public void SpacingArrangementTwoItems(int spacing)
{
var stack = BuildStack(2, 100, 100);
stack.Spacing.Returns(spacing);
var manager = new HorizontalStackLayoutManager(stack);
var measuredSize = manager.Measure(double.PositiveInfinity, 100);
manager.Arrange(new Rectangle(Point.Zero, measuredSize));
var expectedRectangle0 = new Rectangle(0, 0, 100, 100);
stack.Children[0].Received().Arrange(Arg.Is(expectedRectangle0));
var expectedRectangle1 = new Rectangle(100 + spacing, 0, 100, 100);
stack.Children[1].Received().Arrange(Arg.Is(expectedRectangle1));
}
public void ArrangeAccountsForFill()
{
var stack = BuildStack(viewCount: 1, viewWidth: 100, viewHeight: 100);
stack.HorizontalLayoutAlignment.Returns(LayoutAlignment.Fill);
stack.VerticalLayoutAlignment.Returns(LayoutAlignment.Fill);
var layoutManager = new HorizontalStackLayoutManager(stack);
_ = layoutManager.Measure(double.PositiveInfinity, double.PositiveInfinity);
var arrangedWidth = 1000;
var arrangedHeight = 1000;
var target = new Rect(Point.Zero, new Size(arrangedWidth, arrangedHeight));
var actual = layoutManager.ArrangeChildren(target);
// Since we're arranging in a space larger than needed and the layout is set to Fill in both directions,
// we expect the returned actual arrangement size to be as large as the target space
Assert.Equal(arrangedWidth, actual.Width);
Assert.Equal(arrangedHeight, actual.Height);
}
public void RtlShouldStartAtRightEdge()
{
var stack = BuildStack(viewCount: 2, viewWidth: 100, viewHeight: 100);
stack.FlowDirection.Returns(FlowDirection.RightToLeft);
stack.HorizontalLayoutAlignment.Returns(LayoutAlignment.Fill);
stack.Spacing.Returns(0);
var manager = new HorizontalStackLayoutManager(stack);
var measuredSize = manager.Measure(double.PositiveInfinity, 100);
// Arranging in a larger space than measured to simulate a Fill situation
var rightEdge = measuredSize.Width * 2;
manager.ArrangeChildren(new Rect(0, 0, rightEdge, measuredSize.Height));
// We expect that the starting view (0) should be arranged on the right,
// and the next rectangle (1) should be on the left
var expectedRectangle0 = new Rect(rightEdge - 100, 0, 100, 100);
var expectedRectangle1 = new Rect(rightEdge - 200, 0, 100, 100);
stack[0].Received().Arrange(Arg.Is(expectedRectangle0));
stack[1].Received().Arrange(Arg.Is(expectedRectangle1));
}