public void ShouldArrangeHorizontally()
{
var canvas = GetCanvas();
var arranger = new StackArranger(canvas.Children, Orientation.Horizontal);
var size = new Size(800, 200);
List<ElementBounds> layout;
arranger.Measure(size);
arranger.ArrangeCalculate(size, out layout);
layout[0].Bounds.Left.ShouldBe(0.0);
layout[1].Bounds.Left.ShouldBe(100.0);
layout[2].Bounds.Left.ShouldBe(200.0);
foreach (FrameworkElement child in canvas.Children)
{
child.Margin = new Thickness(5);
}
arranger.Measure(size);
arranger.ArrangeCalculate(size, out layout);
layout[0].Bounds.Left.ShouldBe(0.0);
layout[1].Bounds.Left.ShouldBe(110.0);
layout[2].Bounds.Left.ShouldBe(220.0);
}
public DraggableStackPanel()
{
// Setup initial conditions.
arranger=new StackArranger(
Children,
Orientation,
null,
ArrangeChild);
// Wire up events.
// SizeChanged += delegate { ArrangeChildren(); };
LayoutUpdated += delegate { ArrangeChildren(); };
Loaded += HandleLoaded;
}
public void ShouldStretchToFit()
{
var canvas = GetCanvas();
var arranger = new StackArranger(canvas.Children, Orientation.Vertical);
var size = new Size(200, 800);
List<ElementBounds> layout;
arranger.Measure(size);
arranger.ArrangeCalculate(size, out layout);
// Not stretching.
layout[0].Bounds.Width.ShouldBe(100.0);
layout[1].Bounds.Width.ShouldBe(100.0);
layout[2].Bounds.Width.ShouldBe(100.0);
foreach (FrameworkElement child in canvas.Children)
{
child.Width = double.NaN;
}
arranger.Measure(size);
arranger.ArrangeCalculate(size, out layout);
layout[0].Bounds.Width.ShouldBe(200.0);
layout[1].Bounds.Width.ShouldBe(200.0);
layout[2].Bounds.Width.ShouldBe(200.0);
// Horizontal
arranger.Orientation = Orientation.Horizontal;
size = new Size(800, 200);
arranger.Measure(size);
arranger.ArrangeCalculate(size, out layout);
layout[0].Bounds.Height.ShouldBe(100.0);
layout[1].Bounds.Height.ShouldBe(100.0);
layout[2].Bounds.Height.ShouldBe(100.0);
foreach (FrameworkElement child in canvas.Children)
{
child.Height = double.NaN;
}
arranger.Measure(size);
arranger.ArrangeCalculate(size, out layout);
layout[0].Bounds.Height.ShouldBe(200.0);
layout[1].Bounds.Height.ShouldBe(200.0);
layout[2].Bounds.Height.ShouldBe(200.0);
}