28 lines
1.3 KiB
C#
28 lines
1.3 KiB
C#
using System.Globalization;
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using System.Windows.Data;
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namespace NeumUI.Converters.Internal;
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/// <summary>
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/// IntensityToSlotShadowMarginConverter 类用于将阴影强度（double类型）转换为阴影边距（Thickness类型）。此转换器特别适用于需要根据阴影强度动态调整UI元素阴影边距的场景。
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/// 该类实现了IValueConverter接口，提供了从双精度浮点数到厚度值的单向转换逻辑。转换过程中，基于输入的强度值计算出一个偏移量，并以此构建新的 Thickness 实例来表示阴影边距。
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/// 注意：此转换器不支持反向转换操作。
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/// </summary>
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[ValueConversion(typeof(double), typeof(Thickness))]
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internal class IntensityToSlotShadowMarginConverter : IValueConverter
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{
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public static readonly IntensityToSlotShadowMarginConverter Instance = new();
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public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
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{
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var intensity = (double)(value ?? 0);
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//此处与中央Margin匹配
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var offset = 4 + intensity * 4;
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return new Thickness(0, 0, offset, offset);
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}
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public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
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{
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return Binding.DoNothing;
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}
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} |