public void Lays_Out_Children_Vertically_With_Spacing()
{
var target = new NonVirtualizingStackLayout
{
Orientation = Orientation.Vertical,
Spacing = 10,
};
var context = CreateContext(new[]
{
new Border {
Height = 20, Width = 120
},
new Border {
Height = 30
},
new Border {
Height = 50
},
});
var desiredSize = target.Measure(context, Size.Infinity);
var arrangeSize = target.Arrange(context, desiredSize);
Assert.Equal(new Size(120, 120), desiredSize);
Assert.Equal(new Size(120, 120), arrangeSize);
Assert.Equal(new Rect(0, 0, 120, 20), context.Children[0].Bounds);
Assert.Equal(new Rect(0, 30, 120, 30), context.Children[1].Bounds);
Assert.Equal(new Rect(0, 70, 120, 50), context.Children[2].Bounds);
}
public void Only_Arrange_Visible_Children(Orientation orientation)
{
var hiddenPanel = new Panel {
Width = 10, Height = 10, IsVisible = false
};
var panel = new Panel {
Width = 10, Height = 10
};
var target = new NonVirtualizingStackLayout
{
Spacing = 40,
Orientation = orientation,
};
var context = CreateContext(new[]
{
hiddenPanel,
panel
});
var desiredSize = target.Measure(context, Size.Infinity);
var arrangeSize = target.Arrange(context, desiredSize);
Assert.Equal(new Size(10, 10), arrangeSize);
}
public void Lays_Out_Children_Horizontally()
{
var target = new NonVirtualizingStackLayout {
Orientation = Orientation.Horizontal
};
var context = CreateContext(new[]
{
new Border {
Width = 20, Height = 120
},
new Border {
Width = 30
},
new Border {
Width = 50
},
});
var desiredSize = target.Measure(context, Size.Infinity);
var arrangeSize = target.Arrange(context, desiredSize);
Assert.Equal(new Size(100, 120), desiredSize);
Assert.Equal(new Size(100, 120), arrangeSize);
Assert.Equal(new Rect(0, 0, 20, 120), context.Children[0].Bounds);
Assert.Equal(new Rect(20, 0, 30, 120), context.Children[1].Bounds);
Assert.Equal(new Rect(50, 0, 50, 120), context.Children[2].Bounds);
}
public void Arranges_Horizontal_Children_With_Correct_Bounds()
{
var target = new NonVirtualizingStackLayout
{
Orientation = Orientation.Horizontal
};
var context = CreateContext(new[]
{
new TestControl
{
VerticalAlignment = VerticalAlignment.Top,
MeasureSize = new Size(10, 50),
},
new TestControl
{
VerticalAlignment = VerticalAlignment.Top,
MeasureSize = new Size(10, 150),
},
new TestControl
{
VerticalAlignment = VerticalAlignment.Center,
MeasureSize = new Size(10, 50),
},
new TestControl
{
VerticalAlignment = VerticalAlignment.Center,
MeasureSize = new Size(10, 150),
},
new TestControl
{
VerticalAlignment = VerticalAlignment.Bottom,
MeasureSize = new Size(10, 50),
},
new TestControl
{
VerticalAlignment = VerticalAlignment.Bottom,
MeasureSize = new Size(10, 150),
},
new TestControl
{
VerticalAlignment = VerticalAlignment.Stretch,
MeasureSize = new Size(10, 50),
},
new TestControl
{
VerticalAlignment = VerticalAlignment.Stretch,
MeasureSize = new Size(10, 150),
},
});
var desiredSize = target.Measure(context, new Size(150, 100));
Assert.Equal(new Size(80, 100), desiredSize);
target.Arrange(context, desiredSize);
var bounds = context.Children.Select(x => x.Bounds).ToArray();
Assert.Equal(
new[]
{
new Rect(0, 0, 10, 50),
new Rect(10, 0, 10, 100),
new Rect(20, 25, 10, 50),
new Rect(30, 0, 10, 100),
new Rect(40, 50, 10, 50),
new Rect(50, 0, 10, 100),
new Rect(60, 0, 10, 100),
new Rect(70, 0, 10, 100),
}, bounds);
}