44 lines
1.5 KiB
C#
44 lines
1.5 KiB
C#
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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 System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Data;
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namespace MainShell.Converter
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{
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public class WidthToMarginConverter : IValueConverter
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{
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public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
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{
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double actualWidth = 0;
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if (value is double d) actualWidth = d;
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double expanded = 200;
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double extra = 0;
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if (parameter is string s)
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{
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var parts = s.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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if (parts.Length >= 1 && double.TryParse(parts[0], out var p0)) expanded = p0;
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if (parts.Length >= 2 && double.TryParse(parts[1], out var p1)) extra = p1;
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}
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// 计算右侧 Margin：
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// 当 actualWidth == expanded 时返回 0（不偏移）
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// 当 actualWidth 减小时会返回正值，从而把 ToggleButton 向左推（或根据需要调整公式）
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double right = Math.Max(0, expanded - actualWidth) + extra;
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// 根据布局需要你可以修改这里返回的 Thickness 的哪一项（Left/Right）
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return new Thickness(-30, 0, 0, 0);
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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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throw new NotImplementedException();
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}
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}
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}
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