Max Katz
4 years ago
committed by
GitHub
GitHub
11 changed files with 330 additions and 145 deletions
@ -1,53 +0,0 @@ |
|||||
using System; |
|
||||
using System.Globalization; |
|
||||
using Avalonia.Data.Converters; |
|
||||
|
|
||||
namespace Avalonia.Controls.Primitives.Converters |
|
||||
{ |
|
||||
/// <summary>
|
|
||||
/// Gets the third <see cref="ColorComponent"/> corresponding with a given
|
|
||||
/// <see cref="ColorSpectrumComponents"/> that represents the other two components.
|
|
||||
/// </summary>
|
|
||||
/// <remarks>
|
|
||||
/// This is a highly-specialized converter for the color picker.
|
|
||||
/// </remarks>
|
|
||||
public class ThirdComponentConverter : IValueConverter |
|
||||
{ |
|
||||
/// <inheritdoc/>
|
|
||||
public object? Convert( |
|
||||
object? value, |
|
||||
Type targetType, |
|
||||
object? parameter, |
|
||||
CultureInfo culture) |
|
||||
{ |
|
||||
if (value is ColorSpectrumComponents components) |
|
||||
{ |
|
||||
// Note: Alpha is not relevant here
|
|
||||
switch (components) |
|
||||
{ |
|
||||
case ColorSpectrumComponents.HueSaturation: |
|
||||
case ColorSpectrumComponents.SaturationHue: |
|
||||
return (ColorComponent)HsvComponent.Value; |
|
||||
case ColorSpectrumComponents.HueValue: |
|
||||
case ColorSpectrumComponents.ValueHue: |
|
||||
return (ColorComponent)HsvComponent.Saturation; |
|
||||
case ColorSpectrumComponents.SaturationValue: |
|
||||
case ColorSpectrumComponents.ValueSaturation: |
|
||||
return (ColorComponent)HsvComponent.Hue; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
return AvaloniaProperty.UnsetValue; |
|
||||
} |
|
||||
|
|
||||
/// <inheritdoc/>
|
|
||||
public object? ConvertBack( |
|
||||
object? value, |
|
||||
Type targetType, |
|
||||
object? parameter, |
|
||||
CultureInfo culture) |
|
||||
{ |
|
||||
return AvaloniaProperty.UnsetValue; |
|
||||
} |
|
||||
} |
|
||||
} |
|
||||
@ -0,0 +1,71 @@ |
|||||
|
namespace Avalonia.Controls.Primitives |
||||
|
{ |
||||
|
/// <summary>
|
||||
|
/// A thin wrapper over an <see cref="System.Array"/> that allows some additional list-like functionality.
|
||||
|
/// </summary>
|
||||
|
/// <remarks>
|
||||
|
/// This is only for internal ColorPicker-related functionality and should not be used elsewhere.
|
||||
|
/// It is added for performance to enjoy the simplicity of the IList.Add() method without requiring
|
||||
|
/// an additional copy to turn a list into an array for bitmaps.
|
||||
|
/// </remarks>
|
||||
|
/// <typeparam name="T">The type of items in the array.</typeparam>
|
||||
|
internal class ArrayList<T> |
||||
|
{ |
||||
|
private int _nextIndex = 0; |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Initializes a new instance of the <see cref="ArrayList{T}"/> class.
|
||||
|
/// </summary>
|
||||
|
public ArrayList(int capacity) |
||||
|
{ |
||||
|
Capacity = capacity; |
||||
|
Array = new T[capacity]; |
||||
|
} |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Provides access to the underlying array by index.
|
||||
|
/// This exists for simplification and the <see cref="Array"/> property
|
||||
|
/// may also be used.
|
||||
|
/// </summary>
|
||||
|
/// <param name="i">The index of the item to get or set.</param>
|
||||
|
/// <returns>The item at the given index.</returns>
|
||||
|
public T this[int i] |
||||
|
{ |
||||
|
get => Array[i]; |
||||
|
set => Array[i] = value; |
||||
|
} |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Gets the underlying array.
|
||||
|
/// </summary>
|
||||
|
public T[] Array { get; private set; } |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Gets the fixed capacity/size of the array.
|
||||
|
/// This must be set during construction.
|
||||
|
/// </summary>
|
||||
|
public int Capacity { get; private set; } |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Adds the given item to the array at the next available index.
|
||||
|
/// WARNING: This must be used carefully and only once, in sequence.
|
||||
|
/// </summary>
|
||||
|
/// <param name="item">The item to add.</param>
|
||||
|
public void Add(T item) |
||||
|
{ |
||||
|
if (_nextIndex >= 0 && |
||||
|
_nextIndex < Capacity) |
||||
|
{ |
||||
|
Array[_nextIndex] = item; |
||||
|
_nextIndex++; |
||||
|
} |
||||
|
else |
||||
|
{ |
||||
|
// If necessary an exception could be thrown here
|
||||
|
// throw new IndexOutOfRangeException();
|
||||
|
} |
||||
|
|
||||
|
return; |
||||
|
} |
||||
|
} |
||||
|
} |
||||
Loading…
Reference in new issue