private double GetDropPositionFeedbackOffset(GridViewRow row, DropPosition dropPosition)
{
var yOffset = row.TransformToVisual(this.dropPositionFeedbackPresenterHost).Transform(new Point(0, 0)).Y;
if (dropPosition == DropPosition.After)
{
yOffset += row.ActualHeight;
}
yOffset -= (this.dropPositionFeedbackPresenter.ActualHeight / 2.0);
return(yOffset);
}
public virtual DropPosition GetDropPositionFromPoint(Point absoluteMousePosition, GridViewRow row)
{
if (row != null)
{
var headerTopPoint = row.TransformToVisual(Application.Current.RootVisual).Transform(new Point());
double mouseTop = absoluteMousePosition.Y - headerTopPoint.Y;
if (mouseTop <= (row.ActualHeight * 2 / 4))
{
return(DropPosition.Before);
}
else if (mouseTop > (row.ActualHeight * 2 / 4))
{
return(DropPosition.After);
}
}
return(DropPosition.Inside);
}