public DragEventArgs(InputDeltaArgs args)
{
if (args != null)
{
CumulativeDistance = args.CumulativeTranslation;
DeltaDistance = args.DeltaTranslation;
}
}
protected void NotifyMove(InputDeltaArgs args)
{
if (Math.Abs(args.CumulativeTranslation.X) > DeadZoneInPixels.Width || Math.Abs(args.CumulativeTranslation.Y) > DeadZoneInPixels.Height)
{
if (!_dragging)
{
ReleaseMouseCaptureAtGestureOrigin();
}
_dragging = true;
if (_dragLock == DragLock.Unset)
{
double angle = GestureHelper.AngleFromVector(args.CumulativeTranslation.X, args.CumulativeTranslation.Y) % 180;
_dragLock = angle <= 45 || angle >= 135 ? DragLock.Horizontal : DragLock.Vertical;
}
}
if (_dragging)
{
RaiseDragEvents(args);
}
}
private void RaiseDragEvents(InputDeltaArgs args)
{
DragEventArgs e = new DragEventArgs(args);
if (args.DeltaTranslation.X != 0 && _dragLock == DragLock.Horizontal)
{
RaiseHorizontalDrag(e);
}
else if (args.DeltaTranslation.Y != 0 && _dragLock == DragLock.Vertical)
{
RaiseVerticalDrag(e);
}
}
