/// <summary>
/// Subtracts a <see cref="Terminal.Gui.Pos"/> from a <see cref="Terminal.Gui.Pos"/>, yielding a new <see cref="T:Terminal.Gui.Pos"/>.
/// </summary>
/// <param name="left">The <see cref="Terminal.Gui.Pos"/> to subtract from (the minuend).</param>
/// <param name="right">The <see cref="Terminal.Gui.Pos"/> to subtract (the subtrahend).</param>
/// <returns>The <see cref="T:Terminal.Gui.Pos"/> that is the <c>left</c> minus <c>right</c>.</returns>
public static Pos operator -(Pos left, Pos right)
{
PosCombine newPos = new PosCombine(false, left, right);
if (posCombine?.ToString() != newPos.ToString())
{
((PosView)left).Target.SetNeedsLayout();
}
return(posCombine = newPos);
}
static void SetPosCombine(Pos left, PosCombine newPos)
{
if (posCombine?.ToString() != newPos.ToString())
{
var view = left as PosView;
if (view != null)
{
view.Target.SetNeedsLayout();
}
}
}
/// <summary>
/// Subtracts a <see cref="Terminal.Gui.Pos"/> from a <see cref="Terminal.Gui.Pos"/>, yielding a new <see cref="Pos"/>.
/// </summary>
/// <param name="left">The <see cref="Terminal.Gui.Pos"/> to subtract from (the minuend).</param>
/// <param name="right">The <see cref="Terminal.Gui.Pos"/> to subtract (the subtrahend).</param>
/// <returns>The <see cref="Pos"/> that is the <c>left</c> minus <c>right</c>.</returns>
public static Pos operator -(Pos left, Pos right)
{
if (left is PosAbsolute && right is PosAbsolute)
{
posCombine = null;
return(new PosAbsolute(left.Anchor(0) - right.Anchor(0)));
}
PosCombine newPos = new PosCombine(false, left, right);
SetPosCombine(left, newPos);
return(posCombine = newPos);
}
/// <summary>
/// Subtracts a <see cref="Terminal.Gui.Pos"/> from a <see cref="Terminal.Gui.Pos"/>, yielding a new <see cref="Pos"/>.
/// </summary>
/// <param name="left">The <see cref="Terminal.Gui.Pos"/> to subtract from (the minuend).</param>
/// <param name="right">The <see cref="Terminal.Gui.Pos"/> to subtract (the subtrahend).</param>
/// <returns>The <see cref="Pos"/> that is the <c>left</c> minus <c>right</c>.</returns>
public static Pos operator -(Pos left, Pos right)
{
PosCombine newPos = new PosCombine(false, left, right);
if (posCombine?.ToString() != newPos.ToString())
{
var view = left as PosView;
if (view != null)
{
view.Target.SetNeedsLayout();
}
}
return(posCombine = newPos);
}
