readingAreaRange

The locator range that describes the Reading Area as closely as possible.

The Reading Area is a subset of the visible content that the renderer uses as the reference point for reading position calculations.

Key behaviors:

• After any navigation or scrolling that moves the old reading position out of visible range, the new reading position will align with the top of the Reading Area.

• For scrolling renderers, the Reading Area typically is a portion of the visible viewport. You can configure the Reading Area using the scroll renderer options readingAreaOffsetTop and readingAreaOffsetBottom.

• For non-scrolling (paginated) renderers, the Reading Area always equals the entire visible range.

Sync Media integration: If a SyncMediaPlayer is attached with managed synchronization enabled, scroll renderers will try to scroll the contents to keep the active reading position within the Reading Area range. Paginated renderers will automatically navigate to keep the reading position inside the Reading Area range.

Use addOnReadingAreaRangeChangedListener to add a listener that will be called when this value changes.