Function clampScrollTop

clampScrollTop(
    scrollTop: number,
    totalHeight: number,
    viewportHeight: number,
): number
Clamp scrollTop to valid range.
Parameters
- scrollTop: number
  Proposed scroll position
- totalHeight: number
  Total content height
- viewportHeight: number
  Visible viewport height
Returns number
Clamped scrollTop in range [0, max(0, totalHeight - viewportHeight)]
- Defined in core/src/widgets/virtualList.ts:317