didUpdateWidget method

Implementation

void didUpdateWidget() {
  double scale = _mScale;
  double scrollX = _mScrollX;
  double scaleOffsetX = _mScaleOffsetX;
  setScrollX(scrollX);
  _setScale(scale);
  _setScaleOffsetX(scaleOffsetX);
  if (scrollX != _mScrollX ||
      scaleOffsetX != _mScaleOffsetX ||
      scale != _mScale) {
    notifyChanged();
  }
}