/// <summary>
/// Updates <see cref="AbsoluteSize" /> and <see cref="AbsolutePosition" />.
/// </summary>
public virtual void Measure()
{
var parentGui = Parent as GuiBase2D;
var parentSize = parentGui?.AbsoluteSize ?? (parentGui?.AbsoluteSize ?? new Vector2());
var parentPosition = parentGui?.AbsolutePosition ?? new Vector2();
AbsoluteSize = Size.toAbsolute(parentSize).round();
var position = Position;
var xScaleOffset = 0.0f;
var yScaleOffset = 0.0f;
var xAbsoluteOffset = 0;
var yAbsoluteOffset = 0;
var xMult = 1;
var yMult = 1;
if (_alignmentX == AlignmentX.Right)
{
xScaleOffset = 1;
xAbsoluteOffset = (int)-AbsoluteSize.X;
xMult = -1;
}
else if (_alignmentX == AlignmentX.Center)
{
xScaleOffset = 0.5f;
xAbsoluteOffset = (int)-AbsoluteSize.X / 2;
}
if (_alignmentY == AlignmentY.Bottom)
{
yScaleOffset = 1;
yAbsoluteOffset = (int)-AbsoluteSize.Y;
yMult = -1;
}
else if (_alignmentY == AlignmentY.Middle)
{
yScaleOffset = 0.5f;
yAbsoluteOffset = (int)-AbsoluteSize.Y / 2;
}
position = new UDim2(xScaleOffset + position.Scale.X * xMult, xAbsoluteOffset + position.Absolute.X * xMult,
yScaleOffset + position.Scale.Y * xMult, yAbsoluteOffset + position.Absolute.Y * yMult);
AbsolutePosition = (parentPosition + position.toAbsolute(parentSize)).round();
Measured?.Fire();
Arrange();
foreach (var kv in Children)
{
var el = kv as GuiElement;
el?.Measure();
}
}