PageDisplay

PageDisplay is a user interface component designed to render and navigate through pages within a document or other paginated content. It is a common element in PDF readers, e-book apps, web document viewers, and content management systems that present pages one by one or in a continuous sequence.

A PageDisplay typically separates rendering from navigation. It may show a single page or a sequence of pages, and supports zoom and rotation, multiple layout modes (fit to width, fit to page), and responsive scaling. It exposes properties such as pageIndex, totalPages, and scale, and responds to actions like next, previous, and jump-to-page.

Rendering and performance: PageDisplay relies on a rendering backend to convert source pages into displayable content. It may render on demand, cache recent pages, and virtualize large documents to conserve memory. It often includes accessibility features, keyboard navigation, and support for high-DPI displays.

Implementation and variants: It can be implemented as a standalone widget or as part of a framework (for example, a React component or a native UI control). Some implementations offer thumbnails, search highlights, annotations, or synchronized page views in multi-pane interfaces.

See also: Document viewer, Pagination, PDF rendering, E-book reader, Virtualization (computer science).