| PdfThumbnailBarController | Thumbnail bar controller used to control properties and actions of scrollable and static thumbnail bar. |
| ThumbnailAdapter.OnThumbnailClickListener | Listener for receiving page changes caused by the user touching the ThumbnailAdapter. |
| PdfScrollableThumbnailBar | Scrollable bar showing thumbnails of pages, with larger images. |
| PdfStaticThumbnailBar | Bar showing thumbnails of pages for quick selection. |
| ScrollableThumbnailBarLayoutManager | Layout manager for scrollable thumbnail bar. |
| ThumbnailAdapter | Recycler adapter for creating thumbnail views inside the PdfScrollableThumbnailBar. |