src/Carnac/Utilities/PlacementMarginConverter.cs

（完整代码） 1KB 

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;
using Carnac.Logic.Native;

namespace Carnac.Utilities
{
    public class PlacementMarginConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter,
            CultureInfo culture)
        {
            if ((bool)values[2] == false || values[0] == DependencyProperty.UnsetValue || values[1] == DependencyProperty.UnsetValue)
                return new Thickness(0);

            var or = (Thickness)values[0];
            var sc = (DetailedScreen)values[1];

            var th = new Thickness
            {
                Top = or.Top*(sc.RelativeHeight/sc.Height),
                Bottom = or.Bottom*(sc.RelativeHeight/sc.Height),
                Left = or.Left*(sc.RelativeWidth/sc.Width),
                Right = or.Right*(sc.RelativeWidth/sc.Width)
            };

            return th;

        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter,
            CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}

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