Cheesebaron.SlidingUpPanel.SlidingUpPanelLayout.OnInterceptTouchEvent C# (CSharp) Method

        public override bool OnInterceptTouchEvent(MotionEvent ev)
        {
            var action = MotionEventCompat.GetActionMasked(ev);

            if (!_canSlide || !SlidingEnabled || (_isUnableToDrag && action != (int) MotionEventActions.Down))
            {
                _dragHelper.Cancel();
                return base.OnInterceptTouchEvent(ev);
            }

            if (action == (int) MotionEventActions.Cancel || action == (int) MotionEventActions.Up)
            {
                _dragHelper.Cancel();
                return false;
            }

            var x = ev.GetX();
            var y = ev.GetY();
            var interceptTap = false;

            switch (action)
            {
                case (int)MotionEventActions.Down:
                    _isUnableToDrag = false;
                    _initialMotionX = x;
                    _initialMotionY = y;
                    if (IsDragViewUnder((int) x, (int) y) && !IsUsingDragViewTouchEvents)
                        interceptTap = true;
                    break;
                case (int)MotionEventActions.Move:
                    var adx = Math.Abs(x - _initialMotionX);
                    var ady = Math.Abs(y - _initialMotionY);
                    var dragSlop = _dragHelper.TouchSlop;

                    if (IsUsingDragViewTouchEvents)
                    {
                        if (adx > _scrollTouchSlop && ady < _scrollTouchSlop)
                            return base.OnInterceptTouchEvent(ev);
                        if (ady > _scrollTouchSlop)
                            interceptTap = IsDragViewUnder((int) x, (int) y);
                    }

                    if ((ady > dragSlop && adx > ady) || !IsDragViewUnder((int) x, (int) y))
                    {
                        _dragHelper.Cancel();
                        _isUnableToDrag = true;
                        return false;
                    }
                    break;
            }

            var interceptForDrag = _dragHelper.ShouldInterceptTouchEvent(ev);

            return interceptForDrag || interceptTap;
        }