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

        protected override bool DrawChild(Canvas canvas, View child, long drawingTime)
        {
            var lp = (LayoutParams) child.LayoutParameters;
            var save = canvas.Save(SaveFlags.Clip);

            var drawScrim = false;

            if (_canSlide && !lp.Slideable && _slideableView != null)
            {
                if (!OverlayContent)
                {
                    canvas.GetClipBounds(_tmpRect);
                    if (_isSlidingUp)
                        _tmpRect.Bottom = Math.Min(_tmpRect.Bottom, _slideableView.Top);
                    else
                        _tmpRect.Top = Math.Max(_tmpRect.Top, _slideableView.Bottom);

                    canvas.ClipRect(_tmpRect);
                }

                if (_slideOffset < 1)
                    drawScrim = true;
            }

            var result = base.DrawChild(canvas, child, drawingTime);
            canvas.RestoreToCount(save);

            if (drawScrim)
            {
                var baseAlpha = (_coveredFadeColor.ToArgb() & 0xff000000) >> 24;
                var imag = (int) (baseAlpha * (1 - _slideOffset));
                var color = imag << 24 | (_coveredFadeColor.ToArgb() & 0xffffff);
                _coveredFadePaint.Color = new Color(color);
                canvas.DrawRect(_tmpRect, _coveredFadePaint);
            }

            return result;
        }