public void SetAmountOfItems(int amount)
{
_topIndex = 0;
_amountOfItems = amount;
if (!_isSlider)
{
_scrollButtonLength = (int)(((float)_amountVisible / _amountOfItems) * _scrollBarLength);
if (_scrollButtonLength < 16)
{
_scrollButtonLength = 16;
}
if (_isHorizontal)
{
_scroll.ResizeButton(_scrollButtonLength, 16);
}
else
{
_scroll.ResizeButton(16, _scrollButtonLength);
}
}
SetScrollButtonPosition();
}