499 строки
14 KiB
C#
499 строки
14 KiB
C#
using NUnit.Framework;
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using System;
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using System.Globalization;
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using System.Threading;
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namespace Xamarin.Forms.Core.UnitTests
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{
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[TestFixture]
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public class FlexLayoutTests : BaseTestFixture
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{
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[Test]
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public void TestBasicLayout()
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{
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var platform = new UnitPlatform();
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var label1 = new Label { Platform = platform, IsPlatformEnabled = true };
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var label2 = new Label { Platform = platform, IsPlatformEnabled = true };
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var layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Children = {
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label1,
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label2,
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}
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};
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layout.Layout(new Rectangle(0, 0, 912, 912));
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Assert.That(layout.Bounds, Is.EqualTo(new Rectangle(0, 0, 912, 912)));
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Assert.That(label1.Bounds, Is.EqualTo(new Rectangle(0, 0, 100, 912)));
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Assert.That(label2.Bounds, Is.EqualTo(new Rectangle(100, 0, 100, 912)));
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}
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[Test]
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public void TestBasicLayoutWithElementsWidth()
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{
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var platform = new UnitPlatform();
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var label1 = new Label { Platform = platform, IsPlatformEnabled = true, WidthRequest = 120 };
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var label2 = new Label { Platform = platform, IsPlatformEnabled = true, WidthRequest = 120 };
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var layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Children = {
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label1,
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label2,
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}
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};
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layout.Layout(new Rectangle(0, 0, 912, 912));
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Assert.That(layout.Bounds, Is.EqualTo(new Rectangle(0, 0, 912, 912)));
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Assert.That(label1.Bounds, Is.EqualTo(new Rectangle(0, 0, 120, 912)));
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Assert.That(label2.Bounds, Is.EqualTo(new Rectangle(120, 0, 120, 912)));
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}
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[Test]
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public void TestBasicLayoutWithElementsWidthAndMargin()
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{
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var platform = new UnitPlatform();
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var label1 = new Label { Platform = platform, IsPlatformEnabled = true, WidthRequest = 100, Margin = new Thickness(5, 0, 0, 0) };
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var label2 = new Label { Platform = platform, IsPlatformEnabled = true, WidthRequest = 100, Margin = new Thickness(5, 0, 0, 0) };
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var layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Children = {
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label1,
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label2,
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}
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};
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layout.Layout(new Rectangle(0, 0, 912, 912));
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Assert.AreEqual(912, layout.Width);
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Assert.AreEqual(912, layout.Height);
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Assert.AreEqual(new Rectangle(5, 0, 100, 912), label1.Bounds);
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Assert.AreEqual(new Rectangle(110, 0, 100, 912), label2.Bounds);
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}
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[Test]
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public void TestSetBounds()
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{
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var layoutSize = new Size(320, 50);
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var platform = new UnitPlatform();
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var layout = new FlexLayout {
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Direction = FlexDirection.Row,
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AlignItems = FlexAlignItems.Start,
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Platform = platform,
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IsPlatformEnabled = true
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};
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var label1 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label1, 1);
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layout.Children.Add(label1);
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var label2 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label2, 1);
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layout.Children.Add(label2);
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var label3 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label3, 1);
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layout.Children.Add(label3);
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layout.Layout(new Rectangle(0, 0, layoutSize.Width, layoutSize.Height));
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Assert.AreEqual(label2.Bounds.Left, Math.Max(label1.Bounds.Left, label1.Bounds.Right), 1);
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Assert.AreEqual(label3.Bounds.Left, Math.Max(label2.Bounds.Left, label2.Bounds.Right), 1);
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double totalWidth = 0;
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foreach (var view in layout.Children)
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{
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totalWidth += view.Bounds.Width;
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}
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Assert.AreEqual(layoutSize.Width, totalWidth, 2);
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}
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[Test]
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public void TestRelayoutOnChildrenRemoved()
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{
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var layoutSize = new Size(300, 50);
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var platform = new UnitPlatform();
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var layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Direction = FlexDirection.Row
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};
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var label1 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label1, 1);
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layout.Children.Add(label1);
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var label2 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label2, 1);
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layout.Children.Add(label2);
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var label3 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label3, 1);
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layout.Children.Add(label3);
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layout.Layout(new Rectangle(0, 0, layoutSize.Width, layoutSize.Height));
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foreach (var view in layout.Children)
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Assert.That(view.Bounds.Width, Is.EqualTo(100));
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layout.Children.Remove(label3);
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Assert.That(label1.Bounds.Width, Is.EqualTo(150));
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Assert.That(label2.Bounds.Width, Is.EqualTo(150));
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Assert.That(label3.Bounds.Width, Is.EqualTo(100));
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}
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[Test]
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public void TestFlexLayoutIsIncludeChangeWorksOnSecondPass()
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{
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var layoutSize = new Size(300, 50);
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var platform = new UnitPlatform();
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var layout = new FlexLayout {
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Direction = FlexDirection.Row,
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Platform = platform,
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IsPlatformEnabled = true,
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};
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var label1 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label1, 1);
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layout.Children.Add(label1);
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var label2 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label2, 1);
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layout.Children.Add(label2);
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var label3 = new Label { Platform = platform, IsPlatformEnabled = true };
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FlexLayout.SetGrow(label3, 1);
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layout.Layout(new Rectangle(0, 0, layoutSize.Width, layoutSize.Height));
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Assert.AreEqual(150, label1.Bounds.Width);
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Assert.AreEqual(150, label2.Bounds.Width);
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Assert.AreEqual(-1, label3.Bounds.Width);
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layout.Children.Add(label3);
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layout.Layout(new Rectangle(0, 0, layoutSize.Width, layoutSize.Height));
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Assert.AreEqual(100, label1.Bounds.Width);
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Assert.AreEqual(100, label2.Bounds.Width);
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Assert.AreEqual(100, label3.Bounds.Width);
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}
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[Test]
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// fixed at https://github.com/xamarin/flex/commit/0ccb9f1625abdc5400def29651373937bf6610cd
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public void TestSwapChildrenOrder()
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{
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var layoutSize = new Size(300, 50);
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var platform = new UnitPlatform();
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var layout = new FlexLayout {
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Direction = FlexDirection.Row,
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Platform = platform,
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IsPlatformEnabled = true,
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};
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var label0 = new Label { Platform = platform, IsPlatformEnabled = true, Text="Label0" };
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FlexLayout.SetGrow(label0, 1);
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layout.Children.Add(label0);
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var label1 = new Label { Platform = platform, IsPlatformEnabled = true, Text = "Label1" };
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FlexLayout.SetGrow(label1, 1);
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layout.Children.Add(label1);
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var label2 = new Label { Platform = platform, IsPlatformEnabled = true, Text = "Label2" };
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FlexLayout.SetGrow(label2, 1);
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layout.Children.Add(label2);
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layout.Layout(new Rectangle(0, 0, layoutSize.Width, layoutSize.Height));
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Assert.AreEqual(new Rectangle(0, 0, 100, 50), label0.Bounds);
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Assert.AreEqual(new Rectangle(100, 0, 100, 50), label1.Bounds);
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Assert.AreEqual(new Rectangle(200, 0, 100, 50), label2.Bounds);
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var lastItem = layout.Children[2];
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Assert.That(lastItem, Is.SameAs(label2));
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layout.Children.Remove(lastItem);
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Assert.AreEqual(new Rectangle(0, 0, 150, 50), label0.Bounds);
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Assert.AreEqual(new Rectangle(150, 0, 150, 50), label1.Bounds);
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layout.Children.Insert(0, lastItem);
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Assert.AreEqual(new Rectangle(0, 0, 100, 50), label2.Bounds);
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Assert.AreEqual(new Rectangle(100, 0, 100, 50), label0.Bounds);
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Assert.AreEqual(new Rectangle(200, 0, 100, 50), label1.Bounds);
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}
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[Test]
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public void TestSizeThatFits()
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{
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var platform = new UnitPlatform(useRealisticLabelMeasure: true);
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var layout = new FlexLayout {
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Direction = FlexDirection.Row,
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AlignItems = FlexAlignItems.Start,
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Platform = platform,
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IsPlatformEnabled = true
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};
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var label1 = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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LineBreakMode = LineBreakMode.TailTruncation,
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Text = @"This is a very very very very very very very very long piece of text."
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};
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FlexLayout.SetShrink(label1, 1);
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layout.Children.Add(label1);
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var label2 = new Label {
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Text = "",
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Platform = platform,
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IsPlatformEnabled = true,
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WidthRequest = 10,
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HeightRequest = 10
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};
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layout.Children.Add(label2);
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layout.Layout(new Rectangle(0, 0, 320, 50));
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var label2Size = label2.Measure(double.PositiveInfinity, double.PositiveInfinity);
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Assert.AreEqual(10, label2Size.Request.Height);
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Assert.AreEqual(10, label2Size.Request.Width);
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var label1Size = label1.Measure(double.PositiveInfinity, double.PositiveInfinity);
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// var layoutSize = layout.Measure(-1, -1);
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}
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[Test]
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public void TestNesting()
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{
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var platform = new UnitPlatform();
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var header = new View { HeightRequest = 50, IsPlatformEnabled = true, };
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var footer = new View { HeightRequest = 50, IsPlatformEnabled = true, };
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Func<View> createItem = () => {
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var v = new View { WidthRequest = 50, Margin = 5, IsPlatformEnabled = true, };
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FlexLayout.SetGrow(v, 1);
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return v;
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};
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var layout = new FlexLayout
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{
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Platform = platform,
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IsPlatformEnabled = true,
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Children = {
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header,
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new FlexLayout{
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Direction = FlexDirection.Row,
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IsPlatformEnabled = true,
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Children = {
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createItem(),
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createItem(),
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createItem(),
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createItem(),
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createItem(),
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}
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},
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footer,
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},
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Direction = FlexDirection.Column,
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};
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var inner = layout.Children[1] as FlexLayout;
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FlexLayout.SetGrow(inner, 1);
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layout.Layout(new Rectangle(0, 0, 300, 600));
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Assert.That(layout.Bounds, Is.EqualTo(new Rectangle(0, 0, 300, 600)));
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Assert.That(header.Bounds, Is.EqualTo(new Rectangle(0, 0, 300, 50)));
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Assert.That(inner.Bounds, Is.EqualTo(new Rectangle(0, 50, 300, 500)));
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Assert.That(inner.Children[0].Bounds, Is.EqualTo(new Rectangle(5, 5, 50, 490)));
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Assert.That(inner.Children[1].Bounds, Is.EqualTo(new Rectangle(65, 5, 50, 490)));
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Assert.That(inner.Children[2].Bounds, Is.EqualTo(new Rectangle(125, 5, 50, 490)));
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Assert.That(inner.Children[3].Bounds, Is.EqualTo(new Rectangle(185, 5, 50, 490)));
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Assert.That(inner.Children[4].Bounds, Is.EqualTo(new Rectangle(245, 5, 50, 490)));
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Assert.That(footer.Bounds, Is.EqualTo(new Rectangle(0, 550, 300, 50)));
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}
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[Test]
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public void TestMeasuring()
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{
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var platform = new UnitPlatform();
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var label = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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};
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var Layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Direction = FlexDirection.Row,
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Wrap = FlexWrap.Wrap,
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Children = {
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label,
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}
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};
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//measure sith +inf as main-axis
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var measure = Layout.Measure(double.PositiveInfinity, 40);
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Assert.That(measure.Request, Is.EqualTo(new Size(100, 40)));
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//measure sith +inf as cross-axis
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measure = Layout.Measure(200, double.PositiveInfinity);
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Assert.That(measure.Request, Is.EqualTo(new Size(200, 20)));
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//measure with +inf as both axis
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measure = Layout.Measure(double.PositiveInfinity, double.PositiveInfinity);
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Assert.That(measure.Request, Is.EqualTo(new Size(100, 20)));
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}
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[Test]
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public void TestMarginsWithWrap()
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{
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var platform = new UnitPlatform();
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var label0 = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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Margin=6,
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};
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var label1 = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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Margin=6,
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};
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var label2 = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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};
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FlexLayout.SetGrow(label0, 0);
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FlexLayout.SetBasis(label0, new FlexBasis(.5f, true));
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FlexLayout.SetGrow(label1, 0);
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FlexLayout.SetBasis(label1, new FlexBasis(.5f, true));
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FlexLayout.SetGrow(label2, 0);
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FlexLayout.SetBasis(label2, new FlexBasis(1f, true));
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var layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Direction = FlexDirection.Row,
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Wrap = FlexWrap.Wrap,
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AlignItems = FlexAlignItems.Start,
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AlignContent = FlexAlignContent.Start,
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Children = {
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label0,
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label1,
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label2,
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}
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};
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var measure = layout.Measure(300, double.PositiveInfinity);
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Assert.That(measure.Request, Is.EqualTo(new Size(300, 52)));
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layout.Layout(new Rectangle(0, 0, 300, 300));
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Assert.That(label0.Bounds, Is.EqualTo(new Rectangle(6, 6, 138, 20)));
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Assert.That(label1.Bounds, Is.EqualTo(new Rectangle(156, 6, 138, 20)));
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Assert.That(label2.Bounds, Is.EqualTo(new Rectangle(0, 32, 300, 20)));
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}
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[Test]
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//https://github.com/xamarin/Xamarin.Forms/issues/2551
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public void TestReverseWithGrow()
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{
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var platform = new UnitPlatform();
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var label0 = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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};
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FlexLayout.SetGrow(label0, 1);
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var layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Direction = FlexDirection.ColumnReverse,
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Children = {
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label0,
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}
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};
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layout.Layout(new Rectangle(0, 0, 300, 300));
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Assert.That(label0.Bounds, Is.EqualTo(new Rectangle(0, 0, 300, 300)));
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}
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[Test]
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public void TestIsVisible()
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//https://github.com/xamarin/Xamarin.Forms/issues/2593
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{
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var platform = new UnitPlatform();
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var label0 = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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};
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var label1 = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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};
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var label2 = new Label {
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Platform = platform,
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IsPlatformEnabled = true,
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};
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var layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Direction = FlexDirection.Column,
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Children = {
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label0,
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label1,
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label2,
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}
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};
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layout.Layout(new Rectangle(0, 0, 300, 300));
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Assert.That(label0.Bounds, Is.EqualTo(new Rectangle(0, 0, 300, 20)));
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Assert.That(label1.Bounds, Is.EqualTo(new Rectangle(0, 20, 300, 20)));
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Assert.That(label2.Bounds, Is.EqualTo(new Rectangle(0, 40, 300, 20)));
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label1.IsVisible = false;
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Assert.That(label0.Bounds, Is.EqualTo(new Rectangle(0, 0, 300, 20)));
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Assert.That(label2.Bounds, Is.EqualTo(new Rectangle(0, 20, 300, 20)));
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label0.IsVisible = false;
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label1.IsVisible = true;
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Assert.That(label1.Bounds, Is.EqualTo(new Rectangle(0, 0, 300, 20)));
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Assert.That(label2.Bounds, Is.EqualTo(new Rectangle(0, 20, 300, 20)));
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}
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[Test]
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public void ChangingGrowTriggersLayout()
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//https://github.com/xamarin/Xamarin.Forms/issues/2821
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{
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var platform = new UnitPlatform();
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var layout = new FlexLayout {
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Platform = platform,
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IsPlatformEnabled = true,
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Direction = FlexDirection.Column,
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};
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layout.Layout(new Rectangle(0, 0, 300, 300));
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for (var i = 0; i < 3; i++) {
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var box = new BoxView {
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Platform = platform,
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IsPlatformEnabled = true,
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};
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layout.Children.Add(box);
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FlexLayout.SetGrow(box, 1f);
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}
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Assert.That(layout.Children[2].Bounds, Is.EqualTo(new Rectangle(0, 200, 300, 100)));
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}
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}
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}
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