Jeremy Koritzinsky
8 years ago
136 changed files with 2976 additions and 1076 deletions
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using System; |
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using System.Globalization; |
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namespace Avalonia.Data.Converters |
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{ |
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/// <summary>
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/// A value converter which calls <see cref="string.Format(string, object)"/>
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/// </summary>
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public class StringFormatValueConverter : IValueConverter |
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{ |
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/// <summary>
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/// Initializes a new instance of the <see cref="StringFormatValueConverter"/> class.
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/// </summary>
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/// <param name="format">The format string.</param>
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/// <param name="inner">
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/// An optional inner converter to be called before the format takes place.
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/// </param>
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public StringFormatValueConverter(string format, IValueConverter inner) |
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{ |
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Contract.Requires<ArgumentNullException>(format != null); |
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Format = format; |
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Inner = inner; |
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} |
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/// <summary>
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/// Gets an inner value converter which will be called before the string format takes place.
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/// </summary>
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public IValueConverter Inner { get; } |
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/// <summary>
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/// Gets the format string.
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/// </summary>
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public string Format { get; } |
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/// <inheritdoc/>
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public object Convert(object value, Type targetType, object parameter, CultureInfo culture) |
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{ |
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value = Inner?.Convert(value, targetType, parameter, culture) ?? value; |
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return string.Format(culture, Format, value); |
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} |
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/// <inheritdoc/>
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public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) |
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{ |
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throw new NotSupportedException("Two way bindings are not supported with a string format"); |
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} |
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} |
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} |
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@ -0,0 +1,58 @@ |
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using System; |
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using System.Collections.Generic; |
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using System.Text; |
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namespace Avalonia.Utilities |
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{ |
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/// <summary>
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/// FIFO Queue optimized for holding zero or one items.
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/// </summary>
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/// <typeparam name="T">The type of items held in the queue.</typeparam>
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public class SingleOrQueue<T> |
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{ |
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private T _head; |
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private Queue<T> _tail; |
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private Queue<T> Tail => _tail ?? (_tail = new Queue<T>()); |
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private bool HasTail => _tail != null; |
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public bool Empty { get; private set; } = true; |
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public void Enqueue(T value) |
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{ |
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if (Empty) |
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{ |
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_head = value; |
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} |
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else |
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{ |
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Tail.Enqueue(value); |
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} |
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Empty = false; |
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} |
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public T Dequeue() |
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{ |
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if (Empty) |
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{ |
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throw new InvalidOperationException("Cannot dequeue from an empty queue!"); |
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} |
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var result = _head; |
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if (HasTail && Tail.Count != 0) |
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{ |
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_head = Tail.Dequeue(); |
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} |
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else |
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{ |
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_head = default; |
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Empty = true; |
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} |
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return result; |
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} |
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} |
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} |
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@ -0,0 +1,31 @@ |
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// Copyright (c) The Avalonia Project. All rights reserved.
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// Licensed under the MIT license. See licence.md file in the project root for full license information.
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namespace Avalonia.Visuals.Media.Imaging |
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{ |
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/// <summary>
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/// Controls the performance and quality of bitmap scaling.
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/// </summary>
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public enum BitmapInterpolationMode |
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{ |
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/// <summary>
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/// Uses the default behavior of the underling render backend.
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/// </summary>
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Default, |
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/// <summary>
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/// The best performance but worst image quality.
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/// </summary>
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LowQuality, |
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/// <summary>
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/// Good performance and decent image quality.
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/// </summary>
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MediumQuality, |
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/// <summary>
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/// Highest quality but worst performance.
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/// </summary>
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HighQuality |
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} |
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} |
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@ -0,0 +1,39 @@ |
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// Copyright (c) The Avalonia Project. All rights reserved.
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// Licensed under the MIT license. See licence.md file in the project root for full license information.
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using Avalonia.Visuals.Media.Imaging; |
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namespace Avalonia.Media |
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{ |
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public class RenderOptions |
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{ |
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/// <summary>
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/// Defines the <see cref="BitmapInterpolationMode"/> property.
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/// </summary>
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public static readonly StyledProperty<BitmapInterpolationMode> BitmapInterpolationModeProperty = |
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AvaloniaProperty.RegisterAttached<RenderOptions, AvaloniaObject, BitmapInterpolationMode>( |
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"BitmapInterpolationMode", |
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BitmapInterpolationMode.MediumQuality, |
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inherits: true); |
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/// <summary>
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/// Gets the value of the BitmapInterpolationMode attached property for a control.
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/// </summary>
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/// <param name="element">The control.</param>
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/// <returns>The control's left coordinate.</returns>
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public static BitmapInterpolationMode GetBitmapInterpolationMode(AvaloniaObject element) |
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{ |
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return element.GetValue(BitmapInterpolationModeProperty); |
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} |
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/// <summary>
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/// Sets the value of the BitmapInterpolationMode attached property for a control.
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/// </summary>
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/// <param name="element">The control.</param>
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/// <param name="value">The left value.</param>
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public static void SetBitmapInterpolationMode(AvaloniaObject element, BitmapInterpolationMode value) |
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{ |
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element.SetValue(BitmapInterpolationModeProperty, value); |
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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; |
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using Avalonia.Data.Core; |
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using Avalonia.Markup.Parsers; |
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using Avalonia.Utilities; |
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namespace Avalonia.Markup.Xaml.Parsers |
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{ |
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internal class PropertyParser |
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{ |
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public (string ns, string owner, string name) Parse(CharacterReader r) |
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{ |
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if (r.End) |
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{ |
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throw new ExpressionParseException(0, "Expected property name."); |
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} |
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var openParens = r.TakeIf('('); |
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bool closeParens = false; |
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string ns = null; |
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string owner = null; |
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string name = null; |
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do |
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{ |
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var token = r.ParseIdentifier(); |
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if (token == null) |
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{ |
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if (r.End) |
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{ |
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break; |
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} |
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else |
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{ |
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if (openParens && !r.End && (closeParens = r.TakeIf(')'))) |
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{ |
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break; |
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} |
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else if (openParens) |
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{ |
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throw new ExpressionParseException(r.Position, $"Expected ')'."); |
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} |
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throw new ExpressionParseException(r.Position, $"Unexpected '{r.Peek}'."); |
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} |
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} |
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else if (!r.End && r.TakeIf(':')) |
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{ |
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ns = ns == null ? |
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token.ToString() : |
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throw new ExpressionParseException(r.Position, "Unexpected ':'."); |
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} |
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else if (!r.End && r.TakeIf('.')) |
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{ |
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owner = owner == null ? |
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token.ToString() : |
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throw new ExpressionParseException(r.Position, "Unexpected '.'."); |
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} |
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else |
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{ |
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name = token.ToString(); |
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} |
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} while (!r.End); |
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if (name == null) |
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{ |
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throw new ExpressionParseException(0, "Expected property name."); |
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} |
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else if (openParens && owner == null) |
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{ |
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throw new ExpressionParseException(1, "Expected property owner."); |
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} |
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else if (openParens && !closeParens) |
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{ |
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throw new ExpressionParseException(r.Position, "Expected ')'."); |
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} |
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else if (!r.End) |
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{ |
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throw new ExpressionParseException(r.Position, "Expected end of expression."); |
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} |
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return (ns, owner, name); |
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} |
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} |
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} |
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