Steven Kirk
4 years ago
committed by
GitHub
GitHub
45 changed files with 902 additions and 197 deletions
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namespace Avalonia.Controls |
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{ |
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/// <summary>
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/// Internal interface for listening to changes in <see cref="Classes"/> in a more
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/// performant manner than subscribing to CollectionChanged.
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/// </summary>
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internal interface IClassesChangedListener |
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{ |
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/// <summary>
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/// Notifies the listener that the <see cref="Classes"/> collection has changed.
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/// </summary>
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void Changed(); |
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} |
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} |
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using System; |
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using System.Collections.Generic; |
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using System.Globalization; |
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using System.Linq; |
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using Avalonia.Data; |
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using Avalonia.Data.Converters; |
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namespace Avalonia.Controls.Converters; |
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/// <summary>
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/// Calls <see cref="string.Format(string, object[])"/> on the passed in values, where the first element in the list
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/// is the string, and everything after it is passed into the object array in order.
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/// </summary>
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public class StringFormatConverter : IMultiValueConverter |
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{ |
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public object? Convert(IList<object?> values, Type targetType, object? parameter, CultureInfo culture) |
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{ |
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try |
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{ |
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return string.Format((string)values[0]!, values.Skip(1).ToArray()); |
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} |
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catch (Exception e) |
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{ |
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return new BindingNotification(e, BindingErrorType.Error); |
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} |
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} |
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} |
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@ -0,0 +1,85 @@ |
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using System.Collections.Generic; |
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using System.Runtime.CompilerServices; |
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using Avalonia.Controls; |
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using Avalonia.Styling; |
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using BenchmarkDotNet.Attributes; |
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#nullable enable |
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namespace Avalonia.Benchmarks.Styling |
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{ |
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[MemoryDiagnoser] |
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public class Style_ClassSelector |
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{ |
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private Style _style = null!; |
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public Style_ClassSelector() |
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{ |
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RuntimeHelpers.RunClassConstructor(typeof(TestClass).TypeHandle); |
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} |
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[GlobalSetup] |
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public void Setup() |
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{ |
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_style = new Style(x => x.OfType<TestClass>().Class("foo")) |
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{ |
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Setters = { new Setter(TestClass.StringProperty, "foo") } |
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}; |
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} |
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[Benchmark(OperationsPerInvoke = 50)] |
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public void Apply() |
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{ |
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var target = new TestClass(); |
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target.BeginBatchUpdate(); |
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for (var i = 0; i < 50; ++i) |
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_style.TryAttach(target, null); |
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target.EndBatchUpdate(); |
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} |
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[Benchmark(OperationsPerInvoke = 50)] |
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public void Apply_Toggle() |
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{ |
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var target = new TestClass(); |
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target.BeginBatchUpdate(); |
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for (var i = 0; i < 50; ++i) |
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_style.TryAttach(target, null); |
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target.EndBatchUpdate(); |
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target.Classes.Add("foo"); |
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target.Classes.Remove("foo"); |
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} |
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[Benchmark(OperationsPerInvoke = 50)] |
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public void Apply_Detach() |
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{ |
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var target = new TestClass(); |
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target.BeginBatchUpdate(); |
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for (var i = 0; i < 50; ++i) |
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_style.TryAttach(target, null); |
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target.EndBatchUpdate(); |
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target.DetachStyles(); |
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} |
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private class TestClass : Control |
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{ |
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public static readonly StyledProperty<string?> StringProperty = |
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AvaloniaProperty.Register<TestClass, string?>("String"); |
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public void DetachStyles() => InvalidateStyles(); |
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} |
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private class TestClass2 : Control |
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{ |
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} |
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} |
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} |
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