protected override void MousePressEvent(QMouseEvent e)
{
if (e.Button() != Qt.MouseButton.LeftButton)
return;
if (BarrelHit(e.Pos()))
barrelPressed = true;
}
protected override void MouseMoveEvent(QMouseEvent e)
{
if (!barrelPressed)
return;
QPoint pos = e.Pos();
if (pos.X() <= 0)
pos.SetX(1);
if (pos.Y() >= Height())
pos.SetY(Height() - 1);
double rad = Math.Atan(((double)Rect.Bottom() - pos.Y()) / pos.X());
SetAngle((int) Math.Round(rad * 180 / 3.14159265));
}
