public void UpdateHeight(ScrollBar bar, Contents contents)
{
//var scrollTrackSpace = self.contentHeight - self.viewportHeight; // (600 - 200) = 400
//var scrollThumbSpace = self.viewportHeight - self.thumbHeight; // (200 - 50) = 150
//var scrollJump = scrollTrackSpace / scrollThumbSpace; // (400 / 150 ) = 2.666666666666667
float viewportHeight = bar.Height;
float contentHeight = contents.CalcTotalHeight();
float pct = viewportHeight / contentHeight;
// Bar height == panel height - drag bounds
if (pct < (float)0.98)
{
var height = Math.Floor(bar.Height * pct);
if (height != _height)
{
_height = (int)height;
DragAreaOffset = new Rectangle(DragAreaOffset.X, DragAreaOffset.Y, Width, Height);
//TODO: Need to recalculate where we should be based on the new height
}
}
}