using System.Globalization;
using System.Windows.Data;

namespace Melskin.Converters.Internal;

/// <summary>
/// 
/// </summary>
[ValueConversion(typeof(double), typeof(Thickness))]
internal class IntensityToSlotMarginConverter : IValueConverter
{
    public static readonly IntensityToSlotMarginConverter Instance = new();
        
    public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
    {
        var intensity = (double)(value ?? 0);
        //边距越小，留下的边框越窄
        var uniformValue = 4 * intensity + 4;
        return new Thickness(uniformValue);
    }

    public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
    {
        return Binding.DoNothing;
    }
}