public void TestMeasuring()
{
var label = new Label {
IsPlatformEnabled = true,
};
var Layout = new FlexLayout {
IsPlatformEnabled = true,
Direction = FlexDirection.Row,
Wrap = FlexWrap.Wrap,
Children =
{
label,
}
};
//measure sith +inf as main-axis
var measure = Layout.Measure(double.PositiveInfinity, 40);
Assert.That(measure.Request, Is.EqualTo(new Size(100, 40)));
//measure sith +inf as cross-axis
measure = Layout.Measure(200, double.PositiveInfinity);
Assert.That(measure.Request, Is.EqualTo(new Size(200, 20)));
//measure with +inf as both axis
measure = Layout.Measure(double.PositiveInfinity, double.PositiveInfinity);
Assert.That(measure.Request, Is.EqualTo(new Size(100, 20)));
}
public void TestFlexDirectionRowNoWidth()
{
var platform = new UnitPlatform();
var view0 = new View {
Platform = platform, IsPlatformEnabled = true, WidthRequest = 10,
};
var view1 = new View {
Platform = platform, IsPlatformEnabled = true, WidthRequest = 10,
};
var view2 = new View {
Platform = platform, IsPlatformEnabled = true, WidthRequest = 10,
};
var layout = new FlexLayout {
Platform = platform,
IsPlatformEnabled = true,
Children =
{
view0,
view1,
view2,
},
Direction = FlexDirection.Row,
};
var measure = layout.Measure(double.PositiveInfinity, 100);
layout.Layout(new Rectangle(0, 0, measure.Request.Width, measure.Request.Height));
Assert.That(layout.Bounds, Is.EqualTo(new Rectangle(0, 0, 30, 100)));
Assert.That(view0.Bounds, Is.EqualTo(new Rectangle(0, 0, 10, 100)));
Assert.That(view1.Bounds, Is.EqualTo(new Rectangle(10, 0, 10, 100)));
Assert.That(view2.Bounds, Is.EqualTo(new Rectangle(20, 0, 10, 100)));
}
public void TestFlexDirectionColumnWithoutHeight()
{
var platform = new UnitPlatform();
var view0 = new View {
Platform = platform, IsPlatformEnabled = true, HeightRequest = 10
};
var view1 = new View {
Platform = platform, IsPlatformEnabled = true, HeightRequest = 10
};
var view2 = new View {
Platform = platform, IsPlatformEnabled = true, HeightRequest = 10
};
var layout = new FlexLayout {
Platform = platform,
IsPlatformEnabled = true,
Children =
{
view0,
view1,
view2,
},
Direction = FlexDirection.Column,
};
var sizeRequest = layout.Measure(100, double.PositiveInfinity);
layout.Layout(new Rectangle(0, 0, sizeRequest.Request.Width, sizeRequest.Request.Height));
Assert.That(layout.Bounds, Is.EqualTo(new Rectangle(0, 0, 100, 30)));
Assert.That(view0.Bounds, Is.EqualTo(new Rectangle(0, 0, 100, 10)));
Assert.That(view1.Bounds, Is.EqualTo(new Rectangle(0, 10, 100, 10)));
Assert.That(view2.Bounds, Is.EqualTo(new Rectangle(0, 20, 100, 10)));
}
public void TestAlignContentFlexEnd()
{
MockPlatformSizeService.Current.GetPlatformSizeFunc = (visual, width, height) => new SizeRequest(new Size(50, 10));
var layout = new FlexLayout
{
IsPlatformEnabled = true,
WidthRequest = 100,
HeightRequest = 100,
Direction = FlexDirection.Column,
AlignContent = FlexAlignContent.End,
AlignItems = FlexAlignItems.Start,
Wrap = FlexWrap.Wrap,
};
Func <View> createView = () => new View
{
IsPlatformEnabled = true,
WidthRequest = 50,
HeightRequest = 10,
};
var view0 = createView();
layout.Children.Add(view0);
var view1 = createView();
layout.Children.Add(view1);
var view2 = createView();
layout.Children.Add(view2);
var view3 = createView();
layout.Children.Add(view3);
var view4 = createView();
layout.Children.Add(view4);
var measure = layout.Measure(100, 100);
layout.Layout(new Rect(0, 0, 100, 100));
Assert.That(layout.Bounds, Is.EqualTo(new Rect(0, 0, 100, 100)));
Assert.That(view0.Bounds, Is.EqualTo(new Rect(50, 0, 50, 10)));
Assert.That(view1.Bounds, Is.EqualTo(new Rect(50, 10, 50, 10)));
Assert.That(view2.Bounds, Is.EqualTo(new Rect(50, 20, 50, 10)));
Assert.That(view3.Bounds, Is.EqualTo(new Rect(50, 30, 50, 10)));
Assert.That(view4.Bounds, Is.EqualTo(new Rect(50, 40, 50, 10)));
}
public void TestMarginsWithWrap()
{
var platform = new UnitPlatform();
var label0 = new Label {
Platform = platform,
IsPlatformEnabled = true,
Margin = 6,
};
var label1 = new Label {
Platform = platform,
IsPlatformEnabled = true,
Margin = 6,
};
var label2 = new Label {
Platform = platform,
IsPlatformEnabled = true,
};
FlexLayout.SetGrow(label0, 0);
FlexLayout.SetBasis(label0, new FlexBasis(.5f, true));
FlexLayout.SetGrow(label1, 0);
FlexLayout.SetBasis(label1, new FlexBasis(.5f, true));
FlexLayout.SetGrow(label2, 0);
FlexLayout.SetBasis(label2, new FlexBasis(1f, true));
var layout = new FlexLayout {
Platform = platform,
IsPlatformEnabled = true,
Direction = FlexDirection.Row,
Wrap = FlexWrap.Wrap,
AlignItems = FlexAlignItems.Start,
AlignContent = FlexAlignContent.Start,
Children =
{
label0,
label1,
label2,
}
};
var measure = layout.Measure(300, double.PositiveInfinity);
Assert.That(measure.Request, Is.EqualTo(new Size(300, 52)));
layout.Layout(new Rectangle(0, 0, 300, 300));
Assert.That(label0.Bounds, Is.EqualTo(new Rectangle(6, 6, 138, 20)));
Assert.That(label1.Bounds, Is.EqualTo(new Rectangle(156, 6, 138, 20)));
Assert.That(label2.Bounds, Is.EqualTo(new Rectangle(0, 32, 300, 20)));
}