How to Stretch WPF Tab Item Headers to Parent Control Width

Question

Is there a way in XAML to cause the tab item headers to stretch across the width of the tab control?

For example, I have three tabs: red, blue and green. If I have a

Answer 1

I was able to do this using a Converter like so:

namespace WpfApplication1.Converters
{
    public class SizeConverter : IValueConverter
    {
        #region IValueConverter Members

        public object Convert(object value, Type targetType, object parameter,
            System.Globalization.CultureInfo culture)
        {
            double width = Double.Parse(value.ToString());
            //Subtract 1, otherwise we could overflow to two rows.
            return .25 * width - 1;
        }

        public object ConvertBack(object value, Type targetType, object parameter,
            System.Globalization.CultureInfo culture)
        {
            throw new NotSupportedException();
        }

        #endregion
    }
}

Then adding the namespace to my xaml:

xmlns:local="clr-namespace:WpfApplication1.Converters"

Then making all of the TabItems use the converter:

x_Grid is the x:Name of the parent element I want the tabs to be 1/4 of, if that makes sense.