KiteScrollPosition

A continuous viewport anchor that a host can persist between reading sessions. location names the leading visible page, and offsetPx counts unzoomed layout pixels scrolled beyond that page's leading edge along the scroll axis. It works for vertical and horizontal continuous layouts, including right-to-left layout direction. It does not save zoom or cross-axis pan.

Restore with KiteDocViewState.scrollTo or rememberKiteDocViewState under the same viewport, density and page layout for an exact visual match. When an EPUB reflows, use KiteDocViewState.currentBookmark for a content anchor; a page-and-pixel position cannot remain exact after repagination.