overExtent property

double get overExtent

Keep the extent of the Scrollable out of bounds.

Implementation

double get overExtent {
  // If the direction is different do not change.
  if (!_isSupportAxis) {
    return 0;
  }
  // State that doesn't change.
  if (_task == null ||
      (!_canProcess && !noMoreLocked) ||
      (noMoreLocked && infiniteOffset == null)) {
    return 0;
  }
  // State that triggers the task.
  if (infiniteOffset != null ||
      _mode == IndicatorMode.ready ||
      modeLocked ||
      noMoreLocked) {
    return actualTriggerOffset;
  }
  // State that triggers the secondary.
  if (_mode == IndicatorMode.secondaryArmed && userOffsetNotifier.value) {
    return offset;
  }
  if (_mode == IndicatorMode.secondaryReady ||
      _mode == IndicatorMode.secondaryOpen) {
    return secondaryDimension;
  }
  return 0;
}