public void TransformToVisual_Should_Work()
{
var child = new Decorator {
Width = 100, Height = 100
};
var root = new TestRoot()
{
Child = child, Width = 400, Height = 400
};
root.Measure(Size.Infinity);
root.Arrange(new Rect(new Point(), root.DesiredSize));
var tr = child.TransformToVisual(root);
Assert.NotNull(tr);
var point = root.Bounds.TopLeft * tr;
//child is centered (400 - 100)/2
Assert.Equal(new Point(150, 150), point);
}
public void TransformToVisual_With_NonInvertible_RenderTransform_Should_Work()
{
var child = new Decorator
{
Width = 100,
Height = 100,
RenderTransform = new ScaleTransform()
{
ScaleX = 0, ScaleY = 0
}
};
var root = new TestRoot()
{
Child = child, Width = 400, Height = 400
};
root.Measure(Size.Infinity);
root.Arrange(new Rect(new Point(), root.DesiredSize));
var tr = root.TransformToVisual(child);
Assert.Null(tr);
}