private void OnScrollTimerTick(object sender, EventArgs e)
{
var point = tree.PointToClient(Control.MousePosition);
var hitInfo = tree.CalcHitInfo(point);
var leftCoord = -1;
if (!CanScroll(hitInfo))
{
return;
}
if (IsRightScroll(hitInfo))
{
var nextColumn = GetNextColumn();
leftCoord = tree.ViewInfo.GetColumnLeftCoord(nextColumn);
}
else if (IsLeftScroll(hitInfo))
{
var prevColumn = GetPrevColumn();
leftCoord = tree.ViewInfo.GetColumnLeftCoord(prevColumn);
}
if (leftCoord == -1)
{
return;
}
leftCoord += tree.ViewInfo.ViewRects.IndicatorWidth;
if (tree.ViewInfo.HasFixedLeft)
{
leftCoord -= tree.ViewInfo.ViewRects.FixedLeft.Width;
leftCoord += tree.FixedLineWidth;
}
tree.LeftCoord = leftCoord;
}
