FairyGUI.ScrollPane.syncScrollBar C# (CSharp) Method

        private void syncScrollBar(bool end = false)
        {
            if (end) //滚动结束
            {
                if (_vtScrollBar != null)
                {
                    if (_scrollBarDisplayAuto)
                        ShowScrollBar(false);
                }
                if (_hzScrollBar != null)
                {
                    if (_scrollBarDisplayAuto)
                        ShowScrollBar(false);
                }

                UpdateClipSoft();
            }
            else
            {
                //这里不能直接使用_xPerc或者_yPerc，因为滚动可能处于过渡状态
                if (_vtScrollBar != null)
                {
                    _vtScrollBar.scrollPerc = _yOverlap == 0 ? 0 : Mathf.Clamp(-_container.y, 0, _yOverlap) / _yOverlap;
                    if (_scrollBarDisplayAuto)
                        ShowScrollBar(true);
                }
                if (_hzScrollBar != null)
                {
                    _hzScrollBar.scrollPerc = _xOverlap == 0 ? 0 : Mathf.Clamp(-_container.x, 0, _xOverlap) / _xOverlap;
                    if (_scrollBarDisplayAuto)
                        ShowScrollBar(true);
                }

                UpdateClipSoft();
            }
        }