static void
brightness_contrast_to_levels_callback (GtkWidget        *widget,
                                        GimpImageMapTool *image_map_tool)
{
    GimpLevelsConfig *levels;

    levels = gimp_brightness_contrast_config_to_levels_config (GIMP_BRIGHTNESS_CONTRAST_CONFIG (image_map_tool->config));

    gimp_image_map_tool_edit_as (image_map_tool,
                                 "gimp-levels-tool",
                                 GIMP_CONFIG (levels));

    g_object_unref (levels);
}
static void
brightness_contrast_to_levels_callback (GtkWidget                  *widget,
                                        GimpBrightnessContrastTool *bc_tool)
{
  GimpLevelsConfig *levels;

  levels = gimp_brightness_contrast_config_to_levels_config (bc_tool->config);

  gimp_image_map_tool_edit_as (GIMP_IMAGE_MAP_TOOL (bc_tool),
                               "gimp-levels-tool",
                               GIMP_CONFIG (levels));

  g_object_unref (levels);
}