can_poll_for_media (drive));
	  g_print ("%*scan_eject=%d\n", indent + 2, "", g_drive_can_eject (drive));
	}
      
      volumes = g_drive_get_volumes (drive);
      list_volumes (volumes, indent + 2, FALSE);
      g_list_foreach (volumes, (GFunc)g_object_unref, NULL);
      g_list_free (volumes);
    }
}

const gchar *
st_icon_get_icon_name (StIcon *icon)
{
  StIconPrivate *priv;

  g_return_val_if_fail (ST_IS_ICON (icon), NULL);

  priv = icon->priv;

  if (priv->gicon && G_IS_THEMED_ICON (priv->gicon))
    return g_themed_icon_get_names (G_THEMED_ICON (priv->gicon)) [0];
  else
    return NULL;
}

static void
set_icon(GtkWindow *window, const gchar *uri)
{
    GFile *file;
    GIcon *icon;
    GFileInfo *info;
    GdkScreen *screen;
    GtkIconTheme *icon_theme;
    const gchar *icon_name = NULL, *content_type;

    screen = gtk_widget_get_screen (GTK_WIDGET (window));
    icon_theme = gtk_icon_theme_get_for_screen (screen);

    file = g_file_new_for_uri (uri);

    info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
                              G_FILE_QUERY_INFO_NONE, NULL, NULL);
    g_object_unref (file);

    if (! info)
	return;

    content_type = g_file_info_get_content_type (info);
    icon = g_content_type_get_icon (content_type);

    if (G_IS_THEMED_ICON (icon)) {
       const gchar * const *names = NULL;

       names = g_themed_icon_get_names (G_THEMED_ICON (icon));
       if (names) {
          gint i;
          for (i = 0; names[i]; i++) {
	      if (gtk_icon_theme_has_icon (icon_theme, names[i])) {
		  icon_name = names[i];
		  break;
	      }
          }
       }
    }

    if (icon_name) {
        gtk_window_set_icon_name (window, icon_name);
    }

    g_object_unref (icon);
}

static GdkPixbuf *
render_icon (GIcon *icon, gint icon_size)
{
	GdkPixbuf *pixbuf;
	GtkIconInfo *info;

	pixbuf = NULL;

	if (G_IS_THEMED_ICON (icon)) {
		gchar const * const *names;

		info = gtk_icon_theme_lookup_by_gicon (gtk_icon_theme_get_default (),
				                       icon,
				                       icon_size,
				                       0);

		if (info) {
			pixbuf = gtk_icon_info_load_icon (info, NULL);
		        gtk_icon_info_free (info);
		}

		if (pixbuf == NULL) {
			names = g_themed_icon_get_names (G_THEMED_ICON (icon));
			pixbuf = gtk_icon_theme_load_icon (gtk_icon_theme_get_default (),
							   *names,
							   icon_size,
							   0, NULL);
		}
	}
	else
	if (G_IS_FILE_ICON (icon)) {
		GFile *icon_file;
		gchar *path;

		icon_file = g_file_icon_get_file (G_FILE_ICON (icon));
		path = g_file_get_path (icon_file);
		pixbuf = gdk_pixbuf_new_from_file_at_size (path,
							   icon_size, icon_size, 
							   NULL);
		g_free (path);
		g_object_unref (G_OBJECT (icon_file));
	}

	return pixbuf;
}

char *
panel_util_get_icon_name_from_g_icon (GIcon *gicon)
{
	const char * const *names;
	GtkIconTheme *icon_theme;
	int i;

	if (!G_IS_THEMED_ICON (gicon))
		return NULL;

	names = g_themed_icon_get_names (G_THEMED_ICON (gicon));
	icon_theme = gtk_icon_theme_get_default ();

	for (i = 0; names[i] != NULL; i++) {
		if (gtk_icon_theme_has_icon (icon_theme, names[i]))
			return g_strdup (names[i]);
	}

	return NULL;
}

gboolean
_gtk_icon_helper_set_use_fallback (GtkIconHelper *self,
                                   gboolean       use_fallback)
{
  if (self->priv->use_fallback != use_fallback)
    {
      self->priv->use_fallback = use_fallback;
      _gtk_icon_helper_invalidate (self);
      if (self->priv->storage_type == GTK_IMAGE_ICON_NAME)
        {
          GIcon *old_icon = self->priv->gicon;
          const char *icon_name = g_themed_icon_get_names (G_THEMED_ICON (self->priv->gicon))[0];
          if (self->priv->use_fallback)
            self->priv->gicon = g_themed_icon_new_with_default_fallbacks (icon_name);
          else
            self->priv->gicon = g_themed_icon_new (icon_name);
          g_object_unref (old_icon);
        }
      return TRUE;
    }
  return FALSE;
}

static GList *
add_drive (GList *media_list,
           GDrive *drive,
           GrlOpticalMediaSource *source)
{
  GList *volumes, *i;
  GIcon *icon;

  if (g_drive_can_eject (drive) == FALSE ||
      g_drive_has_media (drive) == FALSE) {
    return media_list;
  }

  /* Hack to avoid USB devices showing up
   * https://bugzilla.gnome.org/show_bug.cgi?id=679624 */
  icon = g_drive_get_icon (drive);
  if (icon && G_IS_THEMED_ICON (icon)) {
    const gchar * const * names;
    names = g_themed_icon_get_names (G_THEMED_ICON (icon));
    if (names && names[0] && !g_str_has_prefix (names[0], "drive-optical")) {
      g_object_unref (icon);
      return media_list;
    }
  }
  g_clear_object (&icon);

  /* Repeat for all the drive's volumes */
  volumes = g_drive_get_volumes (drive);

  for (i = volumes; i != NULL; i = i->next) {
    GVolume *volume = i->data;
    media_list = add_volume (media_list, volume, drive, source);
    g_object_unref (volume);
  }

  g_list_free (volumes);

  return media_list;
}